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LTM4604
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V IN = 5V unless otherwise noted. See Figure 15.
SYMBOL
I S(VIN)
PARAMETER
Input Supply Current
CONDITIONS
V IN = 2.5V, V OUT = 1.5V, I OUT = 4A
MIN
TYP
2.9
MAX
UNITS
A
Output Speci?cations
V IN = 3.3V, V OUT = 1.5V, I OUT = 4A
V IN = 5V, V OUT = 1.5V, I OUT = 4A
2.2
1.45
A
A
I OUT(DC)
Output Continuous Current
V IN = 3.3V, V OUT = 1.5V
4
A
Range (See Output Current
Derating Curves for Different
V IN , V OUT and T A )
Δ V OUT(LINE)
Line Regulation Accuracy
V OUT = 1.5V, V IN from 2.375V to 5.5V, I OUT = 0A
l
0.1
0.2
%
V OUT
Δ V OUT(LOAD)
V OUT
V OUT(AC)
f S
Load Regulation Accuracy
Output Ripple Voltage
Output Ripple Voltage
V OUT = 1.5V, 0A to 4A
V IN = 3.3V
V IN = 5V
I OUT = 0A, C OUT = 22μF/X5R/Ceramic × 3
V IN = 3.3V, V OUT = 1.5V
V IN = 5V, V OUT = 1.5V
I OUT = 4A, V IN = 5V, V OUT = 1.5V
l
l
0.3
0.3
10
12
1.25
0.6
0.6
%
%
mV P-P
mV P-P
MHz
Frequency
Δ V OUT(START)
Turn-On Overshoot
C OUT = 22μF × 3, V OUT = 1.5V, RUN/SS = 10nF,
I OUT = 0A
V IN = 3.3V
V IN = 5V
20
20
mV
mV
t START
Turn-on Time
C OUT = 22μF × 3, V OUT = 1.5V, I OUT = 1A Resistive Load,
TRACK = V IN and RUN/SS = Float
V IN = 3.3V
V IN = 5V
1.5
1.0
ms
ms
Δ V OUT(LS)
Peak Deviation for Dynamic
Load Step
Load: 0% to 50% to 0% of Full Load,
C OUT = 22μF × 3 Ceramic
V IN = 5V, V OUT = 1.5V
25
mV
t SETTLE
Settling Time for Dynamic
Load: 0% to 50% to 0% of Full Load
Load Step
V IN = 5V, V OUT = 1.5V
10
μs
I OUT(PK)
Output Current Limit
C OUT = 22μF × 3
V IN = 3.3V, V OUT = 1.5V
V IN = 5V, V OUT = 1.5V
8
8
A
A
Control Section
V FB
Voltage at FB Pin
I OUT = 0A, V OUT = 1.5V, 0°C ≤ T A ≤ 85°C
I OUT = 0A, V OUT = 1.5V
l
0.792
0.788
0.8
0.8
0.808
0.812
V
V
I FB
0.2
μA
V RUN
I TRACK
RUN Pin On/Off Threshold
TRACK Pin Current
0.5
0.65
0.2
0.8
V
μA
V TRACK(OFFSET)
V TRACK(RANGE)
Offset Voltage
Tracking Input Range
TRACK = 0.4V
0
30
0.8
mV
V
R FBHI
Resistor Between V OUT and
FB Pins
4.975
4.99
5.025
k Ω
PGOOD
Δ V PGOOD
PGOOD Range
±7.5
%
R PGOOD
PGOOD Resistance
Open-Drain Pull-Down
90
150
Ω
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 LTM4604E is guaranteed to meet performance speci?cations
from 0°C to 85°C. Speci?cations over the – 40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LTM4604I is guaranteed over the full
–40°C to 85°C operating temperature range.
4604fa
3
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