TS1937 Datasheet - Taiwan Semiconductor Company

TS1937 Boost (Step-up) WLED Driver

The TS1937 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. The device can drive 2 ~ 12 LEDs in series from a Li-Ion cell. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast.

TS1937 Features

* Inherently Matched LED Current High Efficiency: 88% Typical Drives Up to 6 LEDs @ Vin 5V Drives Up to 12 LEDs @ Vin 12~15V 36V Rugged Bipolar Switch Fast 1.2MHz Switching Frequency Requires Only 0.22µF Output Capacitor PWM dimming control 1KHz to

TS1937_TaiwanSemiconductorCompany.pdf