LM2596 SIMPLE SWITCHER 3A Step-Down Voltage Regulator
3A step-down switching voltage regulator operating at 150 kHz switching frequency, widely available as TO-220-5 IC and adjustable DC-DC buck converter module.
Aliase:LM2596S, LM2596-5.0, LM2596-ADJ, DC-DC Buck Converter
4-Terminal DC-DC Buck Converter Module
4 Pins
Pin-Tabelle4
| Pin | Signal / Name | Typ | Alternative Funktionen |
|---|---|---|---|
| 1 | IN+ | Power | Input Voltage Positive (+4.5V to +40V DC) |
| 2 | IN- | Ground | Input Ground Reference (0V) |
| 3 | OUT+ | Power | Regulated Step-Down Output Voltage (+1.25V to +35V, max 3A) |
| 4 | OUT- | Ground | Output Ground Reference (Common with IN-) |
TO-220-5 Pinout
5 Pins
Pin-Tabelle5
| Pin | Signal / Name | Typ | Alternative Funktionen |
|---|---|---|---|
| 1 | VIN | Power | Unregulated Supply Input Voltage (4.5V to 40V) |
| 2 | OUTPUT | Power | Internal Switch Output (connected to inductor/diode) |
| 3 | GND | Ground | Ground Reference (0V) |
| 4 | FEEDBACK | Analog | Feedback Voltage Input (1.23V reference threshold) |
| 5 | ~ON/OFF | Digital | Shutdown Input (Active High — LOW = regulator ON, HIGH = standby ~80µA; tie to GND for always-on operation) |