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MP3387L 数据表(PDF) 4 Page - Monolithic Power Systems

部件名 MP3387L
功能描述  Step-up, 6 strings, Max.45mA/string, Combined Analog and PWM dimming, White LED Driver
PDF  14 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP3387L 数据表(HTML) 4 Page - Monolithic Power Systems

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MP3387L ― STEP UP, 6STRINGS,WHITE LED DRIVER
MP3387L Rev. 1.11
www.MonolithicPower.com
4
3/29/2016
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 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
3
26
V
Supply Current (Quiescent)
IQ
VIN=12V, VEN=5V, no load.
1.6
mA
Supply Current (Shutdown)
IST
VEN=0V, VIN=12V
1
μA
LDO Output Voltage
VCC
VEN=5V, 6V<VIN<26V,
0<IVCC<10mA
4.5
5
5.5
V
VCC UVLO Threshold
VIN_UVLO
Rising Edge
2.4
2.55
2.7
V
VCC UVLO Hysteresis
200
mV
EN ON Threshold
VEN_ON
VEN Rising
1.5
V
EN OFF Threshold
VEN_OFF
VEN Falling
0.8
V
STEP-UP CONVERTER
SW On-Resistance
RDS_ON
IDS=20mA
0.18
0.3
Ω
SW Leakage Current
ISW_LK
VSW=45V
1
μA
RREQ=49.9kΩ
0.82
1.25
1.43
MHz
Switching Frequency
FSW
RREQ=100kΩ
532
625
718
kHz
Maximum Duty Cycle
DMAX
90
93
96
%
SW Current Limit
ISW_LIMIT
Duty=90%
2
2.5
A
COMP Trans-conductance
GCOMP
ΔICOMP=±10μA
100
μA/V
CURRENT DIMMING
PWMI Input Low Threshold
VPWMI_LO
VPWM Falling
0.4
V
PWMI Input High Threshold
VPWMI_HI
VPWM Rising
1.5
V
MIX Input Low Threshold
VMIX_LO
VMIX Falling
0.4
V
MIX Input High Threshold
VMIX_HI
VMIX Rising
1.5
V
PWMI Dimming Output
Frequency
FPWMO
24k
27.5k
Hz
PWMI Dimming Input
Transfer Point
25
%
PWMI Dimming Transfer
Point Hysteresis
0.2
%
VPWMI =5V
10
15
μA
PWMI Leakage Current
IPWMI_LK
VPWMI =0V
1
uA
LED CURRENT
REGULATION
LEDX Average Current
ILED
RSET=60.4kΩ
19.4
20
20.6
mA
Current Matching
(5)
ISET=20mA
3
%
Maximum LED Current per
String
ILEDmax
45
mA



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