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.
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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
意法半导体 - L5991
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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 | 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 | 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) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L5991AD13TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | ||||||||||
| L5991D | | | distributors 无法联系到经销商，请联系我们的销售办事处 | ||||||||||
| L5991AD | | | distributors 无法联系到经销商，请联系我们的销售办事处 | ||||||||||
| L5991D013TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
L5991AD13TR 批量生产
L5991D 批量生产
L5991AD 批量生产
L5991D013TR 批量生产