AK7864A

更新时间： 2024-02-10 11:42:59

品牌	Logo	应用领域
AKM		驱动器泵
页数	文件大小	规格书
13页	294K
描述
3 channel LED driver with Charge Pump

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AK7864A 数据手册

[AK7864A]

AK7864A

3 channel LED driver with Charge Pump

Device Outline

This product includes the charge pump power supply and the 3 channel LED driver who drives the

LED of the anode common in the constant current. The current to pass for each channel can be

adjusted by the external resistance and the register setting. Also, it has the control pins which turn

on or off the current. It is the suitable for the LED drive for the CIS sensor.

Features

■ Operating Voltage

3.3V±5%

■ Operating Temperature Range

■ LED Driver Current

0 ~ 70 C

RED: 66mA

GREEN: 66mA

BLUE: 66mA

The LED current is adjustable from 22mA to 66mA by the

external resistor. In addition, the LED current can be

reduced to 100%~12.5% by the register.

Allowable maximum Vf of the LED is 4.8V. The 1/16 watt

type is usable to external resistor.



3 chnnel independently ON/OFF

(50% setting is an upper bound when 3ch becoming

turning on at the same time)



Current setting in eight steps

When the external resistance value becomes the

assumption outside, a internal protection circuit restricts the

LED current equal to or less than 150mA (-30%~+45%)

±9.1%（by ideal resistance）

■ Current Accuracy

■ LED Current Rise / Fall iime

■ Charge Pump Pressor Circuit

■ Package

10s (typ.) (10% ~ 90%)

Generate the necessary voltage for the LED （Vf max 4.8V）

16pin QFN 3mm3mm, 0.75mm thickness with radiation

TAB in solderside

■ Power Supply

■ Application

VDD 3.135 ~ 3.465V

A light source driver for CIS module of MFP

MS1336 - E - 00

2012/01

12 3 4 5 6 7...13

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