产品概述
描述
The STEVAL-L6981CDR evaluation board is based on the L6981CDRsynchronous monolithic step-down regulator capable of delivering up to 1.5 A DC. Its wide input voltage range makes the device suitable for a broad range of applications.
The device implements peak current mode architecture in an SO 8L package with internal compensation to minimize design complexity and size.
The L6981CDR is available in low consumption mode (LCM) and low noise mode (LNM) versions.
LCM maximizes efficiency at light load with controlled output voltage ripple, making the device extremely suitable for battery-powered applications.
LNM makes the switching frequency constant and minimizes the output voltage ripple overload current range, meeting the specification for noise sensitive applications.
The EN pin manages the enable/disable function. The typical shutdown current is 2 μA when disabled. When 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 effective constant current protection while 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 function
- Overvoltage protection
- Output voltage sequencing
- Thermal protection
- SO 8L package
- Synchronization with external clock for LNM devices
特别推荐
全部资源
| Resource title | 版本 | Latest update |
|---|
Board Manufacturing Specifications (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 18 Feb 2021 |
18 Feb 2021
|
物料清单 (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| 1.0 | 18 Feb 2021 |
18 Feb 2021
|
Schematic Pack (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| 1.0 | 18 Feb 2021 |
18 Feb 2021
|
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | WEEE Compliant | 材料声明** |
|---|---|---|---|---|---|---|
| STEVAL-L6981CDR |
批量生产
|
CARD | 工业 | Ecopack2 | Yes |
|
STEVAL-L6981CDR
Package:
CARDMaterial 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 | 从分销商订购 | 从ST订购 | 核心产品 | 供货状态 | 供应商 | ECCN (US) | ECCN (EU) | Country of Origin | Board production status | Budgetary Price (US$)*/Qty | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| STEVAL-L6981CDR | 4 distributors | Buy Direct | L6981CDR |
批量生产
|
- | EAR99 | NEC | ITALY | - | 36.0 / 1 |
