The LM2599 regulator is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. The device is available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version.
This switching regulator is similar to the LM2596, with additional supervisory and performance features added. Requiring a minimum number of external components, this regulator is simple to use and includes internal frequency compensation†, improved line and load specifications, a fixed-frequency oscillator, Shutdown/Soft-start, error flag delay, and an error flag output.
LM2599 Pinout
LM2599 Pin Configuration
| PIN No | Pin Name | Description |
|---|---|---|
| 1 | Vin | Input Voltage Pin |
| 2 | OUTPUT | Output Pin |
| 3 | FLAG | Flag Pin |
| 4 | GND | Ground Pin |
| 5 | DELAY | Delay Pin |
| 6 | FB | FeedBack Pin |
| 7 | SD’/SS | Complement Of Shutdown/Soft Start Pin |
LM2599 Key Features
- Input voltage range up to 40V
- 150 kHz fixed frequency internal oscillator
- Shutdown/Soft-start
- Out of regulation error flag
- Error output delay
- Low power standby mode, IQ typically 80 µA
- High 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
You can download this datasheet for LM2599 Adjustable 3A Step-Down Voltage Regulator – Datasheet from the link given below:
