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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 55A. 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 1F 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 dropout voltage, and output voltage accuracy of 2%. Typical ground current remains approximately 55A, 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
VIN
VOUT
SS6734G
VOUT
+
1F CIN
GND
+
1F COUT
Low Dropout Linear Regulator (CIN and COUT are electrolytic capacitor)
1/15/2005 Rev.2.10
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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
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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
-40C~ 85C -65C~150C 125C 260C
Thermal Resistance Junction to Ambient (Assumes no ambient airflow, no heatsink)
SOT-89 Package TO-92 Package SOT-23 Package
160C/W 150C/W 180C/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
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SS6734G
ELECTRICAL CHARACTERISTICS
PARAMETER
(T =25C, CIN=1F, COUT=1F, 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) IL=1mA, 1.4VVOUT3.2V 3.3VVOUT5.2V IL=0.1~300mA 1.4VVOUT3.9V 4.0VVOUT5.2V VIN=7V, VOUT=0V 4.0VVOUT5.2V 3.0VVOUT3.9V 2.5VVOUT2.9V 2.0VVOUT2.4V 1.4VVOUT1.9V VIN=5~12V VIN=7~12V VIN=5.5~12V VIN=5.5~12V VIN=4.1~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V
Output Voltage
V
Output Voltage Temperature Coefficient Line Regulation
PPM/C
VIN=4V~12V VIN=5.5V~12V VIN=5V VIN=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)
IL=300mA
mV
Ground Current
IO=0.1mA~IMAX 1.4VVOUT3.9V 4.0VVOUT5.2V
A
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 -40C to 85C. 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.
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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
VOUT vs. Temperature
48
Fig. 2
VOUT vs. Temperature
SS6734-52
SS6734-33
Ground Current (A)
Ground Current (A)
48
ILOAD=300mA
46
ILOAD=300mA
46
44
44
42
42
ILOAD=100mA
40
40
ILOAD=100mA ILOAD= 0mA
ILOAD= 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 (A)
40
Ground Current (A)
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
VIN (V)
VIN (V)
Fig. 5
Ground Current vs. VIN
Fig. 6
Ground Current vs. VIN
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SS6734G
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
500 450 400 600
SS6734-52
T= 80C
500
SS6734-33 T= 80C T= 50C T= 20C
VDROP (mV)
VDROP (mV)
350 300 250 200 150 100 50 00
T= 50C T= 20C T=-40C
400
300
200
T=-40C
100
0 50 100 150 200 250 300 350 400 0 50 100 150 200 250 300 350 400
ILOAD (mA)
ILOAD (mA)
Fig. 7
VDROP vs. ILOAD
Fig. 8
VDROP vs. ILOAD
500 490 480
SS6734 VIN = 8V VIN = 7V
Crrent Limit (mA)
470 460 450 440 430 420 410 400 -40
VIN = 6V VIN = 5V
-20 0 20 40 60 80
Temperature (C)
Fig. 9
Current Limit vs. Temperature
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SS6734G
BLOCK DIAGRAM
VIN VOUT
CURRENT LIMITING
ERROR AMP THERMAL SHUTDOWN
+
+
1.235V Reference
-
GND
PIN DESCRIPTIONS
VOUT PIN - Output pin. GND PIN - Power GND. VIN PIN - Power Supply Input.
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SS6734G
PHYSICAL DIMENSIONS
SOT-23 (GU)
D
(unit: mm)
Pb-free lead finish (second-level interconnect).
SYMBOL A
0.25
MIN 0.95 0.05 0.90 0.30 0.08 2.80 2.60 1.50 0.95 BSC 1.90 BSC 0.30 0.60 REF 0
MAX 1.45 0.15 1.30 0.50 0.22 3.00 3.00 1.70
A1 A2 b c D E E1
E1 e e1
E
c L L1
A2
A A1 b
e e1 L L1
0.60
8
SOT-89 (GXX)
D D1 C A
SYMBOL A B B1 C
MIN 1.40 0.44 0.36 0.35 4.40 1.50 2.29 1.50 BSC 3.00 BSC 3.94 0.89
MAX 1.60 0.56 0.48 0.44 4.60 1.83 2.60
H E
D D1 E
L e e1 B B1
e e1 H L
4.25 1.20
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SS6734G
TO-92 (GZX)
SYMBOL A
A D
MIN 4.32 0.36 4.45 3.18 2.42 1.15 3.43 12.70 2.03
MAX 5.33 0.47 5.20 4.19 2.66 1.39 2.66
b D E e
b S E
e1 j L S
L
j
e1 e
Information furnished by Silicon Standard Corporation is believed to be accurate and reliable. However, Silicon Standard Corporation makes no guarantee or warranty, express or implied, as to the reliability, accuracy, timeliness or completeness of such information and assumes no responsibility for its use, or for infringement of any patent or other intellectual property rights of third parties that may result from its use. Silicon Standard reserves the right to make changes as it deems necessary to any products described herein for any reason, including without limitation enhancement in reliability, functionality or design. No license is granted, whether expressly or by implication, in relation to the use of any products described herein or to the use of any information provided herein, under any patent or other intellectual property rights of Silicon Standard Corporation or any third parties.
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