ISL8540 DC/DC Power Switching Regulator

VIN (min) (V)	9
VIN (max) (V)	40
VOUT (min) (V)	1.21
VOUT (max) (V)	35
IOUT (max) (A)	2
BOM Total Footprint	*

The ISL8540 is a step down DC/DC power switching regulator which accepts 9.0V to 40V input and provides a 2A output current. The output voltage can be set in the range between 1.21V and 35V by means of an external divider. The device uses an internal power DMOS transistor with a typical rDS(ON) of 0.19Ω to obtain very high efficiency and high switching speed. A switching frequency in the range of 100kHz to 600kHz can be realized (the maximum power dissipation of the various packages must be observed). Notable features of this next generation of DC/DC converter include pulse-by-pulse current limit for FET protection, hiccup mode for short circuit protection, voltage feedforward regulation, Frequency SYNC, soft-start, low standby current of 60μA typical in the disabled state, and thermal shut-down. The device is available in a 20 Ld HTSSOP package.

ISL8540 特点

Voltage feedforward mode
Step down DC/DC supporting up to 2A
Input voltage range of 9.0V to 40V
Internal reference of 1.21V ±1%
Adjustable output voltage range of 1.21V to 35V
Adjustable switching frequency 100kHz to 600kHz
Frequency SYNC pin
Zero load current operation
Pulse by pulse mode current limit and Hiccup mode
Low standby current of 60μA typical
Thermal shut-down
Load dump to 100V for 400ms
Pb-free (RoHS compliant)

ISL8540 应用

Non-isolated telecom power supply
Industrial and automotive power supplies
Portable computers
Battery chargers
Distributed power systems

ISL8540 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
ISL8540EVAL1Z	量产		评估板	N/A
ISL8540IVEZ	Coming Soon	工业级	20 Ld HTSSOP	3
ISL8540IVEZ-T	Coming Soon	工业级	20 Ld HTSSOP T+R	3