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MP8715DN 数据表(PDF) 3 Page - Monolithic Power Systems

部件名 MP8715DN
功能描述  100% Duty Cycle Synchronous 4A, 21V, 500kHz Step-Down Converter
PDF  19 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP8715DN 数据表(HTML) 3 Page - Monolithic Power Systems

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MP8715 – 4A, 21V, 500kHz, STEP DOWN CONVERTER WITH 100% DUTY CYCLE OPERATION
MP8715 Rev. 1.01
www.MonolithicPower.com
3
6/13/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameters
Symbol Condition
Min
Typ
Max
Units
Supply Current (Quiescent)
Iq
VEN = 2V, VFB = 1V
0.66
mA
Shutdown Current
IIN
VEN = 0V
1
µA
IN Undervoltage Lockout
Threshold
INUVVth Rising Edge
3.8
4.0
4.2
V
IN Undervoltage Lockout
Hysteresis
INUVHYS
880
mV
VCC Regulator
VCC
5.1
V
VCC Load Regulation
ICC=5mA
5
%
Regulated FB Voltage
VFB
TA = +25°C
0.789
0.805
0.821
V
FB Input Current
IFB
VFB = 0.85V
±50
nA
EN Rising Threshold
VEN_RISING TA = +25°C
1.05
1.6
EN
Threshold Hysteresis
VEN_HYS
350
mV
VEN=2V
2
µA
EN Input Current
IEN
VEN=0V
0
µA
EN Turn Off Delay
ENTd-Off
5
µs
Soft-start current
ISS
VSS=0
5
µA
High-Side Switch On-Resistance
HSRDS-ON
120
mΩ
Low-Side Switch On-Resistance
LSRDS-ON
50
mΩ
SW Leakage Current
SWLKG
VEN = 0V, VSW = 0V or 12V
0
1
µA
BST Under Voltage Lockout Threshold
BSTUVVth
2.8
V
High-Side Switch Current Limit
(5)
HSILIMIT Sourcing
5
7
A
Low-Side Switch Current Limit
LSILIMIT
Sinking
2
A
Oscillator Frequency
fSW
400
500
600
kHz
Fold-back frequency
fFB
0.25
fSW
Minimum On Time
TON-Min
70
ns
Maximum Duty Cycle
DMax
100
%
Sync Frequency Range
fSYNC
0.3
2
MHz



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