Datasheet > AP3605_10

AP3605_10

更新时间： 2024-11-19 12:52:19

品牌	Logo	应用领域
BCDSEMI		驱动器泵
页数	文件大小	规格书
13页	702K
描述
4-Channel Charge Pump LED Driver with Current Balancing and Wide Range PWM Dimming

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AP3605_10 数据手册

Data Sheet

4-Channel Charge Pump LED Driver with Current Balancing and Wide Range PWM Dimming AP3605

General Description

Features

The AP3605 is a step-up DC/DC converter based on

1.5x charge pump current source, it is specially

designed for LED supplies in backlight display.

Regulated Output Current with ±3% Matching

Regulated ±10% Output Current Source

Drive up to 4 LEDs at 20mA Each

Wide Operating Voltage Range: 2.7V to 5.5V

High Efficiency up to 93%

High Operating Frequency: 1MHz

Built-in Soft-Start to Limit the Inrush Current

LED Brightness Control through PWM and Ana-

log Signal

The AP3605 can provide constant current up to 20mA

for each LED, which is programmed by an external

resistor, so it has a total capability to provide 80mA for

4 LEDs. The chip has a good performance of LED

current matching and allows PWM brightness dim-

ming control. Additionally, high switching frequency

up to 1MHz enables the use of two small external · PWM Dimming Frequency up to 50kHz

flying capacitors. Internal soft-start circuitry prevents

excessive inrush current during start-up.

Built-in Standby Mode to Get PWM Dimming

Duty Cycle Control Linearity

Built-in OTSD (Over Temperature Shutdown)

Function to Protect the Device from Burn Out

The AP3605 supply voltage range is from 2.7V to

5.5V, ideally suited for applications powered by the Li-

ion battery.

Applications

The AP3605 is available in a 3mmx3mm QFN-3x3-16

tiny package. Its operating temperature range is -40^oC

to 85^oC.

Mobile Phone

MP3, MP4

White LED Backlight in Mobile Phone, PDA

QFN-3x3-16

Figure 1. Package Type of AP3605

Jun. 2010 Rev. 1. 7

BCD Semiconductor Manufacturing Limited

12 3 4 5 6 7...13

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AP3606FNTR-G1	BCDSEMI	获取价格	4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER
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