LTM4600
ELECTRICAL CHARACTERISTICS
SYMBOL
I
S(VIN)
PARAMETER
Input Supply Current
The
l
denotes the specifications which apply over the –40°C to 85°C
temperature range, otherwise specifications are at T
A
= 25°C, V
IN
= 12V. Per typical application (front page) configuration.
CONDITIONS
V
IN
= 12V, V
OUT
= 1.5V, I
OUT
= 10A
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 10A
V
IN
= 5V, V
OUT
= 1.5V, I
OUT
= 10A
0
MIN
TYP
1.52
3.13
3.64
10
MAX
UNITS
A
A
A
A
Output Specifications
I
OUTDC
Output Continuous Current Range
V
IN
= 12V, V
OUT
= 1.5V
(See Output Current Derating Curves for
Different V
IN
, V
OUT
and T
A
)
Line Regulation Accuracy
Load Regulation Accuracy
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 (Notes 3, 4)
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
= 1A
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 POSCAP
,
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
I
OUT
= 0A, V
OUT
= 1.5V
l
l
ΔV
OUT(LINE)
V
OUT
ΔV
OUT(LOAD)
V
OUT
V
OUT(AC)
fs
t
START
0.15
0.3
%
l
±1
±1.5
10
850
0.5
0.7
36
15
%
%
mV
P-P
kHz
ms
ms
mV
Output Ripple Voltage
Output Ripple Voltage Frequency
Turn-On Time
ΔV
OUTLS
Voltage Drop for Dynamic Load Step
t
SETTLE
I
OUTPK
Settling Time for Dynamic Load Step
Output Current Limit
25
14
14
0.591
0.594
0.8
–0.5
0.8
0.6
0.6
1.5
–1.2
1.8
100
16
100
0.57
0.6
–1
7.5
–7.5
10
–10
2
0.15
0.4
0.63
–2
12.5
–12.5
0.609
0.606
2
–3
3
μs
A
A
V
V
V
μA
μA
mV
mA
kΩ
V
μA
%
%
%
V
Control Stage
V
OSET
V
RUN/SS
I
RUN(C)/SS
I
RUN(D)/SS
V
IN
– SV
IN
I
EXTVCC
R
FBHI
V
FCB
I
FCB
PGOOD Output
ΔV
OSETH
ΔV
OSETL
ΔV
OSET(HYS)
V
PGL
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
V
OSET
Rising
V
OSET
Falling
V
OSET
Returning
I
PGOOD
= 5mA
Current into EXTV
CC
Pin
Resistor Between V
OUT
and V
OSET
Pins
Forced Continuous Threshold
Forced Continuous Pin Current
V
FCB
= 0.6V
Voltage at V
OSET
Pin
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
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 over the
–40°C to 85°C temperature range.
Note 3:
Test assumes current derating versus temperature.
Note 4:
Guaranteed by correlation.
4600fc
3
LINER [ LINEAR TECHNOLOGY ]
