Document
m TECHNICAL DATA
1.0A LtoawShDereot4pUo.uctoPositive Voltage Regulator IL1117-xxFeatures
SOT-223
.Da● Adjustable and Fixed of 1.2, 1.25, 1.5, 1.8, 2.5, 2.85, 3.3,
5.0V
w● Space saving SMD types of SOT-223 w● 1.2V Drop-out Voltage w ● 1.0A Output Current
● Line Regulation Typically at 0.2% max ● Current Limiting and Thermal Protection
mTO-252
TO-220
1. ADJ/GND 2. Output 3. Input
TO-263
et4U.coGeneral Description eThe IL1117 is a series of low dropout voltage regulators which can provide hup to 1A of output current. The IL1117 is available in seven fixed voltage,
1.2, 1.25, 1.5, 1.8, 2.5, 2.85, 3.3 and 5.0V. Additionally it is also available in
Sadjustable version. On chip precision trimming adjusts the reference/
output voltage to within ± 2%. Current limit is also trimmed to ensure
taspecified output current and controlled short-circuit current.
The IL1117 series is available in SOT-223 packages.
aA minimum of 10uF tantalum capacitor is required at the output to
improve the transient response and stability.
.DApplications w● Post Regulator for switching DC/DC Converter
● High Efficiency Linear Regulator
w● Battery Chargers
● PC Add on Card
w● Motherboard clock supplies
● LCD Monitor
m● Set-top Box U.coAbsolute Maximum Ratings et4● Maximum Input Voltage ~ 15.0V e● Operating Junction Temperature Range -25℃ ~ 125℃ www.DataSh●Storage Temperature Range -50℃ ~ 150℃
1
IL1117-xx
Electrical Characteristics
(Vin = 5V, Co = 10uF, Ta = 25℃, unless otherwise specified)
PARAMETER
OUTPUT VOLTAGE
IL1117-1.2 IL1117-1.25 (Adjustable) IL1117-1.5 IL1117-1.8 IL1117-2.5 IL1117-2.85 IL1117-3.3 IL1117-5.0
CONDITIONS
Tj = -25°C to +125°C Io = 10mA to 1.0A, Vin = 2.7 to 12.0V Io = 10mA to 1.0A, Vin = 2.8 to 12.0V Io = 10mA to 1.0A, Vin = 3.0 to 12.0V Io = 10mA to 1.0A, Vin = 3.3 to 12.0V Io = 10mA to 1.0A, Vin = 4.0 to 12.0V Io = 10mA to 1.0A, Vin = 4.4 to 12.0V Io = 10mA to 1.0A, Vin = 4.8 to 12.0V Io = 10mA to 1.0A, Vin = 6.5 to 15.0V
MIN TYP MAX UNIT
1.176 1.225 1.470 1.764 2.450 2.790 3.240 4.900
1.200 1.250 1.500 1.800 2.500 2.850 3.300 5.000
1.224 1.280 1.530 1.836 2.550 2.910 3.360 5.100
V
LINE REGULATION
IL1117-1.2 IL1117-1.25 (Adjustable) IL1117-1.5 IL1117-1.8 IL1117-2.5 IL1117-2.85 IL1117-3.3 IL1117-5.0
Io =10mA to 1.0A, Vin = 2.7 to 12.0V Io =10mA to 1.0A, Vin = 2.8 to 12.0V Io =10mA to 1.0A, Vin = 3.0 to 12.0V Io =10mA to 1.0A, Vin = 3.3 to 12.0V Io =10mA to 1.0A, Vin = 4.0 to 12.0V Io =10mA to 1.0A, Vin = 4.4 to 12.0V Io =10mA to 1.0A, Vin = 4.8 to 12.0V Io =10mA to 1.0A, Vin = 6.5 to 15.0V
0.1 0.2 % 2.0 7.0 mV 2.0 7.0 mV 2.0 7.0 mV 2.0 7.0 mV 2.0 7.0 mV 3.0 7.0 mV 4.0 10.0 mV
LOAD REGULATION
IL1117-1.2 IL1117-1.25 (Adjustable) IL1117-1.5 IL1117-1.8 IL1117-2.5 IL1117-2.85 IL1117-3.3 IL1117-5.0
Io = 10mA to 1.0A, Vin = 3.2V Io = 10mA to 1.0A, Vin = 3.3V Io = 10mA to 1.0A, Vin = 3.5V Io = 10mA to 1.0A, Vin = 3.8V Io = 10mA to 1.0A, Vin = 4.5V Io = 10mA to 1.0A, Vin = 4.85V Io = 10mA to 1.0A, Vin = 5.3V Io = 10mA to 1.0A, Vin = 7.0V
0.2 0.4 % 3.0 10.0 mV 3.0 10.0 mV 3.0 10.0 mV 3.0 10.0 mV 3.0 10.0 mV 4.0 12.0 mV 5.0 15.0 mV
DROPOUT VOLTAGE (2) All Models
CURRENT LIMIT MINIMUM LOAD CURRENT Adjustable Models
Io = 800mA Io =1A Io =1A (Tj = -25°C to +125°C.)
Vin = 5V
Vin = 13.75V
1000
1.10 1.20 1.20
1250
1.20 1.30 1.55 1600
5
QUIESCENT CURRENT
Vin = 5V
5.2 10
Adjust Pin Current vs Load Current, IL1117
TEMPERATURE DRIFT
Io = 10mA, Vin = 1.4 to 10V Io = 10mA to 1A, Vin = 1.4 to 10V
Tj = -25°C to +125°C
50 120 0.5 5
0.5
RMS Output Noise
Bandwidth of 10Hz to 10kHz at 25°C
0.003
Ripple Rejection Ratio
120Hz input Ripple(Cadj for ADJ) = 25uF Vin -Vo = 5V, Io = 1.0A Tj = -25°C to +125°C
60
72
NOTES: (1) IL1117-x adjustable versions require a minimum load current for ±3% regulation.
(2) Dropout voltage is the input voltage minus output voltage that produces a 1% decrease in output voltage.
V
mA
mA mA uA uA % %Vo
dB
2
Block Diagram
IL1117-xx
Application Information
IL1117
FIGURE 1. Fixed-Voltage Model —Basic Connections.
IL1117 (Adj)
FIGURE 2. Adjustable-Voltage Model --Basic Connections.
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