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参数资料
| 型号： | AS1330-BTDT-AD |
| 厂商： | ams |
| 文件页数： | 14/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BST SYNC ADJ 0.15A 8TDFN |
| 标准包装： | 1 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.8 V ~ 3.3 V |
| 输入电压： | 0.6 V ~ 3 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 4MHz |
| 电流 - 输出： | 150mA |
| 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： | 8-UFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 8-TDFN（2x2） |
| 其它名称： | AS1330-BTDT-ADDKR |
AS1330
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
Component Selection
Only three power components are required to complete the design of the boost converter, except the additional two resistors for the voltage
divider to set V OUT . The high operating frequency and low peak currents of the AS1330 allow the use of low value, low profile inductors and tiny
external ceramic capacitors.
Inductor Selection
The inductor should have low ESR to reduce the I2R power losses, and must be able to handle the peak inductor current without saturating.
High-frequency ferrite core inductor materials reduce frequency dependent power losses compared to less expensive powdered iron types,
which result in improved converter efficiency.
A 1 H inductor with a >850mA current rating and low DCR is recommended. For applications where radiated noise is a concern, a toroidal or
shielded inductor can be used.
Capacitor Selection
A 4.7 F capacitor is recommended for C1 and for C2. Small-sized ceramic capacitors are recommended. X5R and X7R ceramic capacitors are
recommended as they retain capacitance over wide ranges of voltages and temperatures.
Output Capacitor Selection
Low ESR capacitors should be used to minimize V OUT ripple. Multi-layer ceramic capacitors are recommended since they have extremely low
ESR and are available in small footprints. Up to 10 F output capacitor is sufficient for most applications. Larger values up to 22 F may be used
to obtain extremely low output voltage ripple and improve transient response.
An additional phase lead capacitor may be required with output capacitors larger than 10 F to maintain acceptable phase margin. X5R and X7R
dielectric materials are recommended due to their ability to maintain capacitance over wide voltage and temperature ranges.
Input Capacitor Selection
Low ESR input capacitors reduce input switching noise and reduce the peak current drawn from the battery. Ceramic capacitors are
recommended for input decoupling and should be located as close to the device as is practical. A 4.7 F input capacitor is sufficient for most
applications. Larger values may be used without limitations.
Table 4. Recommended External Components
Name
C1, C2
L1
Part Number
GRM219R60J106KE19
GRM188R60J475KE19
LQH32PN1R0NN0
LQH32PNR47NN0
EPL2010-102ML
EPL2010-821ML
EPL2010-471ML
Value
10 F
4.7 F
1 H
470nH
1 H
820nH
470nH
Rating
6.3V
6.3V
2.05A
2.55A
1.35A
1.6A
2.2A
Type
X5R
X5R
45m ?
30m ?
99m ?
68m ?
40m ?
Size
0805
0603
3.2x2.5x1.55mm
3.2x2.5x1.55mm
2.0x2.0x1.0mm
2.0x2.0x1.0mm
2.0x2.0x1.0mm
Manufacturer
Murata
Coilcraft
Diode Selection
A Schottky diode should be used to carry the output current for the time it takes the PMOS synchronous rectifier to switch on. For V OUT > 3.0V
a schottky diode is mandatory, for V OUT ≤ 3.0V a it is optional, although using one will increase device efficiency by 2 to 3%. On one hand the
schottky diode reduces the overshoot on the output signal but on the other hand the output disconnect function is no longer working.
Note: Do not use ordinary rectifier diodes, since the slow recovery times will compromise efficiency.
Revision 1.06
13 - 17
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| AS1331-BTDT | 功能描述:IC REG BUCK BST SYNC ADJ 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 |
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