STMicroelectronics Manuals

The MC34063A/E series is a monolithic control circuit delivering the main functions for DC/DC voltage converting. The device contains an internal temperature compensated reference, comparator, duty cycle controlled oscillator with an active current limit circuit, driver and high current output switch. Output voltage is adjustable through two external resistors with a 2 % reference accuracy. Employing a minimum number of external components the MC34063A/E devices series is designed for step-down, step-up and voltage- inverting applications.

This document introduces the characteristics of the L6561 product, including micro power start-up current, very low operating current, internal start-up timer, current sense filter on chip, disable function, 1% precision internal reference voltage, transition mode operation, symmetric output current.

ST662AB ST662AC DC-DC converter from 5 V to 12 V, 0.03 A for Flash memory programming supply

LM723 is a high precision voltage regulator with features including input voltage up to 40V, adjustable output voltage from 2 to 37V, positive or negative supply operation, series, shunt, switching or floating operation, output current up to 150mA without external pass transistor, adjustable current limiting, etc.

The TL431 and TL432 are programmable shunt voltage references with guaranteed temperature stability over the entire operating temperature range. The output voltage can be set to any value between 2.5 and 36 V with two external resistors. The TL431 and TL432 operate with a wide current range from 1 to 100 mA with a typical dynamic impedance of 0.22 Ω.

This file is about L4931ABxx L4931Cxx series. L4931ABxx L4931Cxx series are low voltage drop regulators with inhibit function. It has extremely low drop voltage (0.4V), extremely low quiescent current (typical 50μA in off mode, 600μA in on mode), output current up to 250mA, logic-controlled electronic shutdown, output voltage of 2.7;3.3;3.5;5;8;12V, automotive grade product: 2.7V, 3.3V, 3.5V VOUT only in SO-8 package, internal current and thermal limit, only 2.2µF for stability, available in ±1% (AB) or 2% (C) selection at 25°C, supply voltage rejection: 70dB typical for 5V version, temperature range: -40 to 125°C.

The KFxxB series is a very low dropout regulator from STMicroelectronics, available in SO-8 and DPAK packages. It has a wide range of output voltages from 1.5V to 8V and can output up to 500mA. It has very low static current and switching losses, making it suitable for low noise, low power applications. It can also be used in battery powered systems.

The UC384xB family of control ICs provides the nec- essary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count.

SG2525A and SG3525A are regulating pulse width modulator integrated circuits. They operate at a voltage range of 8V to 35V, with a 5.1V reference voltage trimmed to ±1%. The oscillator range is from 100Hz to 500kHz. They feature adjustable deadtime control, internal soft-start, pulse-by-pulse shutdown, and other characteristics.

The LM217M/LM317M are monolithic integrated circuits in TO-220 and DPAK packages intended for use as positive adjustable voltage regulators. They are designed to supply until 500 mA of load current with an output voltage adjustable over a 1.2 to 37 V range.

LM138 - LM238 - LM338 Three-terminal 5 A adjustable voltage regulators

The LK115XX series is a type of very low drop regulator with very low dropout voltage and quiescent current, suitable for low noise, low power applications and battery powered systems.

This document describes the features and characteristics of a product. It is a very low dropout voltage regulator with an inhibit function. It has very low quiescent current and high output current, making it suitable for low-noise low-power applications and battery-powered systems.