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MP3391 Datasheet(PDF) 8 Page - Monolithic Power Systems

Part # MP3391
Description  8-Channel, 120mA/ch Step-Up WLED Driver Controller
PDF  18 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP3391 Datasheet(HTML) 8 Page - Monolithic Power Systems

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MP3391—8-CHANNEL, 120mA/CH STEP-UP WLED DRIVER CONTROLLER
MP3391 Rev. 1.11
www.MonolithicPower.com
8
3/14/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
VIN =15V, 14 LEDs in series, 8 strings parallel, 60mA/string, unless otherwise noted.
VSW
20V/div.
VOUT
20V/div.
ILED
200mA/div.
VSW
20V/div.
VOUT
20V/div.
ILED
500mA/div.
Steady State
VIN
10V/div.
Vin Startup
Ven Startup
External PWM Dimming
fPWM = 200Hz, DPWM = 50%
DC Burst Dimming
CBOSC = 2.2nF, VPWMI = 0.7V
Open LED Protection
open all LED strings at working
Short LED Protection
short VOUT to LEDx at working
Short LED Protection
short VOUT to GND at working
0.83
0.85
0.87
0.89
0.91
0.93
0.95
0.97
510
15
20
25
30
35
VIN (V)
Efficiency vs.
Input Voltage
VSW
20V/div.
VOUT
20V/div.
ILED
500mA/div.
VEN
5V/div.
VSW
20V/div.
VOUT
20V/div.
ILED
500mA/div.
VPWM
5V/div.
VSW
20V/div.
VOUT
20V/div.
ILED
500mA/div.
BOSC
500mV/div.
VSW
20V/div.
VOUT
20V/div.
ILED
500mA/div.
FF
5V/div.
VSW
20V/div.
VLED1
20V/div.
ILED
500mA/div.
FF
5V/div.
VSW
20V/div.
VOUT
20V/div.
VFAULT
10V/div.
Iinductor
10A/div.



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