LM2575 - 1A 简单步降开关稳压器，可调节

LM2575是TI德州仪器公司的一款转换器（集成开关）产品，LM2575是1A 简单步降开关稳压器，可调节，本站介绍了LM2575的封装应用图解、特点和优点、功能等，并给出了与LM2575相关的TI元器件型号供参考。

LM2575 - 1A 简单步降开关稳压器，可调节 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品特性

Adjustable With a Range of 1.23 V to 37 V and ±4% Regulation (Max) Over Line, Load, and Temperature Conditions
Specified 1-A Output Current
Wide Input Voltage Range 4.75 V to 40 V
Uses Readily Available Standard Inductors
52-kHz (Typical) Fixed-Frequency Internal Oscillator
TTL Shutdown Capability With 50-μA (Typical) Standby Current
High Efficiency…as High as 88% (Typical)
Thermal Shutdown and Current-Limit Protection With Cycle-by-Cycle Current Limiting
For the Full Offering of Voltages (Including Fixed-Output Options) and Packages (Including TO-263), See TL2575 Data Sheet, SLVS638

产品应用

Simple High-Efficiency Step-Down (Buck) Regulator
Pre-Regulator for Linear Regulators
On-Card Switching Regulators
Positive-to-Negative Converter (Buck-Boost)

产品说明

The LM2575 device 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 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 through an external ON/OFF pin.

The LM2575 represents a superior alternative to popular three-terminal linear regulators. Due to its high efficiency, it significantly reduces the size of the heat sink and, in many cases, no heat sink is required. Optimized for use with standard series of inductors available from several different manufacturers, the LM2575 greatly simplifies the design of switch-mode power supplies by requiring a minimal addition of only four to six external components for operation.

The LM2575 is characterized for operation over the virtual junction temperature range of –40°C to 125°C.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LM2575N	PDIP (16)	19.30 mm × 6.35 mm

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