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LTM4615
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full internal
operating temperature range (Note 2), otherwise specifications are at T A = 25°C, V IN = 5V, LDO_IN = 1.2V unless otherwise noted.
Per Typical Application Figure 12.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Switching Regulator Section: per Channel
V IN(DC)
V OUT(DC)
Input DC Voltage Range
Output DC Voltage Range
l
l
2.375
0.8
5.5
5.0
V
V
V OUT(DC)
V IN(UVLO)
Output Voltage
Undervoltage Lockout Threshold
C IN = 22μF, C OUT = 100μF, R FB = 5.76k,
V IN = 2.375V to 5.5V, I OUT = 0A to 4A (Note 6)
0°C ≤ T J ≤ 125°C
I OUT = 0A
l
1.460
1.45
1.6
1.49
1.49
2
1.512
1.512
2.3
V
V
V
I INRUSH(VIN)
Input Inrush Current at Start-Up
I OUT = 0A, C IN = 22μF, C OUT = 100μF, V OUT = 1.5V,
V IN = 5.5V
0.35
A
I Q(VIN)
I S(VIN)
I OUT(DC)
Input Supply Bias Current
Input Supply Current
Output Continuous Current Range
V IN = 2.375V, V OUT = 1.5V, Switching Continuous
V IN = 5.5V, V OUT = 1.5V, Switching Continuous
Shutdown, RUN = 0, V IN = 5V
V IN = 2.375V, V OUT = 1.5V, I OUT = 4A
V IN = 5.5V, V OUT = 1.5V, I OUT = 4A
V IN = 5.5V, V OUT = 1.5V (Note 6)
0
28
45
7
3.2
1.48
12
4
mA
mA
μA
A
A
A
? V OUT(LOAD + LINE)
V OUT
V OUT(AC)
f s
? V OUT(START)
t START
? V OUT(LS)
t SETTLE
I OUT(PK)
Load and Line Regulation Accuracy V OUT = 1.5V, 0A to 4A (Note 6)
V IN = 2.375V to 5.5V
Output Ripple Voltage
I OUT = 0A, C OUT = 100μF
V IN = 5V, V OUT = 1.5V
Output Ripple Voltage Frequency
I OUT = 4A, V IN = 5V, V OUT = 1.5V
Turn-On Overshoot
C OUT = 100μF, V OUT = 1.5V, RUN/SS = 10nF,
I OUT = 0A
V IN = 3.3V
V IN = 5V
Turn-On Time
C OUT = 100μF, V OUT = 1.5V, I OUT = 1A Resistive
Load, TRACK = V IN and RUN/SS = Float
V IN = 5V
Peak Deviation for Dynamic Load
Load: 0% to 50% to 0% of Full Load,
C OUT = 100μF, V IN = 5V, V OUT = 1.5V
Settling Time for Dynamic Load
Load: 0% to 50% to 0% of Full Load,
Step
V IN = 5V, V OUT = 1.5V
Output Current Limit
C OUT = 100μF, V IN = 5V, V OUT = 1.5V
l
±1.0
±1.3
12
1.25
20
20
0.5
25
10
8
±1.30
±1.6
%
%
mV P-P
MHz
mV
mV
ms
mV
μs
A
V FB
Voltage at FB Pin
I OUT = 0A, V OUT = 1.5V
l
0.790
0.786
0.8
0.8
0.807
0.809
V
V
I FB
0.2
μA
V RUN
I TRACK
RUN Pin On/Off Threshold
TRACK Pin Current
0.6
0.75
0.2
0.9
V
μA
V TRACK(OFFSET)
V TRACK(RANGE)
Offset Voltage
Tracking Input Range
TRACK = 0.4V
0
30
0.8
mV
V
R FBHI
?V PGOOD
R PGOOD
Resistor Between V OUT and FB Pins
PGOOD Range
PGOOD Resistance
Open-Drain Pull-Down
4.96
4.99
±7.5
90
5.02
150
kΩ
%
Ω
3
For more information www.linear.com/LTM4615
4615fb
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