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| 型号： | AS1331-BTDT |
| 厂商： | ams |
| 文件页数： | 14/17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） |
AS1331
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
9 Application Information
Component Selection
Only three power components are required to complete the design of the buck-boost converter. For the adjustable
version V OUT programming resistors are needed. The high operating frequency and low peak currents of the AS1331
allow the use of low value, low profile inductors and tiny external ceramic capacitors.
Inductor Selection
For best efficiency, choose an inductor with high frequency core material, such as ferrite, to reduce core losses. The
inductor should have low DCR (DC resistance) to reduce the I2R losses, and must be able to handle the peak inductor
current without saturating. A 6.8μH inductor with a >600mA current rating and <400m Ω DCR is recommended.
Table 4. Recommended Inductors
Part Number
L
DCR
Current Rating Dimensions (L/W/T)
Manufacturer
LPS3015-682M
EPL2014-682M
XPL2010-682M
6.8μH
6.8μH
6.8μH
300m Ω
287m Ω
336m Ω
0.89A
0.80A
0.73A
3.0x3.0x1.5mm
2.0x2.0x1.4mm
2.0x1.9x1.0mm
Coilcraft
Capacitor Selection
The buck-boost convertor requires two capacitors. Ceramic X5R or X7R types will minimize ESL and ESR while
maintaining capacitance at rated voltage over temperature. The V IN capacitor should be at least 2.2μF. The V OUT
capacitor should be between 10μF and 47μF. A larger output capacitor should be used if lower peak to peak output
voltage ripple is desired. A larger output capacitor will also improve load regulation on V OUT . See Table 5 for a list of
capacitors for input and output capacitor selection.
Table 5. Recommended Input Capacitor
Part Number
C
TC Code Rated Voltage
Dimensions (L/W/T)
Manufacturer
GRM188R61A225KE34
GRM188R60J475KE19
GRM219R60J106KE19
2.2μF
4.7μF
10μF
X5R
X5R
X5R
10V
6.3V
6.3V
0603, T=0.87mm
0603, T=0.87mm
0805, T=0.95mm
Murata
Table 6. Recommended Output Capacitor
Part Number
C
TC Code Rated Voltage
Dimensions (L/W/T)
Manufacturer
GRM21BR61A106KE19
GRM319R61A106KE19
GRM319R61A106KE19
GRM31CR61C226KE15
GRM31CR60J475ME19
10μF
10μF
10μF
22μF
47μF
X5R
X5R
X5R
X5R
X5R
10V
10V
10V
16V
6.3V
0805, T=1.35mm
1206, T=0.95mm
1210, T=0.95mm
1206, T=1.8mm
1206, T=1.75mm
Murata
Revision 1.04
13 - 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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