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TS19370 - Boost (Step-up) WLED Driver

General Description

The TS19370 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current.

The device can drive 2 ~ 9 LEDs in series from a Li-Ion cell.

Key Features

  • Inherently Matched LED Current High Efficiency: 88% Typical Drives Up to 6 LEDs @ Vin 5V Drives Up to 9 LEDs @ Vin 9~15V Over Output Voltage Protection 30V Fast 1.2MHz Switching Frequency Requires Only 0.22µF Output Capacitor PWM dimming control 1KHz to 10KHz Analog dimming control Ordering Information Part No. TS19370CX6 RF Package SOT-26 Packing 3Kpcs / 7” Reel Input Voltage vs. Efficiency.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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TS19370 Boost (Step-up) WLED Driver with OVP SOT-26 Pin Definition: 1. SW 6. Input 2. Ground 5. OVP 3. Feedback 4. CTRL General Description The TS19370 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. The device can drive 2 ~ 9 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 resistors. The output capacitor can be as small as 0.22µF, saving space versus alternative solutions. A low 95mV feedback voltage minimizes power loss for better efficiency. Additional feature include over output voltage limiting when LEDs are disconnected. The TS19370 switches at a fixed frequency of 1.