CAT4238TD-GT3 - 

LED Driver, Boost (Step Up), 2-5.5V input, 1 Output, 1 MHz switch-freq., 38V/450 mA out, TSOT-23-5

CAT4238TD-GT3 - LED Driver, Boost (Step Up), 2-5.5V input, 1 Output, 1 MHz switch-freq., 38V/450 mA out, TSOT-23-5

Image is for illustrative purposes only. Please refer to product description.

Manufacturer Part No:
Order Code:
Technical Datasheet:
See all Technical Docs

Product Information

Boost (Step Up)
Cut Tape
Find similar products Choose and modify the attributes above to find similar products.

Product Overview

The CAT4238TD-GT3 is a DC/DC Step-up Converter 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. LED currents up to 40mA can be supported over a wide range of input supply voltages up to 5.5V, making the device ideal for battery-powered applications. The CAT4238 high-voltage output stage is perfect for driving mid-size and large panel displays containing up to ten white LEDs in series. 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.
  • Drives high voltage LED strings (38V)
  • Up to 87% efficiency
  • Low quiescent ground current of 0.6mA
  • Adjustable output current
  • 1MHz Fixed frequency low noise operation
  • Soft start in-rush current limiting
  • Shutdown current less than 1µA
  • Open LED overvoltage protection
  • Automatic shutdown at 1.9V (UVLO)
  • Thermal overload protection


Sensing & Instrumentation, Consumer Electronics, Portable Devices


Compare Selected
Manufacturer Part Number
Order Code
Manufacturer / Description
Price For
1,900 in stock

Each (Supplied on Cut Tape)

1+ £0.91 25+ £0.771 50+ £0.682 100+ £0.592 more…

Associated Products

Compare Selected

Related Searches


Awaiting Delivery

Available for backorder to lead times shown

Check stock and lead times

3,000 will be available for delivery on 05-May-2018

More stock available week commencing 13/08/18

Contact me when back in stock

Alternatives Available

2100367 - IC, LED DRIVER, BOOST, TSOT-23-5

£0.822 £ 0.82
Price for:
Each (Supplied on Cut Tape)
Multiple: 1 Minimum: 1
Quantity Price
1 + £0.822
25 + £0.72
50 + £0.639
100 + £0.558
250 + £0.525
500 + £0.492
1000 + £0.386
2500 + £0.355
No longer stocked:: No Longer Manufactured::
Back Order
Total Price:
Total Price: ( )
Total Price: --

Customer Reviews


Like to see information about this product from other customers?

 Read discussions, blogs, documents from our community members.


Select document type(s) you want to see and click “Apply Filters” button
Post a question to one of our experts or start a discussion and get responses from supplier experts and fellow engineers in our community.