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PDF MP8762H Datasheet ( Hoja de datos )

Número de pieza MP8762H
Descripción Synchronous Step-down Converter
Fabricantes MPS 
Logotipo MPS Logotipo

Total 30 Páginas
		
MP8762H Hoja de datos, Descripción, Manual
The Future of Analog IC Technology
DESCRIPTION
The MP8762H is a fully integrated high
frequency synchronous rectified step-down
switch mode converter. It offers a very compact
solution to achieve 10A output current over a
wide input supply range with excellent load and
line regulation. The MP8762H operates at high
efficiency over a wide output current load range.
The MP8762H adopts Constant-On-Time (COT)
control mode that provides fast transient
response and eases loop stabilization.
Operation frequency can be programmed easily
from 200kHz to 1MHz by an external resistor
and keeps nearly constant as input supply
varies by the feedforward compensation.
VCC under voltage lockout is internally set at
3.8V, but can be increased by programming the
threshold with a resistor network on the enable
pin. The output voltage startup ramp is
controlled by the soft start pin. An open drain
power good signal indicates the output is within
its nominal voltage range.
Full integrated protection features include OCP,
OVP and thermal shutdown.
The MP8762H requires a minimum number of
readily available standard external components
and are available in QFN 3X4 package.
TYPICAL APPLICATION
MP8762H
High Efficiency, 10A, 18V
Synchronous Step-down Converter
FEATURES
2.5V to 5V Operating Input Range with
External 5V Bias
4.5V to 18V Operating Input Range with
Internal Bias
10A Output Current
Low RDS(ON) Internal Power MOSFETs
Proprietary Switching Loss Reduction
Technique
Adaptive COT for Ultrafast Transient
Response
1.5% Reference Voltage Over -40C to
+125C Junction Temperature Range
Programmable Soft Start Time
Pre-Bias Start up
Programmable Switching Frequency from
200kHz to 1MHz
Non-latch OCP, OVP Protection and
Thermal Shutdown
Output Adjustable from 0.611V to 13V
APPLICATIONS
Set-top Boxes
XDSL Modem/DSLAM
Small-cell Base Stations
Personal Video Recorders
Flat Panel Television and Monitors
Distributed Power Systems
All MPS parts are lead-free, halogen free, and adhere to the RoHS
directive. For MPS green status, please visit MPS website under Quality
Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered
Trademarks of Monolithic Power Systems, Inc.
MP8762H Rev. 1.11
www.MonolithicPower.com
5/3/2016
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
1

1 page

MP8762H pdf
MP8762H 10A, 18V, SYNCHRONOUS STEP-DOWN CONVERTER
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, TJ = +25C, unless otherwise noted.
Parameters
Symbol Condition
VCC Regulator
VCC Under Voltage Lockout
Threshold Rising
VCCVth
VCC Under Voltage Lockout
Threshold Hysteresis
VCCHYS
VCC Regulator
VCC Load Regulation
VCC
Icc=5mA
Power Good
Power Good Rising Threshold
Power Good Falling Threshold
Power Good Lower to High Delay
Power Good Sink Current
Capability
PGVth-Hi
PGVth-Lo
PGTd
VPG
Sink 4mA
Power Good Leakage Current
Thermal Protection(6)
IPG_LEAK VPG = 3.3V
Thermal Shutdown
Thermal Shutdown Hysteresis
TSD
Note:
6) Guaranteed by design.
7) Not production test, guaranteed by characterization
Min Typ Max Units
87%
150
3.8
500
4.8
0.5
91%
80%
2.5
10
94%
0.4
100
25
V
mV
V
%
VFB
VFB
ms
V
nA
°C
°C
MP8762H Rev. 1.11
www.MonolithicPower.com
5/3/2016
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
5

5 Page

MP8762H arduino
MP8762H 10A, 18V, SYNCHRONOUS STEP-DOWN CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN=12V, VOUT =1V, L=1µH, TA=+25°C, unless otherwise noted.
Short Circuit Protection
VOUT
1V/div.
EN
5V/div.
SW
10V/div.
IL
10A/div.
VOUT (AC)
100mV/div.
IL
5A/div.
VOUT (AC)
500mV/div.
SW
10V/div.
IL
10A/div.
Thermal Shutdown
IOUT = 0A
Thermal Recovery
IOUT = 0A
VOUT
500mV/div.
SW
10V/div.
IL
2A/div.
VOUT
500mV/div.
SW
10V/div.
IL
2A/div.
MP8762H Rev. 1.11
www.MonolithicPower.com
5/3/2016
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
11

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