LTM4614
TYPICAL PERFORMANCE CHARACTERISTICS
V OUT
1V/DIV
Start-Up
V OUT
1V/DIV
Start-Up
806
804
V FB vs Temperature
802
I IN
1A/DIV
I IN
1A/DIV
800
798
V IN = 5V 200μs/DIV
V OUT = 2.5V
C OUT = 100μF
NO LOAD
(0.01μF SOFT-START CAPACITOR)
4614 G10
V IN = 5V 200μs/DIV
V OUT = 2.5V
C OUT = 100μF
4A LOAD
(0.01μF SOFT-START CAPACITOR)
4614 G11
796
794
–50
–25
0 25
50
75
100
125
TEMPERATURE (°C)
4614 G12
1.6
1.4
1.2
1.0
0.8
0.6
Current Limit Foldback
V OUT
0.5V/DIV
I IN
1A/DIV
Short-Circuit Protection
1.5V Short, No Load
V OUT
0.5V/DIV
I IN
1A/DIV
Short-Circuit Protection
1.5V Short, 4A Load
0.4
0.2
0
3
V OUT = 1.5V
V IN = 5V
V IN = 3.3V
V IN = 2.5V
4 5
6
7
8
20μs/DIV
4614 G14
100μs/DIV
4614 G15
OUTPUT CURRENT (A)
4614 G13
PIN FUNCTIONS
V IN1 , V IN2 (J1-J6, K1-K6); (C1-C6, D1-D6): Power Input
Pins. Apply input voltage between these pins and GND
pins. Recommend placing input decoupling capacitance
directly between V IN pins and GND pins.
V OUT1 , V OUT2 (J9-J12, K9-K12, L9-L12, M9-M12); (C9-C12,
D9-D12, E9-E12, F9-F12): Power Output Pins. Apply out-
put load between these pins and GND pins. Recommend
placing output decoupling capacitance directly between
these pins and GND pins. Review Table 4.
GND1, GND2, (G1-G12, H1, H7-H12, J7-J8, K7-K8, L1,
L7-L8, M1-M8); (A1-A12, B1, B7-B12, C7-C8, D7-D8,
E1, E7-E8, F1-F8): Power Ground Pins for Both Input
and Output Returns.
TRACK1, TRACK2 (L3, E3): Output Voltage Tracking Pins.
When the module is configured as a master output, then a
soft-start capacitor is placed on the RUN/SS pin to ground
to control the master ramp rate, or an external ramp can
be applied to the master regulator’s track pin to control it.
4614fb
5
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