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MP3398A 数据表(PDF) 4 Page - Monolithic Power Systems

部件名 MP3398A
功能描述  Step up, 4 strings, Max. 350mA/string Analog and PWM dimming, White LED Controller
PDF  20 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP3398A 数据表(HTML) 4 Page - Monolithic Power Systems

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STEP UP, 4 STRINGS, MAX. 350MA/STRING ANALOG AND PWM DIMMING, WHITE LED CONTROLLER
MP3398A Rev. 1.04
www.MonolithicPower.com
4
5/26/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS (5)
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
without switching
1.2
1.35
1,5
mA
Supply Current (Operation)
IOP
VIN=12V, VEN=5V, no load
with switching
3
5.5
mA
Supply Current (Shutdown)
IST
VEN=0V, VIN=12V
0.01
0.5
μA
LDO Output Voltage
VCC
VEN=5V, 7V<VIN<28V,
0<IVCC<10mA
5.4
6
6.6
V
VCC UVLO Threshold
VIN_UVLO
Rising Edge
3.6
4
4.4
V
VCC 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
4.5
7
Ω
Gate Driver Impedance
(Sinking)
VCC=6V,IGATE=10mA
2.5
5
Ω
Switching Frequency
fSW
ROSC= 115kΩ
459
540
621
kHz
ROSC= 374kΩ
150
180
210
kHz
OSC Voltage
VOSC
1.20
1.23
1.26
V
Maximum Duty Cycle
DMAX
93
%
Cycle By Cycle ISENSE
Current Limit
Max Duty Cycle
145
180
230
mV
COMP Source Current Limit
ICOMP SOLI
1V<COMP<1.9V
70
μA
COMP Sink Current Limit
ICOMP SILI
1V<COMP<1.9V
17
μA
COMP Trans-conductance
GCOMP
ΔI
COMP=±10μA
400
μA/V
CURRENT DIMMING
PWM Input Low Threshold
VPWM_LO
VPWM Falling
0.75
V
PWM Input High Threshold
VPWM_HI
VPWM Rising
1.25
V
Analog Dimming Input Low
Threshold
Adim_L
RISET=9.72k
0.38
0.41
0.44
V
Analog Dimming Input High
Threshold
Adim_H
1.44
1.49
1.54
V
LED CURRENT REGULATION
ISET Voltage
VISET
1.195
1.22
1.245
V
LEDX Average Current
ILED
RISET=30.5kΩ
31.3
32.3
33.3
mA
Current Matching
(5)
ILED=33.2mA
2.5
%
VCC Max Current Limit
Icc_Limit
50
75
100
mA
LED FET Resistance
R_LED
ILED=10mA
1.7
Ω



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