MP3302
1.3A Fixed Frequency
White LED Driver
MPS CONFIDENTIAL AND PROPRIETARY INFORMATION – HUAWEI USE ONLY
The Future of Analog IC Technology
DESCRIPTION
The MP3302 is a step-up converter designed for driving up to 27 white LEDs, 3 WLEDs in ries 9
FEATURES
• Internal Power MOSFET
ELECTRICAL CHARACTERISTICS (continued) = V = 5V, T = +25°C, unless otherwi noted.
V
TYPICAL PERFORMANCE CHARACTERISTICS
V IN = 5V, 3WLEDs 9Strings, unless otherwi noted.
SWplagiarism
10V/div.
EN 2V/div.
OUT 5V/div.
EN
2V/div.
EN
5V/div.
OUT
5V/div.
LED
100mA/div.
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SW
10V/div.
LED 100mA/div.
SW
10V/div.
PWM Dimming
SW
20V/div.
OUTpasta是什么意思
20V/div.
Start Up into Openload
老爸老妈浪漫史FB
50mV/div.
OUTkds是什么
AC Coupled
100mV/div.
inductor
500mA/div.
400ns/div.
Steady State Operation
IN
V IN = 5V, 3 WLEDs,9 Strings
2016年12月17日
V IN = 5V
tsz
f=1kHz
V IN=5V, 3 WLEDs, 9 Strings小春日语
00.20.40.81
PWM DIMMING DUTY
Output Current vs
PWM Dimming Duty
200
EN PIN VOLTAGE (V)
Output Current vs
Efficiency vs
Input Voltage
OPERATIONaone
The MP3302 us a constant frequency, peak current mode boost regulator architecture to regulate the ries string of white LEDs. The operation of the MP3302 can be understood by
The voltage at the output of the error amplifier is an amplified version of the difference between the 195mV reference voltage and the feedback voltage. In this way the peak current
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