S1117 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – 1.0A Adjustable LDO Linear Regulator

PRELIMINARY
S1117
Features
1.0A Adjustable LDO Linear Regulator
adjustable version.
Space saving SMD types of SOT-223 and D-Pak(TO-252)
Symbol
1.1V Drop-out Voltage
1.0A Output Current
Current Limiting and Thermal protection
Over Current Protection.
Ouput trimmed to 2% Tolerance
Fast Transient Response
General Description
The S1117 is a series of low dropout voltage regulators which can pro-
vide up to 1A of output current. On chip precision trimming adjusts the
refernce/output voltage to within · 2%. Current limit is also trimmed to
ensure specified output current and controlled short-circuit current.
The S1117 series is available in SOT-223 and DPAK power packages.
A minimum of 10uF tantalum capacitor is required at the output to
improve the transient response and stability.
DPAK
SOT-223
Applications
Post Regulator for Sitching DC/DC Converter
High Efficiency Linear Regulator
Battery Chargers
PC Add on Card
Motherboard clock supplies
Absolute Maximum Ratings
Parameter
Symbol
Input Voltage
Junction Temperature
Storage Temperature
V_IN(MAX)
T_J
T_STG
Value
18
-25°C ~ +125°C
-55°C ~ +150°C
Electrical Characteristics
( Vin = 3.25V, Co = 10uF, Ta = 25°C, unless otherwise specified)
Parameter
Symbol
Test Condition
Reference Voltage
Vref
V_IN = 3.25V, I_O = 10mA
Line Regulation
Load Regulation
Dropout Voltage 1
Dropout Voltage 2
dV_OUT1
dV_OUT2
V_DROP1
V_DROP2
I_OUT=10mA, 3.25V < V_IN < 12.25V
V_IN = 3.25V, 10mA < I_OUT < 1A
I_OUT = 100mA
I_OUT = 1A
Quiescent Current
Iq
V _IN < 12V
Ripple Rejection
RR
f = 120Hz, C_OUT = 22uF Tantalum,
4.15V < V_IN < 4.35, I_OUT = 500mA
MIn.
1.225
0
0
-
-
-
55
Typ.
1.250
1.0
1.0
1.00
1.10
5
100
Units
V
°C
°C
Max.
1.275
2.5
6.0
1.15
1.25
10
200
Units
V
mV
mV
V
V
mA
dB
Sep 2002. Rev. 0
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