参数资料
型号: AS1324-BTTT-15
厂商: ams
文件页数: 1/21页
文件大小: 0K
描述: IC REG BUCK SYNC 1.5V TSOT23-5
设计资源: Design Support Tool
标准包装: 1
类型: 降压(降压)
输出类型: 固定
输出数: 1
输出电压: 1.5V
输入电压: 2.7 V ~ 5.5 V
PWM 型: 电流模式
频率 - 开关: 1.5MHz
电流 - 输出: 600mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: SOT-23-5 细型,TSOT-23-5
包装: 标准包装
供应商设备封装: TSOT-23-5
其它名称: AS1324-BTTT-15DKR
A S1 3 2 4
1 .5 M H z, 6 0 0m A S yn ch r o n o u s D C/ DC C o n v e r te r
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 minimal 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 .
Table 1. Standard Versions
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
Model
AS1324-AD
AS1324-12
AS1324-15
AS1324-18
Output Voltage
Adjustable via External Resistors
Fixed: 1.2V
Fixed: 1.5V
Fixed: 1.8V
Automatic Powersave Operation
Low Quiescent Current: 30μA
Internal Reference: 0.6V
Shutdown Mode Supply Current: ≤ 1μA
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.
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
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/discriminators,
telemetry and remote systems, medical instruments, or any other
space-limited application with low power-consumption requirements.
V IN = 2.7V to 5.5V
4
3
4.7μH
V OUT = 1.8V, 600mA
EN 1
5 V OUT
C IN
VIN
SW
C OUT
10μF
AS1324-18
10μF
AS1324-18
GND 2
1
5
EN
www.ams.com/DC-DC_Step-Up/AS1324
2
GND
VOUT
Revision 1.06
SW 3
4 V IN
1 - 21
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AS1324-BTTT-12 IC REG BUCK SYNC 1.2V TSOT23-5
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