SS6117AG Datasheet, PDF (1/7 Pages) Silicon Standard Corp. – 1A Low-Dropout Positive Regulator

SS6117AG
1A Low-Dropout Positive Regulator
FEATURES
Dropout voltage 1.3V at 1A output current.
Fast transient response.
Line regulation typically at 0.015%.
Load regulation typically at 0.1%.
Current-limiting and thermal protection.
Adjustable output voltage or fixed at 1.8V, 2.5V,
2.85V, 3.3V, 5V.
Pb-free; RoHS-compliant packages
APPLICATIONS
Active SCSI termination.
Battery chargers.
Constant-current regulators.
Post regulator for switching supplies.
TYPICAL APPLICATION CIRCUIT
3 SS6117AG 2
VIN
5V
VOUT
3.3V
1 ADJ V_{REF RF1}
C1 +
10µF
125Ω ₊
1%
RF2
C2
205Ω
10µF
1%
Adjustable Voltage Regulator
3 _SS6117A-33G ²
V_IN
5V
1
C1 ⁺
10µF
GND
V_OUT
3.3V
+
C2
10µF
DESCRIPTION
The SS6117AG 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 at 1.8V, 2.5V, 2.85V, 3.3V,
or 5V. Dropout voltage is guaranteed to be a
maximum of 1.5V at the maximum output
current. The low dropout voltage and fast transient
response make this device ideal for low voltage
microprocessor applications. The current-limiting
and thermal protection reduce the risk that an
overload condition might create excessive junction
temperatures.
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 is needed if the device is mounted
far from the filter capacitors.
(2) C2 is required for stability.
Fixed Voltage Regulator
8/16/2006 Rev.3.01
www.SiliconStandard.com
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