ST730MR STMicroelectronics

ST730 Datasheet 300 mA, 28 V low-dropout voltage regulator, with 5 A quiescent current Features Wide input voltage range : 2.5 V to 28 V Ultra-low quiescent current: typ. 5 A at no-load, 10 A max. across full temperature range, 1 A max. in shutdown High output voltage accuracy: 0.5% 25 C, 2.5% across temperature range SOT23-5L Output current up to 300 mA Fixed output voltage versions, starting from 1.2 V to 12 V with 100 mV step Adjustable voltage version, starting from 1.2 V to V - V IN DROP Stable with low ESR capacitors (0.47 F min.) Thermal shutdown protection Current limit and SOA protection -40 C to +125 C operating temperature range Applications Post regulation Electronic meters Smoke detectors / alarms Portable equipment Industrial application Maturity status link Description ST732 The ST730 is 300 mA LDO regulator, designed to be used in several medium voltage applications. Ultra-low quiescent current of 5 A makes it suitable for applications permanently connected to power supply/battery. This feature is also useful when electronic modules remain permanently turned on. The ST730 embeds protection functions, such as: current limit, short-circuit and thermal shutdown. The extended input voltage range, very low drop voltage and low quiescent current features make it suitable also for low power after-market automotive and consumer applications. DS13036 - Rev 4 - April 2021 www.st.com For further information contact your local STMicroelectronics sales office.ST730 Schematic diagram 1 Schematic diagram Figure 1. Block diagram - Fixed version V IN V OUT Bias generator OPAMP EN Enable Thermal protection Bandgap reference Current limit GND Figure 2. Block diagram - Adjustable version V IN V OUT Bias generator OPAMP EN Enable ADJ Thermal protection Bandgap reference Current limit GND DS13036 - Rev 4 page 2/23