AIC1084:也是直流电源变换器,用于将5V输入转变为3.3V的直流输出
特性:
Dropout Voltage 1.3V at 5A Output Current.
Fast Transient Response.
Line Regulation typically at 0.015%.
Load Regulation typically at 0.1%.
Internal Thermal and Current Limiting.
Adjustable Output Voltage or Fixed 1.5V, 1.8V,3.3V.
Standard 3-Pin Power Packages.

用途:
Mother Board I/O Power Supplies.
Microprocessor Power Supplies.
High Current Regulator.
Post Regulator for Switching Supply.

描述:
The AIC1084 is a low dropout three terminal regulator with 5A output current capability. The output voltage is adjustable with the use of a resistor divider or fixed 1.5V, 1.8V, and 3.3V. Dropout is guaranteed at a maximum of 1.4V at maximum output current. Its low dropout voltage and fast transient response make it ideal for low voltage microprocessor applications. Internal current and thermal limiting provides protection against any overload condition that would create excessive junction temperatures.

典型应用电路:

VREF=VOUT - VADJ=1.25V (typ.)
VOUT=VREF x (1+RF2/RF1)+ IADJ x RF2
IADJ=55μA (typ.)
(1) C1 needed if device is far away from filter
capacitors.
(2) C2 required for stability.

完整的型号是: AIC1084-ABCD
AB：OUTPUT VOLTAGE DEFAULT: ADJ. 15: 1.5V 18: 1.8V 33: 3.3V
C：TEMPERATURE RANGE C: 0°C~70°C
D：PACKAGING TYPE E: TO-252 M: TO-263 T: TO-220

资料下载:

http://pdf.18ic.com/datasheet/analog/power/aic1084/aic1084.pdf