Datasheet > SP6685_06

SP6685_06

更新时间： 2024-09-21 04:03:23

品牌	Logo	应用领域
西伯斯 - SIPEX		驱动器泵
页数	文件大小	规格书
16页	279K
描述
700mA Buck/Boost Charge Pump LED Driver

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中文翻译

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数据手册

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SP6685_06 数据手册

SP6685

700mA Buck/Boost Charge Pump LED Driver

FEATURES

■ Output Current up to 700mA

OUT

GND

■ Up to 94% Efficiency in Torch Mode

■ Adjustable FLASH Mode Current

■ Minimum External Components: No Inductors

■ Automatic Buck/Boost Mode Switchover

■ Wide V_INRange: 2.7V to 5.5V

SP6685

10 Pin DFN

FLASH

SET

■ High Frequency Operation: 2.4 MHz

■ Low 50mV Reference for low Loss Sensing

■ I_Q< 1μA in Shutdown

Now Available in Lead Free Packaging

APPLICATIONS

■ White LED Torch/Flash for Cell

■ PWM Dimming Control

■ Automatic Soft Start Limits Inrush Current

■ Overvoltage Protection on Output

■ Overcurrent/Temperature Protection

■ Low Ripple and EMI

Phones, DSCs, and Camcorders

■ White LED Backlighting

■ Generic Lighting/Flash/Strobe

Applications

■ General Purpose High Current Boost

■ Ultra-low Dropout Voltage in Buck Mode

■ Space Saving 10-pin 3mm x 3mm DFN Package

DESCRIPTION

The SP6685 is a current-regulated charge pump ideal for powering high brightness LEDs for

camera flash applications. The charge pump can be set to regulate two current levels for

FLASH and TORCH modes. The SP6685 automatically switches modes between step-up

and step-down ensuring that LED current does not depend on the forward voltage. A low

current sense reference voltage (50mV) allows the use of small 0603 current sensing

resistors. The SP6685 is offered in the 10-pin DFN package.

TYPICAL APPLICATION CIRCUIT

(2.7 - 5.5V)

OUT

1μF

4.7μF

GND

SP6685

1μF

WLED

GND

FLASH

TORCH/FLASH

ENABLE

SET

88KΩ

0.22Ω

SENSE

Date: 7/6/06 Rev B

SP6685, 700mA Buck/BoostCharge Pump LED Driver

12 3 4 5 6 7...16

中文翻译

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