产品概述
描述
The L6981 is an easy to use synchronous monolithic step-down regulator capable of delivering up to 1.5 A DC to the load. The wide input voltage range makes the device suitable for a broad range of applications. The L6981 is based on a peak current mode architecture and is packaged in an SO8 with internal compensation, thus minimizing design complexity and size. The L6981 is available both in low consumption mode (LCM) and low noise mode (LNM) versions. LCM maximizes the efficiency at light-load with controlled output voltage ripple so the device is suitable for battery-powered applications. LNM makes the switching frequency constant and minimizes the output voltage ripple for light-load operations, meeting the specification for low noise sensitive applications.The EN pin provides enable/disable functionality. The typical shutdown current is 2 µA when disabled. As soon as the EN pin is pulled up the device is enabled and the internal 1.3 ms soft-start takes place. Pulse-by-pulse current sensing on both power elements implements an effective constant current protection and thermal shutdown prevents thermal run-away.
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所有功能
- 3.5 V to 38 V operating input voltage
- Output voltage from 0.85 V to VIN
- 1.5 A DC output current
- Internal compensation network
- Two different versions: LCM for high efficiency at light-loads and LNM for noise sensitive applications
- 2 μA shutdown current
- Internal soft-start
- Enable
- Overvoltage protection
- Output voltage sequencing
- Thermal protection
- Synchronization to external clock for LNM devices
- SO8 package
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产品规格 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 18 Jan 2021 | 18 Jan 2021 |
技术文档 (1)
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| 20 Jan 2020 | 20 Jan 2020 |
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| 23 Mar 2020 | 23 Mar 2020 |
EDA Symbols, Footprints and 3D Models
STMicroelectronics - L6981
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
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Footprints
3D models
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** |
|---|---|---|---|---|---|
| L6981CDR | 批量生产 | SO-8 | 工业 | Ecopack2 | |
| L6981NDR | 批量生产 | SO-8 | 工业 | Ecopack2 |
(**) 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 | 从分销商订购 | 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 | |||||||||||
| L6981CDR | 3 distributors | Free Sample Buy Direct | 批量生产 | EAR99 | NEC | Tape And Reel | SO-8 | - | - | CHINA | 1.0 / 1k | |
| L6981NDR | 3 distributors | Free Sample Buy Direct | 批量生产 | EAR99 | NEC | Tape And Reel | SO-8 | - | - | CHINA | 1.0 / 1k | |
