STMicroelectronics LD57100 Ultra-Low Dropout Voltage Regulator

STMicroelectronics LD57100 Ultra-Low Dropout Voltage Regulator is a high-accuracy voltage regulator, which provides 1A of current. The regulator is equipped with an NMOS pass transistor, whose gate is biased by a dedicated pin, thus allowing ultra-low drop performance even at very low input voltages. It is available in a Flip Chip6 (0.8mm x 1.2mm) package, maximizing space-saving. This device is stabilized with a small ceramic capacitor on the output. The ultra-low drop, low quiescent current, and short-circuit protection makeSTMicroelectronics the LD57100 suitable for low-power battery-operated applications. An enable logic control function puts the LD57100 in shutdown mode, allowing a total current consumption lower than 0.1µA. Thermal protection is also included on the device.

Features

  • VOUT to 5.5V input voltage
  • 3.0V to 5.5V input bias supply pin
  • 40mV typical at 1A load low-dropout voltage
  • 35μA typical at no load low ground current
  • Output voltage tolerance
    • ±1% all over the temperature range
    • ±0.5% at 25°C
  • 1A guaranteed output current
  • 50mV output voltage step available from 0.4V to 1.8V
  • 100mV output voltage step available from 1.9V to 3.6V
  • The adjustable version from 0.5V to 3.0V
  • Logic-controlled electronic shutdown
  • Internal current limit
  • Thermal shutdown
  • Output active discharge function
  • Flip Chip6 (0.8mm x 1.2mm) package
  • -40°C to +85°C temperature range

Applications

  • Smartphones
  • Cameras
  • Low-voltage, low-noise post regulation

Block Diagrams

Đã phát hành: 2019-12-04 | Đã cập nhật: 2024-04-23