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MP38876 Datasheet(PDF) 3 Page - Monolithic Power Systems

Part # MP38876
Description  15A, 28V, High Frequency Step-Down Converter with Synchronous Gate Driver
PDF  15 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP38876 Datasheet(HTML) 3 Page - Monolithic Power Systems

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MP38876 – 15A, 28V, HIGH FREQUENCY STEP-DOWN WITH SYNCHRONOUS GATE DRIVER
MP38876 Rev. 0.91
www.MonolithicPower.com
3
11/4/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
TA =+25°C
0.798
0.810
0.822
V
Feedback Voltage
VFB
-40
°C ≤ TA ≤ +85°C
0.794
0.826
V
Feedback Current
IFB
VFB = 0.8V
10
nA
Switch On Resistance
(5)
RDS(ON)
25
mΩ
Switch Leakage
VEN = 0V, VSW = 0V
0.1
10
μA
Current Limit
(5)
21
A
Oscillator Frequency
fSW
VFB = 0.6V, SYNCIN = 5V
400
kHz
Fold-back Frequency
VFB = 0V
100
kHz
Maximum Duty Cycle
VFB = 0.6V
90
%
Minimum On Time
(5)
tON
100
ns
Soft-Start Charging Current
ISS
VSS = 0V
8
μA
Maximum COMP Level
VCOMP_MAX VFB = 0.6V
4.4
V
Gain of Error Amplifier
GEA
VCOMP = 1.5V
2
mA/V
Error Amplifier Sink Current
VCOMP = 1.5V
–270
μA
Error Amplifier Source Current
VCOMP = 1.5V
+270
μA
Power Good Ramp Up Threshold
90
%
Power Good Ramp Down Threshold
85
%



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