PM8908数据手册集成电路（IC）的特殊用途稳压器规格书PDF

描述 Description

The PM8908 is a high efficiency monolithic step-down switching regulator designed mainly for the DDR termination.

The IC operates from 1 V to 3.5 V input voltage (VIN).

The device uses a COT control loop that provides very good performances in terms of load and line transients. The current sense is internally thermally compensated for optimum precision.

The output voltage is adjusted from 0.5 V to 2 V with ± 1% accuracy overtemperature variations.

The PM8908also provides external tracking support.

The PM8908 provides positive and negative overcurrent protection as well as over/undervoltage and overtemperature protection. PGOOD output easily provides real-time information on the output voltage.

The PM8908 is available in a QFN20 3.5 x 4.0 mm package.

特性 Features

• Integrated MOSFETs for high efficiency
• Current COT architecture
• 1 V to 3.5 V input voltage (VIN)
• 5.0 V supply voltage (VCC)
• Constant frequency mode
• 1% output voltage accuracy
• Two programmable switching frequencies (0.6 MHz or 1 MHz)
• ADJ output voltage from 0.5 V to 2 V
• Embedded bootstrap diode
• OV/UV/OC and overtemperature protection
• Soft-off with integrated discharge resistor
• External tracking
• Power Good output
• QFN20 3.5 x 4.0 mm compact package

简介

PM8908属于集成电路（IC）的特殊用途稳压器。由制造生产的PM8908特殊用途稳压器该系列产品用于电源控制、某种形式的转换，适用于特定的复杂应用。因此，各种产品特性集差异较大，包括空燃比传感器接口、汽车交流发电机电压调节、DDR 端接、液体透镜控制、摩托车转向信号控制、热电 (peltier) 冷却器控制、压电触觉控制、阀门控制、小型发动机管理等。