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TS1520

Taiwan Semiconductor Company
Part Number TS1520
Manufacturer Taiwan Semiconductor Company
Description White LED Driver
Published Mar 5, 2010
Detailed Description Step-Up DC-DC Converter, White LED Driver SOT-25 Pin Definition: 1. SW 2. Ground 3. Feedback 4. CTRL 5. Input www.DataS...
Datasheet PDF File TS1520 PDF File

TS1520
TS1520

Overview
Step-Up DC-DC Converter, White LED Driver SOT-25 Pin Definition: 1.
SW 2.
Ground 3.
Feedback 4.
CTRL 5.
Input www.
DataSheet4U.
com TS1520 General Description The TS1520 is a step-up DC-DC converter; operates as current source to drive up to 18 white LEDs in parallel/series configuration.
Series connecting of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors.
The light intensity of these LEDs is proportional to the current passing through them.
The TS1520 switches at a fixed frequency of 700KHz, 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.
The TS1520 can drive up to 18 white LEDs form 4.
5V supply.
The wide input voltage range from 2.
7V to7V is ideal for portable (5V) applications with higher conversion efficiency.
To control LED brightness, the LED current can be pulsed by applying a PWM (pulse width modulated) signal with a frequency range of 100Hz to 50KHz to the CTRL pin.
TS1520 has integrated Over Voltage Protection that prevents damage to the device in case of a high impedance output due to faulty LED or open circuit caused by abnormal conditions.
Features ● ● ● ● ● ● Built-in Internal Switch 2.
7V to 7V input range <1uA shutdown current High Efficiency Drives up to 3S2P to 3S6P White LEDs (VIN at 3.
5V to 5V) Over Voltage Protection 30V Application ● ● ● ● ● ● Cellular Phones Digital Still Cameras Portable Electronics LCD Display Module White LED Backlighting PDAs, GPS terminals Ordering Information Part No.
TS1520CX5 RF Package SOT-25 Packing 3Kpcs / 7” Reel Typical Application Circuit 1/12 Version: B07 Step-Up DC-DC Converter, White LED Driver Absolute Maximum Rating Parameter Input Voltage Supply Voltage (Recommended) FB Voltage SW Voltage CTRL Voltage Ambient Temperature Range Junction Temperature Range www.
DataSheet4U.
com TS1520 Sy...


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