CAT4238TD-GT3 LED Drivers by ON Semiconductor

LED Driver, Boost Converter, High Efficiency

Status: Active
Series: CAT4238
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The CAT4238 is a DC-DC step-up converter that delivers an accurate constant current ideal for driving LEDs. Operation at a fixed switching frequency of 1 MHz 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 40 mA can be supported over a wide range of input supply voltages up to 5.5 V, 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. In addition to thermal protection and overload current limiting, the device also enters a very low power operating mode during 'Open LED' fault conditions.

Where to Buy

Prices starting from US$0.58

Distributor Stock
Logo for RS
RS
from US$0.81
110
in stock
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Logo for Distrelec
Distrelec
from US$2.00
2,326
in stock
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Logo for element14
element14
from US$1.14
1,442
in stock
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Logo for Farnell
Farnell
from US$0.66
1,442
in stock
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Logo for Newark Electronics
Newark Electronics
from US$0.58
-
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Logo for RS Americas
RS Americas
from US$1.35
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Logo for Avnet America
Avnet America
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-
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Features

Drives High Voltage LED strings (38 V)
Up to 87% Efficiency
Low Quiescent Ground Current 0.6 mA
Adjustable Output Current
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
Mid-size and Large Panel Displays
Applications
LED Drive in battery Powered Devices
Portable Gaming Systems
End Products
GPS Navigation Systems
Digital Still Cameras

Specifications

Description CAT4238
Compliance Pb-free Halide free
Topology Step-Up
VIN Min (V) 2
VIN Max (V) 5.5
VO Max (V) 38
IO Max (mA) 100
fSW Typ (kHz) 1000
Package Type TSOT-23-5

Alternative Descriptions

onsemi LED Driver IC 38V 40mA TSOT-23 | Distrelec
LED DRIVER, BOOST CONV, TSOT23-5 | element14
Step-up LED Driver 2.8-5.5V 40mA TSOT-23 | RS
Led Driver, Boost, Tsot-23-5, Full Reel | Newark Electronics
CAT4238TD-GT3 LED Driver IC, 2 - 5.5 V dc 100mA 5-Pin SOT-23 | ON Semiconductor CAT4238TD-GT3 | RS Americas
LED DRVR 10Segment 3.3V/5V 5-Pin TSOT-23 T/R | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a CAT4238TD-GT3?

Additional datasheets, footprints and schematics for CAT4238TD-GT3 are listed on our Part Details page. You can also find images and similar parts to CAT4238TD-GT3 on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for CAT4238TD-GT3 on our Product Comparison page. Access via the 'View Pricing & Stock' button to view CAT4238TD-GT3 price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does CAT4238TD-GT3 fall under?

The CAT4238TD-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 CAT4238TD-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 CAT4238TD-GT3 you can contact the distributor directly for product support, shipping queries etc.

Is the CAT4238TD-GT3 RoHS compliant?

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

Which authorised distributors for CAT4238TD-GT3 have stock available?

Authorised distributors including Distrelec, element14, Farnell, RS and Newark Electronics have stock available or on a lead time for CAT4238TD-GT3.

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

Stock availability and lead times will be displayed for CAT4238TD-GT3 often in real-time on the comparison pages.

What if I can't find stock of CAT4238TD-GT3?

You can fill out our help required form which you can use to request a quote for CAT4238TD-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.

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