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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：38V
- Current - Output / Channel：750mA (Switch)
- Frequency：1MHz
- Dimming：Analog, PWM
- Applications：-
- 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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Overview
The CAT4240TD-GT3 is a DC/DC step-up converter designed as an LED driver, delivering accurate constant current. It operates at a fixed switching frequency of 1MHz, enabling the use of small external ceramic capacitors and inductors. The device features a high-voltage output stage suitable for driving mid-size and large panel displays with up to ten white LEDs in series. Current regulation is achieved via an external resistor.
Feature Summary
- Provides precise constant current ideal for LED driving applications
- High-voltage output stage supports multiple series-connected LEDs
- Fixed switching frequency allows for compact passive component selection
Applications
- Mid-size panel displays
- Large panel displays
- LED lighting systems requiring high voltage boost
Procurement Notes
Verify end-of-life status before design finalization. The CAT4240TD-GT3 has been discontinued by onsemi. Confirm availability through authorized distributors or secondary markets if immediate procurement is required. Ensure compatibility with existing supply chain constraints due to limited stock potential.
Selection Notes
Select this component for designs requiring a simple boost topology for LED strings. The fixed frequency operation simplifies filter design. Consider the discontinuation status when planning long-term production. Evaluate alternative drivers within the same family or newer generations if future supply stability is critical.
Part Context
This part belongs to the CAT4240 series from onsemi, utilizing the Treo platform technology. The Treo platform is based on BCD 65nm node process technology, offering modular architecture for power management ICs. This specific model is a surface-mount device intended for efficient LED illumination solutions.
Replacement Considerations
The CAT4240TD-GT3 is officially discontinued. No direct public substitute part numbers are confirmed in the provided documentation. Designers should consult onsemi for recommended obsolescence alternatives or evaluate other LED driver ICs from the manufacturer's current portfolio.
