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参数资料
| 型号： | AS1322A-BTTT |
| 厂商： | AUSTRIAMICROSYSTEMS AG |
| 元件分类： | DC/DC变换器 |
| 英文描述： | Adj., 315mA, 1.2 MHz, Boost; Package Type: TSOT23-6; Miscellaneous: Operation; Miscellaneous: with Automatic Powersave |
| 中文描述： | 低电压，微功耗，型DC - DC升压转换器 |
| 封装： | TSOT23-6 |
| 文件页数： | 1/18页 |
| 文件大小： | 900K |
| 代理商： | AS1322A-BTTT |
AS1322
Low Voltage, Micropower, DC-DC Step-Up Converters
wwwaustriamcrosystems.com/DC-DC_Step-Up/AS1322
Revision 1.09
1 - 18
Datasheet
1 General Description
The AS1322A and the AS1322B are synchronous, fixed frequency,
very high-efficiency DC-DC boost converters capable of supplying
3.3V at 150mA froma single AA-supply. Compact size and mnimum
external parts requirements make these devices perfect for modern
portable devices.
High-speed switching frequency (1.2MHz) and internally
compensated PWMcurrent mode design provide highly-reliable DC-
DC conversion, especially when driving white LEDs.
The converters are available as the standard products listed in
Table
1
.
The devices contain two internal MOSFET switches: one NMOS
switch and one PMOS synchronous rectifier.
Anti-ringing control circuitry reduces EMI by damping the inductor in
discontinuous mode, and the devices exhibit extremely low
quiescent current (< 1μA) in shutdown.
In shutdown mode the battery is connected to the output and V
OUT
is held at approximately V
IN
- 0.6V.
The AS1322 is available in a 6-pin TSOT-23 package.
Figure 1. Typical Application Diagram– Single Cell to 3.3V
Synchronous Boost Converter
2 Key Features
!
95% Efficiency
!
Single-Cell Operation
!
Delivers 160mA @ 3.3V (fromSingle AA Cell)
!
Delivers 220mA @ 5.0V (fromTwo AA Cells)
!
Delivers 570mA @ 3.3V (fromTwo AA Cells)
!
Low Start-Up Voltage: 0.85V
!
High-Speed Fixed-Frequency: 1.2MHz
!
Internal PMOS Synchronous Rectifier
!
Automatic Powersave Operation (AS1322A)
!
Continuous Switching at Light Loads (AS1322B)
!
Anti-Ringing Control Mnimzes EMI
!
Logic Controlled Shutdown (< 1μA)
!
Output Range: 2.5 to 5.0V
!
6-pin TSOT-23 Package
3 Applications
The AS1322 is ideal for low-power applications where ultra-small
size is critical as in medical diagnostic equipment, hand-held
instruments, pagers, digital cameras, remote wireless transmtters,
MP3 players, LCD bias supplies, cordless phones, GPS receivers,
and PC cards.
Table 1. Standard Products
Model
Light Load Switching
AS1322A
Automatic Powersave Operation
AS1322B
Continuous Switching
AA Battery
AS1322
C
2
10μF
R
2
604k
Ω
1%
R
1
1.02M
Ω
1%
On
Off
L1
4.7μH
C
1
10μF
GND
2
SW
1
V
OUT
3.3V
160mA
4
SHDNN
3
FB
6
V
IN
5
V
OUT
相关PDF资料 |
PDF描述 |
|---|---|
| AS1322B-BTTT | Adj., 315mA, 1.2 MHz, Boost; Package Type: TSOT23-6; Miscellaneous: with Continuous Switching |
| AS1323-BTTT-27 | 1.6μA Iq, Single Cell, Boost; Package Type: TSOT23-5; Output Range: 2.7V |
| AS1323-BTTT-30 | 1.6μA Iq, Single Cell, Boost; Package Type: TSOT23-5; Output Range: 3.0V |
| AS1323-BTTT-33 | 1.6μA Iq, Single Cell, Boost; Package Type: TSOT23-5; Output Range: 3.3V |
| AS1324-BTTT-AD | 600mA Buck Converter; Package Type: TSOT23-5; Output Range: 0.6V to Vin |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1322A-TT_EK_ST | 功能描述:AS1322 - DC/DC, Step Up 1, Non-Isolated Outputs Evaluation Board 制造商:ams 系列:- 零件状态:有效 主要用途:DC/DC，步升 输出和类型:1，非隔离 功率 - 输出:- 电压 - 输出:2.5 V ~ 5 V 电流 - 输出:570mA 电压 - 输入:1 V ~ 5 V 稳压器拓扑:升压 频率 - 开关:1.2MHz 板类型:完全填充 所含物品:板 使用的 IC/零件:AS1322 标准包装:1 |
| AS1322B | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:Low Voltage, Micropower, DC-DC Step-Up Converters |
| AS1322BBTTT | 制造商:AMS 功能描述:IC STEP-UP DC/DC CONVERTER 6-SOT-23 |
| AS1322B-BTTT | 功能描述:IC REG BOOST SYNC ADJ TSOT23-6 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:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 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:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| AS1322-EB | 制造商:ams 功能描述:AS1322 Evaluation Board |
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