Datasheet > LM2577

LM2577

更新时间： 2024-11-16 02:58:43

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德州仪器 - TI		/
页数	文件大小	规格书
42页	4709K
描述
SIMPLE SWITCHERÂ® Step-Up Voltage Regulator

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LM2577 数据手册

LM1577, LM2577

www.ti.com

SNOS658D –JUNE 1999–REVISED APRIL 2013

LM1577/LM2577 SIMPLE SWITCHER Step-Up Voltage Regulator

Check for Samples: LM1577, LM2577

FEATURES

DESCRIPTION

The LM1577/LM2577 are monolithic integrated

•

Requires Few External Components

circuits that provide all of the power and control

functions for step-up (boost), flyback, and forward

converter switching regulators. The device is

available in three different output voltage versions:

12V, 15V, and adjustable.

•

NPN Output Switches 3.0A, can Stand off 65V

Wide Input Voltage Range: 3.5V to 40V

•

Current-mode Operation for Improved

Transient Response, Line Regulation, and

Current Limit

Requiring

minimum number of external

components, these regulators are cost effective, and

simple to use. Listed in this data sheet are a family of

standard inductors and flyback transformers designed

to work with these switching regulators.

•

52 kHz Internal Oscillator

Soft-start Function Reduces In-rush Current

During Start-up

•

Output Switch Protected by Current Limit,

Under-voltage Lockout, and Thermal

Shutdown

Included on the chip is a 3.0A NPN switch and its

associated protection circuitry, consisting of current

and thermal limiting, and undervoltage lockout. Other

features include a 52 kHz fixed-frequency oscillator

that requires no external components, a soft start

mode to reduce in-rush current during start-up, and

current mode control for improved rejection of input

voltage and output load transients.

TYPICAL APPLICATIONS

•

Simple Boost Regulator

Flyback and Forward Regulators

Multiple-output Regulator

Connection Diagrams

Figure 1. 5-Lead (Straight Leads) TO-220 (T) – Top

Figure 2. 5-Lead (Bent, Staggered Leads) TO-220

(T) – Top View

View

See Package Number KC

See Package Number NDH0005D

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

SIMPLE SWITCHER is a registered trademark of Texas Instruments.

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...42

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与LM2577相关器件

型号	品牌	获取价格	描述	数据表
LM2577-12	NSC	获取价格	SIMPLE SWITCHER Step-Up Voltage Regulator
LM2577-15	NSC	获取价格	SIMPLE SWITCHER Step-Up Voltage Regulator
LM2577-ADJ	NSC	获取价格	SIMPLE SWITCHER Step-Up Voltage Regulator
LM2577-ADJMDC	NSC	获取价格	暂无描述
LM2577-ADJMWC	TI	获取价格	暂无描述
LM2577M-12	NSC	获取价格	SIMPLE SWITCHER Step-Up Voltage Regulator
LM2577M-15	NSC	获取价格	SIMPLE SWITCHER Step-Up Voltage Regulator
LM2577M-15/NOPB	TI	获取价格	6A SWITCHING REGULATOR, 62kHz SWITCHING FREQ-MAX, PDSO24, 0.300 INCH, SO-24
LM2577MADJ	TI	获取价格	6A SWITCHING REGULATOR, 62kHz SWITCHING FREQ-MAX, PDSO24, 0.300 INCH, PLASTIC, SOP-16
LM2577M-ADJ	TI	获取价格	SIMPLE SWITCHERÂ® Step-Up Voltage Regulator

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