AP3607 查看數據表（PDF） - BCD Semiconductor

零件编号

产品描述 (功能)

生产厂家

AP3607

4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER

BCD Semiconductor 

Preliminary Datasheet

4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER

AP3606/AP3607

General Description

The AP3606 and AP3607 are step-up DC-DC

converters based on 1x/1.5x charge pump and low

dropout current sink, which helps them maintain the

highest efficiency. The AP3606 is specially designed

to drive up to 4 WLEDs in backlight display while

the AP3607 is designed for 6 WLEDs.

These devices provide up to 20mA current for each

WLED. There are totally 16 steps of current control,

which is achieved through a digital pulse dimming

function on EN pin. Additionally, 1MHz high

switching frequency enables the use of small external

capacitors. Internal soft-start circuitry prevents

excessive inrush current during start-up and mode

transition.

The supply voltage ranges of AP3606 and AP3607

are from 2.7V to 5.5V which make them ideally suit

for applications powered by Li-ion battery.

These ICs are available in the tiny package of

QFN-3×3-16.

Features

• Regulated Output Current with ±3% Matching

• Drives up to 4 WLEDs at 20mA Each (AP3606)

Drives up to 6 WLEDs at 20mA Each (AP3607)

• 16 Steps Brightness Control Using Pulse Signal

Dimming

• Wide Operating Voltage Range: 2.7V to 5.5V

• High Operating Frequency: 1MHz

• Auto 1x/1.5x Charge Pump Mode Selection

• Built-in Soft-start

• Output Over Voltage Protection

• Built-in UVLO

• Built-in OTSD

• Operating Temperature Range: -40°C to 85°C

Applications

• Mobile Phone

• PDA

• MP3/4

QFN-3×3-16

Figure 1. Package Type of AP3606/AP3607

Dec. 2008 Rev. 1. 2

BCD Semiconductor Manufacturing Limited

1

Share Link: