Datasheet > CAT3224HV3-GT2

CAT3224HV3-GT2

更新时间： 2024-11-07 06:46:15

品牌	Logo	应用领域
安森美 - ONSEMI		驱动器闪光灯
页数	文件大小	规格书
13页	182K
描述
4 Amp Supercapacitor Flash LED Driver

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CAT3224HV3-GT2 数据手册

CAT3224

4 Amp Supercapacitor

Flash LED Driver

Description

The CAT3224 is a very high−current integrated flash LED driver

which also supports the charging function for a dual−cell

supercapacitor applications. Ideal for Li−ion battery−powered

systems, it delivers up to 4 A LED flash pulses, far beyond the peak

current capability of the battery.

http://onsemi.com

Dual−mode 1x/2x charge pump charges the stacked supercapacitor

to a nominal voltage of 5.4 V, while an active balance control circuit

ensures that both capacitor cell voltages remain matched. The nominal

charging current to be drawn from the battery is set by an external

resistor tied to the RC pin.

TQFN−16

HV3 SUFFIX

CASE 510AD

The driver also features two matched current sources. External

resistors provide the adjustment for the maximum flash mode current

(up to 4 A) and the torch mode current (up to 400 mA). A built−in

safety timer automatically terminates the flash pulse beyond a

maximum duration of 300 ms.

In addition to thermal shutdown and overvoltage protection, the

device is fully protected against external resistor programming faults

and fully supports reverse output voltage for all conditions.

The device is packaged in the tiny 16−pad TQFN 3 mm x 3 mm

package with a max height of 0.8 mm.

PIN CONNECTIONS

BAL

CAP

LEDA

LEDB

Features

• 2 Channels at 2 A Each in Flash Mode

• 2 Channels at 200 mA Each in Torch Mode

• Adjustable Charge Current Limit up to 1000 mA

• Flash/Torch Current Separate Adjustment

• Dual−mode 1x/2x Charge Pump

(Top View)

MARKING DIAGRAM

JAAT

• Dual Cell Supercapacitor Balancing

• Flash Safety Timer and Ready Flag

• Supercapacitor Continuous Charging

• Shutdown CAP Leakage 3 mA

JAAT = Specific Device Code

• “Zero” Current Shutdown Mode

• 80 mA Standby Current (I

)

VIN

ORDERING INFORMATION

• Over−voltage, Over−current Limiting

• Thermal Shutdown Protection

Device

Package

Shipping

• Small 3 mm x 3 mm, 16−pad TQFN Package

• This Device is Pb−Free, Halogen Free/BFR Free and RoHS

Compliant

CAT3224HV3−GT2 TQFN−16

(Pb−Free)

2,000/

Tape & Reel

Note: NiPdAu Plated Finish (RoHS−compliant)

Applications

• High Power LED Flash

• Systems with High Peak Loads

Semiconductor Components Industries, LLC, 2009

Publication Order Number:

December, 2009 − Rev. 0

CAT3224/D

12 3 4 5 6 7...13

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