ISL8500

2A Standard Buck PWM Regulator

OVERVIEW

The ISL8500 is a high-performance, simple output controller that provides a single, high frequency power solution for a variety of point-of-load applications. The ISL8500 integrates a 2A standard buck PWM controller and switching MOSFET.

The PWM controller in the ISL8500 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 up to 2A 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 ISL8500 power good signal output indicates loss of regulation on the PWM output.

ISL8500 is available in a small 4mmx3mm Dual Flat No-Lead (DFN) package.

KEY 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 2A
  • ±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

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL8500
Basic Information
生产状态
Mass Production
iSim模型
YES
拓扑
Buck
输出数量
1
输入电压最小值 (V)
5.5
输入电压最大值 (V)
25
输出电压最小值 (V)
0.6
输出电压最大值 (V)
19
输出电流最大值 (A)
2
IQ
80 µA
开关频率 (最大值) (MHz)
0.5
开关频率 (最小值) (MHz)
0.5
资质级别
Standard
峰值效率 (%)
94
POR
Yes
SYNCH功能
No
控制类型
Voltage Mode
开关频率范围 (MHz)
0.5
CAN 采样
YES
温度范围
-40 to +85

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