參數(shù)資料
型號： ISL8540
廠商： Intersil Corporation
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： DC/DC Power Switching Regulator
中文描述： DC/DC電源開關(guān)穩(wěn)壓器
文件頁數(shù)： 1/16頁
文件大小： 952K
代理商： ISL8540
1
FN6495.4
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL8540
DC/DC Power Switching Regulator
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 r
DS(ON)
of 0.19
Ω
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.
Features
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)
Applications
Non-isolated telecom power supply
Industrial and automotive power supplies
Portable computers
Battery chargers
Distributed power systems
Related Literature
Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
Ordering Information
PART
NUMBER
(Note)
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL8540IVEZ
ISL8540IVEZ -40 to +85 20 Ld HTSSOP MDP0048
ISL8540IVEZ-T* ISL8540IVEZ -40 to +85 20 Ld HTSSOP MDP0048
NOTE: These Intersil Pb-free plastic packaged products employ
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