Datasheet > SC615A_08

SC615A_08

更新时间： 2024-09-17 06:10:15

品牌	Logo	应用领域
商升特 - SEMTECH		驱动器闪光灯泵
页数	文件大小	规格书
12页	221K
描述
Charge Pump Flash LED Driver

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SC615A_08 数据手册

SC615A

Charge Pump Flash

LED Driver

POWER MANAGEMENT

Description

Features

The SC615A is a high-current charge pump designed Two Selectable Modes - Flash and Spotlight

Up to 700mA Output - Flash Mode

Up to 280mA Output - Spotlight Mode

500mA Over Temperature Range and Voltage Range

- Flash Mode

Spotlight mode set to 40% of Flash Current

3.0V to 5.25V Input Range

External Flash Control Pin for Synchronization to a

Camera Module or Graphics Controller

Short Circuit, Over-Voltage, and Over-Temperature

Protection

speciﬁcally for use with white LEDs used in camera

ﬂash applications. Only two small bucket capacitors are

required to develop the output drive, providing a low EMI

solution compared to inductive boost regulators.

The SC615A has two modes of operation: Flash mode and

Spotlight mode. In Flash mode, the SC615A is capable

of delivering 500mA of regulated current for a duration

of 500ms or up to 700mA for a reduced duration. In

Spotlight mode the SC615A outputs 40% of the Flash

mode current and can remain enabled continuously.

Soft-Start Functionality

Two Control Inputs for Maximum Versatility

Shutdown Current < 2μA

Micro Lead Package MLPD-10, 3mm x 3mm

An external resistor is connected in series with the LED to

set the current. In Flash mode, this resistor can dissipate

up to 175mW, reducing the power dissipation requirement

of the SC615A. The ﬂash input (FLASH) overrides the

control input (CTRL) to make sure the ﬂash function is

activated when called for.

Applications

Mobile Camera Phones

Digital Cameras

PDAs with Built-in Cameras

The thermally efﬁcient MLPD-10 package and ceramic

bypass and bucket capacitors make the SC615A a high

output current driver that requires minimal PCB area.

Typical Application Circuit

SC615A

VIN

C1+

C1-

C2+

C2-

VOUT

3.0V to

5.25V

10μF

1μF

white LED

GND

ISET

1μF

CTRL

FLASH

0.5Ω

FLASH

CTRL

March 5, 2008

www.semtech.com

12 3 4 5 6 7...12

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