SS6734G
300mA Low Dropout Linear Regulator
FEATURES
Low
dropout voltage
of 470mV at
an output
current of 300mA
(3.0V
output version).
Guaranteed 300mA output current.
Low
ground current of
55µA.
Output
voltage accuracy of 2% at
1.8V/ 2.0V
/2.5V
/2.7V/ 3.0V/ 3.3V/ 3.5V/ 3.7V/ 3.8V/ 5.0V/5.2V
Only needs 1µF
output capacitor
for
stability.
Current and
thermal limiting.
DESCRIPTION
The
SS6734G
is a 3-pin low-dropout linear
regulator
with
superior characteristics,
which
include zero base current loss, very
low drop-
out voltage, and output
voltage accuracy of 2%.
Typical ground current remains approximately
55µA, for loads ranging from
zero to maximum.
Dropout voltage at
an output current of
300mA
is
exceptionally low. Built-in
output current
limiting and thermal limiting
provide maximum
protection
against fault conditions.
Pb-free lead finish (second-level interconnect).
APPLICATIONS
CD-ROM Drivers.
LAN Cards.
Microprocessors.
DRAM
Modules.
Wireless Communication Systems.
Battery Powered Systems.
The SS6734G is available in SOT-23-3, SOT-89,
and TO-92 packages.
TYPICAL APPLICATION CIRCUIT
VIN
V
IN
VOUT
SS6734G
V
OUT
+
1µF
C
IN
GND
+
1µF
C
OUT
Low Dropout Linear Regulator
(C
IN
and C
OUT
are electrolytic capacitor)
1/15/2005 Rev.2.10
www.SiliconStandard.com
1 of 9
SS6734G
ORDERING INFORMATION
SS6734-XXGXX XX
Packing:
TR: Tape
and reel
SOT-23 (GU)
1: GND
2: VOUT
3: VIN
1
2
3
PIN CONFIGURATION
Package
type:
U: SOT-23-3
XA: SOT-89
XT: SOT-89
ZT: TO-92
ZL: TO-92
SOT-89 (GXA)
TOP VIEW
1: GND
2. VIN
G: Commercial, Pb-free lead finish 3. VOUT
1
2
3
Output
v
voltage:
18: 1.8V
20: 2.0V
25: 2.5V
27: 2.7V
30: 3.0V
33: 3.3V
35: 3.5V
37: 3.7V
38: 3.8V
50: 5.0V
52: 5.2V
Example:
SS6734-18GXATR
1.8V
version,
in SOT-89
package,
with Pb-free lead finish, shipped
on tape and reel.
SOT-89 (GXT)
TOP VIEW
1: VOUT
2. GND
3. VIN
TO-92 (GZT)
TOP VIEW
1: GND
2. VIN
3. VOUT
TO-92 (GZL)
TOP VIEW
1: VIN
2. GND
3. VOUT
1
2
3
1
2
3
1
2
3
SOT-23 MARKING
Part No.
SS6734-18GU
SS6734-20GU
SS6734-25GU
SS6734-27GU
GU
CD18P
CD20P
CD25P
CD27P
Part No.
SS6734-35GU
SS6734-37GU
SS6734-38GU
SS6734-50GU
GU
CD35P
CD37P
CD38P
CD50P
SS6734-30GU
SS6734-33GU
CD30P
CD33P
SS6734-52GU
CD52P
1/15/2005 Rev.2.10
www.SiliconStandard.com
2 of 9
SS6734G
SOT-89 MARKING
Part No.
SS6734-18GXA
SS6734-20GXA
SS6734-25GXA
SS6734-27GXA
SS6734-30GXA
SS6734-33GXA
SS6734-35GXA
SS6734-37GXA
SS6734-38GXA
SS6734-50GXA
SS6734-52GXA
GXA
CA18P
CA20P
CA25P
CA27P
CA30P
CA33P
CA35P
CA37P
CA38P
CA50P
CA52P
Part No.
SS6734-18GXT
SS6734-20GXT
SS6734-25GXT
SS6734-27GXT
SS6734-30GXT
SS6734-33GXT
SS6734-35GXT
SS6734-37GXT
SS6734-38GXT
SS6734-50GXT
SS6734-52GXT
GXT
CB18P
CB20P
CB25P
CB27P
CB30P
CB33P
CB35P
CB37P
CB38P
CB50P
CB52P
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage
Operating Temperature Range
Storage Temperature Range
Maximum Junction Temperature
Lead Temperature (Soldering) 10 sec.
-0.3
~12V
-40°C~ 85°C
-65°C~150°C
125°C
260°C
Thermal Resistance Junction to Ambient
(Assumes no ambient airflow, no heatsink)
SOT-89 Package
TO-92 Package
SOT-23 Package
160°C/W
150°C/W
180°C/W
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
TEST CIRCUIT
Refer to the TYPICAL APPLICATION CIRCUIT
1/15/2005 Rev.2.10
www.SiliconStandard.com
3 of 9
SS6734G
ELECTRICAL CHARACTERISTICS
PARAMETER
(T =25°C, C
IN
=1µF, C
OUT
=1µF, unless otherwise
A
specified.) (Note1 )
MIN.
5.100
4.900
3.725
3.625
3.430
3.235
2.940
2.646
2.450
1.960
1.764
TYP.
5.200
5.000
3.800
3.700
3.500
3.300
3.000
2.700
2.500
2.000
1.800
50
MAX.
5.300
5.100
3.875
3.775
3.570
3.365
3.060
2.754
2.550
2.040
1.836
UNIT
TEST CONDITIONS
No Load
SS6734-52
SS6734-50
SS6734-38
SS6734-37
SS6734-35
SS6734-33
SS6734-30
SS6734-27
SS6734-25
SS6734-20
SS6734-18
(Note 2)
I
L
=
1mA,
1.4V≤V
OUT
≤3.2V
3.3V≤V
OUT
≤5.2V
I
L
=0.1~300mA
1.4V≤V
OUT
≤3.9V
4.0V≤V
OUT
≤5.2V
V
IN
=7V, V
OUT
=0V
4.0V≤V
OUT
≤5.2V
3.0V≤V
OUT
≤3.9V
2.5V≤V
OUT
≤2.9V
2.0V≤V
OUT
≤2.4V
1.4V≤V
OUT
≤1.9V
V
IN
=5~12V
V
IN
=7~12V
V
IN
=5.5~12V
V
IN
=5.5~12V
V
IN
=4.1~12V
V
IN
=4.0~12V
V
IN
=4.0~12V
V
IN
=4.0~12V
V
IN
=4.0~12V
V
IN
=4.0~12V
V
IN
=4.0~12V
V
IN
=4.0~12V
V
IN
=4.0~12V
Output Voltage
V
Output Voltage
Temperature
Coefficient
Line Regulation
PPM/°C
V
IN
=4V~12V
V
IN
=5.5V~12V
V
IN
=5V
V
IN
=7V
300
3
3
7
15
10
10
20
40
mV
Load Regulation
(Note 3)
Current Limit
(Note 4)
mV
mA
400
470
570
800
1260
55
55
80
80
Dropout Voltage
(Note 5)
I
L
=300mA
mV
Ground Current
I
O
=0.1mA~I
MAX
1.4V≤V
OUT
≤3.9V
4.0V≤V
OUT
≤5.2V
µA
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Specifications are guaranteed by Statistical Quality Control (SQC),
not by 100%
production
testing, over the
operating temperature range from -40°C to 85°C.
Guaranteed by design.
Regulation is measured at constant junction temperature, using pulse testing with a low ON time.
Current limit is measured by pulsing a short time.
Dropout voltage is defined as the input to output differential at which the output voltage drops
100mV.
1/15/2005 Rev.2.10
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4 of 9
SS6734G
TYPICAL PERFORMANCE CHARACTERISTICS
5.40
5.35
5.30
3.50
SS6734-52
3.45
3.40
SS6734-33
V
OUT
(V)
V
OUT
(V)
5.25
5.20
5.15
5.10
5.05
5.00
-50
3.35
3.30
3.25
3.20
3.15
3.10
-50
-30
-10
10
30
50
70
90
-30
-10
10
30
50
70
90
Temperature (°C)
Temperature (°C)
Fig. 1
50
V
OUT
vs. Temperature
48
Fig. 2
V
OUT
vs. Temperature
SS6734-52
SS6734-33
Ground Current (µA)
Ground Current (µA)
48
I
LOAD
=300mA
46
I
LOAD
=300mA
46
44
44
42
42
I
LOAD
=100mA
40
40
I
LOAD
=100mA
I
LOAD
= 0mA
I
LOAD
= 0mA
0
10 20 30 40 50 60 70 80 90
38
-40 -30 -20 -10
38
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90
Temperature (°C)
Temperature (°C)
Fig. 3
60
Ground Current vs. Temperature
60
Fig. 4
Ground Current vs. Temperature
SS6734-52
SS6734-33
Ground Current (µA)
40
Ground Current (µA)
0
1
2
3
4
5
6
7
8
9
10
11
12
50
50
40
30
30
20
20
10
10
0
0
0
1
2
3
4
5
6
7
8
9
10
11
12
V
IN
(V)
V
IN
(V)
Fig. 5
Ground Current vs. V
IN
Fig. 6
Ground Current vs. V
IN
1/15/2005 Rev.2.10
www.SiliconStandard.com
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