Linear Technology LTM4637EV Demo Board, µModule Regulator, 4.5V ≤ VIN ≤ 20V, Vout = 1V to 1.8V @ 20A DC1872A DC1872A 데이터 시트
제품 코드
DC1872A
LTM4637
3
4637fc
elecTrical characTerisTics
The
l
denotes the specifications which apply over the specified internal
operating temperature range (Note 2), otherwise specifications are at T
A
= 25°C. V
IN
= 12V, per the typical application in Figure 22.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
IN
Input DC Voltage
l
4.5
20
V
V
OUT
Range
V
OUT
Range
l
0.6
5.5
V
V
OUT(DC)
Output Voltage, Total
Variation with Line and Load
C
IN
= 22µF
× 3
C
OUT
= 100µF Ceramic, 470µF POSCAP
R
FB
= 40.2k, MODE_PLLIN = GND
V
IN
= 5V to 20V, I
OUT
= 0A to 20A (Note 4)
l
1.477
1.50
1.523
V
Input Specifications
V
V
RUN
RUN Pin On Threshold
V
RUN
Rising
1.1
1.25
1.4
V
V
RUNHYS
RUN Pin On Hysteresis
130
mV
I
Q(VIN)
Input Supply Bias Current
V
IN
= 12V, V
OUT
= 1.5V, Burst Mode Operation, I
OUT
= 0.1A
V
IN
= 12V, V
OUT
= 1.5V, Pulse-Skipping Mode, I
OUT
= 0.1A
V
IN
= 12V, V
OUT
= 1.5V, Switching Continuous, I
OUT
= 0.1A
Shutdown, RUN = 0, V
IN
= 12V
17
25
54
40
mA
mA
mA
µA
I
S(VIN)
Input Supply Current
V
IN
= 5V, V
OUT
= 1.5V, I
OUT
= 20A
V
IN
= 12V, V
OUT
= 1.5V, I
OUT
= 20A
6.8
2.87
A
A
Output Specifications
I
I
OUT(DC)
Output Continuous Current
Range
V
IN
= 12V, V
OUT
= 1.5V (Note 4)
0
20
A
∆V
OUT
(Line)
V
OUT
Line Regulation Accuracy
V
OUT
= 1.5V, V
IN
from 4.5V to 20V
I
OUT
= 0A
l
0.02
0.06
%/V
∆V
OUT
(Load)
V
OUT
Load Regulation Accuracy
V
OUT
= 1.5V, I
OUT
= 0A to 20A, V
IN
= 12V (Note 4)
l
0.2
0.45
%
V
OUT(AC)
Output Ripple Voltage
I
OUT
= 0A, C
OUT
= 100µF Ceramic, 470µF POSCAP
V
IN
= 12V, V
OUT
= 1.5V
30
mV
P-P
∆V
OUT(START)
Turn-On Overshoot
C
OUT
= 100µF Ceramic, 470µF POSCAP,
V
OUT
= 1.5V, I
OUT
= 0A, V
IN
= 12V
15
mV
t
START
Turn-On Time
C
OUT
= 100µF Ceramic, 470µF POSCAP,
No Load, TRACK/SS = 0.001µF, V
IN
= 12V
0.6
ms
∆V
OUTLS
Peak Deviation for Dynamic
Load
Load: 0% to 50% to 0% of Full Load
C
OUT
= 100µF
× 2 Ceramic, 470µF × 3 POSCAP,
V
IN
= 12V, V
OUT
= 1.5V
50
mV
t
SETTLE
Settling Time for Dynamic
Load Step
Load: 0% to 50% to 0% of Full Load, V
IN
= 5V,
C
OUT
= 100µF
× 2 Ceramic, 470µF × 3 POSCAP
50
µs
I
OUTPK
Output Current Limit
V
IN
= 12V, V
OUT
= 1.5V
V
IN
= 5V, V
OUT
= 1.5V
30
30
A
A
Control Section
V
V
FB
Voltage at V
FB
Pin
I
OUT
= 0A, V
OUT
= 1.5V
l
0.594
0.60
0.606
V
I
FB
Current at V
FB
Pin
(Note 7)
–12
–25
nA
V
OVL
Feedback Overvoltage
Lockout
l
0.65
0.67
0.69
V
I
TRACK/SS
Track Pin Soft-Start Pull-Up
Current
TRACK/SS = 0V
1.0
1.2
1.4
µA
t
ON(MIN)
Minimum On-Time
(Note 3)
100
ns
R
FBHI
Resistor Between V
OUT_LCL
and V
FB
Pins
60.05
60.40
60.75
kΩ
Remote Sense Amplifier
V
V
OSNS
+
,
V
OSNS– CM RANGE
Common Mode Input Range V
IN
= 12V, Run > 1.4V
0
3.6
V
V
DIFF_OUT(MAX)
Maximum DIFF_OUT
Voltage
I
DIFF_OUT
= 300µA
INTV
CC
– 1.4
V