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MP3394 数据表(PDF) 7 Page - Monolithic Power Systems

部件名 MP3394
功能描述  Step-up, 4-String Max 200mA/String White LED Driver
PDF  17 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP3394 数据表(HTML) 7 Page - Monolithic Power Systems

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MP3394—4-STRING, MAX 200mA/STRING WHITE LED DRIVER
MP3394 Rev. 1.07
www.MonolithicPower.com
7
3/21/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
VIN =12V, 12 LEDs in series, 4 strings parallel, 120mA/string, unless otherwise noted.
VSW
20V/div.
VOUT
20V/div.
ILED
500mA/div.
Steady State
VSW
20V/div.
VOUT
20V/div.
VIN
10V/div.
ILED
500mA/div.
Vin Startup
VSW
20V/div.
VOUT
20V/div.
VEN
5V/div.
ILED
500mA/div.
Ven Startup
VSW
20V/div.
VBOSC
500mV/div.
VOUT
20V/div.
ILED
500mA/div.
DC Burst Dimming
VPWM = 0.1V, CBOSC = 1.8nF
VSW
20V/div.
VOUT
20V/div.
VPWM
5V/div.
ILED
500mA/div.
External PWM Dimming
fPWM = 2kHz, DPWM = 50%
VSW
20V/div.
VOUT
20V/div.
VIN
10V/div.
ILED
500mA/div.
Open LED Protection
Open all LED strings at working
VSW
20V/div.
VOUT
20V/div.
VIN
10V/div.
ILED
500mA/div.
Open LED Protection
Open one LED string at working
VSW
20V/div.
VOUT
20V/div.
VLED1
20V/div.
ILED
500mA/div.
Short LED Protection
Short VOUT to LEDx at working
Efficiency vs. Vin
0.8
0.825
0.85
0.875
0.9
0.925
0.95
0.975
1
510
15
20
25
30
INPUT VOLTAGE (V)



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