CAT3224: LED Driver, Charge Pump, 2-Channel

Datasheet: LED Driver, Charge Pump, 2-Channel
Rev. 0 (186.0kB)
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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 4.0 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. External resistors provide the adjustment for the maximum flash mode current (up to 4.0 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.
Features
 
  • 2 channels at 2.0 A each in Flash mode
  • 2 channels at 200 mA each in Torch mode
  • Adjustable charge current limit, up to 1000 mA
  • Dual-mode 1x/2x charge pump
  • Dual-cell supercapacitor balancing
  • Zero current shutdown mode
Technical Documentation & Design Resources
Data Sheets (1) FAQ (4)
Package Drawings (1)  
Availability & Samples
Specifications
Case Outlines
Application Diagram
Interactive Block Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
CAT3224HV3-GT2 Active
Pb-free
Halide free
CAT3224 TQFN-16 510AD 1 260 Tape and Reel 2000 $1.2946
Market Leadtime (weeks) : 8 to 12
PandS   (2020-09-14 00:00) : >1K

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
VIN Min (V)
VIN Max (V)
VO Max (V)
IO Max (mA)
fSW Typ (kHz)
Package Type
CAT3224HV3-GT2  
 $1.2946 
Pb
H
 Active   
Charge Pump
2.5
5.5
5.5
4000
800
TQFN-16
Case Outlines
510AD   
Packages
CAT3224: LED Driver, Charge Pump, 2-Channel
CAT3224: LED Driver, Charge Pump, 2-Channel
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