APW8716AH数据手册Anpec中文资料规格书

描述 Description

The APW8716AH is a 12A, synchronous, step-down converter with integrated 9.7mΩ N-channel High-Side MOSFET and 5.2mΩ Low-Side MOSFET. The APW8716AH steps down high voltage to generate lowvoltage for chipset or RAM supplies in notebook computers. The APW8716AH provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode. In Pulse Frequency Modulation (PFM), the APW8716AH provides very high efficiency over light to heavy loads with loading-modulated switching frequencies. In PWM Mode, the converter works nearly at constant frequency for low-noise requirements. The APW8716AH is equipped with accurate current-limit, output under-voltage, and output over-voltage protections, perfect for various applications. A Power-On-Reset function monitors the voltage on LDO to prevent wrong operation during power-on. The APW8716AH has external adjustable soft-start and integrates output discharge method for soft stop. A soft-start ramps up the output voltage with programmable timing to reduce the start-up current. A soft-stop function actively discharges the output capacitors. The APW8716AH is available in TQFN5x5-30 (Power PAK).

特性 Features

• Adjustable Output Voltage from +0.8V to +12V
- 0.8V Reference Voltage
- +1%Accuracy over Temperature
• Operates fromAn Input Battery Voltage Range of +2.7V to +28V
• 20mA Low Dropout Regulator (LDO)with Fixed 5V Output
• Power-On-Reset Monitoring on LDO pin
• Excellent line and load transient responses
• PFM mode for increased light load efficiency
• Programmable PWM Frequency from 300kHz to 1000kHz
• Integrated 9.7mW at LDO=5V N-Channel MOSFET for High Side
• Integrated 5.2mW at LDO=5V N-Channel MOSFET for Low Side
• Integrated Bootstrap Forward P-CH MOSFET
• External Adjustable Soft-Start and Soft-Stop
• Selectable Forced PWM or automatic PFM/PWM mode
• Powe Good Monitoring
• 70% Under-Voltage Protection
• 125% Over-Voltage Protection
• Current-Limit Protection
- Using Sense Low-Side MOSFET’s RDS(ON)
• Over-Temperature Protection
• TQFN-30 5mmx5mm package
• Lead Free and Green Device Available (RoHS Compliant)
• DesignReference for AECQ100 Grade 1 Compliant