LM2954-33-S08-K [UTC]
300 mA LOW-DROPOUT VOLTAGE REGULATOR; 300毫安低压差稳压器型号: | LM2954-33-S08-K |
厂家: | Unisonic Technologies |
描述: | 300 mA LOW-DROPOUT VOLTAGE REGULATOR |
文件: | 总7页 (文件大小:87K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
LM2954
LINEAR INTEGRATED CIRCUIT
300 mA LOW-DROPOUT
VOLTAGE REGULATOR
1
1
SOT-223
ꢀ
DESCRIPTION
TO-92
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.
ꢀ
FEATURES
SOP-8
DIP-8
*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.
*Pb-free plating product number: LM2954L
*Very low temperature coefficient.
ꢀ
ORDERING INFORMATION
Order Number
Pin assignment
Packing
Package
Normal
Lead Free Plating
1
I
2
3
LM2954-xx-AA3-R
LM2954-xx-D08-T
LM2954-xx-S08-R
LM2954-xx-S08-T
LM2954-xx-T92-B
LM2954-xx-T92-K
LM2954L-xx-AA3-R
LM2954L-xx-D08-T
LM2954L-xx-S08-R
LM2954L-xx-S08-T
LM2954L-xx-T92-B
LM2954L-xx-T92-K
SOT-223
DIP-8
G
O
Tape Reel
Tube
refer to Pin
Configurations
SOP-8
SOP-8
TO-92
TO-92
Tape Reel
Tube
O
O
G
G
I
I
Tape Box
Bulk
Note: 1. Pin assignment: I:Vin O:Vout G:Ground
2.xx: Output Voltage
LM2954L-xx-AA3-R
(1)Packing Type
(1) B: Tape Box, K: Bulk, R: Tape Reel, T: Tube
(2) AA3: SOT-223, D08: DIP-08, S08: SOP-8,
T92: TO-92
(2)Package Type
(3)Output Voltage Code
(4)Lead Plating
(3) xx: 3.3V:33, 5.0V:50, ADJ:AD
(4) L: Lead Free Plating, Blank: Pb/Sn
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LM2954
LINEAR INTEGRATED CIRCUIT
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MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
LM2954
LEAD
PLATING
33:3.3V
50:5.0V
SOT-223
VOLTAGE
CODE
DATE
CODE
1
2
3
UTC
LM2954
LEAD
PLATING
3.3:3.3V
5.0:5.0V
TO-92
VOLTAGE
CODE
DATA CODE
1
UTC
3.3:3.3V
5.0:5.0V
DATA CODE
2954
LEAD PLATING
VOLTAGE CODE
SOP-8/DIP-8
UTC
DATA CODE
ADJ
LM 2954
LEAD PLATING
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LM2954
LINEAR INTEGRATED CIRCUIT
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PIN CONFIGURATIONS
UTC LM2954
2
1
3
OUTPUT
INPUT
GND
TO-92 Plastic Package Bottom View
UTC LM2954
INPUT
GND
OUTPUT
SOT-223 Package
OUTPUT
SENSE
INPUT
1
2
3
4
8
7
6
5
FEEDBACK
5V TAP
UTC LM2954
SHUTDOWN
GND
ERROR
SOP-8 or DIP-8 Package
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LM2954
LINEAR INTEGRATED CIRCUIT
ꢀ
BLOCK DIAGRAM
5V 150mA
MAX.
FEEDBACK
INPUT
OUTPUT
UNREGULATED
DC
SENSE
5V TAP
ERROR
GND
182kΩ
60kΩ
SHUT
DOWN
ERROR
AMPLIFIER
330KΩ
FROM CMOS
OR TTL
1.5 µF
60mV
ERROR
TO CMOS
OR TTL
DETECTION
COMPARATOR
1.23
REF
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LM2954
LINEAR INTEGRATED CIRCUIT
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ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VCC
VALUE
-0.3 ~ +30
-1.5 ~ +30
-0.3 ~ +30
-0.3 ~ +30
+125
UNIT
V
Supply Voltage
Feedback Voltage
Shutdown Voltage
VFB
V
VSHDN
VOUT
TJ
V
Comparator Output Voltage
Junction Temperature
Operating Temperature
Storage temperature
V
°C
°C
°C
TOPR
TSTG
-20 ~ +85
-40 ~ +150
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℃~+70℃ operating temperature range
and assured by design from -20℃~+85℃, characteristic and correlation with static process control.
ꢀ
ELECTRICAL CHARACTERISTICS(TJ=25°C, VIN=6V, IL=100µA, CL=1µF, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT
LM2954-3.3
LM2954-5.0
3.23
4.90
20
3.3
5.0
3.37
5.10
Output Voltage
VOUT TJ=25°C
V
Output Voltage Temperature Coefficient
Line Regulation
TCVO
100 ppm/°C
0.2
△VOUT 6V≦VIN≦30V
△VOUT 100µA≦IL≦300 mA
0.1
0.2
%
Load Regulation
0.5
IL=100mA
VD
400
mV
600
Dropout Voltage
Ground Current
IL=200mA (note 2)
380
450
IL=100µA
0.075 0.12 0.14
mA
IGND
IL=200mA
8
12
14
Dropout Ground Current
Current Limit
ID
VIN=4.5V,IL=100µA
VOUT=0
110
300
170
200
µA
mA
ILIMIT
CL=1µF
CL=200µF
CL=3.3µF
430
160
100
Output Noise (10Hz to 100KHz)
eN
µV
LM2954-ADJ For 8-Pin Version Only
Reference Voltage
VREF
VREF
1.22 1.235 1.25
V
V
VREF≤VOUT≤(VIN-1V),
2.3V≤VIN≤30V,
100µA≤IL≤100mA, TJ≤TJMAX
Reference Voltage
1.19
1.27
40
Feedback Pin Bias Current
Reference Voltage Temperature
Coefficient
IB(FB)
20
50
nA
TCVREF
ppm/°C
Feedback Bias Current Temperature
Coefficient
TCIO
0.1
nA/°C
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LM2954
LINEAR INTEGRATED CIRCUIT
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ELECTRICAL CHARACTERISTICS(Cont.)
TYP.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN.
3.2
MAX. UNIT
Error Comparator
Output Leakage Current
Output Low Voltage
Upper Threshold Voltage
Lower Threshold Voltage
Hysteresis
ILEAK
VOL
VOH=30V
VIN=4.5V, IOL=400µA
1
µA
mV
250
VTHD(UP) (Note 3)
VTHD(LOW) (Note 3)
%VOUT
%VOUT
mV
7.6
VHYS
(Note 3)
15
Shutdown Input
Low (Regulator ON)
High (Regulator OFF)
VSHDN=2.4V
1.3
0.70
Input Logic Voltage
VI(LOG)
II(SHDN)
IO(SHDN)
V
2.0
30
50
µA
µA
Shutdown Pin Input Current
Regulator Output Current Shutdown
VSHDN=30V
450
600
VSHDN≧2V,VIN≦30V, VOUT=0,
3
10
µA
Feedback pin tied to 5V Tap.
Note 1: Additional conditions for 8-pin versions are feedback tied to 5V Tap an Output tied to Output Sense
(VOUT=5V) and VSHDN≦0.8V.
Note 2:Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below
its nominal value measured at 1V differential.
Note 3:Comparator thresholds are expressed in terms of percentage value of voltage output.
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LM2954
LINEAR INTEGRATED CIRCUIT
ꢀ
APPLICATION CIRCUIT (10A Low Dropout Regulator)
For 8 Pins
CURRENT LIMIT
SECTION
+VIN=VOUT+0.5V
0.05Ω
680Ω
2N3906
UTC
470Ω
D65H0
8
4.7MΩ
+VIN
+VOUT 10 A
10kΩ
5
7
ERROR
UTC LM2954
R1
100μF
SD
3
4.7 μF
FB
1%
220Ω
20kΩ
GND
4
V
OUT
R2
1
47Ω
0.033μF
VOUT=1.23V*(1+R1/R2)
For 5V output use internal resistors.Wire pin 6 to 7 and wire pin 2 to +VOUT
For 3 Pins
VIN
VOUT
UTC LM2954-3.3
UTC LM2954-5.0
1 µF
1 µF
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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