Datasheet

LTM4601/LTM4601-1
3
4601fd
For more information www.linear.com/LTM4601
elecTrical characTerisTics
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN(DC)
Input DC Voltage
l
4.5 20 V
V
OUT(DC)
Output Voltage
C
IN
= 10µF ×3, C
OUT
= 200µF, R
SET
= 40.2k
V
IN
= 5V, V
OUT
= 1.5V, I
OUT
= 0A
V
IN
= 12V, V
OUT
= 1.5V, I
OUT
= 0A
l
l
1.478
1.478
1.5
1.5
1.522
1.522
V
V
Input Specifications
V
IN(UVLO)
Undervoltage Lockout Threshold I
OUT
= 0A 3.2 4 V
I
INRUSH(VIN)
Input Inrush Current at Start-Up I
OUT
= 0A. V
OUT
= 1.5V
V
IN
= 5V
V
IN
= 12V
0.6
0.7
A
A
I
Q(VIN,NOLOAD)
Input Supply Bias Current V
IN
= 12V, No Switching
V
IN
= 12V, V
OUT
= 1.5V, Switching Continuous
V
IN
= 5V, No Switching
V
IN
= 5V, V
OUT
= 1.5V, Switching Continuous
Shutdown, RUN = 0, V
IN
= 12V
3.8
38
2.5
42
22
mA
mA
mA
mA
µA
I
S(VIN)
Input Supply Current V
IN
= 12V, V
OUT
= 1.5V, I
OUT
= 12A
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 12A
V
IN
= 5V, V
OUT
= 1.5V, I
OUT
= 12A
1.81
3.63
4.29
A
A
A
INTV
CC
V
IN
= 12V, RUN > 2V No Load 4.7 5 5.3 V
Output Specifications
I
OUTDC
Output Continuous Current Range V
IN
= 12V, V
OUT
= 1.5V (Note 6) 0 12 A
ΔV
OUT(LINE)
V
OUT
Line Regulation Accuracy V
OUT
= 1.5V, I
OUT
= 0A, V
IN
from 4.5V to 20V
l
0.3 %
ΔV
OUT(LOAD)
V
OUT
Load Regulation Accuracy V
OUT
= 1.5V, 0A to 12A (Note 6)
V
IN
= 12V, with Remote Sense Amplifier
V
IN
= 12V (LTM4601-1)
l
l
0.25
1
%
%
V
OUT(AC)
Output Ripple Voltage
I
OUT
= 0A, C
OUT
= 2× 100µF X5R Ceramic
V
IN
= 12V, V
OUT
= 1.5V
V
IN
= 5V, V
OUT
= 1.5V
20
18
mV
P-P
mV
P-P
f
S
Output Ripple Voltage Frequency I
OUT
= 5A, V
IN
= 12V, V
OUT
= 1.5V 850 kHz
ΔV
OUT(START)
Turn-On Overshoot C
OUT
= 200µF, V
OUT
= 1.5V, I
OUT
= 0A,
TRACK/SS = 10nF
V
IN
= 12V
V
IN
= 5V
20
20
mV
mV
t
START
Turn-On Time C
OUT
= 200µF, V
OUT
= 1.5V, TRACK/SS = Open,
I
OUT
= 1A Resistive Load
V
IN
= 12V
V
IN
= 5V
0.5
0.5
ms
ms
ΔV
OUTLS
Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load,
C
OUT
= 2 × 22µF Ceramic, 470µF 4V Sanyo
POSCAP
V
IN
= 12V
V
IN
= 5V
35
35
mV
mV
t
SETTLE
Settling Time for Dynamic Load Step Load: 0% to 50%, or 50% to 0% of Full Load
V
IN
= 12V 25 µs
I
OUTPK
Output Current Limit C
OUT
= 200µF Ceramic
V
IN
= 12V, V
OUT
= 1.5V
V
IN
= 5V, V
OUT
= 1.5V
17
17
A
A
The l denotes the specifications which apply over the –40°C to 85°C
temperature range (Note 2), otherwise specifications are at T
A
= 25°C, V
IN
= 12V, per typical application (front page) configuration.