ISL85410

Wide VIN 1A Synchronous Buck Regulator

OVERVIEW

The ISL85410 is a 1A synchronous buck regulator with an input range of 3V to 40V. It provides an easy to use, high efficiency low BOM count solution for a variety of applications.

The ISL85410 integrates both high-side and low-side NMOS FETs and features a PFM mode for improved efficiency at light loads. This feature can be disabled if a forced PWM mode is desired. The part switches at a default frequency of 500kHz but may also be programmed using an external resistor from 300kHz to 2MHz. The ISL85410 has the ability to utilize internal or external compensation. By integrating both NMOS devices and providing internal configuration options, minimal external components are required, reducing BOM count and complexity of design.

With the wide VIN range and reduced BOM, the part provides an easy to implement design solution for a variety of applications while giving superior performance. It will provide a very robust design for high voltage industrial applications as well as an efficient solution for battery powered applications.

The part is available in a small Pb-free 4mmx3mm DFN plastic package with a full-range industrial temperature of -40°C to +125°C.

KEY FEATURES

  • Wide input voltage range 3V to 40V
  • Synchronous operation for high efficiency
  • No compensation required
  • Integrated high-side and low-side NMOS devices
  • Selectable PFM or forced PWM mode at light loads
  • Internal fixed (500kHz) or adjustable switching frequency 300kHz to 2MHz
  • Continuous output current up to 1A
  • Internal or external soft-start
  • Minimal external components required
  • Power-good and enable functions available

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL85410
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)
3
输入电压最大值 (V)
40
输出电压最小值 (V)
0.6
输出电压最大值 (V)
34
输出电流最大值 (A)
1
IQ
80 µA
开关频率 (最大值) (MHz)
2
开关频率 (最小值) (MHz)
0.3
最大占空比 (%)
See Datasheet
资质级别
Standard
峰值效率 (%)
94
POR
Yes
SYNCH功能
Yes
控制类型
Current Mode
开关频率范围 (MHz)
0.3 to 2.0
CAN 采样
YES
温度范围
-40 to +125

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