L5987 is a 3A step-down switching regulator from STMicroelectronics. It features an adjustable output voltage, a 2.9V to 18V input voltage range, and soft-start and inhibit functions. It is suitable for use in consumer, industrial, networking, and computer applications.
The L5987 is a step-down switching regulator featuring a 3.5A current-limited embedded power MOSFET, allowing it to deliver up to 3A to the load. It operates with an input voltage range of 2.9V to 18V and an adjustable output voltage from 0.6V to the input voltage. The device includes an internal 250kHz oscillator that can be externally adjusted up to 1MHz and supports low dropout operation with a 100% duty cycle.
| Output current | 3 A |
|---|---|
| Input voltage range | 2.9 V to 18 V |
| Output voltage range | 0.6 V to VIN |
| Switching frequency | 250 kHz to 1 MHz |
| Maximum limiting current | 3.5 A |
| Thermal resistance (VFQFPN) | 60 °C/W |
| Thermal resistance (HSOP) | 40 °C/W |
The device has an internal 250 kHz switching frequency that can be externally adjusted up to 1 MHz.
The input voltage can range from 2.9 V to 18 V.
The device is available in VFQFPN3x3-8L and HSOP8 packages.