
LTM4600
3
4600fa
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
The LTM4600E is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LTM4600I is guaranteed and tested
over the –40°C to 85°C temperature range.
Note 3:
Test assumes current derating verses temperature.
SYMBOL
Output Specifications
I
OUTDC
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Output Continuous Current Range
(See Output Current Derating Curves for
Different V
IN
, V
OUT
and T
A
)
Line Regulation Accuracy
V
IN
= 12V, V
OUT
= 1.5V
0
10
A
Δ
V
OUT
/
Δ
V
IN
V
OUT
= 1.5V, I
OUT
= 0A, FCB = 0V,
V
IN
= 4.5V to 20V
V
OUT
= 1.5V, I
OUT
= 0A to 10A, FCB = 0V
V
IN
= 5V
V
IN
= 12V (Note 3)
V
IN
= 12V, V
OUT
= 1.5V, I
OUT
= 0A, FCB = 0V
V
OUT
= 1.5V, I
OUT
= 5A, FCB = 0V
V
OUT
= 1.5V, I
OUT
= 10A
V
IN
= 12V
V
IN
= 5V
V
OUT
= 1.5V, Load Step: 0A/μs to 5A/μs
C
OUT
= 3 22μF 6.3V, 470μF 4V Pos Cap,
See Table 2
Load: 10% to 90% to 10% of Full Load
Output Voltage in Foldback
V
IN
= 12V, V
OUT
= 1.5V
V
IN
= 5V, V
OUT
= 1.5V
●
0.15
0.3
%
Δ
V
OUT
/
Δ
I
OUT
Load Regulation Accuracy
●
±1
±1.5
15
%
%
V
OUT(AC)
fs
t
START
Output Ripple Voltage
Output Ripple Voltage Frequency
Turn-On Time
10
800
mV
P-P
kHz
0.5
0.7
36
ms
ms
mV
Δ
V
OUTLS
Voltage Drop for Dynamic Load Step
t
SETTLE
I
OUTPK
Settling Time for Dynamic Load Step
Output Current Limit
25
μs
14
14
A
A
Control Stage
V
OSET
Voltage at V
OSET
Pin
I
OUT
= 0A, V
OUT
= 1.5V
●
0.591
0.594
0.8
–0.5
0.8
0.6
0.6
1.5
–1.2
1.8
100
16
0.609
0.606
2
–3
3
V
V
V
V
RUN/SS
I
RUN(C)/SS
I
RUN(D)/SS
V
IN
– SV
IN
I
EXTVCC
RUN ON/OFF Threshold
Soft-Start Charging Current
Soft-Start Discharging Current
V
RUN/SS
= 0V
V
RUN/SS
= 4V
EXTV
CC
= 0V, FCB = 0V
EXTV
CC
= 5V, FCB = 0V, V
OUT
= 1.5V,
I
OUT
= 0A
μA
μA
mV
mA
Current into EXTV
CC
Pin
R
FBHI
V
FCB
I
FCB
PGOOD Output
Δ
V
OSETH
Δ
V
OSETL
Δ
V
OSET(HYS)
V
PGL
Resistor Between V
OUT
and FB Pins
Forced Continuous Threshold
Forced Continuous Pin Current
100
0.6
–1
k
Ω
0.57
0.63
–2
V
V
FCB
= 0.6V
μA
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
V
OSET
Rising
V
OSET
Falling
V
OSET
Returning
I
PGOOD
= 5mA
7.5
–7.5
10
–10
2
0.15
12.5
–12.5
%
%
%
V
0.4
temperature range, otherwise specifications are at T
A
= 25°C, V
IN
= 12V. Per typical application (front page) configuration.
The
●
denotes the specifications which apply over the –40°C to 85°C
ELECTRICAL CHARACTERISTICS