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MP3397EF 数据表(PDF) 4 Page - Monolithic Power Systems

部件名 MP3397EF
功能描述  Step-Up, 4-String Max 350mA/String White LED Driver
PDF  16 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP3397EF 数据表(HTML) 4 Page - Monolithic Power Systems

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MP3397—4-STRING, MAX 350mA/STRING WHITE LED DRIVER
MP3397 Rev. 1.01
www.MonolithicPower.com
4
9/4/2012
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
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
5.5
6
6.5
V
Input UVLO Threshold
VIN_UVLO
Rising Edge
3.8
4.2
4.6
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
Switching Frequency
fSW
ROSC= 115kΩ
480
540
600
kHz
ROSC= 374kΩ
145
165
185
kHz
OSC Voltage
VOSC
1.20
1.23
1.26
V
Minimum On Time
tON_MIN
PWM Mode,
when no pulse skipping happens
100
ns
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
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
1.20
1.23
1.25
V
LEDX Average Current
ILED
RISET=30kΩ
31
32
33
mA
Current Matching
(5)
ILED=32mA
2.5
%



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