LED Driver, Charge Pump, 3-Ch

Obsolete

Overview

The CAT3603 is a charge pump LED driver operating in either 1x (LDO) mode or 1.5x fractional mode regulating current through each of the 3 LED pins. Operation at a constant switching frequency of 1MHz allows the use of very small value ceramic capacitors.

The CAT3603 drives 3 white LEDs in parallel and provides tightly matched regulated current to achieve uniform brightness in LCD backlighting applications. An external resistor, RSET, controls the output current level. The device can deliver up to 30mA over an input voltage supply range from 3V to 5.5V, making it ideal for battery-powered applications.

LED dimming can be accomplished using several methods; using a DC voltage to set the RSET pin current, applying a PWM signal on the EN pin, or adding a switched resistor in parallel with RSET. The EN input pin allows the device to be placed in powerdown mode with 'near-zero' quiescent current.

The device is available in the tiny 12-lead thin DFN 3mm x 3mm package with a max height of 0.8mm.

  • LCD Display Backlight
  • Cellular Phones
  • Digital Still Cameras
  • Handheld Devices

  • Drives up to 3 LEDs
  • Current setting resistor
  • Compatible with supply voltage of 3V to 5.5V
  • Power efficiency up to 91%
  • Output Current up to 30mA per LED
  • Fractional pump 1x/1.5x
  • Low noise input ripple
  • Fixed High Frequency Operation 1MHz
  • “Zero” Current Shutdown Mode
  • Soft start and current limiting
  • Short circuit protection
  • 12-lead TDFN 3mm x 3mm package

Product Resources

Product services, tools and other useful resources related to CAT3603

Product List

If you wish to buy products or product samples, please log in to your onsemi account.

Search

Close Search

Products:

1

Share

Product Groups:

Orderable Parts:

1

Product

Status

CAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

VI Max (V)

IO Max (mA)

LEDs in Series, Max #

LEDs in Parallel, Max #

Reference Price

CAT3603HV2-T2

Loading...

Obsolete

CAD Model

Pb

A

H

P

TDFN-12

1

260

REEL

2000

N

5.5

90

3

Price N/A

More Details

Show More

1-25 of 25

Products per page

Jump to :

Product Support

If you're interested to learn about this onsemi product, contact sales by filling out the form below.