LM2596: Buck Regulator, Switching, 3.0 A
The LM2596 series of Buck Switching Regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. Requiring a minimum number of external components, these Buck Switching Regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator. The LM2596 series operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with several different lead bend options, and a 5-lead D2PAK surface mount package. A standard series of inductors are available from several different manufacturers optimized for use with the LM2596 series. This feature greatly simplifies the design of switch-mode power supplies.Other features include a guaranteed +/-4% tolerance on output voltage under specified input voltage and output load conditions, and +/-15% on the oscillator frequency. External shutdown is included, featuring typically 80 µA standby current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault conditions. See LM2595 for 1.0A and LM2594 for 0.5A.
特性- Adjustable output voltage range, 1.2V to 37V +/-4% max over line and load conditions
- Available in TO-220 and D2PAK packages
- Guaranteed 3A output load current
- Input voltage range up to 40V
- Excellent line and load regulation specifications
- 150 kHz fixed frequency internal oscillator
- TTL shutdown capability
- Low power standby mode, Iq typically 80 µA
- Uses readily available standard inductors
- Thermal shutdown and current limit
| 优势- Flexible to configure for different output voltages and applications
- Different mounting options
- High power designs
- Can be used with several input voltage supplies (+12V, +24V, +36V)
- Provides a stable power supply
- No external component required to set frequency
- Easy to implement low power modes
- Power saving mode
- Quick and easy implementation
- Additional protection against faults
|
应用- Simple high-efficiency step-down (buck) regulator
- On-card switching regulators
- Positive to negative converter
| 终端产品 |
数据表 (1)
封装图纸 (3)
评估板文档 (8)
评估板与开发工具
| 产品 | 状况 | Compliance | 简短说明 |
|---|
| LM2596ADPBCKGEVB | Active | Pb-free | Step-Down Switching Regulator Evaluation Board |
| LM2596ATPBCKGEVB | Active | Pb-free | Step-Down Switching Regulator Evaluation Board |
产品订购型号
| 产品 | 状况 | Compliance | 封装 | MSL* | 容器 | 预算价格 (1千个数量的单价） |
|---|
| LM2596DSADJG | Active | Pb-free
Halide free | D2PAK-5 | 936A-02 | 1 | Tube | 50 | $1.9333 |
| LM2596DSADJR4G | Active | Pb-free
Halide free | D2PAK-5 | 936A-02 | 1 | Tape and Reel | 800 | $1.9333 |
| LM2596TADJG | Last Shipments | Pb-free
Halide free | TO-220-5 | 314D-04 | NA | Tube | 50 | |
| LM2596TVADJG | Active | Pb-free
Halide free | TO-220-5 | 314B-05 | NA | Tube | 50 | $1.8666 |
订购产品技术参数
| Product | Topology | Control Mode | VCC Min (V) | VCC Max (V) | VO Typ (V) | IO Typ (A) | Efficiency (%) | fSW Typ (kHz) |
|---|
| LM2596DSADJG | Step-Down | Voltage Mode | 4.5 | 40 | 1.25 to 37 | 3 | 85 | 150 |
| LM2596DSADJR4G | Step-Down | Voltage Mode | 4.5 | 40 | 1.25 to 37 | 3 | 85 | 150 |
| LM2596TVADJG | Step-Down | Voltage Mode | 4.5 | 40 | 1.25 to 37 | 3 | 85 | 150 |
