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CAT4134: LED Driver, Dual Channel Movie / Flash, 500 mA

Datasheet: LED Driver, Dual Channel Movie / Flash, 500 mA
Rev. 2 (229.0kB)
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»Product Change Notification (2)
Product Overview
Product Description
The CAT4134 is a high power, dual channel boost converter which provides two matched LED currents. Output current levels are controlled by one of two resistors RSET or RFLASH. When the FLASH input pin is low (movie mode), RSET sets the current. When FLASH is high (flash mode), the resistor RFLASH sets the LED current. Each channel drives two or three white LEDs in series and provides a regulated current to control their brightness. Input supply down to 3V is supported, making the device ideal for Li-Ion battery applications.

High frequency low noise operation allows the device to be used with small external inductors and ceramic capacitors while still maintaining excellent efficiency. When not in use the device can be placed into a 'zero' quiescent mode via the shutdown pin.

In addition to soft-start control and current limiting, the CAT4134 include thermal shutdown protection. A dedicated overvoltage pin (OVP) allows the user to limit the maximum LED supply voltage.
Features
 
  • Dual Mode (Movie or Flash) operation
  • Independent Movie/Flash LED current control
  • Can drive 2, 3, 4 or 6 LEDs
  • High LED Current (250 mA max per channel)
  • Power efficiency up to 85%
  • Dual frequency mode 1.2 MHz and 900 kHz
  • Soft-start inrush current
  • Adjustable overvoltage protection
  • Thermal shutdown protection
  • Operating temperature range -40ºC to +85ºC
Applications   End Products
  • Camera Flash
  • Color LCD Backlighting
 
  • Digital Still Cameras
  • Flash Lights
Technical Documentation & Design Resources
Data Sheets (1) Evaluation Board Documents (4)
Package Drawings (1)  
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
CAT4134AEVB Active
CMOS Regulated Current Boost Converter Evaluation Board
Avnet (2015-07-09) : 2
Availability and Samples
Product
Status
Compliance
Description
Package
MSL*
Container
Budgetary Price/Unit
Type
Case Outline
Type
Qty.
CAT4134HV2-GT2 Last Shipments
Pb-free
Halide free
LED Driver, Dual Channel Movie / Flash, 500 mA TDFN-12 511AN 1 Tape and Reel 2000  
Moisture Sensitivity level (MSL) for surface mount devices (lead free measured at 260°C reflow, non lead free at 235°C reflow)
Market Leadtime (weeks) : Contact Factory
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