Document
Elektronische Bauelemente
SL1118
0.8A Low Dropout Positive Adjustable or Fixed-Mode Regulator
RoHS Compliant Product
Description
The SL1118 is a low dropout at positive adjustable or fixed-mode regulator with min. of 0.8A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.3V logic supply. SL1118 is also well suited for other applications such as VGA cards. SL1118 is guaranteed to have lower than 1.3V dropout at full load current making it ideal to provide well regulated outputs of 1.25V to 5V with up to 12V input supply.
Features
* 1.4V Max. Dropout Full Load Current * 3-Terminal Adjustable or Fixed 1.5V,1.8V,2.5V,3.3V,5.0V * Output Current Limiting * Good Noise Rejection * Fast Transient Response * Built-in Thermal Shutdown
Applications
* PC Peripheral * Communication
SOT-223
REF.
A C D E I H
Millimeter Min. Max. 6.70 7.30
2.90 3.10 0.02 0.10
0 10
0.60 0.80 0.25 0.35
REF.
B J 1 2 3 4 5
Millimeter Min. Max.
13 TYP.
2.30 REF. 6.30 6.70 6.30 6.70 3.30 3.70 3.30 3.70 1.40 1.80
Typical Circuit
3.3V /0.8A
2.5V/0.8A
http://www.SeCoSGmbH.com/
01-Jun-2002 Rev. A
Any changing of specification will not be informed individual
Page 1 of 4
Elektronische Bauelemente
Block Diagram
SL1118
0.8A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Pin Descriptions
Name
I/O
Adj (GND) I
Pin#
1
Vout
O2
Vin I 3
Function
A resistor divider from this pin to the Vout pin and ground sets the output voltage (Ground only for fixed mode)
The output of the regulator. A minimum of 10 F capacitor (0.15 ESR 20 ) must be connected from this pin to ground to insure stability.
The input pin of regulator .Typically a large storage capacitor(0.15 ESR 20 ) is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load transient response .This pin must always be 1.3V higher than Vout in order for the device to regulate properly.
Absolute Maximum Ratings
Parameter DC Supply Voltage Power Dissipation Storage Temperature Range Operating Juction Temperature Range
Symbol VIN PD TST TOP
Ratings -0.3 to 12
Internally Limited -65~+150
0~+150
Unit V
oC oC
http://www.SeCoSGmbH.com/
01-Jun-2002 Rev. A
Any changing of specification will not be informed individual
Page 2 of 4
Elektronische Bauelemente
SL1118
0.8A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Electrical Characteristics
Parameter Reference Voltage Output Voltage Line Regulation
Load Regulation
SL1118ADJ SL1118-1.5 SL1118-1.8 SL1118-2.5 SL1118-3.3 SL1118-5.0 SL1118-XXX
SL1118ADJ
SL1118-1.5 SL1118-1.8 SL1118-2.5 SL1118-3.3 SL1118-5.0
Conditions Io=10mA, TJ=25 , (VIN-VOUT)=1.5V Io=10mA, TJ=25 , 3V VIN 12V Io=10mA, TJ=25 , 3.3V VIN 12V Io=10mA, TJ=25 , 4V VIN 12V Io=10mA, TJ=25 , 4.8V VIN 12V Io=10mA, TJ=25 , 6.5V VIN 12V Io=10mA, VOUT+1.5V< VIN <12V, TJ=25 VIN=3.3V, Vadj=0, 0mA< Io <0.8A, TJ=25
(Note 1,2)
VIN=3V, 0mA< Io <0.8A, TJ=25 (Note 1,2) VIN=3.3V, 0mA< Io <0.8A, TJ=25 (Note 1,2) VIN=4V, 0mA< Io <0.8A, TJ=25 (Note 1,2) VIN=5V, 0mA< Io <0.8A, TJ=25 (Note 1,2) VIN=8V, 0mA< Io <0.8A, TJ=25 (Note 1,2)
Dropout Voltage (VIN-VOUT)
SL1118ADJ/1.5/ 1.8/2.5/3.3/5.0
Io=0.8A,(
VOUT =0.1% VOUT)
Min Typ Max Unit 1.225 1.250 1.275 V 1.470 1.500 1.530 V 1.764 1.800 1.836 V 2.450 2.500 2.550 V 3.235 3.300 3.365 V 4.900 5.000 5.100 V
- - 0.2 %
- - 1%
- 12 15 mV - 15 18 mV - 20 25 mV - 26 33 mV - 40 50 mV
- 1.2 1.4 V
Current Limit
SL1118ADJ/1.5/ 1.8/2.5/3.3/5.0
VIN-VOUT=5V
Minimum Load Current SL1118-XXX
0 TJ 125
Thermal Regulation
TA=25 ,30ms pulse
Ripple Rejection
F=120HZ,COUT=25uF Tantalum, IOUT=0.8A
SL1118-XXX
VIN=VOUT+3V
Temperature Stability IO=10mA
JA Thermal Resistance
Junction–to-Ambient(No
heat sink ;No air flow)
JC Thermal Resistance Junction-to-Case
Control Circuitry/Power Transistor
0.9 -
-A
- 5 10 mA - 0.008 0.04 %/W
- 60 70 dB - 0.5 - %
- 117 -
/w
- 15 -
/w
Note 1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead =1/18” from the package.
Note 2: Line and load regulation are guaranteed up to the maximum power dissipation of 5W. Power dissipation is determined by the difference between input and output and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range.
Note 3: Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V input/output differential the device is guaranteed to regulate if the output current is greater than 10mA.
h tp://www.SeCoSGmbH.com/
01-Jun-2002 Rev. A
Any changing of specification will not be informed individual
Page 3 of 4
Elektronische Bauelemente Characteristics Curve
SL1118
0.8A Low Dropout Positive A.