ETC SUN9504

SUN9504
无锡日晟微电子有限公司
1.5 MHz, 800mA Synchronous
Step-Down Converter
GENERAL DESCRIPTION
FEATURES
The SUN9504 is a 1.5MHz constant frequency,
slope compensated current mode PWM stepdown converter. The device integrates a main
switch and a synchronous rectifier for high
efficiency without an external Schottky diode. It
is ideal for powering portable equipment that
runs from a single cell lithium-Ion (Li+) battery.
The SUN9504 can supply 800mA of load current
from a 2.5V to 5.5V input voltage. The output
voltage can be regulated as low as 0.6V. The
SUN9504 can also run at 100% duty cycle for
low dropout operation, extending battery life in
portable system. Pulse Skipping Mode operation
at light loads provides very low output ripple
voltage for noise sensitive applications.
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The SUN9504 is offered in a low profile (1mm)
5-pin, SOT package, and is available in an
adjustable version and fixed output voltage of
1.2V, 1.5V and 1.8V.
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High Efficiency: Up to 96%
1.5MHz Constant Switching Frequency
800mA Output Current at VIN=5V
Integrated Main switch and synchronous
rectifier. No Schottky Diode Required
2.5V to 5.5V Input Voltage Range
Output Voltage as Low as 0.6V
100% Duty Cycle in Dropout
Low Quiescent Current: 270µA
Slope Compensated Current Mode Control
for Excellent Line and Load Transient
Response
Short Circuit Protection
Thermal Fault Protection
<1µA Shutdown Current
Space Saving 5-Pin SOT23 package
Output voltage adjustable(输出电压可调)
APPLICATIONS
EVALUATION BOARD
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Standard Demo Board
SUN9504ET5-02
Cellular and Smart Phones
Microprocessors and DSP Core Supplies
Wireless and DSL Modems
PDAs
MP3 Player
Digital Still and Video Cameras
Portable Instruments
Dimensions (mm)
60X x 60Y x 1.6Z
Typical Application
Figure 1. Basic Application Circuit with
SUN9504 adjustable version, Vout = 1.8V
www.sunriseic.net
sales@sunriseic.net
无锡日晟微电子有限公司
SUN9504
无锡日晟微电子有限公司
Wuxi Sunrise Microelectronics Co.,Ltd
无锡地址:
江苏省无锡市蠡园经济开发区标准厂房A4栋308
电话:0510-85167391
传真:0510-85167391
网址:www.sunriseic.net
深圳地址:
广东省深圳市福田区彩田路福源大厦1栋22F
电话:18820249803(电信座机)
电话:18818785721(电信座机)
传真:0755-82902183
网址:www.sunriseic.net
邮箱:sales@sunriseic.net
www.sunriseic.net
sales@sunriseic.net