CAT4237TD-GT3

$1.28

Description：IC LED DRVR RGLTR PWM TSOT23-5
Series：-
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:22613da1c9ed Category: LED Drivers IC Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：IC LED DRVR RGLTR PWM TSOT23-5
Series：-
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)
Type：DC DC Regulator
Topology：Step-Up (Boost)
Internal Switch(s)：Yes
Number of Outputs：1
Voltage - Supply (Min)：2.8V
Voltage - Supply (Max)：5.5V
Voltage - Output：30V
Current - Output / Channel：40mA
Frequency：1MHz
Dimming：Analog, PWM
Applications：Backlight
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：SOT-23-5 Thin, TSOT-23-5
Supplier Device Package：TSOT-23-5
Grade：-
Qualification：-

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CAT4237TD-GT3

Overview

The CAT4237TD-GT3 is a single-channel boost LED driver IC manufactured by onsemi, designed for driving series-connected white LEDs. It operates within an input voltage range of 2.8 V to 5.5 V and delivers a regulated output current of 40 mA at high levels or 1 mA at low levels. The device supports a maximum output voltage of 30 V and functions at a switching frequency of 1 MHz. Packaged in a TSOT-23-5 surface-mount format, it ensures reliable operation across temperatures from -40°C to +85°C while consuming a maximum supply current of 1.5 mA.

Feature Summary

Integrates thermal shutdown protection to safeguard the component during overtemperature conditions.
Utilizes a compact TSOT-23-5 package suitable for space-constrained surface-mount applications.

Applications

Driving high-efficiency white LEDs
High-brightness LED illumination systems

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance details via official documentation. Validate that the specific ordering suffix matches required packaging formats. Ensure design compatibility with existing boost topology requirements before procurement.

Selection Notes

Select this driver for applications requiring precise constant-current regulation for series LED strings. Consider the 40 mA output capability and 30 V voltage limit when sizing the LED array. Evaluate the 1 MHz switching frequency against electromagnetic interference constraints. Verify that the operating temperature range meets environmental specifications.

Part Context

This component belongs to the CAT4237 series of high-voltage CMOS constant-current DC/DC converters. It is engineered specifically for efficient white LED driving. The series shares architectural similarities with other onsemi LED drivers but is distinct in its specific current and voltage ratings.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult manufacturer documentation for potential obsolescence management strategies or alternative series recommendations.