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MP3399 Datasheet(PDF) 4 Page - Monolithic Power Systems

No. de pieza MP3399
Descripción Electrónicos  12-String, Cascading White LED Driver For Extending LED Channels
PDF  19 Pages
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Fabricante Electrónico  MPS [Monolithic Power Systems]
Página de inicio  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP3399 Datasheet(HTML) 4 Page - Monolithic Power Systems

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MP3399-12-STRING, CASCADING WHITE LED DRIVER WITH STEP-UP CONTROLLER
MP3399 Rev. 1.0
www.MonolithicPower.com
4
3/27/2013
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
4.5
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
3.4
3.9
4.3
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
GATE Voltage
VGATE
6
V
ROSC= 115kΩ
510
570
630
kHz
Switching Frequency
fSW
ROSC= 374kΩ
150
170
190
kHz
OSC Voltage
VOSC
1.18
1.23
1.28
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
175
220
265
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
1.2
1.6
2
kHz
BOSC Output Current
IBOSC
6.37
7.5
8.63
uA
LED CURRENT REGULATION
ISET Voltage
VISET
1.20
1.22
1.245
V
LEDX Average Current
ILED
RISET=40kΩ
29.6
30.5
31.4
mA
Current Matching
(5)
ILED=30.5mA
2.5
%



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