The LM2576 5V High-Voltage Step-Down Regulator is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator. This device features a 5V out- put capable of driving a 3A load with excellent line and load regulation. Requiring a minimum number of external components, this regulator is simple to use and includes internal frequency compensation and a fixed-frequency oscillator.
The LM2576 offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in many cases, no heat sink is required. This feature greatly simplifies the design of switch-mode power supplies.
LM2576 Pinout
LM2576 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | Vin | Input Voltage Pin |
| 2 | OUT | Output Pin |
| 3 | GND | Ground Pin |
| 4 | FB | FeedBack Pin |
| 5 | ON’/OFF | Complement On/Off Pin |
LM2576 Key Features
- 5V output, t3% max over line and load conditions
- Guaranteed 3A output current
- Wide input voltage range, 7V to 40V
- Requires only 4 external components
- 52 kHz fixed frequency internal oscillator
- Low power standby mode, la typically <200 uA 80% Efficiency
- Uses readily available standard inductors
- Thermal shutdown and current limit protection
Application
- Simple high-efficiency step-down (buck) regulator
- Efficient pre-regulator for linear regulators
- On-card switching regulators
- Positive to Negative converter (Inverting, Buck-Boost)
- Isolated Fly back Converter using minimum number of external components
- Negative Boost Converter
You can download this datasheet for LM2576 5V High-Voltage Step-Down Regulator – Datasheet from the link given below:
