
LGA80D Series
Dual O/P Non-isolated 80 A Digital DC/DC Converter
Total Current: 80 A (single)
40 A (dual)
Input Voltage: 7.5 - 14 Vdc
Variable Output: 0.6 - 5.2 V
SPECIAL FEATURES
Two-phase design
Dual or single output conguration
possible
High efciency up to 95.5%
Small size 1” x 0.5” x 0.48” (LxWxH)
Supports PMBus
No minimum load requirement
Wide operating temperature range
Exceptional power density
Automatic loop compensation
Excellent transient response
Analog or digital control
IPC9592B compliant
Tape and reel packaging
Reow compatible
Possible to stack up to 8 phases for
320 A
Two year warranty (Consult factory
for extended terms)
SAFETY
Designed to meet EN60950-1
Electrical Specications
Input
Input voltage range 7.5 -14 Vdc
Max input current @ 7.5 V 33 A
Input capacitor (internal) 120 µF
Environmental and General Information
Operating ambient temperature -40 °C to +85 °C
Storage temperature -40 °C to +125 °C
Switching frequency (RSYNC = 23.7 Kohm) 457 kHz typical (can be congured)
CMTBF Telcordia SR-332, Issue 3, Method 1 Case 1 50 MHours
Protection
Overcurrent protection Refer to application note for detail
Overvoltage protection 110% Vo nominal
Overtemperature protection (controller temperature) 120 °C nominal
Output*
Independent output 1 and 2 0.6 V to 1 V
1.8 V
2.5 V
3.3 V
5 V
40 A
35 A
32.5 A
30 A
20 A
Combined output 1 and 2 0.6 V to 1 V
1.8 V
2.5 V
3.3 V
5 V
80 A
70 A
65 A
60 A
40 A
Efciency at 11 Vin and 25 °C 1 V @ 80 A
1.8 V @ 70 A
2.5 V @ 65 A
3.3 V @ 60 A
5 V @ 40 A
89.9% typical
93% typical
94.5% typical
95% typical
95.5% typical
Max output power (Watts) 200 W
*Output @ Vin = 12 V, Ta = 25 °C, unless otherwise noted
Data Sheet