AIC1117A
1A Low Dropout Positive Regulator
FEATURES
DESCRIPTION
Dropout Voltage 1.3V at 1A Output Current. Fa...
AIC1117A
1A Low Dropout Positive
Regulator
FEATURES
DESCRIPTION
Dropout Voltage 1.3V at 1A Output Current. Fast Transient Response. Line Regulation, typical at 0.015%. Load Regulation, typical at 0.1% Current Limiting and Thermal Protection. Adjustable Output Voltage or Fixed at 1.8V, 2.5V
and 3.3V. Standard 3-Pin Power Packages.
APPLICATIONS
Active SCSI Terminators. Post
Regulators for Switching Supplies. Battery Chargers. PC Add-On Card.
TYPICAL APPLICATION CIRCUIT
The AIC1117A is a low dropout, three terminals
regulator designed to provide output current up to 1A. The device is available in an adjustable version and fixed output voltage of 1.8V, 2.5V and 3.3V. Dropout voltage of maximum of 1.5V is guaranteed at 1A output current. The quality of low dropout voltage and fast transient response make this device ideal for low voltage microprocessor applications. The AIC1117A requires output capacitance of a minimum of 10μF for stability. Built-in output current limiting and thermal limiting provide maximal protection to the AIC1117A against fault conditions.
VIN 5V
C1 + 10F
3 AIC1117A 2
VOUT 3.3V
1 ADJ
VREF RF1 125
1%
RF2 205
+ C2
10F
(Note1)
1%
VREF=VOUT - VADJ=1.25V (typ.) VOUT=VREF x (1+RF2/RF1)+ IADJ x RF2 IADJ=55A (typ.)
(1) C1 needed if device is far away from filter capacitors.
(2) C2 required for stability.
Adjustable Voltage
Regulator
VIN 5V
C1 + 10F
3
2 AIC1117A-33
1
GND
VOUT 3.3V
+ C2 10F
(Note1)
Fixed Voltag...