Features
• 500 nA input quiescent current at VIN = 3.6 V (not switching)
•94% typical efficiency at 1 mA load (VIN = 3.6 V, VOUT = 3.3 V)
• 100% duty cycle
• 1.8 V to 5.5 V input operating range
• Undervoltage lockout: 1.57 V (VIN falling, typ.)
• Up to 400 mA output current capability
• Low power control operation for the best efficiency
• Embedded soft-start circuit
• Tiny external components: L = 2.2 µH typ.
• Settable inductor current limitation
• Selectable output voltages: 1.0 V to 3.3 V
• Output voltage Power Good
• ±1.5% output voltage accuracy (VOUT, TA = 25 °C)
• Dynamic output voltage selection (D0, D1 and D2)
• Auxiliary load switch Vout2 (AUX control input)
• Available in TQFN12 package
Applications
• Wearable applications
• Personal tracking monitors
• Smart watches, sport bands
• Energy harvesting, wireless sensors
• Wearable and fitness accessories
• Industrial sensors, portable low power devices
• Single cell Li-Ion battery applications
• Bluetooth® low energy
• Zigbee
Description
The ST1PS02 is a nano-quiescent miniaturized synchronous step-down converter,
which is able to provide up to 400 mA output current with an input voltage ranging
from 1.8 V to 5.5 V. This converter is specifically designed for applications where high
efficiency, PCB size and thickness are the key factors. The output voltage can be set
using two digital control inputs, a VOUT from 1.8 V to 3.3 V can be dynamically
selected. Thanks to the enhanced PCC (peak current control) the ST1PS02 reaches
very high efficiency conversion using just a 2.2 µH inductor and two small capacitors.
The device embeds a controlled load switch to supply a subsystem with same
voltage rail. Advanced design circuitry is implemented to minimize the quiescent
current. The device is available in thin plastic package.
Product status link
ST1PS02
400 mA nano-quiescent synchronous step-down converter with digital voltage
selection, Power Good and AUX switch
ST1PS02
Datasheet
DS13206 - Rev 1 - February 2020
For further information contact your local STMicroelectronics sales office.
www.st.com
1Application schematic
Figure 1. ST1PS02 application schematic
Table 1. Typical external components
Component Description Value Size - imperial (metric)
C1Ceramic capacitor with low ESR values
10 µF 0603 (1608)
C2, C3Ceramic capacitor with low ESR values
L1 Inductor 2.2 µH 0806 (2016)
R1Pull-up resistor
1 MΩ 0402 (1005)
R2Current limit resistor
ST1PS02
Application schematic
DS13206 - Rev 1 page 2/23
2Pin configuration
Figure 2. TQFN12 package (top through view)
Table 2. Pin description
Name Bump name Description
AUX 1 Enable for the auxiliary output voltage
VIN 2 Input supply voltage. Bypass this pin to ground with a 10 μF capacitor
SW 3 Switching output. Inductor connection
GND 4 Ground
VOUT 5 Sense pin used to monitor output voltage
Vout2 6 Auxiliary output pin with OCP (100 mA max. load)
PGOOD 7 Open drain output. It is in high impedance when the output regulation reaches 97%
CL 8
Current limit set. Connect to GND sets the default value (700 mA). An external resistor connected to
GND can be used to adjust this parameter with a lower value (resistor values are reported on
Table 6. Electrical characteristics
D0 9
Output voltage selection inputs ( refer to the order code table)D1 10
D2 11
EN 12 Enable pin. High logic level on the IC. VIN threshold referred
ST1PS02
Pin configuration
DS13206 - Rev 1 page 3/23
3Functional pin description
GND
Device ground pin.
VIN
Supply voltage. This pin supplies power to the internal analog and digital circuitries when voltage is higher than
VUVLO. Bypass this pin to GND with a 10 μF ceramic capacitor. Input capacitor C1 must be chosen with low ESR
to reduce the input voltage ripple.
SW
Inductor connection to internal PMOS and NMOS switches.
VOUT
Output voltage sense input. It provides the feedback voltage level to the regulation circuitry. 10 µF output
capacitor C2 must be connected close to the pin or through a short trace and should have low ESR to reduce the
output voltage ripple.
EN
Enable pin. A logic low level on this pin disables the device. High level enables the device. Do not leave this pin
floating.
D0, D1, D2
Output voltage selection pins. See the Table 2 for VOUT selection. Do not leave these pins floating. These pins
can be dynamically changed during operation.
PGOOD
Power Good open drain output. If used it requires a pull-up resistor to hold a high level signal. High impedance
indicates that VOUT is above proper good threshold.
AUX
Load switch selection pins. Vout2 output is activated when this pin is at high level. Held to ground if auxiliary
output (Vout2) is not used or if it should be disabled.
Vout2
Auxiliary output. It provides the same regulated voltage level as main output (VOUT) less drop on the load switch
circuitry. 10 µF output capacitor COUT2 must be connected close to the pin or through a short trace and should
have low ESR to reduce the output voltage ripple. This output is controlled from a soft-start circuit, if unused can
be left open.
CL
Current limit threshold input. Held to ground if not used and default current limitation is the proper value. For
smaller current values a pull-down resistor must be used.
ST1PS02
Functional pin description
DS13206 - Rev 1 page 4/23
4Maximum ratings
Table 3. Absolute maximum ratings
Symbol Parameter Value Unit
VIN Power and signal supply voltage - 0.3 to + 6.5 V
EN, D0, D1, D2, AUX Logic input pins - 0.3 to + 6.5 V
CL Current limitation input pin - 0.3 to + 6.5 V
VOUT, SW Output signal monitoring and switching pins -0.3 to VIN + 0.3 V
Vout2 Load switch output pin - 0.3 to + 6.5
PGOOD Power Good open drain output pin - 0.3 to + 6.5 V
TAMB Operating ambient temperature -40 to 85 °C
TJJunction temperature -40 to 125 °C
TSTG Storage temperature -55 to 150 °C
Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional
operation under these conditions is not implied
Table 4. Thermal data
Symbol Parameter TQFN12 Unit
RthJA Thermal resistance junction-ambient 75 °C/W
Table 5. Recommended operating conditions
Symbol Parameter Min. Typ. Max. Unit
VIN Input supply voltage 1.8 5.5 V
ST1PS02
Maximum ratings
DS13206 - Rev 1 page 5/23
5Electrical characteristics
C1= 10 µF, C2= 10 µF, C3= 10 µF, L1=2.2 µH, VIN=3.6 V, VEN= VIN, VOUT=1.8 V, TA=25 °C unless otherwise
specified.
Table 6. Electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
General section
IQ Quiescent current
EN=VIN, AUX=GND, IOUT=0 µA,
VOUT=1.8 V, device does not switch,
VIN=2.5 V to 5.5 V
500 1000 nA
EN=VIN, AUX=VIN, IOUT=ouA, VOUT=1.8 V,
device not switching 2 4 µA
ISD Shutdown current EN=GND, shutdown current into VIN 10 200 nA
VUVLO Undervoltage lockout threshold
VIN rising 1.63 1.72 V
VIN falling 1.51 1.57 V
Hysteresis 65 mV
Vth100%+ 100% mode leave threshold VIN rising, 100% mode is disabled with VIN = VOUTnom
+ Vth100%+
300
mV
Vth100%- 100% mode enter threshold VIN falling, 100% mode is entered with VIN = VOUTnom
+ Vth100%-
200
Output voltage
VOUT
Output voltage range Output voltages are selected with pins D0, D1, D2 1.0 3.3 V
Output voltage accuracy VIN = 3.6 V, whole VOUT range, IOUT=100 mA -1.5 1.5 %
tONmin Minimum on-time VIN = 3.6 V, VOUT= 2 V, IOUT= 0 mA 225 ns
tOFFmin Minimum off-time VIN=2.3V 50 ns
tstartupd Start-up delay time VEN from low to high, VIN = 3.6 V, VOUT = 1.8 V 1 5 ms
ROUTDIS Output discharge MOSFET on-
resistance VEN= GND 30 Ω
Logic inputs (EN, D0, D1)
VIL Low level input voltage threshold
VIN=1.8 V to 5.5 V
0.3
V
VIH High level input voltage threshold 1
Power switch
RDS(on)
High-side MOSFET on-
resistance VIN = 3.6 V, Isw = 400 mA 0.38 0.45
Ω
Low-side MOSFET on-resistance 0.14 0.2
ILIM1 High-side MOSFET switch
current limit 1.8 V ≤ VIN ≤ 5.5 V, CL=GND 750 1000
mA
ILIM2 High-side MOSFET switch
current limit 1.8 V ≤ VIN ≤ 5.5 V, CL=1 MΩ 500 800
ILIM3 High-side MOSFET switch
current limit 1.8 V ≤ VIN ≤ 5.5 V, CL=2.2 MΩ250 mA
ST1PS02
Electrical characteristics
DS13206 - Rev 1 page 6/23
Symbol Parameter Test conditions Min. Typ. Max. Unit
ILIMSS High-side MOSFET switch
current limit during soft-start
Reduced switch current limit during soft-start period
(typ. 400 µs) 200 280 360 mA
Power Good output (PGOOD)
Vthpg-
Power Good threshold voltage
Rising output voltage on VOUT pin, referred to VOUT
selected (D0, D1, D2) 95 97.5
%
VthpgH Hysteresis -4 -3.5 -2.5
VOL Low level output voltage 1.8 V ≤ VIN ≤ 5.5 V, EN = GND, current into PGOOD
pin, IPGOOD = 4 mA 0.23 V
Auxiliary output (Vout2)
RAUX High-side MOSFET on-
resistance ILoad=100 mA, Aux=VIN 0.6 0.8
Ω
Rdisc2 Low-side MOSFET on-resistance
(discharger) ILoad=100 mA, Aux=GND 30 50
tr_aux Vaux rise time
Starting with AUX low-to-high transition, time to ramp
VLOAD from 0 V to 95% VOUT = 1.8 V,
2.2 V ≤ VIN ≤ 5.5 V, ILOAD = 1 mA
315 600 µs
ST1PS02
Electrical characteristics
DS13206 - Rev 1 page 7/23
Table 7. Output voltage settings
Device D2 D1 D0 VOUT
ST1PS02AJR
0 0 0 1.40 V
0 0 1 1.45 V
0 1 0 1.50 V
0 1 1 1.55 V
1 0 0 1.60 V
1 0 1 1.65 V
1 1 0 1.70 V
1 1 1 1.75 V
ST1PS02BJR
0 0 0 1.8 V
0 0 1 1.9 V
0 1 0 2.0 V
0 1 1 2.1 V
1 0 0 2.2 V
1 0 1 2.3 V
1 1 0 2.4 V
1 1 1 2.5 V
ST1PS02CJR
0 0 0 2.6 V
0 0 1 2.7 V
0 1 0 2.8 V
0 1 1 2.9 V
1 0 0 3.0 V
1 0 1 3.1 V
1 1 0 3.2 V
1 1 1 3.3 V
ST1PS02DJR
0 0 0 1.10 V
0 0 1 1.15 V
0 1 0 1.20 V
0 1 1 1.25 V
1 0 0 1.30 V
1 0 1 1.35 V
1 1 0 1.00 V
1 1 1 1.05 V
ST1PS02
Electrical characteristics
DS13206 - Rev 1 page 8/23
6ST1PS02 block diagram
Figure 3. Block diagram
d
EN
VIN
D0
D1
PGOOD
SW
VOUT
GND
Bandgap/Bias
CTRL
Logic
VIN
L
Zero
Crossing
Comp.
C1 Rpu
Vout
Selection
Logic
VIN
Vuvlo
UVLO Comp.
Driver/
Anti-cross
conduction
circuitry
-
+
+
+
Peak and Valley
CURRENT LIMIT
-
+
-
+
+
--
+
Output
Discharge
D2
CL
Vout2
C3
VOUT2
Discharge
Current slew
Rate CTRL
Aux
C2
Compensation
Soft-start
ramp
Min. ON time
Min. OFF time
Pulse freq.
detection
VOUT
VSW
VFB
Vref VFB
Vref
PWM
VOUT
VSW
High current
mode VSW
Vth 100%
VIN
VIN
VOUT
Vref
TON
100%
Mode
comp.
ST1PS02
ST1PS02 block diagram
DS13206 - Rev 1 page 9/23
7Operation description
The ST1PS02 is an ultra-low quiescent new generation buck converter. It targets a very small quiescent current
consumption (typical 500 nA) and it guarantees high efficiency operation even down to few microampere loads.
It is based on a hysteretic comparator that senses the coil ripple current that is always held constant in all
operation modes. The device has seamless transition between PFM (pulse frequency modulation) and PWM
(pulse width modulation) mode with low ripple and good load transient response.
In order to maintain constant ripple current on the selected coil, the device changes switching frequency, which
also depends on input supply voltage. During PWM mode (heavy load), the device operates in continuous
conduction up to 400 mA and switching frequency can reach 2 MHz maximum.
7.1 Power save mode
At light load the device enters automatically power save mode with total current consumption from the input power
supply of 500 nA typical; during this condition most of the internal blocks are turned off in order to reach ultra-low
power consumption. During this time, the load current is supported by the output capacitor.
7.2 Output voltage
The device allows the output voltage selection without an external resistor divider. A couple of standard digital
inputs are used to configure the device to supply a fixed output voltage according to Table 2. Pin description. The
VOUT pin must be connected directly and as close as possible to the inductor terminal to obtain the best
performance and get the best output voltage regulation. The output voltage can be dynamically changed to
implement voltage scaling.
7.3 Output discharge and UVLO
The device embeds a fast output discharge circuitry active when the enable pin is held to ground (EN=gnd) or
when the input supply voltage reaches the minimum voltage level set by the UVLO protection circuit
(undervoltage lock-out protection circuit). The UVLO rising threshold at 1.63 V (typ.) guarantees a proper device
supply voltage operation. The output discharge function is available for the ST1PS02xQTR versions.
7.4 Soft-start and current limitation
The device embeds a fixed soft-start circuit active during a limited time period (few ms). This feature allows the
inrush current to be minimized from the power supply in case of weak source. During this period internal circuit
reduces to 280 mA the typical switch current limit.
7.5 100% duty cycle operation
The device enters 100% duty cycle operation if the input voltage comes close to the selected output voltage.
During this mode, the regulator is turned off and output pin is directly connected to the input pin through the high-
side MOSFET. The output voltage follows the input level minus the voltage drop across the internal MOSFET and
the inductor. Once the input voltage exceeds the 100% duty cyle leave threshold, the device restarts to switch and
regulates the select output voltage again.
7.6 Auxiliary output (Vout2)
The Aux pin controls Vout2 output. It provides the same regulated voltage level as the main output (VOUT) less
drop on the load switch circuitry, when Aux pin tied high. The Vout2 pin allows connecting/disconnecting the other
system load to the output of the ST1PS02.
7.7 Power Good flag
The Power Good comparator monitors the selected VOUT voltage. The Power Good open drain output is in high
impedance when the VOUT reaches the correct voltage level while it switches to low level when VOUT falls below
the normal voltage level.
ST1PS02
Operation description
DS13206 - Rev 1 page 10/23
8Typical performance characteristics
Figure 4. Efficiency vs load, VOUT = 1.8 V
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0.001 0.01 0.1 1 10 100 1000
Effici ency [%]
Load current [mA]
Vin 2.8V
Vin 3.2V
Vin 3.6V
Vin 4.2V
Vin 5V
L= 2.2 µH
Cout = 10 µF
Figure 5. Efficiency vs VIN, VOUT = 1.8 V
50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
2.8 3.3 3.8 4.3 4.8
Effici ency [%]
Input voltage [V]
Iout 100µA
Iout 1mA
Iout 50mA
Iout 100mA
Iout 200mA
L = 2.2 µH
Cout = 10 µF
Figure 6. Efficiency vs load, VOUT = 2.5 V
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0.001 0.01 0.1 1 10 100 1000
Effici ency [%]
Load current [mA]
Vin 3.2V
Vin 3.6V
Vin 4.2V
Vin 5V
L=2.2 µH
Cout=10 µF
Figure 7. Efficiency vs VIN, VOUT = 2.5 V
50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
100%
3.2 3.4 3.6 3.8 4 4.2 4.4 4.6 4.8 5
Effici ency [%]
Input voltage [V]
Iout 100µA
Iout 1mA
Iout 50mA
Iout 100mA
Iout 200mA
L=2.2 µH
Cout=10 µF
ST1PS02
Typical performance characteristics
DS13206 - Rev 1 page 11/23
Figure 8. 100% mode, VOUT = 1.8 V, 50 mA load Figure 9. 100% mode, VOUT = 2.5 V, 50 mA load
Figure 10. VOUT change, 1.8 V to 2.5 V to 1.8 V,
IOUT = 5 mA, VIN = 3.6 V
Figure 11. Output ripple, VIN=3.6 V, VOUT = 1.8 V,
IOUT = 10 µA
Figure 12. Output ripple, VIN=3.6 V, VOUT =1.8 V,
IOUT = 1 mA
Figure 13. Output ripple, VIN=3.6 V, VOUT =1.8 V,
IOUT = 50 mA
ST1PS02
Typical performance characteristics
DS13206 - Rev 1 page 12/23
Figure 14. Output ripple, VIN=3.6 V, VOUT =1.8 V,
IOUT = 150 mA
Figure 15. Output ripple, VIN=3.6 V, VOUT =1.8 V,
IOUT = 250 mA
Figure 16. Start-up, VIN=3.6 V, VOUT=1.8 V, no load Figure 17. Disable, VIN=3.6 V, VOUT =1.8 V, no load
Figure 18. Start-up, VIN=3.6 V, VOUT=1.8 V,
IOUT = 100 mA
Figure 19. Disable, VIN=3.6 V, VOUT = 1.8 V,
IOUT = 100 mA
ST1PS02
Typical performance characteristics
DS13206 - Rev 1 page 13/23
Figure 20. Load transient, VIN=3.6 V, VOUT=1.8 V,
IOUT =50 µA to 10 mA
Figure 21. Load transient, VIN=3.6 V, VOUT=1.8 V,
IOUT = 0 to 100 mA
Figure 22. Load transient, VIN=3.6 V, VOUT=1.8 V,
IOUT = 10 to 100 mA
Figure 23. Start-up, VIN = 3.6 V, Vout2 = 1.8 V,
no load
Figure 24. Disable, VIN = 3.6 V, Vout2 = 1.8 V,
no load
Figure 25. Start-up, VIN = 3.6, Vout2 = 1.8 V,
IOUT = 100 mA
ST1PS02
Typical performance characteristics
DS13206 - Rev 1 page 14/23
Figure 26. Disable, VIN = 3.6 V, Vout2 = 1.8 V, IOUT = 100 mA
ST1PS02
Typical performance characteristics
DS13206 - Rev 1 page 15/23
9Package information
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages,
depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product
status are available at: www.st.com. ECOPACK is an ST trademark.
9.1 TQFN12 (2.0x1.7x0.55 mm) package information
Figure 27. TQFN12 (2.0x1.7x0.55 mm) package outline
ST1PS02
Package information
DS13206 - Rev 1 page 16/23
Table 8. TQFN12 (2.0x1.7x0.55 mm) mechanical data
Symbol
Milimeters
Min. Typ. Max.
A 0.40 0.50 0.55
A1 0.00 0.03 0.05
A2 0.28 0.38 0.48
A3 0.125
b 0.15 0.20 0.25
D 1.60 1.70 1.80
E 1.90 2.00 2.10
e 0.40
L 0.35 0.45 0.55
aaa 0.15
bbb 0.10
ccc 0.08
ddd 0.05
eee 0.10
Figure 28. TQFN12 (2.0x1.7x0.55 mm) recommended footprint
ST1PS02
TQFN12 (2.0x1.7x0.55 mm) package information
DS13206 - Rev 1 page 17/23
10 Ordering information
Table 9. Ordering information
Order codes Output voltages Output discharge Package Packing
ST1PS02AQTR
1.40 V to 1.75 V, 50 mV steps
Yes
TQFN12
(2.0x1.7 mm)
400 μm pitch
Tape and reel
ST1PS02A1QTR No
ST1PS02BQTR
1.8 V to 2.5 V, 100 mV steps
Yes
ST1PS02B1QTR No
ST1PS02CQTR
2.6 V to 3.3 V, 100 mV steps
Yes
ST1PS02C1QTR No
ST1PS02DQTR
1.0 V to 1.35 V, 50 mV steps
Yes
ST1PS02D1QTR No
ST1PS02
Ordering information
DS13206 - Rev 1 page 18/23
Revision history
Table 10. Document revision history
Date Version Changes
17-Feb-2020 1 Initial release.
ST1PS02
DS13206 - Rev 1 page 19/23
Contents
1Application schematic .............................................................2
2Pin configuration ..................................................................3
3Functional pin description .........................................................4
4Maximum ratings ..................................................................5
5Electrical characteristics...........................................................6
6ST1PS02 block diagram............................................................9
7Operation description.............................................................10
7.1 Power save mode .............................................................10
7.2 Output voltage ................................................................10
7.3 Output discharge and UVLO ....................................................10
7.4 Soft-start and current limitation ..................................................10
7.5 100% duty cycle operation ......................................................10
7.6 Auxiliary output (Vout2) ........................................................10
7.7 Power Good flag ..............................................................10
8Typical performance characteristics ..............................................11
9Package information..............................................................16
9.1 TQFN12 (2x1.7x0.55) package information........................................16
10 Ordering information .............................................................18
Revision history .......................................................................19
ST1PS02
Contents
DS13206 - Rev 1 page 20/23
List of tables
Table 1. Typical external components ............................................................2
Table 2. Pin description......................................................................3
Table 3. Absolute maximum ratings .............................................................5
Table 4. Thermal data.......................................................................5
Table 5. Recommended operating conditions.......................................................5
Table 6. Electrical characteristics ...............................................................6
Table 7. Output voltage settings ................................................................8
Table 8. TQFN12 (2.0x1.7x0.55 mm) mechanical data ............................................... 17
Table 9. Ordering information................................................................. 18
Table 10. Document revision history ............................................................. 19
ST1PS02
List of tables
DS13206 - Rev 1 page 21/23
List of figures
Figure 1. ST1PS02 application schematic ........................................................2
Figure 2. TQFN12 package (top through view) .....................................................3
Figure 3. Block diagram ....................................................................9
Figure 4. Efficiency vs load, VOUT = 1.8 V ....................................................... 11
Figure 5. Efficiency vs VIN, VOUT = 1.8 V ........................................................ 11
Figure 6. Efficiency vs load, VOUT = 2.5 V ....................................................... 11
Figure 7. Efficiency vs VIN, VOUT = 2.5 V ........................................................ 11
Figure 8. 100% mode, VOUT = 1.8 V, 50 mA load .................................................. 12
Figure 9. 100% mode, VOUT = 2.5 V, 50 mA load .................................................. 12
Figure 10. VOUT change, 1.8 V to 2.5 V to 1.8 V, IOUT = 5 mA, VIN = 3.6 V.................................. 12
Figure 11. Output ripple, VIN=3.6 V, VOUT = 1.8 V, IOUT = 10 µA ......................................... 12
Figure 12. Output ripple, VIN=3.6 V, VOUT =1.8 V, IOUT = 1 mA.......................................... 12
Figure 13. Output ripple, VIN=3.6 V, VOUT =1.8 V, IOUT = 50 mA ......................................... 12
Figure 14. Output ripple, VIN=3.6 V, VOUT =1.8 V, IOUT = 150 mA ........................................ 13
Figure 15. Output ripple, VIN=3.6 V, VOUT =1.8 V, IOUT = 250 mA ........................................ 13
Figure 16. Start-up, VIN=3.6 V, VOUT=1.8 V, no load ................................................. 13
Figure 17. Disable, VIN=3.6 V, VOUT =1.8 V, no load ................................................. 13
Figure 18. Start-up, VIN=3.6 V, VOUT=1.8 V, IOUT = 100 mA ............................................ 13
Figure 19. Disable, VIN=3.6 V, VOUT = 1.8 V, IOUT = 100 mA ........................................... 13
Figure 20. Load transient, VIN=3.6 V, VOUT=1.8 V, IOUT =50 µA to 10 mA .................................. 14
Figure 21. Load transient, VIN=3.6 V, VOUT=1.8 V, IOUT = 0 to 100 mA .................................... 14
Figure 22. Load transient, VIN=3.6 V, VOUT=1.8 V, IOUT = 10 to 100 mA ................................... 14
Figure 23. Start-up, VIN = 3.6 V, Vout2 = 1.8 V, no load ............................................... 14
Figure 24. Disable, VIN = 3.6 V, Vout2 = 1.8 V, no load ............................................... 14
Figure 25. Start-up, VIN = 3.6, Vout2 = 1.8 V, IOUT = 100 mA ........................................... 14
Figure 26. Disable, VIN = 3.6 V, Vout2 = 1.8 V, IOUT = 100 mA .......................................... 15
Figure 27. TQFN12 (2.0x1.7x0.55 mm) package outline .............................................. 16
Figure 28. TQFN12 (2.0x1.7x0.55 mm) recommended footprint ......................................... 17
ST1PS02
List of figures
DS13206 - Rev 1 page 22/23
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ST1PS02
DS13206 - Rev 1 page 23/23
