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参数资料
| 型号： | AS1331-BTDT |
| 厂商： | ams |
| 文件页数： | 2/17页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST SYNC ADJ 10TDFN |
| 标准包装： | 6,000 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 2.5 V ~ 3.3 V |
| 输入电压： | 1.8 V ~ 5.5 V |
| 电流 - 输出： | 300mA |
| 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： | 10-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-TDFN（3x3） |
Data sheet
AS1331
300mA Buck-Boost Synchronous DC/DC Converters
1 General Description
2 Key Features
This special device is a synchronous buck-boost DC/DC
converter which can handle input voltages above, below,
or equal to the output voltage.
Due to the internal structure of the AS1331 which is
working continuously through all operation modes this
device is ideal for dual or triple cell alkaline/NiCad/NiMH
as well as single cell Li-Ion battery applications.
Because of the implemented Power Save Mode, the
solution footprint and the component count is minimized
and also over a wide range of load currents a high
conversion efficiency is provided.
The device includes two N-channel MOSFET switches
and two P-channel switches. Also following features are
implemented: a quiescent current of typically 22μA
(ideal for battery power applications), a shutdown
current less than 1μA, current limiting, thermal shutdown
and output disconnect.
The AS1331 is available in a 10-pin 3x3mm TDFN
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Input Voltage Range: 1.8V to 5.5V
Output Voltages:
- Fixed: 2.5V, 3.0V, 3.3V
- Adjustable: 2.5V to 3.3V
Output Current: 300mA @ 3.3V
Up to 90% efficiency
Power Good
Output Disconnection in Shutdown
Automatic transition between Buck and Boost mode
Ultra Low Quiescent Current: 22μA, Shutdown Cur-
rent <1μA (Active Low)
Short-Circuit Protection
Low Battery detection
Over Temperature Protection
10-pin 3x3mm TDFN package
package with fixed and adjustable output voltage.
3 Applications
The AS1331 is an ideal solution for handheld
computers, handheld instruments, portable music
players and PDA’s. Two and three cell Alkaline, NiCd or
NiMH or single cell Li battery powered products.
Figure 1. AS1331 - Typical Application Diagram
L1
6.8μH
4 SW1
2 SW2
1.8V to 5.5V
5
8
Low Battery Detect
C 1
R 4
VIN
LBO
R 3
10μF
R 5
On
7
LBI
6
AS1331-AD
1
VOUT
10
R 1
C 2
22μF
V OUT
2.5V to 3.3V
Off
EN
3 PGND
9 GND
FB
R 2
Revision 1.04
1 - 16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1331-BTDT-25 | 制造商:ams 功能描述:T&R / TDFN 3x3 10 |
| AS1331-BTDT-25-1K | 功能描述:IC REG BUCK BST SYNC 2.5V 10TDFN 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 |
| AS1331-BTDT-30 | 制造商:ams 功能描述:IC REG BUCK BOOST SYNC 3V 10TDFN 制造商:ams 功能描述:T&R / TDFN 3x3 10 |
| AS1331-BTDT-30-1K | 功能描述:IC REG BUCK BOOST SYNC 3V 10TDFN 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 |
| AS1331-BTDT-33 | 制造商:ams 功能描述:IC REG BUCK BST SYNC 3.3V 10TDFN 制造商:ams 功能描述:T&R / TDFN 3x3 10 |
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