3.0 A, 15 V, Step-Down Switching Regulator

The JM2576 series of regulators are monolithic integrated circuits ideally suited for easy and convenient design of a step–down switching regulator (buck converter). All circuits of this series are capable of driving a 3.0 A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version.

These regulators were designed to minimize the number of external components to simplify the power supply design. Standard series of inductors optimized for use with the JM2576 are offered by several different inductor manufacturers. Since the JM2576 converter is a switch– mode power supply, its efficiency is significantly higher in comparison with popular three–terminal linear regulators,

This feature greatly simplifies the design of switch–mode power supplies. The JM2576 features include a guaranteed ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency (±2% over 0°C to 125°C). External shutdown is included, featuring 80 ㎂ (typical) standby current. The output switch includes cycle–by–cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

JM2576-xx

TO-220-5L

JM2576T

TO-263-5L

JM2576S

Pin connections

1. Vin

2. Output

3. Ground

4. Feedback

5. ON/OFF

· Guaranteed 3.0 A Output Current

· Wide Input Voltage Range

· Requires Only 4 External Components

· 52 kHz Fixed Frequency Internal Oscillator

· TTL Shutdown Capability, Low Power Standby Mode

· High Efficiency

· Uses Readily Available Standard Inductors

· Thermal Shutdown and Current Limit Protection

Applications

· Simple High–Efficiency Step–Down (Buck) Regulator

· Efficient Pre–Regulator for Linear Regulators

· On–Card Switching Regulators

· Positive to Negative Converter (Buck–Boost)

· Negative Step–Up Converters

· Power Supply for Battery Chargers

图片不供参考  可提供规格书

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Leven Cai 蔡明柱

深圳市奥伟斯科技有限公司

OWEIS ELECTRONICS Co., LIMITED.

址址:深圳市福田区深南中路3006号佳和华强大厦A座7楼701-703室

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E-Mail : leven@oweis-tech.com  

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