APW7207/A数据手册Anpec中文资料规格书

描述 Description

The APW7207/A is a current-mode and fixed frequency boost converter with an integrated N-FET to drive up to 10 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 reduces power loss and achieves 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 soft-start circuit eliminates the inrush current during start-up. The APW7207/A also integrates under-voltage lockout, over-temperature protection, and current limit circuits. TheAPW7207/Ais available in TSOT-23-6Aand TDFN2x2- 8 packages.

特性 Features

• Wide Input Voltage from 2.5V to 6V
• 0.2V Reference Voltage
• Fixed 1MHz Switching Frequency
• High Efficiency up to 88%
• 100Hz to 200kHz PWM Brightness Control Frequency
• Open-LED Protection
• Under-Voltage Lockout Protection
• Over-Temperature Protection
• <1µA Quiescent Current During Shutdown
• TSOT-23-6A and TDFN2x2-8 Packages
• Lead Free and Green Devices Available (RoHS Compliant)