TS19370CX6 Ver la hoja de datos (PDF) - TSC Corporation

Número de pieza

componentes Descripción

Fabricante

TS19370CX6

Boost (Step-up) WLED Driver with OVP

TSC Corporation 

SOT-26

Pin Definition:

1. SW

6. Input

2. Ground 5. OVP

3. Feedback 4. CTRL

TS19370

Boost (Step-up) WLED Driver with OVP

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 1.2MHz, allowing the use of tiny, low profile inductors and

capacitors to minimize footprint and cost in space consideration applications for cellular phone backlighting or

other hand held equipment.

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.

Package

TS19370CX6 RF SOT-26

Packing

3Kpcs / 7” Reel

Input Voltage vs. Efficiency

Application

● Cellular Phones

● Portable Electronics Devices PDA, GPS

● LCD Display Module

● White LED Backlighting

Typical Application Circuit

1/8

Version: D08

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