LM2954L-33-S08-T [UTC]
300mA LOW-DROPOUT VOLTAGE REGULATOR;型号: | LM2954L-33-S08-T |
厂家: | Unisonic Technologies |
描述: | 300mA LOW-DROPOUT VOLTAGE REGULATOR |
文件: | 总7页 (文件大小:271K) |
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
300mA 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.
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
Ordering Number
Lead Free
Pin assignment
Package
Packing
Halogen Free
1
I
2
G
O
3
O
I
LM2954L-xx-AA3-R
LM2954L-xx-AA3-A-R
LM2954L-xx-D08-T
LM2954L-xx-S08-R
LM2954L-xx-T92-B
LM2954L-xx-T92-K
LM2954G-xx-AA3-R
LM2954G-xx-AA3-A-R
LM2954G-xx-D08-T
LM2954G-xx-S08-R
LM2954G-xx-T92-B
LM2954G-xx-T92-K
SOT-223
SOT-223
DIP-8
Tape Reel
Tape Reel
Tube
G
refer to Pin
Configurations
SOP-8
TO-92
Tape Reel
Tape Box
Bulk
O
O
G
G
I
I
TO-92
Note: Pin assignment: I: VIN O: VOUT
G: GND
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LM2954
LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
33:3.3V
50:5.0V
SOT-223
UTC
3.3:3.3V
5.0:5.0V
L: Lead Free
G: Halogen Free
LM2954
TO-92
Voltage Code
Data Code
1
DIP-8
3.3:3.3V
5.0:5.0V
AD: ADJ
SOP-8
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LM2954
LINEAR INTEGRATED CIRCUIT
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
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LM2954
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VCC
VALUE
-0.3 ~ 28
-1.5 ~ 28
-0.3 ~ 28
-0.3 ~ 28
+125
UNIT
V
Supply Voltage
Feedback Voltage
VFB
V
Shutdown Voltage
VSHDN
VOUT
TJ
V
Comparator Output Voltage
Junction Temperature
Operating Temperature
Storage temperature
V
°C
°C
°C
TOPR
TSTG
-40 ~ +85
-40 ~ +150
Notes: 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(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
△VOUT 6V≦VIN≦28V
0.1
0.2
0.2
%
Load Regulation
△VOUT 100μA≦IL≦300mA
0.5
IL=100mA
VD
400
mV
600
Dropout Voltage
Ground Current
IL=200mA (Note 2)
380
300
450
IL=100μA
IGND
0.12 0.23
mA
IL=200μA
12
14
Dropout Ground Current
Current Limit
ID
VIN=4.5V, IL=100μA
VOUT=0
560
650
μA
ILIMIT
mA
CL=1μF
430
160
100
Output Noise (10Hz to 100KHz)
eN
μV
CL=200μF
CL=3.3μF
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LM2954
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
LM2954-ADJ FOR 8-PIN VERSION ONLY
PARAMETER
Reference Voltage
SYMBOL
VREF
TEST CONDITIONS
VREFVOUT(VIN-1V),
MIN
TYP
MAX UNIT
1.22 1.235 1.25
V
Reference Voltage
VREF
2.3VVIN18V,
100μAIL100mA, TJTJMAX
1.19
1.27
40
V
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
ERROR COMPARATOR
Output Leakage Current
Output Low Voltage
IO(LEAK) VOH=28V
1
μA
mV
VOL
VIN=4.5V, IOL=400μA
250
Upper Threshold Voltage
Lower Threshold Voltage
Hysteresis
VTHD(UP) (Note 3)
VTHD(LOW) (Note 3)
3.2
2.0
%VOUT
7.6 %VOUT
mV
VHYS
(Note 3)
15
SHUTDOWN INPUT
Low (Regulator ON)
High (Regulator OFF)
VSHDN=2.4V
1.3
0.70
V
Input Logic Voltage
VI(LOG)
II(SHDN)
IO(SHDN)
30
50
μA
μA
Shutdown Pin Input Current
Regulator Output Current Shutdown
VSHDN=28V
450
600
VSHDN≧2V,VIN≦28V, 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.
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.
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
4.7μF
FB
1%
220Ω
20kΩ
GND VOUT
R2
4
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
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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