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MP38900 Datasheet(PDF) 4 Page - Monolithic Power Systems

Part # MP38900
Description  High Efficiency, Fast Transient, 10A, 16V Synchronous Step-down Converter In a Tiny QFN20 Package
PDF  23 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP38900 Datasheet(HTML) 4 Page - Monolithic Power Systems

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MP38900/MP38900-B–HIGHEFFICIENCY,FASTTRANSIENTSYNCHRONOUSSTEP-DOWNCONVERTER
MP38900/MP38900-B Rev. 1.1
www.MonolithicPower.com
4
6/25/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, VCC=5V, TA = +25C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
Input Supply Current
(Shutdown)
IIN
VEN = 0V
0
1
μA
Input Supply Current
(Quiescent)
IIN
VEN = 2V, VFB = 0.95V,
MP38900-B
(6)
420
μA
Input Supply Current
(Quiescent)
IIN
VEN = 2V, VFB = 0.95V
MP38900
(6)
40
μA
VCC Supply Current
(Quiescent)
Ivcc
VEN = 2V, VFB = 1V
MP38900
350
μA
HS Switch On Resistance
(5)
HSRDS-ON
27
mΩ
LS Switch On Resistance
(5)
LSRDS-ON
10
mΩ
Switch Leakage
SWLKG
VEN = 0V, VSW = 0V or
12V
0
1
μA
Current Limit
ILIMIT
16.5
A
One-Shot On Time
TON
R7=250kΩ,
VOUT=1.05V
300
ns
Minimum Off Time
(5)
TOFF
100
ns
Fold-back Off Time
(5)
TFB
ILIM=1 (HIGH)
7.5
μs
OCP hold-off time
(5)
TOC
ILIM=1 (HIGH)
50
μs
Feedback Voltage
VFB
807
815
823
mV
Feedback Current
IFB
VFB = 815mV
10
50
nA
Soft Start Charging Current
+ISS
VSS=0V
8.5
μA
Soft Stop Discharging Current
-ISS
VSS=0.815V
8.5
μA
Power Good Rising Threshold
PGOODVth-Hi
0.9
VFB
Power Good Falling Threshold
PGOODVth-Lo
0.85
VFB
Power Good Rising Delay
TPGOOD
Tss = 2ms, MP38900
1.5
ms
Power Good Rising Delay
TPGOOD
MP38900-B
1.5
ms
EN Rising Threshold
ENVth-Hi
1.05
1.35
1.60
V
EN Threshold Hysteresis
ENVth-Hys
420
mV
EN Input Current
IEN
VEN = 2V
1.5
μA
VCC Under-Voltage Lockout
Threshold Rising
VCCUVVth
MP38900
3.8
4.0
4.2
V
VCC Under-Voltage Lockout
Threshold Hysteresis
VCCUVHYS
MP38900
880
mV
VIN Under-Voltage Lockout
Threshold Rising
VINUVVth
MP38900-B
3.8
4.0
4.2
V
VIN Under-Voltage Lockout
Threshold Hysteresis
VINUVHYS
MP38900-B
880
mV
VCC Regulator Output Voltage
VCC
MP38900-B
5
V
VCC Regulator Load Regulation
MP38900-B, ICC=5mA
5
%
VOUT Over-Voltage Protection
Threshold
VOVP
1.25
VFB



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