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CAT3224 - 4 Amp Supercapacitor Flash LED Driver

General Description

The CAT3224 is a very high current integrated flash LED driver which also supports the charging function for a dual

cell supercapacitor applications.

ion battery powered systems, it delivers up to 4 A LED flash pulses, far beyond the peak current capabili

Key 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 ti.

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Datasheet Details

Part number CAT3224
Manufacturer onsemi
File Size 262.09 KB
Description 4 Amp Supercapacitor Flash LED Driver
Datasheet download datasheet CAT3224 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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CAT3224 LED Driver, Charge Pump, 2-Channel 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. 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. The driver also features two matched current sources.