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LM2575IKV PDF预览

LM2575IKV

更新时间: 2024-11-10 05:05:59
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
15页 239K
描述
IC IC,SMPS CONTROLLER,VOLTAGE-MODE,BIPOLAR,ZIP,5PIN,PLASTIC, Switching Regulator or Controller

LM2575IKV 数据手册

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LM2575  
1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATOR  
www.ti.com  
SLVS569CJANUARY 2005REVISED JULY 2005  
FEATURES  
KC (TO-220) PACKAGE  
Fixed 3.3-V, 5-V, 12-V, and 15-V Options With  
(TOP VIEW)  
±5% Regulation (Max) Over Line, Load, and  
Temperature Conditions  
5
ON/OFF  
FEEDBACK  
GND  
4
3
2
1
Adjustable Option With a Range of 1.23 V to  
37 V and ±4% Regulation (Max) Over Line,  
Load, and Temperature Conditions  
OUTPUT  
V
IN  
Specified 1-A Output Current  
KV (TO-220 STAGGERED LEADS) PACKAGE  
Wide Input Voltage Range4.75 V to 40 V  
(TOP VIEW)  
(SIDE VIEW)  
Requires Only Four External Components  
(Fixed Versions) and Uses Readily Available  
Standard Inductors  
52-kHz (Typ) Fixed-Frequency Internal  
Oscillator  
5
ON/OFF  
FEEDBACK  
GND  
4
3
2
1
TTL Shutdown Capability With 50-µA (Typ)  
Standby Current  
OUTPUT  
V
IN  
High Efficiencyas High as 88% (Typ)  
Thermal Shutdown and Current-Limit  
Protection With Cycle-by-Cycle Current  
Limiting  
Pins 1, 3, 5  
Pins 2, 4  
KTG PACKAGE  
(TOP VIEW)  
APPLICATIONS  
Simple High-Efficiency Step-Down (Buck)  
Regulator  
Pre-Regulator for Linear Regulators  
On-Card Switching Regulators  
Positive-to-Negative Converter (Buck-Boost)  
ON/OFF  
FEEDBACK  
GND  
5
4
3
2
OUTPUT  
1
V
IN  
DESCRIPTION/ORDERING INFORMATION  
KTT (TO-263) PACKAGE  
(TOP VIEW)  
The LM2575 greatly simplifies the design of switching  
power supplies by conveniently providing all the  
active functions needed for a step-down (buck)  
switching regulator in an integrated circuit. Accepting  
a wide input voltage range and available in fixed  
output voltages of 3.3 V, 5 V, 12 V, 15 V, or an  
adjustable output version, the LM2575 has an  
integrated switch capable of delivering 1 A of load  
current, with excellent line and load regulation. The  
device also offers internal frequency compensation, a  
fixed-frequency oscillator, cycle-by-cycle current  
limiting, and thermal shutdown. In addition, a manual  
shutdown is available via an external ON/OFF pin.  
5
4
3
ON/OFF  
FEEDBACK  
GND  
2
1
OUTPUT  
V
IN  
N PACKAGE  
(TOP VIEW)  
NC  
NC  
V
IN  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
NC  
OUTPUT  
NC  
GND  
GND  
GND  
GND  
NC  
GND  
NC  
FB  
NC  
ON/OFF  
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.  
PowerFLEX is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2005, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  

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