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AIC1747B

300mA, Low IQ, High PSRR LDO Regulators

FEATURES
  •  2.5V to 5.5V Input Voltage Range
  •  380mV @300mA Dropout Voltage
  •  Excellent Transient Response
  •  Stable with 1μF Ceramic Output Capacitor
  •  70dB PSRR at 1kHz
  •  Low 37μA Quiescent Current
  •  Low Shutdown Current: <1μA
  •  Output Accuracy: ±2%
  •  Fixed Output Voltage: 1.2V~3.3V (0.1V per
  • step)
  •  Current Limit Protection
  •  Thermal Shutdown
  •  Output Auto-Discharge in Shutdown
  •  RoHS Compliant and 100% Lead (Fb)-Free
  • Halogen-Free
APPLICATIONS
  •  Cellular Phones
  •  Bluetooth portable radios and Accessories
  •  Battery-Powered Equipment
  •  Laptop, Palmtops, Notebook Computer
  •  PDAs
  •  Digital still Camera and Video Recorders
DESCRIPTION
The AIC1747B is a 300mA, low-dropout (LDO)
linear regulator with fast transient response and
high PSRR. It offers high output accuracy, low
dropout voltage and low quiescent current as well
as fast start-up time. This regulator is based on a
CMOS process.
The AIC1747B is designed to work with low-ESR
ceramic capacitors, reducing the amount of the
PCB area necessary for power applications. Only
a 1μF ceramic output capacitor can make the
device stable over the whole load range current
(0mA to 300mA).
The other key features of AIC1747B include overcurrent
protection and thermal shutdown. The
AIC1747B is packaged in DFN 4L 1×1 package.
TYPICAL APPLICATION


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