AIC1117A

1A Low Dropout Positive Adjustable Regulator

Analog Integrations Corporation

4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC

www.analog.com.tw

DS-1117A-00

May 21, 01

TEL: 886-3-5772500

FAX: 886-3-5772510

1

l

Dropout Voltage 1.3V at 1A Output Current.

l

Fast Transient Response.

l

Line Regulation typically at 0.015%.

l

Load Regulation typically at 0.1%.

l

Internal Thermal and Current Limiting.

l

Adjustable Output Voltage or Fixed 2.85V, 3.3V,

5V.

l

Standard 3-Pin Power Packages.

l

Post Regulator for Switching Supply.

l

Active SCSI Termination.

l

Battery Chargers.

l

Constant-Current Regulators.

l

Motherboard Clock Supplies.

The AIC1117A is a low dropout three terminal

regulator with 1A output current capability. The

output voltage is adjustable with the use of a

resistor divider or fixed 2.85V, 3.3V, 5V. Dropout

is guaranteed at a maximum of 1.5V 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.

C2

10µF

3.3V

5V

+

+

RF2

205Ω

1%

ADJ

AIC1117A

C1

10µF

2

3

1

RF1

125Ω

1%

V

V

I

(1) C1 needed if device is far away from filter

capacitors.

(2) C2 required for stability.

Adjustable Voltage Regulator

C2

10µF

3.3V

5V

+

+

GND

C1

10µF

AIC1117A-33

Fixed Voltage Regulator