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参数资料
型号： AS1332-BWLT
厂商： AUSTRIAMICROSYSTEMS AG
元件分类： DC/DC变换器
英文描述： 650mA, RF Buck Converter, Vcon
文件页数： 11/19页
文件大小： 1457K
代理商： AS1332-BWLT
11 - 19
AS1332
Datasheet - Detailed Description
8 Detailed Description
For driving RF power amplifiers in portable devices and battery powered RF devices the AS1332 is a very suitable DC-
DC converter. The AS1332 features current overload protection, thermal overload shutdown and soft start. Besides
these features the device also displays the following characteristics:
!
Current-mode buck architecture with synchronous rectification for high efficiency.
!
Operation at maximum efficiency over a wide range of power levels from a single Li-Ion battery cell.
!
The maximum load capability of 650mA is provided in PWM mode, wherein the maximum load range may vary
depending on input voltage, output voltage and the selected inductor.
!
Efficiency is of around 96% for a 400mA load with 3.16V output and 3.6V input.
!
For longer battery life, the output voltage can be dynamically programmable from 1.3V (typ) to 3.16V (typ) by
adjusting the voltage on the control pin without the need for external feedback resistors.
Figure 30. AS1332 Block Diagram
AS1332 is fabricated using a 8-pin WL-CSP, which requires special design considerations for implementation. Its fine
bumppitch requires careful board design and precision assembly equipment. This package offers the smallest possible
size, for space-critical applications such as cell phones, where board area is an important design consideration. The
size of the external components is reduced by using a high switching frequency (2MHz). For implementation only three
external power components are required
(see Figure 1 on page 1)
. The 8-pin WL-CSP package is appropriate for
opaque case applications, where its edges are not subject to high intensity ambient red or infrared light. Also the
system controller should set EN low during power-up and other low supply voltage conditions.
See Shutdown Mode on
page 13
.
Mosfet
Control
Logic
Shutdown
Control
Main Control
Clamp
Logic and
Soft Start
Oscillator
Current
Sense
PVIN
P
C
VDD
E
A
FB
VCON
EN
SW
AGND
PGND
AS1332
相关PDF资料
PDF描述
AS1333-BWLT 650mA, RF, Buck Converter; Package Type: CS-WLP(1.5x1.5)-8; Output Range: 3.09V
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相关代理商/技术参数
参数描述
AS1332-BWLT EB 制造商:ams 功能描述:Evaluation Board
AS1333 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:650mA, Step Down DC/DC Converter for Portable Applications
AS1333 EB 制造商:AMS 功能描述:BOARD EVAL FOR AS1333
AS1333-BWLT 功能描述:IC REG BUCK SYNC 3.09V 8WLCSP 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
AS1333-BWLT EB 制造商:ams 功能描述:Evaluation Board
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