产品概述
描述
This primary controller I.C., developed in BCD60II technology, has been designed to implement off line or DC-DC power supply applications using a fixed frequency current mode control.
Based on a standard current mode PWM controller this device includes some features such as programmable soft start, IN/OUT synchronization, disable (to be used for over voltage protection and for power management), precise maximum Duty Cycle Control, 100ns leading edge blanking on current sense, pulse by pulse current limit, overcurrent protection with soft start intervention, and Standby function for oscillator frequency reduction when the converter is lightly loaded.
-
所有功能
- PRIMARY OVERCURRENT FAULT DETECTION WITH RE-START DELAY
- PROGRAMMABLE SOFT START
- IN/OUT SYNCHRONIZATION
- PWM UVLO WITH HYSTERESIS
- INTERNAL 100ns LEADING EDGE BLANKING OF CURRENT SENSE
- LATCHED DISABLE
- PACKAGE: DIP16 AND SO16
- 100% AND 50% MAXIMUM DUTY CYCLE LIMIT
- PROGRAMMABLE DUTY CYCLE
- CURRENT-MODE CONTROL PWM
- LOW START-UP CURRENT (< 120µA)
- SWITCHING FREQUENCY UP TO 1MHz
- FULLY LATCHED PWM LOGIC WITH DOUBLE PULSE SUPPRESSION
- STANDBY FUNCTION
- HIGH-CURRENT OUTPUT DRIVE SUITABLE FOR POWER MOSFET (1A)
电路原理图
特别推荐
EDA符号、封装和3D模型
STMicroelectronics - L5991
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 | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| L5991AD | 批量生产 | SO-16 | 工业 | Ecopack2 | |
| L5991AD13TR | 批量生产 | SO-16 | 工业 | Ecopack2 | |
| L5991D | 批量生产 | SO-16 | 工业 | Ecopack2 | |
| L5991D013TR | 批量生产 | SO-16 | 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 | 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 | |||||||||||
| L5991AD13TR | 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-16 | - | - | CHINA | | ||
| L5991D | 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-16 | - | - | CHINA | | ||
| L5991AD | 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-16 | - | - | CHINA | | ||
| L5991D013TR | 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-16 | - | - | CHINA | | ||