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TS19378CSRLG Datasheet(PDF) 1 Page - Taiwan Semiconductor Company, Ltd |
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TS19378CSRLG Datasheet(HTML) 1 Page - Taiwan Semiconductor Company, Ltd |
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1 / 7 page  TS19378 Taiwan Semiconductor Document Number: DS_P0000199 1 Version: B15 2A Buck (Step-down) WLED Driver DESCRIPTION The TS19378 is a high voltage step-down converter designed for driving up to 10 series white LEDs from a 40V system input. The total LED driving current up to 2A, which is measured through an external current sense resistor. Its low 200mV feedback voltage reduces power loss and improves efficiency. The OVP pin monitors the output voltage and turns off the converter if an over-voltage condition is present due to an open circuit condition. The TS19378 includes current limit, short circuit protection and thermal shutdown protection preventing damage. TS19378 provides high power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to the duty ratio linearly from 0 up to 100%. Since this converter can accommodate an input voltage up to 40V, it is also suitable for the operation via an AC adapter. FEATURES ● Input Voltage Range 8V~40V ● Output voltage up to 38V ● 2A Switch Output Current ● Duty ratio: 0%~100% PWM control ● 300kHz Switching Frequency ● Enable/Disable Functions ● Soft Start Time Control ● Current limit and Thermal Shutdown ● Short Circuit Protections ● Built-in Internal SW P-CH MOSFET APPLICATION ● White LED Backlighting ● High Power LED Application ● Multiple LED Driving ● LED Lighting Equipment SOP-8EP Pin Definition: 1. EN/SS 8. COMP 2. GND 7. FB 3. VGATE 6. OVP 4. VCC 5. SW (Connected to exposed pad) Notes: Moisture sensitivity level: level 3. Per J-STD-020 TYPICAL APPLICATION CIRCUIT COUT ESR Range R2 C7 30~80mΩ 470R 10nF 80~300mΩ 100R 15nF |
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