JIANGSU CHANGJING ELECTRONICS TECHNOLOGY CO., LTD
1A LOW DROPOUT LINEAR REGULATOR
SCJT1117B-XXX
SOT-223
FEATURES
z Low Dropout Voltage: 1.3V(typ.) at 1A Output Current
z Trimmed Current Limit
1. ADJ/GND
2. OUTPUT
z On-Chip Thermal Shutdown
z Three-Terminal Adjustable to 1.2V,1.5V,1.8V, 2.5V, 3.3V, 5V
3.IN
z Operation Junction Temperature: -25℃ to125℃
GENERAL DESCRIPTION
The SCJT1117B-XXX is a series of low dropout three-terminal regulators with a dropout of 1.3V(typ.)
at 1A output current.
The SCJT1117B-XXX series provides current limiting and thermal shutdown. Its circuit includes
a trimmed bandgap. reference to assure output voltage accuracy to be within 1.5%. Current limit is
trimmed to ensure specified. output current and controlled short-circuit current. On-chip thermal
shutdown provides protection against any combination of overload and ambient temperature that
would create excessive junction temperature.
The SCJT1117B-XXX has an adjustable version, that can provide the output voltage from 1.2V to
12V with only 2 external resistors.
APPLICATIONS
z
PC Motherboard
z
LCD Monitor
z
Graphic Card
z
DVD-Video Player
z
NIC/Switch
z
Telecom Modem
z
ADSL Modem
z
Printer and Other Peripheral Equipment
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1
Rev - 1.3
MAXIMUM RATINGS
ORDERING INFORMATION
Package
Operating Junction Temperature Range
Part NO.
SCJT1117B-ADJ
SCJT1117B-1.2
SCJT1117B-1.5
-25 to 125℃
SOT-223
SCJT1117B-1.8
SCJT1117B-2.5
SCJT1117B-3.3
SCJT1117B-5.0
ABOSLUTE MAXIMUM RATINGS (Ta=25℃ unless otherwise noted)
Symbol
Value
Unit
Vi
20
V
RθJA
10
℃/W
Junction Temperature
Tj
-25~+125
℃
Storage Temperature
Tstg
-55~+150
℃
Lead Temperature (Soldering, 10s)
TL
260
℃
VESD
400
V
Parameter
Input Voltage
Thermal Resistance from Junction to Ambient
ESD Voltage (Machine Model)
Note: Stresses greater than those listed under ”Absolute Maximum Ratings” may cause permanent
damage to the device. These are stress ratings only, and functional of the device at these or any other
conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure
to “Absolute Maximum Ratings” for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
Symbol
Value
Unit
Input Voltage
Vi
15
V
Operating Junction Temperature
Tj
-25~+125
℃
Parameter
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2
Rev - 1.3
ELECTRICAL CHARACTERISTICS
V IN≤10V, TJ=25℃ unless otherwise specified.
Parameter
Reference Voltage
Symbol
VIROC
Part NO.
SCJT1117B-ADJ
SCJT1117B-1.2
SCJT1117B-1.5
SCJT1117B-1.8
Output Voltage
VO
SCJT1117B-2.5
SCJT1117B-3.3
SCJT1117B-5.0
Line Regulation
Load Regulation
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Max
IOUT=10mA, VIN =3.23V
1.225
1.25
1.275
10mA≤IOUT≤1A, 2.75V≤VIN -VOUT ≤12V
1.219
1.25
1.281
IOUT=10mA, VIN=3.2V
1.176
1.2
1.224
10mA≤IOUT≤1A, 2.7V≤VIN ≤12V
1.170
1.2
1.230
IOUT=10mA, VIN=3.5V
1.470
1.5
1.530
10mA≤IOUT≤1A, 3V≤VIN ≤12V
1.463
1.5
1.537
IOUT=10mA, VIN=3.8V
1.764
1.8
1.836
10mA≤IOUT≤1A, 3.3V≤VIN ≤12V
1.755
1.8
1.845
IOUT=10mA, VIN=4.5V
2.450
2.5
2.550
10mA≤IOUT≤1A, 4V≤VIN ≤12V
2.438
2.5
2.562
IOUT=10mA, VIN=5.3V
3.234
3.3
3.366
10mA≤IOUT≤1A, 4.8V≤VIN ≤12V
3.218
3.3
3.382
IOUT=10mA, VIN=7.0V
4.900
5.0
5.100
10mA≤IOUT≤1A, 6.5V≤VIN ≤12V
4.875
5.0
5.125
Unit
V
V
0.2
SCJT1117B-1.2
IOUT=10mA, 1.5V≤VIN -VOUT ≤8.8V
0.03
0.2
SCJT1117B-1.5
IOUT=10mA, 1.5V≤VIN -VOUT ≤8.5V
0.03
0.2
SCJT1117B-1.8
IOUT=10mA, 1.5V ≤VIN -VOUT ≤10.2V
0.03
0.2
SCJT1117B-2.5
IOUT=10mA, 1.5V ≤VIN -VOUT ≤9.5V
0.03
0.2
SCJT1117B-3.3
IOUT =10mA, 1.5V≤VIN -VOUT ≤8.7V
0.03
0.2
SCJT1117B-5.0
IOUT=10mA, 1.5V ≤VIN -VOUT ≤7V
0.03
0.2
SCJT1117B-ADJ
2
8
SCJT1117B-1.2
2
8
SCJT1117B-1.5
2
8
3
12
SCJT1117B-2.5
4
16
SCJT1117B-3.3
6
24
SCJT1117B-5.0
9
36
1.3
1.5
V
VIN= 5V 10mA≤IOUT≤ 1A
55
120
μA
IL
2.75V≤VIN -VOUT ≤12V (ADJ only)
2
10
mA
Iq
VIN= VOUT+1.25V (ADJ except)
2
10
mA
LNR
LDR
IAdj
Ripple Rejection
Typ
0.03
Adjust Pin Current
Quiescent Current
Min
IOUT=10mA, 1.5V≤VIN -VOUT ≤10.75V
VD
Load Current
conditions
SCJT1117B-ADJ
Dropout Voltage
Minimum
Test
RR
SCJT1117B-1.8
VIN-VOUT=1.5V, 10mA≤IOUT ≤1A
=
ΔVREF=1%, IOUT 1.0A
SCJT1117B-ADJ
f=120Hz,COUT=22μF Tantalum, VIN-VOUT=3V,
IOUT=1A
3
60
%
%/V
mV
mV
dB
Rev - 1.3
FUNCTIONAL BLOCK and TYPICAL APPLICATION
FUNCTIONAL BLOCK DIAGRAM
TYPICAL APPLICATION CIRCUIT
SCJT1117B-ADJ
IN
VIN
C1=10μF
Tantalum
VOUT
OUT
ADJ
VREF
R1
IADJ
C2=22μF
Tantalum
R2
VOUT = VREF (1+ R2/R1)+IADJR2
SCJT1117B-Fixed
VIN
C1=10μF
Tantalum
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IN
OUT
GND
4
VOUT
C2=22μF
Tantalum
Rev - 1.3
TYPICAL PERFORMANCE CHARACTERISTICS
TA=25℃, unless otherwise noted.
Line regulation for SCJT1117B-ADJ
Dropout voltage
Vout Vs. Vin
Dropout Vs. Iout
Dropout voltage (V)
1.5
Vout(V)
1.2
0.9
0.6
0.3
0
1.5
1.2
0.9
0.6
0.3
0
0
2
4
6
8
10
12
14
0
0.2
0.4
0.6
Vin (V)
1
1.2
Iout (A)
Load regulation for SCJT1117B-ADJ
Thermal performance with OTP
Vout Vs. Iout
Vout Vs. Temp
1.5
1.5
1.2
1.2
Vout(V)
Vout(V)
0.8
0.9
0.6
0.3
0.9
0.6
0.3
0
0
0.2
0.4
0.6
0.8
1
0
1.2
-50
Iout (A)
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0
50
100
150
200
Temperature (C)
5
Rev - 1.3
SOT-223 Package Outline Dimensions
Dimensions In Millimeters
Symbol
Min.
Dimensions In Inches
Max.
Min.
Max.
A
——
1.800
——
0.071
A1
0.020
0.100
0.001
0.004
A2
1.500
1.700
0.059
0.067
b
0.660
0.840
0.026
0.033
b1
2.900
3.100
0.114
0.122
c
0.230
0.350
0.009
0.014
D
6.300
6.700
0.248
0.264
E
6.700
7.300
0.264
0.287
E1
3.300
3.700
0.130
0.146
2.300(BSC)
e
0.091(BSC)
L
0.750
——
0.030
——
θ
0°
10°
0°
10°
SOT-223 Suggested Pad Layout
NOTICE
JSCJ reserves the right to make modifications,enhancements,improvements,corrections or other
changes without further notice to any product herein. JSCJ does not assume any liability arising
out of the application or use of any product described herein.
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6
Rev - 1.3
SOT-223 Tape and Reel
P1
C
A
E
P0
d
SOT-223 Embossed Carrier Tape
A
B
F
W
A
A
A
P
A-A
Packaging Description:
SOT-223 parts are shipped in tape. The carrier
tape is made from a dissipative (carbon filled)
polycarbonate resin. The cover tape is a multilayer
film (Heat Activated Adhesive in nature) primarily
composed of polyester film, adhesive layer, sealant,
and anti-static sprayed agent. These reeled parts in
standard option are shipped with 2,500 units per 13"
or 33.0cm diameter reel. The reels are clear in color
and is made of polystyrene plastic (anti-static
coated).
Dimensions are in millimeter
Pkg type
A
B
C
d
E
F
P0
SOT-223
6.765
7.335
1.88
Ø1.50
1.75
5.50
4.00
P
P1
W
8.00
2.00
12.00
SOT-223 Tape Leader and Trailer
Trailer Tape
51±1 Empty Pockets
G
SOT-223 Reel
Leader Tape
Components
51±1 Empty Pockets
H
W1
D1
D2
I
W2
D
Dimensions are in millimeter
Reel Option
D
D1
D2
G
H
I
W1
W2
13''Dia
Ø330.00
100.00
13.00
R151.00
R56.00
R6.50
12.40
17.60
Carton Size(mm)
G.W.(kg)
REEL
2,500 pcs
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Reel Size
13 inch
Box
2,500 pcs
Box Size(mm)
336×336×48
7
Carton
20,000 pcs
445×355×365
Rev - 1.3