产品概述
描述
The L5970AD is a step down monolithic power switching regulator with a switch current limit of 1.5A so it is able to deliver more than 1A DC current to the load depending on the application conditions.
The output voltage can be set from 1.235V to 35V.
The device uses an internal P-Channel D-MOS transistor (with a typical RDSON of 200mΩ) as switching element to avoid the use of bootstrap capacitor and guarantee high efficiency.
An internal oscillator fixes the switching frequency at 500KHz to minimize the size of external components. Having a minimum input voltage of 4.4V only, it is particularly suitable for 5V bus, available in all computer related applications.
Pulse by pulse current limit with the internal frequency modulation offers an effective constant current short circuit protection.
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所有功能
- INHIBIT FOR ZERO CURRENT CONSUMPTION
- INTERNAL CURRENT LIMITING
- PROTECTION AGAINST FEEDBACK DISCONNECTION
- SYNCHRONIZATION
- THERMAL SHUTDOWN
- VOLTAGE FEEDFORWARD
- 500KHz INTERNALLY FIXED FREQUENCY
- 1.5A INTERNAL SWITCH
- 3.3V / (±2%) REFERENCE VOLTAGE
- OPERATING INPUT VOLTAGE FROM 4.4V TO 36V
- LOW DROPOUT OPERATION: 100% DUTY CYCLE
- ZERO LOAD CURRENT OPERATION
- OUTPUT VOLTAGE ADJUSTABLE FROM 1.235V TO 35V
电路原理图
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EDA符号、封装和3D模型
STMicroelectronics - L5970AD
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符号
封装
3D模型
全部资源
| Resource title | 版本 | Latest update |
|---|
SPICE models (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| ZIP | 22 Sep 2016 | 22 Sep 2016 |
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| L5970AD | 批量生产 | SO-8 | 工业 | Ecopack2 | |
| L5970ADTR | 批量生产 | SO-8 | 工业 | Ecopack2 | |
L5970AD
Package:
SO-8Material Declaration**:
L5970ADTR
Package:
SO-8Material Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
样片和购买
| 产品型号 | Order from distributors | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| L5970ADTR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | EAR99 | NEC | Tape and Reel | SO-8 | -40 | 150 | CHINA | | ||
| L5970AD | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | EAR99 | NEC | Tube | SO-8 | -40 | 150 | CHINA | | ||