AIC1086 Datasheet, PDF (1/7 Pages) Analog Intergrations Corporation – 1.5A Low Dropout Positive Adjustable Regulator

AIC1086
1.5A Low Dropout Positive Adjustable Regulator
n ^FEATURES
l Dropout Voltage 1.3V at 1.5A 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.
n ^APPLICATIONS
l Post Regulator for Switching Supply.
l Battery Chargers.
l Constant-Current Regulators.
l PC Add-On Card.
n ^DESCRIPTION
The AIC1086 is a low dropout three terminal
regulator with 1.5A 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.
n ^{TYPICAL APPLICATION CIRCUIT}
VIN
3 _AIC1086 2
5V
VOUT
3.3V
C1 +
10µF
1 ADJ
VREF ^RF1
125Ω
1%
RF2
205Ω
+
C2
10µF
1%
Adjustable Voltage Regulator
V_REF=V_OUT - V_ADJ=1.25V (typ.)
V_OUT=V_REF x (1+RF2/RF1)+ I_ADJ x RF2
I_ADJ=55µA (typ.)
(1) C1 needed if device is far away from filter
capacitors.
(2) C2 required for stability.
VIN
5V
C1 +
10µF
AIC1086-33
GND
VOUT
3.3V
+
C2
10µF
Fixed Voltage Regulator
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1086-00 May 16, 00
TEL: [phone] FAX: [phone]
www.analog.com.tw
1