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CAT4238TD-GT3
ID: 198355
High Efficiency 10 LED High Voltage
Boost Converter, TSOT23, ON Semiconductor, RoHS
CAT4238TD-GT3
High Efficiency 10 LED High Voltage Boost Converter, TSOT23, ON Semiconductor, RoHS
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.
High Efficiency 10 LED High Voltage Boost Converter, TSOT23, ON Semiconductor, RoHS
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.
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 uA
- Automatic Shutdown at 1.9 V (UVLO)
- Thermal Overload Protection
198355
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High Efficiency 10 LED High Voltage
Boost Converter, TSOT23, ON Semiconductor, RoHS