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MP3305DD Datasheet(PDF) 5 Page - Monolithic Power Systems

Part # MP3305DD
Description  36V, 1.3A, Step-up White LED Driver with High Frequency True PWM Dimming & Adjust OVP
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP3305DD Datasheet(HTML) 5 Page - Monolithic Power Systems

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MP3305 –36V, 1.3A, STEP-UP WHITE LED DRIVER WITH HIGH FREQUENCY TRUE PWM DIMMING & ADJUST OVP
MP3305 Rev. 1.0
www.MonolithicPower.com
5
4/10/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 5V, ILED = 200mA, 3WLEDs 10Strings, unless otherwise noted.
Open Load Protection
PWM Dimming
fPWM=50kHz, DPWM=50%
Steady State Operation
Enable Startup
Enable Shutdown
IINDUCTOR
500mA/div
FB
50mV/div
VOUT (AC)
100mV/div
SW
5V/div
ILED
200mA/div
EN
5V/div
VOUT
5V/div
SW
10V/div
ILED
100mA/div
VOUT
5V/div
SW
10V/div
ILED
100mA/div
EN
5V/div
VOUT
5V/div
SW
10V/div
ILED
200mA/div
PWM
2V/div
VOUT
10V/div
SW
10V/div
400ns/div
VIN vs. Efficiency
50
60
70
80
90
100
3 3.5
4 4.5
5 5.5
6 6.5
VIN (V)
PWM Dimming Duty vs.
WLED Current
0
20
40
60
80
100
120
140
160
180
200
020
40
60
80
100
PWM DIMMING DUTY (%)
50kHz
20kHz
250Hz
1kHz


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