STMicroelectronics ST732 28V Low-Dropout Regulators

STMicroelectronics ST732 28V Low-Dropout (LDO) Regulators feature an ultra-low 5µA quiescent current (IQ), making them ideal for applications permanently connected to a power supply or battery. The low IQ is also useful for electronic modules that remain permanently on. The ST732 features integrated protection functions, including current limit, short-circuit, and thermal shutdown. The extended input voltage range, very low drop voltage, and low quiescent current of these devices make them suitable for low power after-market automotive and consumer applications.

Features

  • Wide 2.5V to 28.0V input voltage range
  • Ultra-low quiescent current
    • 5µA typical at no-load
    • 10µA maximum across the full temperature range
  • ±2% output voltage accuracy
  • Output current up to 300mA
  • Fixed output voltage versions, starting from 1.2V in 100mV steps
  • Stable with low ESR capacitors (0.47µF minimum)
  • Thermal shutdown protection
  • Current limit protection
  • -40°C to +125°C operating temperature range
  • SOT23-5L package

Applications

  • Post regulation
  • Electronic meters
  • Smoke detectors and alarms
  • Portable equipment
  • Industrial applications

Block Diagram

Block Diagram - STMicroelectronics ST732 28V Low-Dropout Regulators

Typical Application Circuit

STMicroelectronics ST732 28V Low-Dropout Regulators

STMicroelectronics ST732 28V Low-Dropout Regulators