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UC2577-ADJ

更新时间： 2024-09-15 22:17:35

品牌	Logo	应用领域
德州仪器 - TI		稳压器
页数	文件大小	规格书
8页	181K
描述
Simple Step-Up Voltage Regulator

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中文翻译

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数据手册

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UC2577-ADJ 数据手册

UC2577-ADJ

Simple Step-Up Voltage Regulator

FEATURES

DESCRIPTION

•

Requires Few External Components

The UC2577-ADJ device provides all the active functions neces-

sary to implement step-up (boost), flyback, and forward converter

switching regulators. Requiring only a few components, these sim-

ple regulators efficiently provide up to 60V as a step-up regulator,

and even higher voltages as a flyback or forward converter regula-

tor.

NPN Output Switches 3.0A, 65V(max)

Extended Input Voltage Range: 3.0V to 40V

Current Mode Operation for Improved

Transient Response, Line Regulation, and

Current Limiting

The UC2577-ADJ features a wide input voltage range of 3.0V to

40V and an adjustable output voltage. An on-chip 3.0A NPN switch

is included with undervoltage lockout, thermal protection circuitry,

and current limiting, as well as soft start mode operation to reduce

current during startup. Other features include a 52kHz fixed fre-

quency on-chip oscillator with no external components and current

mode control for better line and load regulation.

•

Soft Start Function Provides Controlled

Startup

•

52kHz Internal Oscillator

Output Switch Protected by Current Limit,

Undervoltage Lockout and Thermal

Shutdown

A standard series of inductors and capacitors are available from

several manufacturers optimized for use with these regulators and

are listed in this data sheet.

•

Improved Replacement for LM2577-ADJ

Series

TYPICAL APPLICATIONS

CONNECTION DIAGRAM

•

Simple Boost and Flyback Converters

5-Pin TO-220 (Top View)

T Package

•

SEPIC Topology Permits Input Voltage to

be Higher or Lower than Output Voltage

•

Transformer Coupled Forward Regulators

Multiple Output Designs

Also available in TO-263 Package (TD).

BLOCK DIAGRAM

UDG-94034

3/97

12 3 4 5 6 7 8

中文翻译

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与UC2577-ADJ相关器件

型号	品牌	获取价格	描述	数据表
UC2577D-12	TI	获取价格	6A SWITCHING REGULATOR, 62kHz SWITCHING FREQ-MAX, PSSO5, PLASTIC, TO-263, 5 PIN
UC2577D-15	TI	获取价格	6A SWITCHING REGULATOR, 62kHz SWITCHING FREQ-MAX, PSSO5, PLASTIC, TO-263, 5 PIN
UC2577T-12	ETC	获取价格	Current-Mode SMPS Controller
UC2577T-15	TI	获取价格	6A SWITCHING REGULATOR, 52kHz SWITCHING FREQ-MAX, PSFM5
UC2577T-ADJ	TI	获取价格	Simple Step-Up Voltage Regulator
UC2577TD-12	ETC	获取价格	Current-Mode SMPS Controller
UC2577TD-15	ETC	获取价格	Current-Mode SMPS Controller
UC2577TD-ADJ	TI	获取价格	Simple Step-Up Voltage Regulator
UC2577TDK-ADJG3	TI	获取价格	6A SWITCHING REGULATOR, 62kHz SWITCHING FREQ-MAX, PSSO5, GREEN, PLASTIC, TO-263, 5 PIN
UC2577TDTR-ADJ	TI	获取价格	6A SWITCHING REGULATOR, 52kHz SWITCHING FREQ-MAX, PSSO5