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APW1173KAC-TRL 参数 Datasheet PDF下载

APW1173KAC-TRL图片预览
型号: APW1173KAC-TRL
PDF下载: 下载PDF文件 查看货源
内容描述: 2A开关降压开关稳压器 [2A SWITCH STEP DOWN SWITCHING REGULATOR]
分类和应用: 稳压器开关
文件页数/大小: 21 页 / 443 K
品牌: ANPEC [ ANPEC ELECTRONICS COROPRATION ]
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APW1173
2A SWITCH STEP DOWN SWITCHING REGULATOR
Features
2A Internal Switch
Operating Input Voltage from 4.8V to 22V
3.3V
±2%
Reference Voltage
Output Voltage :
APW1173 - adjustable from 1.235V to 20V
Low Dropout Operation: 100% Duty Cycle
500KHz Internally Fixed Frequency
Voltage Feed-Forward
Zero Load Current Operation
Internal Current Limit
Inhibit for Zero Current Consumption
Synchronization
Protection Against Feedback Disconnection
Thermal Protection
External Soft-Start
Over-Voltage Protection
Lead Free Available (RoHS Compliant)
General Description
The APW 1173 is a step down monolithic power
switching regulator with a switching current limit of
3.8A so it is able to deliver more than 2A DC current to
the load depending on the application conditions.
The output voltage can be set from 1.235V to 22V.The
high current level is also achieved utilize an SO8
package with exposed pad frame. The type of package
allows to re-duce the Rth (j-amb) down to approximately
45
°
C/W.
An internal oscillator fixes the switching frequency at
500KHz.
Having a minimum input voltage of 4.8V only, it is
particularly suitable for 5V bus, available in all computer
related applications.
Pulse by pulse current limit with the internal frequency
modulation offers an effective constant current short.
circuit protection.
Pin Description
OUT
SYNC
INH
COMP
1
2
3
4
8
7
6
5
Applications
Consumer: STB, DVD, TV, VCR, Car Radio,
LCD monitors
Networking: XDSL, Modems, DC-DC Modules
Computer: Printers, Audio/Graphic Cards,
Optical Storage, Hard Disk Drive
Industrial: Chargers, Car Battery DC-DC
Converters
VCC
GND
VREF
FB
SOP-8-P (Top View)
= Thermal Pad
(connected to GND plane for better heat
dissipation)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
©
ANPEC Electronics Corp.
Rev. A.5 - Aug., 2005
1
www.anpec.com.tw