UNISONIC TECHNOLOGIES CO., LTD
LM2954
300 mA LOW-DROPOUT
VOLTAGE REGULATOR
DESCRIPTION
The UTC
LM2954
is a monolithic integrated voltage regulator
with low dropout voltage, and low quiescent current. It includes
many features that suitable for different applications with TO-92,
DIP-8, SOP-8 and SOT-223 packages.
LINEAR INTEGRATED CIRCUIT
FEATURES
*High Accuracy Fixed Output.
*Output Voltage Programmable and Logic Controlled Shutdown
And Error Flag Available for DIP and SOP Package.
*Extremely Low Quiescent Current And Dropout Voltage.
*Extremely Tight Load And Line Regulation.
*Current and Thermal Limiting.
*Very low Temperature Coefficient.
ORDERING INFORMATION
Normal
LM2954-xx-AA3-R
LM2954-xx-D08-T
LM2954-xx-S08-R
LM2954-xx-S08-T
LM2954-xx-T92-B
LM2954-xx-T92-K
Order Number
Lead Free Plating
LM2954L-xx-AA3-R
LM2954L-xx-D08-T
LM2954L-xx-S08-R
LM2954L-xx-S08-T
LM2954L-xx-T92-B
LM2954L-xx-T92-K
Halogen Free
LM2954G-xx-AA3-R
LM2954G-xx-D08-T
LM2954G-xx-S08-R
LM2954G-xx-S08-T
LM2954G-xx-T92-B
LM2954G-xx-T92-K
Package
SOT-223
DIP-8
SOP-8
SOP-8
TO-92
TO-92
Pin assignment
1
2
3
I
G
O
refer to Pin
Configurations
O
O
G
G
I
I
Packing
Tape Reel
Tube
Tape Reel
Tube
Tape Box
Bulk
Note: 1. Pin assignment: I: Vin
2. xx: Output Voltage
O: V
OUT
G: GND
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Copyright © 2010 Unisonic Technologies Co., Ltd
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QW-R102-002.G
LM2954
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
LINEAR INTEGRATED CIRCUIT
MARKING
SOT-223
33:3.3V
50:5.0V
TO-92
3.3:3.3V
5.0:5.0V
UTC
LM2954
VOLTAGE CODE
1
L:LEAD PLATING
G:HALOGEN FREE
DATA CODE
3.3:3.3V
5.0:5.0V
UTC
DATA CODE
L:LEAD PLATING
G:HALOGEN FREE
2954
VOLTAGE CODE
SOP-8/DIP-8
ADJ
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R102-002.G
LM2954
PIN CONFIGURATIONS
UTC LM2954
LINEAR INTEGRATED CIRCUIT
1
2
3
OUTPUT
INPUT
GND
TO-92 Plastic Package Bottom View
UTC LM2954
INPUT
GND
OUTPUT
SOT-223 Package
OUTPUT
1
2
UTC LM2954
8
7
6
5
INPUT
SENSE
FEEDBACK
SHUTDOWN
3
4
5V TAP
GND
ERROR
SOP-8 or DIP-8 Package
UNISONIC TECHNOLOGIES CO., LTD
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QW-R102-002.G
LM2954
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
UNREGULATED
DC
FEEDBACK
INPUT
OUTPUT
5V 150mA
MAX.
SENSE
182kΩ
FROM CMOS
OR TTL
SHUT
DOWN
60mV
ERROR
AMPLIFIER
60kΩ
ERROR
1.23
REF
ERROR
DETECTION
COMPARATOR
TO CMOS
OR TTL
GND
5V TAP
330KΩ
1.5
μF
UNISONIC TECHNOLOGIES CO., LTD
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QW-R102-002.G
LM2954
ABSOLUTE MAXIMUM RATINGS
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
VALUE
UNIT
Supply Voltage
V
CC
-0.3 ~ +30
V
Feedback Voltage
V
FB
-1.5 ~ +30
V
Shutdown Voltage
V
SHDN
-0.3 ~ +30
V
Comparator Output Voltage
V
OUT
-0.3 ~ +30
V
Junction Temperature
T
J
+125
°C
Operating Temperature
T
OPR
-40 ~ +85
°C
Storage temperature
T
STG
-40 ~ +150
°C
Note: 1.Absolute maximum ratings are those values beyond which the device which the device could be permanently
damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2.The device is guaranteed to meet performance specification within 0°C~+70°C operating temperature range
and assured by design from -20°C~+85°C, characteristic and correlation with static process control.
ELECTRICAL CHARACTERISTICS
(T
J
=25°C, V
IN
=6V, I
L
=100μA, C
L
=1μF, unless otherwise specified)
PARAMETER
LM2954-3.3
LM2954-5.0
Output Voltage Temperature Coefficient
Line Regulation
Load Regulation
Output Voltage
Dropout Voltage
Ground Current
Dropout Ground Current
Current Limit
Output Noise (10Hz to 100KHz)
LM2954-ADJ For 8-Pin Version Only
Reference Voltage
Reference Voltage
Feedback Pin Bias Current
Reference Voltage Temperature
Coefficient
Feedback Bias Current Temperature
Coefficient
SYMBOL
V
OUT
TEST CONDITIONS
T
J
=25°C
MIN.
3.23
4.90
20
TYP.
3.3
5.0
0.1
0.2
380
0.075
8
300
450
0.12
12
MAX. UNIT
3.37
V
5.10
100 ppm/°C
0.2
%
0.5
400
mV
600
0.23
mA
14
230
μA
mA
430
μV
160
100
1.25
1.27
20
50
0.1
40
V
V
nA
ppm/°C
nA/°C
T
C
V
O
△V
OUT
6V≦V
IN
≦30V
△V
OUT
100μA≦I
L
≦300
mA
I
L
=100mA
V
D
I
L
=200mA (note 2)
I
L
=100μA
I
GND
I
L
=200mA
I
D
V
IN
=4.5V,I
L
=100μA
I
LIMIT
V
OUT
=0
C
L
=1μF
eN
C
L
=200μF
C
L
=3.3μF
V
REF
V
REF
I
B(FB)
T
C
V
REF
T
C
I
O
V
REF
≤V
OUT
≤(V
IN
-1V),
2.3V≤V
IN
≤18V,
100μA≤I
L
≤100mA,
T
J
≤T
JMAX
1.22
1.19
1.235
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R102-002.G
微控制器 MCU
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