600mA Low Dropout Positive
Voltage Regulator
POWER MANAGEMENT
Description
The SC1202 series of high performance positive voltage
regulators are designed for use in applications requiring
low dropout performance at full rated current.
Additionally, the SC1202 series provides excellent
regulation over variations due to line, load and
temperature.
Outstanding features include low dropout performance
at rated current, fast transient response, internal
current limiting and thermal shutdown protection of the
output device. The SC1202 series are three terminal
regulators available in the surface mount SOT-223
package.
SC1202
Features
Low dropout performance, 1.3V max.
Full current rating over line and temperature
Fast transient response
±2% total output regulation over line, load
and temperature
Adjust pin current max. 90µA over temperature
Adjustable or fixed output voltages
Line regulation 0.2% max.
Load regulation 0.4% max.
SOT-223 package. Fully WEEE and RoHS compliant
Applications
Low voltage microcontrollers
Microprocessor I/O supplies
5V to 3.3V conversion for memory, ASIC, custom
circuits, etc.
Typical Application Circuits
Fixed Voltage Regulator
U1
VIN > 4.75V
3
IN
SC1202-3.3
2
TAB
OUT
+
GND
1
VOUT = 3.3V
+
C1
10uF Tant.
C2
10uF Tant.
Adjustable Voltage Regulator
U1
VIN > 4.75V
3
IN
TAB
SC1202
OUT
2
VOUT = 3.45V
+
C1
10uF Tant.
ADJ
1
R1
133 Ohm, 1%
+
C2
10uF Tant.
R2
232 Ohm, 1%
R2
V
OUT
=
V
REF
•
1
+
+
I
ADJ
•
R 2
R1
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
Revision: June 11, 2008
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SC1202
POWER MANAGEMENT
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified
in the Electrical Characteristics section is not implied.
Parameter
Input Voltage
Power Dissipation
Thermal Resistance, Junction to Case
Thermal Resistance, Junction to Ambient
Operating Ambient Temperature Range
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 seconds
ESD Rating (Human Body Model)
Symbol
V
IN
P
D
θ
J C
θ
J A
T
A
T
J
T
STG
T
LEAD
ESD
Maximum
7
Internally Limited
15
156
0 to 70
0 to 125
-65 to 150
300
2
Units
V
W
°C/W
°C/W
°C
°C
°C
°C
kV
Electrical Characteristics
Unless otherwise specified, Adj. V
IN
= 2.65 to 7V and Adj. I
O
= 10mA to 600mA;
Fixed V
IN
= 4.75 to 7V and Fixed I
O
= 0mA to 600mA
Parameter
Output Voltage
(1)
Symbol
V
O
V
IN
5V
I
o
0mA
T
J(4)
25°C
O.T.
Min
3.265
3.230
1.238
1.225
Typ
3.300
3.300
1.250
1.250
0.035
0.2
1.2
Max
3.335
3.369
1.262
1.275
0.2
0.4
1.3
Units
V
Fixed Voltage Option
Reference Voltage
(1)
V
REF
5V
10mA
25°C
O.T.
V
Adj. Voltage Version
Line Regulation
(1)
Load Regulation
(1)
Dropout Voltage
∆V
OUT
,
∆V
REF
= 1%
Current Limit
Quiescent Current Fixed
Voltage Version
Temperature Coefficient
Adjust Pin Current
Adjust Pin Current
Change
REG
(LINE)
REG
(LOAD)
V
D
I
CL
I
Q
T
C
I
ADJ
∆I
ADJ
5V
5V
10mA
O.T.
O.T.
O.T.
O.T.
O.T.
O.T.
O.T.
O.T.
600
%
%
V
mA
10
0.005
55
0.2
13
mA
%/°C
90
5.0
µA
µA
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SC1202
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless otherwise specified, Adj. V
IN
= 2.65 to 7V and Adj. I
O
= 10mA to 600mA;
Fixed V
IN
= 4.75 to 7V and Fixed I
O
= 0mA to 600mA
Parameter
Temperature Stability
Minimum Load Current
Adj. Voltage Version
RMS Output Noise
(2)
Ripple Rejection Ratio
(3)
Symbol
T
S
I
O(MIN)
V
N
R
A
V
IN
I
o
T
J(4)
O.T.
Min
Typ
0.5
5
0.003
Max
Units
%
5V
O.T
25°C
10
mA
%V
O
dB
5V
600mA
O.T.
60
72
NOTES:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2) Bandwidth of 10 Hz to 10 kHz.
(3) 120 Hz input ripple, (C
ADJ
for ADJ = 25µF).
(4) Over Temp. (O.T.) = over specified operating junction temperature range.
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SC1202
POWER MANAGEMENT
Pin Configuration
PIN
1
2
3
FUNCTION
ADJ/GND
OUT
IN
Ordering Information
Device
(1)(2)
V
OUT
(V)
P ackag e
SC1202CST-X.X.TR
SC1202CST3.3TRT
(3)
SC1202CSX.XTRT
(3)
1.3 to 5.7
SOT-223
TAB IS OUTPUT
Notes:
(1) Where X.X denotes voltage options. Available volt-
ages are: 3.3V. Leave blank for adjustable version (see
V
OUT
). Contact factory for additional voltage options.
(2) Only available in tape and reel packaging. A reel
contains 2500 devices.
(3) This product is fully WEEE and RoHS compliant.
Pin Descriptions
Pin
Number
1
Pin Name
AD J
GND
2
3
OUT
IN
Pin Function
This pin is the negative side of the reference voltage for the device. Transient response can
be improved by adding a small bypass capacitor from the adjust pin to ground.
This pin is the bottom end of the internal resistor feedback chain for fixed output voltage
parts, and should be connected to ground.
This is the power output of the device, and is electrically connected to the TAB.
This is the input supply pin for the device.
Block Diagram
Marking Information
3.3V
z.zz:
Voltage option (example: 3.3V). Left blank for
adjustable parts
yyww: Datecode (example: 9812)
xxxx: Semtech Lot # (example: 80101)
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SC1202
POWER MANAGEMENT
Outline Drawing - SOT-223
b1
C B A
N
A
bbb
DIMENSIONS
MILLIMETERS
INCHES
DIM
MIN NOM MAX MIN NOM MAX
A
A1
A2
b
b1
c
D
E
E1
e
e1
L
N
01
aaa
bbb
-
-
.070
-
.004
.000
.059 .063 .067
-
.025
.033
-
.114
.124
-
.009
.014
.248 .256 .264
.264 .276 .287
.130 .138 .146
.090 BSC
.181 BSC
-
-
.030
4
-
0°
10°
.003
.004
-
-
1.80
-
0.02
0.10
1.50 1.60 1.70
-
0.65
0.85
-
2.90
3.15
-
0.23
0.35
6.30 6.50 6.70
6.70 7.00 7.30
3.30 3.50 3.70
2.30 BSC
4.60 BSC
-
-
0.75
4
-
0°
10°
0.08
0.10
E
1
e
e1
B
D
E1
aaa C
A2 A
SEATING
PLANE
C
H
3X b
bbb
C B A
A1
GAGE
PLANE
0.25
DETAIL
L
c
A
01
SEE DETAIL
SIDE VIEW
NOTES:
1.
2.
3.
4.
A
CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
DATUMS -A- AND
-B- TO BE DETERMINED AT DATUM PLANE -H-
DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS
OR GATE BURRS.
REFERENCE JEDEC STD TO-261, VARIATION AA.
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