TD8202中文资料Step-up Converter数据手册Techcode规格书

描述 Description

The TD8202A/B/C is a current-mode and fixed frequency boost converter with an integrated N-FET to drive up to 8 white LEDs in series.The series connection allows the LED current to be identical for uniform brightness. Its low on-resistance of NFET and feedback voltage reduce power loss and achieve high efficiency. Fast 1MHz current-mode PWM operation is available for input and output capacitors and a small inductor while minimizing ripple on the input supply. The OVP pin monitors the output voltage and stops switching if exceeds the over-voltage threshold. An internal softstart circuit eliminates the inrush current during start-up.The TD8202A/B/C also integrates under-voltage lockout, over-temperature protection, and current-limit circuits. The TD8202/A/B/C is available in a SOT-23-6 packages

特性 Features

Wide Input Voltage from 2.7V to 6V
0.25V Reference Voltage
Fixed 1MHz Switching Frequency
High Efficiency up to 87%
100Hz to 100kHz PWM Brightness Control Frequency
Open-LED Protection
Under-Voltage Lockout Protection
Over-Temperature Protection
<1mA Quiescent Current Dduring Shutdown
SOT-23-6 Packages
Lead Free and Green Devices Available(RoHS Compliant)

应用 Application

White LED Display Backlighting Cell Phone and Smart Phone
PDA, PMP, MP3
Digital Camera