LTM4616(RevA) 查看數據表（PDF） - Linear Technology
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LTM4616 Datasheet PDF : 24 Pages
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LTM4616
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the –40°C to 125°C
internal operating temperature range. TA = 25°C, VIN = 5V unless otherwise noted. Per the typical application in Figure 18. Specified
as each channel (Note 3).
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
IQ(VIN1, VIN2)
Input Supply Bias Current
VIN = 3.3V, VOUT = 1.5V, No Switching, Mode = VIN
400
μA
VIN = 3.3V, VOUT = 1.5V, No Switching, Mode = 0V
1.15
mA
VIN = 3.3V, VOUT = 1.5V, Switching Continuous
55
mA
VIN = 5V, VOUT = 1.5V, No Switching, Mode = VIN
VIN = 5V, VOUT = 1.5V, No Switching, Mode = 0V
VIN = 5V, VOUT = 1.5V, Switching Continuous
450
μA
1.3
mA
75
mA
Shutdown, RUN = 0, VIN = 5V
1
μA
IS(VIN1, VIN2)
Input Supply Current
VIN = 3.3V, VOUT = 1.5V, IOUT = 8A
VIN = 5V, VOUT = 1.5V, IOUT = 8A
4.5
A
2.93
A
Output Specifications
IOUT1(DC), IOUT2(DC)
ΔVOUT1(LINE)/VOUT1
ΔVOUT2(LINE)/VOUT2
Output Continuous Current Range VOUT = 1.5V
(Note 4)
VIN = 3.3V, 5.5V
VIN = 2.7V
Line Regulation Accuracy
VOUT = 1.5V, VIN from 2.7V to 5.5V, IOUT = 0A
0
0
●
8
A
5
A
0.1
0.25
%/V
ΔVOUT1(LOAD)/VOUT1 Load Regulation Accuracy
VOUT = 1.5V (Note 4)
ΔVOUT2(LOAD)/VOUT2
VIN = 3.3V, 5.5V, ILOAD = 0A to 8A
●
0.3
0.5
%
VIN = 2.7V, ILOAD = 0A to 5A
●
0.3
0.5
%
VOUT1(AC), VOUT2(AC) Output Ripple Voltage
IOUT = 0A, COUT = 100μF X5R Ceramic, VIN = 5V,
VOUT = 1.5V
10
mVP-P
fS1, fS2
Switching Frequency
IOUT = 8A, VIN = 5V, VOUT = 1.5V
1.25
1.5
1.75
MHz
fSYNC1, fSYNC2
SYNC Capture Range
0.75
2.25
MHz
ΔVOUT1(START),
ΔVOUT2(START)
Turn-On Overshoot
COUT = 100μF, VOUT = 1.5V, IOUT = 0A
VIN = 3.3V
VIN = 5V
10
mV
10
mV
tSTART1, tSTART2
Turn-On Time
COUT = 100μF, VOUT = 1.5V, VIN = 5V,
IOUT = 1A Resistive Load, Track = VIN
100
μs
ΔVOUT1(LS),
ΔVOUT2(LS)
Peak Deviation for Dynamic Load Load: 0% to 50% to 0% of Full Load,
COUT = 100μF Ceramic x2, 470μF POSCAP,
VIN = 5V, VOUT = 1.5V
20
mV
tSETTLE1, tSETTLE2
Settling Time for Dynamic Load Load: 0% to 50% to 0% of Full Load, VIN = 5V,
Step
VOUT = 1.5V, COUT = 100μF
10
μs
IOUT1(PK), IOUT2(PK) Output Current Limit
COUT = 100μF
VIN = 2.7V, VOUT = 1.5V
VIN = 3.3V, VOUT = 1.5V
VIN = 5V, VOUT = 1.5V
8
A
11
A
13
A
Control Section
FB1, FB2
Voltage at FB Pin
IOUT = 0A, VOUT = 1.5V, VIN = 2.7V to 5.5V
0.590 0.596 0.602
V
● 0.587 0.596 0.606
V
SS Delay
Internal Soft-Start Delay
90
μs
IFB
VRUN1, VRUN2
RUN Pin On/Off Threshold
TRACK1, TRACK2
Tracking Threshold (Rising)
Tracking Threshold (Falling)
Tracking Disable Threshold
RUN Rising
RUN Falling
RUN = VIN
RUN = 0V
0.2
μA
1.4
1.55
1.7
V
1.3
1.4
1.5
V
0.57
V
0.18
V
VIN – 0.5
V
4616fa
3
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