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MP3388S 数据表(PDF) 3 Page - Monolithic Power Systems

部件名 MP3388S
功能描述  50V, 8-String, Step-Up, White LED Driver
PDF  15 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP3388S 数据表(HTML) 3 Page - Monolithic Power Systems

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MP3388S—50V, 8-STRING, STEP-UP, WHITE LED DRIVER
MP3388S Rev.1.01
www.MonolithicPower.com
3
10/29/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN =12V, VEN = 5V, TA = +25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
Operating Input Voltage
VIN
4.3
25
V
Supply Current (Quiescent)
IQ
VIN=12V, VEN=5V, no load.
1.8
mA
Supply Current (Shutdown)
IST
VEN=0V, VIN=12V
2
μA
LDO Output Voltage
VCC
VEN=5V, 6V<VIN<25V,
0<IVCC<10mA
4.5
5
5.5
V
Input UVLO Threshold
VIN_UVLO
Rising Edge
3.4
3.9
4.3
V
Input UVLO Hysteresis
200
mV
EN ON Threshold
VEN_ON
VEN Rising
1.5
V
EN OFF Threshold
VEN_OFF
VEN Falling
0.8
V
EN Pull-Down Resistor
REN PD
500
kΩ
EN Source Current
IEN SOURCE
VEN=5V
10
15
μA
EN Sink Current
IEN SINK
VEN=0V
1
μA
STEP-UP CONVERTER
SW ON-Resistance
RDS_ON
IDS=20mA
0.18
0.3
Ω
SW Leakage Current
ISW_LK
VSW=45V
1
μA
Switching Frequency
fSW
VOSC=VCC or Floating
1.0
1.25
1.5
MHz
VOSC=0V
500
625
750
kHz
OSC High-Level Threshold
VOSC_H
fSW=1.25MHz
2.1
V
OSC Low-Level Threshold
VOSC_L
fSW=625kHz
0.8
V
Minimum ON Time
τON_MIN
PWM Mode,
when no pulse skipping happens
100
ns
Maximum Duty Cycle
DMAX
90
93
96
%
SW Current Limit
ISW_LIMIT
Duty=90%
2.0
A
COMP Transconductance
GCOMP
ΔICOMP=±10μA
100
μA/V
COMP Output Current
ICOMP
60
μA
PWM DIMMING
PWMI HIGH Threshold
VPWMI_H
1.5
V
PWMI LOW Threshold
VPWMI_L
0.8
V
PWMO Output Impedance
RPWMO
300
400
500
kΩ
PWMI Leakage Current
IPWMI_LK
-1
+1
μA
PWMI Source Current
IPWM SOURCE
VPWMI=5V
1
μA
PWMI Sink Current
IPWM SINK
VPWMI=0V
3
6
μA
DPWM Frequency
fDPWM
CFPWM=2.2nF
1.2
1.6
2
kHz



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