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MP3312 데이터시트(PDF) 3 Page - Monolithic Power Systems

부품명 MP3312
상세설명  2.7V-5.5V Input , 38V OVP, Dual-Channel White LED Driver
PDF  15 Pages
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제조업체  MPS [Monolithic Power Systems]
홈페이지  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP3312 데이터시트(HTML) 3 Page - Monolithic Power Systems

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MP3312 － 2.7V-5.5V INPUT, 38V OVP, DUAL-CHANNEL WHITE LED DRIVER
MP3312 Rev. 1.02
www.MonolithicPower.com
3
1/13/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN =3.7V, VEN = VPWM= HIGH, Typical Values are at TA = 25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Unit
Power Supply
Operating Input Voltage
VIN
2.7
5.5
V
Supply Current (Quiescent)
IQ
VIN=3.7V, VEN= VPWM= High,
no load with switching
1
2
mA
Supply Current (Shutdown)
IST
VEN=0V, VIN=3.7V
1
μA
Input UVLO Threshold
VIN_UVLO
Rising Edge
2.4
2.6
V
Input UVLO Hysteresis
200
mV
OSCILLATOR
Switching Frequency
fSW
1
1.2
1.4
MHz
Maximum Duty Cycle
DMAX
93
95
%
Minimum On Time
(5)
TON_MIN
100
ns
Power Switch
Main Switch On-Resistance
RDSON_M
VIN=3.7V
0.2
Ω
Error Amplifier
Error Amplifier Transconductance
gm
370
uS
Max Sink/Source Current
42
μA
Current Regulation
VLEDx Regulation Voltage
VREG
ILED1=ILED2=20mA
240
mV
ISET Pin Voltage
VISET
1.207
1.232
1.247
V
Current Multiplier
KISET
1020
Current Accuracy
IISET =20uA,
(|IMIN-IISET|/IISET,|IMAX-IISET|/
IISET)
-2
2
%
Current Matching
IISET =20uA,
(IMAX –IMIN) /IAVG
1
2
%
Current Sink Max Output Current
30
mA
EN & PWM Logic
PWM Input High Threshold
VPWM_HI
VPWM Falling
1.2
V
PWM Input Low Threshold
VPWM_LO
VPWM Rising
0.4
V
EN High Voltage
VEN_HIGH
VEN Rising
1.2
V
EN Low Voltage
VEN_LOW
VEN Falling
0.4
V
EN & PWM Pull Down Resistor
RPD
800
kΩ
EN Low Logic
To Shutdown Time
TSD_EN
EN High to Low
2.5
ms
PWM Low Logic
To Shutdown Time
TSD_PWM
PWM High to Low
20
ms
Minimum PWM On Time
TPO_MIN
200
ns



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