ISL85001数据手册集成电路（IC）的DCDC开关稳压器规格书PDF

描述 Description

The ISL85001 is a high-performance, simple output controller that provides a single, high frequency power solution for a variety of point-of-load applications. The ISL85001 integrates a 1A standard buck PWM controller and switching MOSFET.The PWM controller in the ISL85001 drives an internal switching N-channel power MOSFET and requires an external Schottky diode to generate an output voltage from 0.6V to 19V. The integrated power switch is optimized for excellent thermal performance for up to 1A of output current. The standard buck input voltage range supports a fixed 5V or variable 5.5V to 25V range. The PWM regulator switches at a fixed frequency of 500kHz and utilizes simple voltage mode control with input voltage feed-forward to provide flexibility in component selection and minimize solution size. Protection features include overcurrent, undervoltage and thermal overload protection integrated into the IC. The ISL85001 power-good signal output indicates loss of regulation on the PWM output.ISL85001 is available in a small 4mmx3mm Dual Flat No-Lead (DFN) package.

特性 Features

• Standard buck controller with integrated switching power MOSFET
• Integrated boot diode
• Input voltage range
• Fixed 5V ±10%
• Variable 5.5V to 25V
• PWM output voltage adjustable from 0.6V to 19V with continuous output current up to 1A
• ±1% VFB tolerance
• Voltage mode control with voltage feed-forward
• Fixed 500kHz switching frequency
• Externally adjustable soft-start time
• Output undervoltage protection
• Enable inputs
• PGOOD output
• Overcurrent protection
• Thermal overload protection
• Internal 5V LDO regulator
• Pb-free (RoHS compliant)

应用 Application

• General purpose
• WLAN Cards-PCMCIA, Cardbus32, MiniPCI cards-compact flash cards
• Hand-held instruments
• LCD panel
• Set-top box