參數(shù)資料
型號： LC5521D
元件分類： 穩(wěn)壓器
英文描述： 2.5 A POWER FACTOR CONTROLLER, 18 kHz SWITCHING FREQ-MAX, DIP7
封裝： DIP-8/7
文件頁數(shù)： 12/40頁
文件大?。?/td> 888K
代理商： LC5521D
2
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
28106.02
Table of Contents
General Specifications
1
Block Diagrams and Pin Descriptions
3
Package Drawings
5
Electrical Characteristics
9
Application Circuit Examples
15
Operation Description
17
On-Width Control Operation
17
Startup Operation
19
Operation Modes at Startup
21
Soft-Start Function
21
Quasi-Resonant Operation and Bottom-On Timing
22
Latch Function
25
Overvoltage Protection (OVP)
26
Overload Protection (OLP)
30
Overcurrent Protection (OCP)
32
Input Compensation Function for Overcurrent Protection
33
OCP Threshold Voltage with and without the OCP Input
Compensation Circuit
33
Thermal Shutdown Protection
35
Maximum On-Time Limiting Function
35
Design Considerations
35
Peripheral Components
35
Transformer Design
35
Trace and Component Layout Design
36
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