参数资料
| 型号： | AS1337A-BTDT |
| 厂商： | ams |
| 文件页数： | 10/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BOOST SYNC ADJ 8TDFN |
| 标准包装： | 1 |
| 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 ~ 5 V |
| 输入电压： | 0.65 V ~ 4.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.2MHz |
| 电流 - 输出： | 200mA |
| 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-WDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 8-TDFN（3x3） |
| 其它名称： | AS1337A-BTDTDKR |
AS1337
Datasheet - D e t a i l e d D e s c r i p t i o n
Shutdown Battery Feedthrough (AS1337A)
In shutdown the battery input of the AS1337A is connected to the output through the inductor and the small internal synchronous rectifier P-FET.
This allows the input battery to provide backup power for devices such as an idle microcontroller, memory, or real-time-clock, without the usual
diode forward drop. In this way a separate backup battery is not needed.
Shutdown Battery Disconnect (AS1337B)
The AS1337B is designed to allow true output disconnect by opening both P-channel MOSFET rectifiers. During Shutdown V OUT is discharged
via the internal NMOS transistor and connected to GND.
POK Function
The POK output indicates if the output voltage is within 88% (typ.) of the nominal voltage level. As long as the output voltage is within regulation
the open-drain POK output is high impedance. The POK output can be tied to V IN or to V OUT or to any external voltage up to V IN or V OUT via a
pull-up resistance (see Figure 1 on page 1) . If the output voltage drops below 88% (typ.) of the nominal voltage the POK pin is pulled to GND.
Note: It is important to consider that in shutdown mode the POK output is pulled to V IN in order to save current.
Revision 1.05
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1337A-BTDT EB | 制造商:ams 功能描述:Evaluation Board |
| AS1337A-TD_EK_ST | 功能描述:AS1337A - DC/DC, Step Up or Down 1, Non-Isolated Outputs Evaluation Board 制造商:ams 系列:- 零件状态:过期 主要用途:DC/DC，步升/步降 输出和类型:1，非隔离 功率 - 输出:- 电压 - 输出:3.3V 电流 - 输出:200mA 电压 - 输入:0.65 V ~ 4.5 V 稳压器拓扑:升压，降压 频率 - 开关:1.2MHz 板类型:完全填充 所含物品:板 使用的 IC/零件:AS1337A 标准包装:1 |
| AS1337BBTDT | 制造商:ams 功能描述:T&R / TDFN 3x3 10 |
| AS1337B-BTDT | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| AS1339 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:650mA RF Step-Down DC-DC for PA, with two LDOs |
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