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參數(shù)資料
| 型號： | AS1331-BTDT-33 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 300mA Buck-Boost Converter; Package Type: TDFN(3x3)-10; Output Range: 3.3V |
| 封裝： | TDFN(3x3)-10 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 2337K |
| 代理商： | AS1331-BTDT-33 |
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Datasheet
1 General Description
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
package with fixed and adjustable output voltage.
2 Key Features
!
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
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
1.8V to 5.5V
AS1331-AD
C
2
22μF
R
2
R
1
On
Off
C
1
10μF
PGND
3
SW2
2
V
OUT
2.5V to 3.3V
6
EN
10
FB
5
VIN
1
VOUT
SW1
4
L1
6.8μH
8
LBO
7
LBI
GND
9
R
3
Low Battery Detect
R
4
R
5
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1331-BTDT-33-1K | 功能描述:IC REG BUCK BST SYNC 3.3V 10TDFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:5 V ~ 25 V 輸入電壓:2.3 V ~ 5.5 V PWM 型:電流模式 頻率 - 開關(guān):600kHz，1.2MHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 包裝:管件 供應(yīng)商設(shè)備封裝:8-MSOP |
| AS1331BTDT33-1K | 制造商:ams 功能描述:TDFN 3x3 10 |
| AS1331-BTDT-33-6K | 功能描述:IC REG BUCK BST SYNC 3.3V 10TDFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:5 V ~ 25 V 輸入電壓:2.3 V ~ 5.5 V PWM 型:電流模式 頻率 - 開關(guān):600kHz，1.2MHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 包裝:管件 供應(yīng)商設(shè)備封裝:8-MSOP |
| AS1331BTDT33-6K | 制造商:ams 功能描述:T&R / TDFN 3x3 10 |
| AS1331-BTDT-A25 | 制造商:ams 功能描述:IC REG BUCK BST SYNC 2.5V 10TDFN |
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