LP2951G-S08-T [UTC]
100 mA LOW-DROPOUT VOLTAGE REGULATOR; 百毫安低压差稳压器
| 型号： | LP2951G-S08-T |
| 厂家： | 
Unisonic Technologies |
| 描述： | 100 mA LOW-DROPOUT VOLTAGE REGULATOR |
| 文件： | 总7页 (文件大小：289K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
LP2950/2951
LINEAR INTEGRATED CIRCUIT
100 mA LOW-DROPOUT
VOLTAGE REGULATOR
1
1
DESCRIPTION
TO-92
TO-252
The UTC LP2950/2951 are monolithic integrated voltage
regulators with low dropout voltage, and low quiescent current. It
includes many features that suitable for different applications.
FEATURES
* Fixed output versions, 2.5V, 3V, 3.3V, 3.6V and 5V, are
available.
* High accuracy output voltage.
SOP-8
DIP-8
* Extremely low quiescent current and dropout voltage.
* Extremely tight load and line regulation.
* Current and thermal limiting.
Lead-free:
Halogen-free: LP2950G-XX/LP2951G
LP2950L-XX/LP2951L
* Very low temperature coefficient.
* Logic controlled shutdown and err flog available for 8 pin
package.
* Output voltage programmable for LP2951.
ORDERING INFORMATION
Ordering Number
Package
Packing
Normal
Lead Free
Halogen Free
LP2950-xx-D08-T
LP2950-xx-S08-T
LP2950-xx-S08-R
LP2950-xx-T92-B
LP2950-xx-T92-K
LP2950-xx-TN3-T
LP2950-xx-TN3-R
LP2951-D08-T
LP2950L-xx-D08-T
LP2950L-xx-S08-T
LP2950L-xx-S08-R
LP2950L-xx-T92-B
LP2950L-xx-T92-K
LP2950L-xx-TN3-T
LP2950L-xx-TN3-R
LP2951L-D08-T
LP2950G-xx-D08-T
LP2950G-xx-S08-T
LP2950G-xx-S08-R
LP2950G-xx-T92-B
LP2950G-xx-T92-K
LP2950G-xx-TN3-T
LP2950G-xx-TN3-R
LP2951G-D08-T
DIP-8
SOP-8
SOP-8
TO-92
TO-92
TO-252
TO-252
DIP-8
Tube
Tube
Tape Reel
Tape Box
Bulk
Tube
Tape Reel
Tube
LP2951-S08-T
LP2951L-S08-T
LP2951G-S08-T
SOP-8
SOP-8
Tube
LP2951-S08-R
LP2951L-S08-R
LP2951G-S08-R
Tape Reel
Note: Pin Assignment: I:VIN O:VOUT G:GND
OUTPUT VOLTAGE CODE(For LP2950)
OUTPUT VOLTAGE
CODE
25
2.5V
3.0V
3.3V
3.6V
5.0V
30
33
36
50
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QW-R102-001.L
LP2950/2951
LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATIONS
UTC LP2950
1
2
3
UTC LP2950
OUTPUT
INPUT
GND
INPUT
GND
OUTPUT
TO-92 Plastic Package Bottom View
SOT-252 Package
OUTPUT
SENSE
1
2
3
4
8
7
6
5
INPUT
OUTPUT
NC
1
2
3
4
8
7
6
5
INPUT
NC
FEEDBACK
5V TAP
UTC
LP2950
UTC LP2951
SHUTDOWN
GND
SHUTDOWN
GND
NC
ERROR
ERROR
SOP-8 OR DIP-8 PACKAGE FOR UTC
LP2951
SOP-8 OR DIP-8 PACKAGE FOR UTC
LP2950
BLOCK DIAGRAM
5V 150mA
MAX.
UNREGULATED
DC
FEEDBACK
INPUT
OUTPUT
7
8
1
SENSE
5V TAP
ERROR
GND
2
6
5
4
182kΩ
60kΩ
SHUT
DOWN
ERROR
AMPLIFIER
330KΩ
FROM CMOS
OR TTL
3
1.5 μF
60mV
ERROR
DETECTION
COMPARATOR
TO CMOS
OR TTL
1.23
REF
FOR UTC LP2951
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LP2950/2951
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VCC
RATINGS
-0.3 ~ +30
UNIT
V
Supply Voltage
Feedback Voltage
VFB
-1.5 ~ +30
V
Shutdown Voltage
VSHDN
PD
-0.3 ~ +30
V
Power Dissipation
Internally Limited
-40 ~ +125
-65 ~ +150
W
Operation Junction Temperature
Storage Temperature
TJ
°C
°C
TSTG
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
SYMBOL
RATING
160
92
UNIT
TO-92
TO-252
SOP-8
DIP-8
Junction-to-Ambient
Junction-to-Case
θJA
°C/W
180
105
83
TO-92
TO-252
SOP-8
θJC
°C/W
6
45
ELECTRICAL CHARACTERISTICS (TJ=25°C, VIN=6V, IL=100μA, CL=1μF, unless otherwise specified.)
For All Version:
PARAMETER
SYMBOL
VOUT
TEST CONDITION
TJ=25°C (Note 1)
-25°C≦TJ≦+85°C(Note 1)
MIN
TYP
MAX
UNIT
VOUT×0.98 VOUT VOUT×1.02
VOUT×0.98 VOUT VOUT×1.02
V
V
V
Output Voltage
Output Voltage
VOUT 100μA≦IL≦100mA, TJ≦TJ(max) VOUT×0.98 VOUT VOUT×1.02
Output Voltage Temperature
Coefficient
TcVo
20
100
ppm/°C
ΔVOUT
ΔVOUT
Line Regulation
6V≦VIN≦30V
100μA≦IL≦100 mA
IL=100μA
IL=100mA (Note 2)
IL=100μA
0.03
0.04
50
0.1
0.1
80
0.2
0.2
%
%
Load Regulation
150
600
140
14
VD
IG
Dropout Voltage
Ground Current
mV
380
75
450
120
12
μA
mA
μA
IL=100mA
8
Dropout Ground Current
Current Limit
VIN=4.5V,IL=100μA
VOUT=0
110
160
170
200
200
220
430
160
100
ILIMIT
eN
mA
Output Noise (10Hz ~ 100KHz)
(Bypass=0.01μF pins 7 to 1
(LP2951))
CL=1μF
CL=200μF
CL=3.3μF
μV
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LP2950/2951
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For UTC LP2951 8-Pin Version Only
PARAMETER
Reference Voltage
SYMBOL
VREF
VREF
TEST CONDITION
MIN
1.22
1.19
TYP
MAX
1.25
1.27
40
UNIT
V
1.235
Reference Voltage
Over temperature(Note 4)
V
Feedback pin Bias Current
Reference Voltage Temperature
Coefficient
IFB
20
50
nA
VREF(TC)
IFB(TC)
ppm/°C
nA/°C
Feedback Bias Current
Temperature Coefficient
Error Comparator
0.1
Output Leakage Current
Output Low Voltage
IO(LEAK) VOH=30V
1
μA
mV
VOL
VIN=4.5V, IOL=400μA
250
VTHU
VTHL
VHYS
Upper
Threshold Voltage
Lower
(Note 3)
(Note 3)
(Note 3)
3.2
2.0
%VO
%VO
mV
7.6
Hysteresis
15
Shutdown Input
Low
Input Logic Voltage
High
VIL
VIH
Regulator ON
Regulator OFF
VSHDN=2.4V
1.3
0.70
V
30
50
μA
μA
Shutdown Pin Input Current
ISHDN
IDFF
VSHDN=30V
450
600
Regulator Output Current
Shutdown
VSHDN≧2V, VIN≦30V, VOUT=0
3
10
μA
Feedback pin tied to 5V Tap.
Note: 1.Additional conditions for 8-pin versions are FB pin tied to 5VTAP, Output tied to 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.
4.VREF≤VOUT≤(VIN-1V), 2.3V≤VIN≤30V, 100μA≤IL≤100mA, TJ≤TJ(MAX)
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LP2950/2951
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
10 Ampere Low Dropout Regulator
CURRENT LIMIT
SECTION
+VIN=Vout+0.5V
0.05
680
2N3906
UTC
D65H0
470
8
4.7M
+VIN
+VOUT 100m A
100 F
10k
5
7
ERROR
UTC LP2951
R1
SD
4.7 F
3
FB
1%
220
GND
4
Vout
R2
20k
1
47
0.033 F
VOUT=1.23V*(1+R1/R2)
For 5V output use internal resistors.Wire pin 6 to 7 and wire pin 2 to +VOUT
Fig.1
UTC LP2950-2.5
V
IN
V
OUT
UTC LP2950-3.0
UTC LP2950-3.3
UTC LP2950-3.6
UTC LP2950-5.0
Fig.2
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QW-R102-001.L
LP2950/2951
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
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LP2950/2951
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS(Cont.)
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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