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MP3394S 数据表(PDF) 3 Page - Monolithic Power Systems

部件名 MP3394S
功能描述  Step-Up, 4-String Max 200mA/String White LED Driver
PDF  17 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP3394S 数据表(HTML) 3 Page - Monolithic Power Systems

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MP3394S—4-STRING, MAX 200mA/STRING WHITE LED DRIVER
MP3394S Rev. 1.03
www.MonolithicPower.com
3
3/21/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 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
5
28
V
Supply Current (Quiescent)
IQ
VIN=12V, VEN=5V, no load with
switching
4
mA
Supply Current (Shutdown)
IST
VEN=0V, VIN=12V
2
μA
LDO Output Voltage
VCC
VEN=5V,
7V<VIN<28V,
0<IVCC<10mA
5.2
5.8
6.4
V
Input UVLO Threshold
VIN_UVLO
Rising Edge
3.5
3.9
4.4
V
Input UVLO Hysteresis
200
mV
EN High Voltage
VEN_HIGH
VEN Rising
1.8
V
EN Low Voltage
VEN_LOW
VEN Falling
0.6
V
STEP-UP CONVERTER
Gate Driver Impedance
(Sourcing)
VCC=6V,VGATE=6V
4
Ω
Gate Driver Impedance
(Sinking)
VCC=6V,IGATE=10mA
2
Ω
ROSC= 115kΩ
470
570
670
kHz
Switching Frequency
fSW
ROSC= 374kΩ
140
175
210
kHz
OSC Voltage
VOSC
1.17
1.22
1.26
V
Maximum Duty Cycle
DMAX
90
%
ISENSE Limit
Max Duty Cycle
150
200
250
mV
COMP Source Current Limit
ICOMP SOLI
65
μA
COMP Sink Current Limit
ICOMP SILI
15
μA
COMP Trans-conductance
GCOMP
ΔICOMP=±10uA
400
μA/V
PWM DIMMING
DBRT Leakage Current
IDBRT_LK
-5
5
μA
BOSC Frequency
fBOSC
CBOSC=2.2nF
1.0
1.5
2
kHz
BOSC Output Current
IBOSC
6
7.5
9
μA
LED CURRENT REGULATION
ISET Voltage
VISET
1.17
1.22
1.26
V
LEDX Average Current
ILED
RISET=30kΩ
31
32
33
mA
Current Matching
(5)
ILED=32mA
2.5
%



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