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HT7938A

Part Number	HT7938A
Manufacturer	Holtek Semiconductor
Description	High Current and Performance White LED Driver
Published	May 12, 2018
Detailed Description	HT7938A High Current and Performance White LED Driver Feature • Efficiency up to 90% at VIN=4.0V, 5S2P, ILED=20mA • 1...
Datasheet	HT7938A PDF File

Overview

HT7938A High Current and Performance White LED Driver Feature • Efficiency up to 90% at VIN=4.
0V, 5S2P, ILED=20mA • 1.
2MHz fixed switching frequency • Low standby current: 0.
1mA (typ.
) at VEN=0V • Matches LED current • Tiny inductor and capacitors • EN pin dimming frequency up to 200kHz • Up to 10 strings White-LED (LED VF(Max.
)=3.
5V) • Tiny 6-lead SOT23-6 package • Built in OVP, OCP, OTP, UVLO protection Applications • Cellular phones • PDAs • DSCs • Handheld devices • White LED display backlighting General Description The HT7938A is high efficiency boost converter with constant current output for backlight applications in handheld devices.
Using a series connection of LEDs ...

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