STMicroelectronics Manuals

The TS4431 is a four-terminal device dedicated to low voltage Switch Mode Power Supplies (SMPS). It integrates a 1.224V voltage reference, an amplifier, and an open collector output transistor in a single package. The TS4431’s operating mode is similar to the well-known standard voltage reference, the TL431. It maintains the desired feedback voltage at the REF pin in a closed loop configuration by sinking a current proportional to the error voltage at the REF pin. TS4431 features an open collector transistor with an ultra-low saturation voltage, allowing it to be used in series with the optocoupler in an SMPS architecture to regulate low voltage SMPS.

The document describes the features of the TSM107 triple operational amplifier and voltage reference. It has medium bandwidth, large output voltage swing, input common mode voltage range that includes ground, and a wide power supply range.

This document describes the features and characteristics of a 5-pin supervisor product named STM6321, STM6322, STM6821, STM6822, STM6823, STM6824, STM6825, including precision VCC monitoring, reset outputs, watchdog timer, manual reset input, etc.

L6928 is a high efficiency monolithic synchronous step down regulator featuring extremely low quiescent current, 2V to 5.5V input voltage range, up to 95% efficiency, as well as selectable low noise/low consumption mode.

LDS3985xx is a low dropout, low noise, BiCMOS 300 mA voltage regulator for use with very low ESR output capacitors.

ST1S03 is a step down DC-DC converter optimized for powering low-voltage digital core in HDD applications and, generally, to replace the high current linear solution when the power dissipation may cause an high heating of the application environment. It provides up to 1.5 A over an input voltage range of 3 V to 16 V. An high switching frequency (1.5 MHz) allows the use of tiny surface-mount components: as well as the resistor divider to set the output voltage value, only an inductor, a schottky diode and two capacitors are required. Besides, a low output ripple is guaranteed by the current mode PWM topology and by the use of low ESR SMD ceramic capacitors. The device is thermal protected and current limited to prevent damages due to accidental short circuit.

L6563/L6563A are ST's advanced transition-mode PFC controllers, featuring very precise adjustable output overvoltage protection, tracking boost function, protection against feedback loop failure (Latched shutdown), interface for cascaded converter's PWM controller, input voltage feedforward (1/V2), inductor saturation detection (L6563 only), remote ON/OFF control, low (≤ 90µA) start-up current, 5mA max. quiescent current, 1.5% (@ TJ = 25°C) internal reference voltage, -600/+800 mA totem pole gate driver with active pull-down during UVLO.

This document describes the features of the LD29080xx series, including very low dropout voltage, high output current, fixed and adjustable output voltage, internal current and thermal limit, etc. These products are suitable for high current loads and low dropout voltage requirements.

TSM1014 is a highly integrated solution for SMPS applications requiring CV (constant voltage) and CC (constant current) mode. It features constant voltage and constant current control, low consumption, low voltage operation, low external component count, current sink output stage, easy compensation, high ac mains voltage rejection, and 2kV ESD protection.

The L6997S is a step-down controller for low voltage operations. It is able to regulate an output voltage as low as 0.6V with an input voltage range of 1V to 35V. The device features constant on time topology, very fast load transients, 0.6V, ±1% reference voltage, selectable sinking mode, lossless current limit, remote sensing, OVP, UVP latched protections, 600µA typical quiescent current, power good and OVP signals, and pulse skipping at light loads.

STM690A, STM692A, STM703, STM704, STM802, STM805, STM817/8/9 are 5V supervisors with features such as automatic battery switchover and low power consumption.

STM705, STM706 STM707, STM708, STM813L 5 V supervisor is a voltage monitor chip produced by ST company. Its features are wide voltage range, working voltage is 5V, and it still ensures RST output when the voltage drops to 1.0V. It is suitable for industrial grade applications.

This datasheet provides detailed information about STM690, STM704, STM795, STM802, STM804, STM805, STM806 3V supervisor with battery switchover.