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Product Detailed Parameters
- Description：IC LED DRIVER
- Series：-
- Mfr：onsemi
- Package：Bulk,Bulk
- Type：-
- Topology：-
- Internal Switch(s)：-
- Number of Outputs：-
- Voltage - Supply (Min)：-
- Voltage - Supply (Max)：-
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：-
- Applications：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The CAT4236HTD-GT3 is a high-voltage CMOS boost white LED driver IC manufactured by onsemi. It operates within an input voltage range of 2.8 V to 5.5 V and supports a maximum output current of 40 mA. The device features a fixed switching frequency of 1 MHz and can drive up to eight series-connected LEDs, achieving a maximum output voltage of 30 V. Packaged in a TSOT-23-5 surface-mount format, it includes thermal shutdown protection and functions across an operating temperature range from -40°C to +85°C.
Feature Summary
- Integrated high-voltage boost topology for driving multiple series-connected white LEDs
- Fixed 1 MHz switching frequency enables compact external component sizing
- Built-in thermal shutdown protection ensures operational safety under overload conditions
Applications
- Portable electronic device backlighting systems
- White LED indicator circuits
- Battery-powered lighting modules
Procurement Notes
Verify the specific suffix GT3 against the official datasheet to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status through the manufacturer's environmental documentation. Check the product lifecycle status as end-of-life notifications may impact long-term availability and supply chain stability for production planning.
Selection Notes
Select this component when designing space-constrained applications requiring a single-channel boost driver for white LEDs. Ensure the input power source remains within the 2.8 V to 5.5 V range. Validate that the total forward voltage of the LED string does not exceed the 30 V output limit. Consider the TSOT-23-5 footprint constraints during PCB layout design.
Part Context
This part belongs to the CAT423x family of LED drivers from onsemi, designed specifically for portable electronics. It shares architectural similarities with models like the CAT4237 and CAT4238 but differs in maximum output voltage and current capabilities. The family targets applications requiring efficient power management in small form factors.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the official onsemi catalog for direct replacements or evaluate cross-reference options based on pin compatibility and electrical parameter matching.
