LM2594M-ADJ/NOPB Texas Instruments 开关稳压器 150KHZ 0.5A STEP- DOWN VLTG REG

1 Features

1• 3.3-V, 5-V, 12-V, and Adjustable Output Versions

• Adjustable Version Output Voltage Range: 1.2 V

to 37 V (57 V for the HV Version), ±4% Maximum

Over Line and Load Conditions

• Available in 8-Pin Surface-Mount SOIC and 8-Pin

PDIP Packages

• Ensured 0.5-A Output Current

• Input Voltage Range up to 60 V

• Requires Only 4 External Components

• 150-kHz Fixed-Frequency Internal Oscillator

• TTL Shutdown Capability

2 Applications • Simple High-Efficiency Step-Down (Buck) Regulator • Efficient Preregulator for Linear Regulators • On-Card Switching Regulators • Positive-to-Negative Convertor
3 Description The LM2594xx series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version, and are packaged in a 8-p