DC-DC LED Drivers | CAT4139

White LED Driver, High Current Boost, 22 V

Availability & Samples

Favorite

Datasheet

CAD Model

Overview

The CAT4139 is a DC/DC step-up converter that delivers an accurate constant current ideal for driving LEDs. Operation at a fixed switching frequency of 1MHz allows the device to be used with small value external ceramic capacitors and inductor. LEDs connected in series are driven with a regulated current set by the external resistor R1. The CAT4139 is ideal for driving parallel strings of up to five white LEDs in series or up to 22 V.

LED dimming can be done by using a DC voltage, a logic signal, or a pulse width modulation (PWM) signal. The shutdown input pin allows the device to be placed in power-down mode with 'zero' quiescent current.

In addition to thermal protection and overload current limiting, the device also enters a very low power operating mode during 'Open LED' fault conditions.

  • LED Drive for Parallel Strings
  • GPS Navigation Systems
  • Portable Media Players
  • Switch Current Limit 750 mA
  • Drives LED strings up to 22 V
  • Up to 87% Efficiency
  • Low Quiescent Ground Current 0.6 mA
  • 1 MHz Fixed Frequency Low noise Operation
  • Soft start “in-rush” current limiting
  • Shutdown current less than 1 µA
  • Open LED Overvoltage Protection
  • Automatic Shutdown at 1.9 V (UVLO)
  • Thermal overload protection

Material Composition

Product Change Notification

Search

Close Search

Products:

1

Expand Table

Collapse Table

Share

Export

Compare

Columns

0

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

Topology

VIN Min (V)

VIN Max (V)

VO Max (V)

IO Max (mA)

fSW Typ (kHz)

Pricing ($/Unit)

Loading...

CAT4139TD-GT3

Active

Pb

A

H

P

TSOT-23-5

419AE

1

260

REEL

3000

Y

Step-Up

2.2

5.5

24

350

1000

$0.5083

More Details

Show More

1-25 of 25

Products per page

Jump to :

Email Sales
Please provide a first name.
Please provide a last name.
Please provide a company/university name.
Please provide a valid email.
Please choose a country.
Please choose a job title.
Please provide a how could we help you.
You have to agree with the privacy policy.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Hello, your current browser settings are preventing us from processing your submission. You can adjust your browser settings and reload the page or you can submit an email directly to inside.sales@onsemi.com

You might also try the following:

  • Clear your browser cookies
  • Try to open this page in anonymous browser window
  • Try a different browser
  • Make sure you have reliable internet connection