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AS1324-15 PDF预览

AS1324-15

更新时间: 2022-12-18 04:10:44
品牌 Logo 应用领域
艾迈斯 - AMSCO 稳压器
页数 文件大小 规格书
20页 910K
描述
1.5MHz, 600mA, DC/DC Step-Down Regulator

AS1324-15 数据手册

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Data Sheet  
AS1324  
1.5MHz, 600mA, DC/DC Step-Down Regulator  
1 General Description  
2 Key Features  
High Efficiency: Up to 96%  
The AS1324 is a high-efficiency, constant-frequency  
synchronous buck converter available in adjustable- and  
fixed-voltage versions. The wide input voltage range  
(2.7V to 5.5V), automatic powersave mode and minimal  
external component requirements make the AS1324  
perfect for any single Li-Ion battery-powered application.  
Output Current: 600mA  
Input Voltage Range: 2.7V to 5.5V  
Constant Frequency Operation: 1.5MHz  
Variable- and Fixed-Output Voltages  
No Schottky Diode Required  
Automatic Powersave Operation  
Low Quiescent Current: 30µA  
Internal Reference: 0.6V  
Typical supply current with no load is 30µA and  
decreases to 1µA in shutdown mode.  
The AS1324 is available as the standard versions listed  
in Table 1.  
Table 1. Standard Versions  
Model  
Output Voltage  
Adjustable via External Resistors  
Fixed: 1.2V  
AS1324-AD  
AS1324-12  
AS1324-15  
AS1324-18  
Shutdown Mode Supply Current: 1µA  
Thermal Protection  
Fixed: 1.5V  
Fixed: 1.8V  
5-pin TSOT-23 Package  
An internal synchronous switch increases efficiency and  
eliminates the need for an external Schottky diode. The  
internally fixed switching frequency (1.5MHz) allows for  
the use of small surface mount external components.  
3 Applications  
Very low output voltages can be delivered with the inter-  
nal 0.6V feedback reference voltage.  
The device is ideal for mobile communication devices,  
laptops and PDAs, ultra-low-power systems, threshold  
detectors/discriminators, telemetry and remote systems,  
medical instruments, or any other space-limited applica-  
tion with low power-consumption requirements.  
The AS1324 is available in a 5-pin TSOT-23 package.  
Figure 1. Typical Application Diagram – High Efficiency Step Down Converter  
4.7µH  
VOUT = 1.8V, 600mA  
VIN = 2.7V to 5.5V  
4
3
EN  
1
5 VOUT  
VIN  
SW  
CIN  
10µF  
COUT  
10µF  
AS1324-  
18  
AS1324-  
18  
GND 2  
SW 3  
5
1
VOUT  
EN  
4 VIN  
GND  
2
www.austriamicrosystems.com  
Revision 1.03  
1 - 20  

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