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| 型号： | AS1334-BTDT |
| 厂商： | ams |
| 文件页数： | 11/19页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.65A 8TDFN |
| 设计资源： | Design Support Tool |
| 标准包装： | 1,000 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.2 V ~ 3.4 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 2MHz |
| 电流 - 输出： | 650mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-TDFN（3x3） |
AS1334
Datasheet - D e t a i l e d D e s c r i p t i o n
8 Detailed Description
The AS1334 is a simple, step-down DC-DC converter optimized for powering portable applications that require low dropout voltages such as
mobile phones, portable communicators, and similar battery powered RFID devices. Besides being packed with numerous features like current
overload protection, thermal overload shutdown and soft start, AS1334 displays the following characteristics:
Its operation is based on current-mode buck architecture with synchronous rectification for high efficiency.
Allows the application to operate at maximum efficiency over a wide range of power levels from a single Li-Ion battery cell.
Provides for a maximum load capability of 650mA in PWM mode, wherein the maximum load range may vary depending on input voltage,
output voltage and the selected inductor.
Is ranked at an efficiency of around 96% for a 400mA load with a 3.6V input voltage.
Figure 22. AS1334 - Functional Block Diagram
1.13V
–
+
POK
Oscillator
VDD
PV IN
Current
Sense
FB
Mosfet
Control
SW
Soft Start
Main Control
Logic
EN
Shutdown
Control
AS1334
SGND
PGND
The size of the external components is reduced by using a high switching frequency (2MHz). Figure 1 on page 1 demonstrates that only three
external power components are required for implementation. Also, the system controller should set EN low during power-up and other low supply
Revision 1.09
10 - 18
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1334-BTDT-12 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:650mA, Ultra low Ripple Step Down DC/DC Converter |
| AS1334-BTDT-15 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:650mA, Ultra low Ripple Step Down DC/DC Converter |
| AS1334-BTDT-18 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:650mA, Ultra low Ripple Step Down DC/DC Converter |
| AS1334-BTDT-25 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:650mA, Ultra low Ripple Step Down DC/DC Converter |
| AS1334-BTDT-30 | 功能描述:IC REG BUCK SYNC 3V 0.65A 8TDFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:50 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:5 V ~ 25 V 输入电压:2.3 V ~ 5.5 V PWM 型:电流模式 频率 - 开关:600kHz，1.2MHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 包装:管件 供应商设备封装:8-MSOP |
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