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CAT3604A: White LED Driver, 4-Channel, Regulated Charge Pump

Datasheet: 4-Channel Regulated Charge Pump White LED Driver
Rev. 0 (223.0kB)
Product Overview
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The CAT3604A is a charge pump operating in either 1x (LDO) mode or 1.5x fractional mode regulating current through each of the 4 LED pins. Operation at a fixed high frequency of 1 MHz typical allows the use of very small value ceramic capacitors.

The CAT3604A drives white light-emitting diodes (LEDs) connected in parallel and provides tightly matched regulated current to achieve uniformity of brightness in LCD backlighting applications. An external resistor RSET controls the output current level. LED currents of up to 30 mA are supported over a range of input supply voltages from 3 V to 5.5 V, making the device ideal for battery-powered applications.

LED dimming can be accomplished by several methods including using a DC voltage to set the RSET pin current, applying a PWM signal on the Control signals, or adding a switched resistor in parallel with RSET. The Enable input pin allows the device to be placed in power-down mode with ''zero'' quiescent current.

The CAT3604A features short circuit and overcurrent limiting protection. The device is available in a 16-pad TQFN package with a max height of 0.8 mm.
Features
 
  • Drives Individually up to 4 LEDs
  • Output Current up to 30 mA per LED
  • Compatible with Supply Voltage of 3 V to 5.5 V
  • Power Efficiency up to 93%
  • 2 Modes of Operation 1x and 1.5x
  • LED On/Off by Control Lines
  • High-frequency Operation at 1 MHz
  • Low Value Ceramic Capacitors
  • 604 Compatible Pinout
  • Soft Start and Current Limiting
Applications   End Products
  • Color LCD and Keypad Backlighting
 
  • Mobile Phones
  • Digital Cameras
  • Portable MP3 Players
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (1)
Availability & Samples
Specifications
Case Outlines
Application Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
CAT3604AHV4-T2 Active
Pb-free
Halide free
CAT3604A TQFN-16 510AE 1 260 Tape and Reel 2000 $0.8
Market Leadtime (weeks) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
VIN Min (V)
VIN Max (V)
VO Max (V)
IO Max (mA)
fSW Typ (kHz)
Package Type
CAT3604AHV4-T2  
 $0.8 
Pb
H
 Active   
Charge Pump
3
5.5
6
30
1000
TQFN-16
Case Outlines
510AE   
Packages
CAT3604A: White LED Driver, 4-Channel, Regulated Charge Pump
CAT3604A: White LED Driver, 4-Channel, Regulated Charge Pump
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