产品概述
描述
The L4976 is a step down monolithic power switching regulator delivering 1A at a voltage between 3.3V and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rds(ON) of 0.25W) to obtain very high efficency and high switching speed. A switching frequency up to 300KHz is achievable (the maximum power dissipation of the packages must be observed). A wide input voltage range between 8V to 55V and output voltages regulated from 3.3V to 40V cover the majority of today’s applications. Features of this new generations of DC-DC converter include pulse-by-pulse current limit, hiccup mode for short circuit protection, voltage feedforward regulation, protection against feedback loop disconnection and thermal shutdown. The device is available in plastic dual in line, DIP8 for standard assembly, and SO16W for SMD assembly.
-
所有功能
- Protection against feedback disconnection
- and hiccup mode)
- Thermal shutdown
- Zero load current operation
- Voltage feedforward
- Up to 1A step down converter
- Precise 5.1V reference voltage
- Operating input voltage from 8v to 55v
- Switching frequency adjustable up to 300kHz
- Internal current limiting (pulse-bypulse
- Output voltage adjustable from 0.5V to 50V
电路原理图
eDesignSuite
eDesignSuite 是一套全面且易于使用的设计辅助工具，旨在帮助您简化系统开发过程，并支持广泛的ST产品。
电源管理设计中心
组件的热电模拟器
信号调节设计工具
NFC/RFID计算器
电源设计工具
LED照明设计工具
数字电源工作台
电源树设计器
AC开关模拟器
整流二极管模拟器
STPOWER Studio
Twister Sim
TVS模拟器
Estimate
PCB热模拟器
有源滤波器
比较器
低侧电流检测
高侧电流检测
NFC电感
UHF链路预算
NFC调谐电路
特别推荐
EDA符号、封装和3D模型
意法半导体 - L4976
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.
Please select one model supplier :
符号
封装
3D模型
质量与可靠性
| 产品型号 | Marketing Status | 包 | 等级规格 | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | 材料声明** |
|---|---|---|---|---|---|---|---|
| L4976D | 批量生产 | SO-16W | 工业 | Ecopack3 | - | - | |
| L4976D013TR | 批量生产 | SO-16W | 工业 | Ecopack3 | - | - |
(**) 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 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 包 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||
| L4976D | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| L4976D013TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
L4976D 批量生产
L4976D013TR 批量生产