L5986 is a high-voltage, high-current step-down switching regulator developed by STMicroelectronics. It utilizes a pulse-width modulation (PWM) control scheme to regulate the output voltage and maintain stable operation under varying load conditions.

Function: 2.5A, Step-down Switching Regulator

Package: VFQFPN8 3×3 mm, HSOP8 exposed pad Type

Manufacturer: STMicroelectronics

Image and Pinouts:

 

Description

The L5986 is a step-down switching regulator with a 3.0 A (min.) current limited embedded Power MOSFET, so it is ableto deliver up to 2.5 A current to the load depending on the application conditions. The input voltage can range from 2.9 V to 18 V, while the output voltage can be set starting from 0.6 V to VIN . Having a minimum input voltage of 2.9 V, the device is suitable also for a 3.3 V bus. Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator thatcan be externally adjusted up to 1 MHz. The QFN and the HSOP packages with an exposed pad allow reducing the RthJA down to
60 °C/W and 40 °C/W respectively.

Features

1. 2.5 A DC output current
2. 2.9 V to 18 V input voltage
3. Output voltage adjustable from 0.6 V
4. 250 kHz switching frequency, programmable up to 1 MHz
5. Internal soft-start and inhibit
6. Low dropout operation: 100% duty cycle
7. Voltage feedforward
8. Zero load current operation
9. Overcurrent and thermal protection

The regulator also incorporates a range of protection features, including overvoltage protection, overcurrent protection, and thermal shutdown. These protections help to ensure safe and reliable operation of the regulator and the devices it powers.

Other key features of the regulator include a low-dropout voltage, adjustable output voltage, and a wide operating temperature range.

Other data sheets are available within the file: L5986A, L5986ATR, L5986TR

L5986 Datasheet PDF Download

Part Number: LP2950

Function: Micropower Voltage Regulator

Package: TO92, DPAK, SOIC, DIP Type

Manufacturer: ON Semiconductor

Image and Pinouts:

 

Description

The LP2950 and LP2951 are micropower voltage regulators that are specifically designed to maintain proper regulation with an extremely low input−to−output voltage differential. These devices feature a very low quiescent bias current of 75 A and are capable of supplying output currents in excess of 100 mA. Internal current and thermal limiting protection is provided.

The LP2951 has three additional features. The first is the Error Output that can be used to signal external circuitry of an out of regulation condition, or as a microprocessor power−on reset. The
second feature allows the output voltage to be preset to 5.0 V, 3.3 V or 3.0 V output (depending on the version) or programmed from 1.25 V to 29 V.

It consists of a pinned out resistor divider along with direct access to the Error Amplifier feedback input. The third feature is a Shutdown input that allows a logic level signal to turn−off or turn−on the regulator output.

LP2951 Pinout

Features

1. Low Quiescent Bias Current of 75 uA

2. Low Input−to−Output Voltage Differential of 50 mV at 100 uA and 380 mV at 100 mA

3. 5.0 V, 3.3 V or 3.0 V ±0.5% Allows Use as a Regulator or Reference

4. Extremely Tight Line and Load Regulation

5. Requires Only a 1.0 uF Output Capacitor for Stability

6. Internal Current and Thermal Limiting

Other data sheets are available within the file: LP2950ACDT-3.0, LP2950ACDT-3.0RK, LP2950ACDT-5.0

LP2950 Datasheet PDF Download