CAT4139TD-GT3 LED Drivers by ON Semiconductor

White LED Driver, High Current Boost, 22 V

Status: Active
Series: CAT4139
RoHS: Compliant
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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.
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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
LED Drive for Parallel Strings
Portable Media Players
End Products
GPS Navigation Systems


Description CAT4139
Compliance Pb-free Halide free
Topology Step-Up
VIN Min (V) 2.2
VIN Max (V) 5.5
VO Max (V) 24
IO Max (mA) 350
fSW Typ (kHz) 1000
Package Type TSOT-23-5

Alternative Descriptions

LED DRVR 27Segment 5-Pin TSOT-23 T/R | Avnet Europe
High Current Boost W hite | Mouser Electronics
CAT4139 Series 20 mA 5.5 V 1.3 MHz High Current Boost White LED Driver TSOT-23-5 | Future Electronics
DRIVER, LED, 0.75A, 1MHZ, 22V, 5TSOT23 | Farnell
White Led Driver, Boost, Tsot-23-5 | Newark Electronics

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Frequently Asked Questions

Where can I find additional details, specifications and documents for a CAT4139TD-GT3?

Additional datasheets, footprints and schematics for CAT4139TD-GT3 are listed on our Part Details page. You can also find images and similar parts to CAT4139TD-GT3 on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for CAT4139TD-GT3 on our Product Comparison page. Access via the 'View Pricing & Stock' button to view CAT4139TD-GT3 price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does CAT4139TD-GT3 fall under?

The CAT4139TD-GT3 is listed under Power Management > LED Drivers > DC-DC LED Drivers.

Can I view similar or alternative parts?

You can view similar parts to CAT4139TD-GT3 when available in the DC-DC LED Drivers range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the CAT4139TD-GT3 you can contact the distributor directly for product support, shipping queries etc.

Is the CAT4139TD-GT3 RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

Which authorised distributors for CAT4139TD-GT3 have stock available?

Authorised distributors including Avnet Europe, Avnet Asia, Avnet America, Mouser Electronics and Arrow Electronics have stock available or on a lead time for CAT4139TD-GT3.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for CAT4139TD-GT3 often in real-time on the comparison pages.

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