參數(shù)資料
型號: AS1324-BTTT-18
廠商: AUSTRIAMICROSYSTEMS AG
元件分類: DC/DC變換器
英文描述: 600mA Buck Converter; Package Type: TSOT23-5; Output Range: 1.8V
封裝: TSOT23-5
文件頁數(shù): 1/20頁
文件大?。?/td> 970K
代理商: AS1324-BTTT-18
AS1324
1.5MHz, 600mA, DC/DC Step-Down Regulator
wwwaustriamcrosystems.com/DC-DC_Step-Down/AS1324
Revision 1.05
1 - 20
Datasheet
1 General Description
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 mnimal external component requirements make the
AS1324 perfect for any single Li-Ion battery-powered application.
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
.
An internal synchronous switch increases efficiency and elimnates
the need for an external Schottky diode. The internally fixed
switching frequency (1.5MHz) allows for the use of small surface
mount external components.
Very low output voltages can be delivered with the internal 0.6V
feedback reference voltage.
The AS1324 is available in a 5-pin TSOT-23 package.
Figure 1. Typical Application Diagram– High Efficiency Step
Down Converter
2 Key Features
!
High Efficiency: Up to 96%
!
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
!
Shutdown Mode Supply Current:
1μA
!
Thermal Protection
!
5-pin TSOT-23 Package
3 Applications
The device is ideal for mobile communication devices, laptops and
PDAs, ultra-low-power systems, threshold detectors/discrimnators,
telemetry and remote systems, medical instruments, or any other
space-limted application with low power-consumption requirements.
Table 1. Standard Versions
Model
Output Voltage
AS1324-AD
Adjustable via External Resistors
AS1324-12
Fixed: 1.2V
AS1324-15
Fixed: 1.5V
AS1324-18
Fixed: 1.8V
AS1324-18
C
OUT
10μF
C
IN
10μF
GND
2
V
IN
= 2.7V to 5.5V
V
OUT
= 1.8V, 600mA
4.7μH
1
EN
5
VOUT
4
VIN
3
SW
5 V
OUT
AS1324-18
4 V
IN
2
GND
3
SW
1
EN
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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