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AS1376 Linear Regulator

1A, Low Input Voltage, Ultra low drop out voltage with Low Quiescent Current LDO

The AS1376 is a dual supply rail linear regulator designed to deliver 1A of load current while consuming only 67μA (typ) of ground current. In the typical post regulation application VBIAS is directly connected to the main input supply, (range 2.5V - 5.5V) and VIN is supplied by the output voltage of a host DC-DC Converter (range 0.7V - 4.5V).

Block diagram of the AS1376 Linear Regulator

Key Features

  • Less internal voltage losses and minimized self-heating
  • Supports a variety of low voltage end applications
  • Ideal as follower of a buck converter
  • Independent bias supply ensures more robustness due to heavy load changes
  • Supports a variety of high load applications

Key Benefits

  • Ultra-low dropout voltage: <120mV @ 1A load
  • Output voltage from 0.5V to 3.3V
  • Input voltage from 0.7V to 3.6V
  • Bias supply voltage from 2.5V to 5.5V
  • Maximum output current up to 1A

AS1376 Applications

  • Cordless & Mobile Phones
  • PDAs
  • Handheld Computers
  • MP3 Players
  • CD and DVD Players
  • Digital Cameras
  • Handheld and/or Battery Powered Devices

AS1376 Product Facts

Output [#] 1
Accuracy [%] ±1.5
Output current [mA] 1000
Feature ultra low dropout,
very low input/output voltage range
Output voltage [V] 0.5 to 3.3
Dropout voltage @ max current [mV] 105
Supply current [μA] 6.5 (Vin)
60 (Vbias)
Supply voltage [V] 0.7 to 3.6 (Vin)
2.5 to 5.5 (Vbias)
Package WL-CSP-6
TDFN-8 (2x2)