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| 型号： | AS1330-BTDT-AD |
| 厂商： | ams |
| 文件页数： | 11/18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
9 Application Information
The AS1330 is ideal for space critical applications where ultra-small size is critical as in medical diagnostic equipment, hand-held instruments,
digital cameras, MP3 players, GPS receivers, and PC or Memory cards.
Along with Figure 1 on page 1 , Figure 20 , Figure 21 and Figure 22 on page 11 depict a few of the many applications for which the AS1330
converters are perfectly suited.
Adjustable Output Voltage
The integrated error amplifier is an internally compensated trans-conductance (g m ) type (current output). The internal 0.8V reference voltage is
compared to the voltage at pin FB to generate an error signal at the output of the error amplifier. A voltage divider from V OUT to GND programs
the output voltage from 1.8 to 3.0V via pin FB as:
V OUT = 0.8V(1 + (R 1 /R 2 ))
(EQ 1)
Sense Function
The AS1330 offers a sense function for monitoring a voltage (e.g.: the battery voltage). The sense function can work in three different modes:
- SENSE to VIN: If the pin SENSE is directly connected to pin VIN, the internal reference voltage (0.8V) is used to compare it with V IN . The
POK goes high when the voltage on SENSE is above 0.8V and low when the voltage on SENSE is below 0.8V (see Figure 21 on page
- SENSE to a voltage divider: With the voltage divider the threshold voltage on which the POK reacts can be set. If the monitored voltage is
higher then the user set threshold voltage the POK is high, when the monitored voltage is lower the POK goes low (see Figure 20) . The
threshold voltage can be set with the following equation:
Vthreshold = 0.8V(1 + (R IN1 /R IN2 ))
Figure 20. AS1330 - Boost Converter, Single AA Cell to 3.0V fixed Output Voltage
L1
1μH
SW
AA Battery
V OUT
(EQ 2)
Vthreshold
1.2V
C1
4.7μF
VIN
AS1330-3.0
VOUT
C2
4.7μF
3.0V
POK
On
RIN1
320k ?
Off
EN
SENSE
GND
FB
RIN2
680k ?
Revision 1.06
10 - 17
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相关代理商/技术参数 |
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| AS1331 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:300mA Buck-Boost Synchronous DC/DC Converters |
| AS1331 EB | 制造商:AMS 功能描述:BOARD EVAL FOR AS1331 制造商:AMS 功能描述:Evaluation Board for the AS1331 Buck-Boost Convert IC |
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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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