LTM4604 Ver la hoja de datos (PDF) - Linear Technology
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LTM4604 Datasheet PDF : 20 Pages
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LTM4604
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 5V unless otherwise noted. See Figure 15.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
IS(VIN)
Input Supply Current
VIN = 2.5V, VOUT = 1.5V, IOUT = 4A
2.9
VIN = 3.3V, VOUT = 1.5V, IOUT = 4A
2.2
VIN = 5V, VOUT = 1.5V, IOUT = 4A
1.45
Output Specifications
IOUT(DC)
Output Continuous Current
Range (See Output Current
VIN = 3.3V, VOUT = 1.5V
Derating Curves for Different
VIN, VOUT and TA)
ΔVOUT(LINE)
Line Regulation Accuracy
VOUT = 1.5V, VIN from 2.375V to 5.5V, IOUT = 0A
●
4
0.1
0.2
VOUT
ΔVOUT(LOAD)
VOUT
VOUT(AC)
fS
Load Regulation Accuracy
Output Ripple Voltage
Output Ripple Voltage
Frequency
VOUT = 1.5V, 0A to 4A
VIN = 3.3V
VIN = 5V
IOUT = 0A, COUT = 22μF/X5R/Ceramic ×3
VIN = 3.3V, VOUT = 1.5V
VIN = 5V, VOUT = 1.5V
IOUT = 4A, VIN = 5V, VOUT = 1.5V
●
0.3
0.6
●
0.3
0.6
10
12
1.25
ΔVOUT(START)
Turn-On Overshoot
COUT = 22μF ×3, VOUT = 1.5V, RUN/SS = 10nF,
IOUT = 0A
VIN = 3.3V
20
VIN = 5V
20
tSTART
Turn-on Time
COUT = 22μF ×3, VOUT = 1.5V, IOUT = 1A Resistive Load,
TRACK = VIN and RUN/SS = Float
VIN = 3.3V
1.5
VIN = 5V
1.0
ΔVOUT(LS)
Peak Deviation for Dynamic Load: 0% to 50% to 0% of Full Load,
Load Step
COUT = 22μF ×3 Ceramic
VIN = 5V, VOUT = 1.5V
25
tSETTLE
Settling Time for Dynamic Load: 0% to 50% to 0% of Full Load
Load Step
VIN = 5V, VOUT = 1.5V
10
IOUT(PK)
Output Current Limit
COUT = 22μF ×3
VIN = 3.3V, VOUT = 1.5V
8
VIN = 5V, VOUT = 1.5V
8
Control Section
VFB
IFB
VRUN
ITRACK
VTRACK(OFFSET)
VTRACK(RANGE)
RFBHI
Voltage at FB Pin
RUN Pin On/Off Threshold
TRACK Pin Current
Offset Voltage
Tracking Input Range
Resistor Between VOUT and
FB Pins
IOUT = 0A, VOUT = 1.5V, 0°C ≤ TA ≤ 85°C
IOUT = 0A, VOUT = 1.5V
TRACK = 0.4V
0.792 0.8 0.808
● 0.788 0.8 0.812
0.2
0.5 0.65 0.8
0.2
30
0
0.8
4.975 4.99 5.025
PGOOD
ΔVPGOOD
RPGOOD
PGOOD Range
PGOOD Resistance
Open-Drain Pull-Down
±7.5
90 150
UNITS
A
A
A
A
%
%
%
mVP-P
mVP-P
MHz
mV
mV
ms
ms
mV
μs
A
A
V
V
μA
V
μA
mV
V
kΩ
%
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 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 LTM4604I is guaranteed over the full
–40°C to 85°C temperature range.
4604f
3
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