CAT32TDI-GT3 LED Drivers by ON Semiconductor

White LED Driver


The CAT32 is a DC/DC step up converter that delivers a regulated output current. Operation at a constant switching frequency of 1.2MHz allows the device to be used with very small value external inductor and ceramic capacitors. The CAT32 is targeted to drive multiple white light-emitting diodes (LEDs) connected in series and provides the necessary regulated current to control the brightness and the color purity. An external resistor RSET controls the output current level. LED currents of up to 40mA can be supported over a wide range of input supply voltages from 2V to 7V, making the device ideal for battery-powered applications. A high voltage output stage allows up to 4 White LEDs to be driven in series. Series drive provides inherent current matching. 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 'near zero' quiescent current. In addition to overcurrent limiting protection, the device also includes detection circuitry to ensure protection against open-circuit load fault conditions. The device is available in a low profile (1mm max height) 6-lead TSOT-23 package.

Where to Buy

Prices starting from US$0.62

Distributor Stock
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element14
from US$0.62
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in stock
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Farnell
from US$0.89
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Newark Electronics
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Features

Low quiescent ground current (0.5 mA typical)
Power efficiency over 80%
Compatible pinout with LT1932
Adjustable output current (up to 40 mA)
High frequency 1.2 MHz operation
Input voltage operation down to 2.0 V
Low resistance (0.5Ω) high voltage power switch
Drives up to 4 White LEDs in series
Shutdown current less than 1µA
Load fault protection against open-circuits
Low value external components
Applications
Color LCD and keypad backlighting
Portable MP3 Players
End Products
Mobile Phones
Digital Cameras

Specifications

Description CAT32
Compliance Pb-free Halide free
Topology Step-Up
VIN Min (V) 2
VIN Max (V) 5.5
VO Max (V) 20
IO Max (mA) 25
fSW Typ (kHz) 1200
Package Type TSOT-23-6

Last 6 months Inventory & Pricing History


Alternative Descriptions

LED DRIVER, BOOST, 1.2MHZ, TSOT-23 | element14
White Led Driver, Step-Up, Tsot23-6 | Newark Electronics


Frequently Asked Questions

Where can I find additional details, specifications and documents for a CAT32TDI-GT3?

Additional datasheets, footprints and schematics for CAT32TDI-GT3 are listed on our Part Details page. You can also find images and similar parts to CAT32TDI-GT3 on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for CAT32TDI-GT3 on our Product Comparison page. Access via the 'View Pricing & Stock' button to view CAT32TDI-GT3 price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does CAT32TDI-GT3 fall under?

The CAT32TDI-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 CAT32TDI-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 CAT32TDI-GT3 you can contact the distributor directly for product support, shipping queries etc.

Is the CAT32TDI-GT3 RoHS compliant?

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

Which authorised distributors for CAT32TDI-GT3 have stock available?

Authorised distributors including element14, Farnell and Newark Electronics have stock available or on a lead time for CAT32TDI-GT3.

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

Stock availability and lead times will be displayed for CAT32TDI-GT3 often in real-time on the comparison pages.

What if I can't find stock of CAT32TDI-GT3?

You can fill out our help required form which you can use to request a quote for CAT32TDI-GT3 from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.