The LM22676 3A SIMPLE SWITCHER® is a step-down voltage regulator with precision enable function. It has a wide input voltage range of 4.5V to 42V and can output 5V or 1.285V. It has internal compensation voltage mode control, high stability, can use low ESR ceramic capacitors, and has 120mΩ N-channel MOSFET TO-263 THIN package and 100mΩ N-channel MOSFET PSOP-8 package. It has ±1.5% feedback reference accuracy and a switching clock frequency of 500kHz.
The LM22676 series provides a monolithic step‑down (buck) regulator capable of delivering up to 3 A with excellent line and load regulation. It features an internally compensated voltage‑mode control, a low‑ESR ceramic capacitor‑stable design, and a precision enable pin for easy power‑down control.
Typical applications include industrial control, telecom and datacom systems, embedded systems, and automotive telematics. The device is offered in TO‑263 THIN and PSOP‑8 packages with exposed pads for efficient thermal dissipation.
| Input voltage range | 4.5 V to 42 V |
|---|---|
| Maximum output current | 3 A |
| Switching frequency | 500 kHz (fixed) |
| Efficiency | >90 % |
| Precision enable pin voltage threshold | 1.3 V to 1.9 V |
| Quiescent current (standby) | 25 pA (typical at 12 V input) |
| Thermal shutdown temperature | 150 °C |
The LM22676 operates from 4.5 V up to 42 V input.
The regulator uses a fixed 500 kHz switching frequency.
Typical efficiency exceeds 90 % thanks to the low‑ON‑resistance N‑channel MOSFET.