UTCLP2951 [UTC]
100 mA LOW-DROPOUT VOLTAGE REGULATOR; 百毫安低压差稳压器
| 型号： | UTCLP2951 |
| 厂家： | 
Unisonic Technologies |
| 描述： | 100 mA LOW-DROPOUT VOLTAGE REGULATOR |
| 文件： | 总7页 (文件大小：162K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT
100 mA LOW-DROPOUT VOLTAGE
REGULATOR
1
TO-92
SOP-8
DIP-8
DESCRIPTION
The UTC LP2950/2951 is a monolithic integrated voltage
regulator with low dropout voltage, and low quiescent current.
It includes many features that suitable for different
applications. Available in 3-pin TO-92, DIP-8 and SOP-8
packages.
FEATURES
*High accuracy 2.5, 3.0, 3.3, 3.6 or 5V fixed output for
TO-92, SOP-8 package.
*Extremely low quiescent current and dropout voltage.
*Extremely tight load and line regulation.
*Current and thermal limiting.
*Very low temperature coefficient.
*Logic controlled shutdown and error flag available for DIP
and SOP package.
*Output voltage programmable for DIP and SOP package.
APPLICATIONS
*Battery powered equipment.
*High efficient linear regulator down to 1.24V.
*Cellular phones.
ORDERING INFORMATION
PART NUMBER
UTC LP2950-5.0
UTC LP2950-3.0
UTC LP2950-3.3
UTC LP2950-3.6
UTC LP2950-2.5
UTC LP2950-5.0
UTC LP2950-3.0
UTC LP2950-3.3
UTC LP2951
TEMPERATURE RANGE
-40 ~ +125°C
-40 ~ +125°C
-40 ~ +125°C
-40 ~ +125°C
-40 ~ +125°C
-40 ~ +125°C
-40 ~ +125°C
-40 ~ +125°C
-40 ~ +125°C
-40 ~ +125°C
PACKAGE
ACCURACY
2.0%
3-Pin TO-92 plastic
3-Pin TO-92 plastic
3-Pin TO-92 plastic
3-Pin TO-92 plastic
3-Pin TO-92 plastic
8-Pin SOP-8 plastic
8-Pin SOP-8 plastic
8-Pin SOP-8 plastic
8-Pin SOP-8 plastic
8-Pin DIP-8 plastic
1.0%
1.0%
2.0%
1.0%
2.0%
1.0%
1.0%
2.0%
UTC LP2951
2.0%
UTC UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R102-001,E
UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATIONS
UTC LP2950
1
2
3
OUTPUT
INPUT
GND
TO-92 Plastic Package
Bottom View
OUTPUT
SENSE
1
2
3
4
8
7
6
5
INPUT
FEEDBACK
5V TAP
UTC
LP2951
SHUTDOWN
GND
ERROR
SOP-8 OR DIP-8 PACKAGE
FOR UTC LP2951
OUTPUT
NC
1
2
3
4
8
7
6
5
INPUT
NC
UTC
LP2950
SHUTDOWN
GND
NC
ERROR
SOP-8 OR DIP-8 PACKAGE
FOR UTC LP2950
Fig.1
UTC UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R102-001,E
UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
5V 150mA
INPUT
FEEDBACK 7
8
OUTPUT 1
MAX.
UNRAGULATED
DC
SENSE2
182k
Ω
SHUT
ERROR
5V TAP
6
330KΩ
DOWN
AMPLIFIER
FROM CMOS
OR TTL
3
1.5
µ
F
60mV
60kΩ
ERROR
5
ERROR
TO CMOS
OR TTL
DETECTION
1.23
COMPARATOR
GND
4
REF
FOR UTC LP2951
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
SYMBOL
Vcc
VALUE
UNIT
V
V
V
V
°C
°C
-0.3~+18
-1.5~+18
-0.3~+18
-0.3~+18
-65~+150
-40~+125
Feedback Voltage
Shutdown Voltage
Comparator Output Voltage
Storage Temperature
Vfeedback
Vshutdown
Vco
Tstr
Tj
Operating Junction Temperature
UTC UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R102-001,E
UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS
(Tested at Tj=25°C,VIN=6V,IL=100µA and CL=1µF, unless otherwise specified)
PARAMETER
Output Voltage
PART NUMBER
UTC LP2950-2.5
UTC LP2950-3.0
UTC LP2950-3.3
UTC LP2950-3.6
UTC LP2950-5.0
UTC LP2951
UTC LP2950-2.5
UTC LP2950-3.0
UTC LP2950-3.3
UTC LP2950-3.6
UTC LP2950-5.0
UTC LP2951
TEST CONDITION
MIN.
2.47
2.97
3.27
3.53
4.90
TYP.
2.5
3.0
3.3
3.6
5.0
MAX.
2.53
3.03
3.33
3.67
5.10
UNIT
V
TJ=25°C
(note 1)
-25°C<=TJ<=<=+85°C
2.47
2.97
3.27
3.53
4.90
2.5
3.0
3.3
3.6
5.0
2.53
3.03
3.33
3.67
5.10
V
V
(note 1)
Output Voltage
UTC LP2950-2.5
UTC LP2950-3.0
UTC LP2950-3.3
UTC LP2950-3.6
UTC LP2950-5.0
UTC LP2951
100µA<=IL<=100 mA
Tj<=Tj(max)
2.47
2.97
3.27
3.53
4.90
2.5
3.0
3.3
3.6
5.0
2.53
3.03
3.33
3.67
5.10
(note 1)
Output Voltage
20
100
ppm/°C
Temperature Coefficient
Line Regulation
6V<=VIN<=18V
100µA<=IL<=100 mA
IL=100µA
0.03
0.04
50
0.1
0.1
80
0.2
0.2
150
%
%
Load Regulation
Dropout Voltage
mV
IL=100mA (note 2)
IL=100µA
IL=100mA
380
75
450
120
12
170
200
600
140
14
200
220
430
Ground Current
µA
mA
µA
mA
µV
8
Dropout Ground Current
Current Limit
Output Noise 10Hz to
100KHz
VIN=4.5V,IL=100µA
Vout=0
CL=1µF
110
160
CL=200µF
CL=3.3µF
(Bypass=0.01µF
pins 7 to (utc2951))
160
100
For LP2951 8-Pin version only
Reference Voltage
Reference Voltage
Feedback pin Bias
Current
Reference Voltage
Temperature Coefficient
Feedback Bias Current
temperature Coefficient
1.22
1.19
1.235
20
1.25
1.27
40
V
V
nA
(Note 4)
50
ppm/°C
nA/°C
0.1
UTC UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R102-001,E
UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT
PARAMETER
Error Comparator
PART NUMBER
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Output Leakage Current
Output Low Voltage
VOH=18V
VIN=4.5V
IOL=400µA
1
250
µA
mV
Upper Threshold
Voltage
Lower Threshold
Voltage
Hysteresis
Shutdown Input
(Note 3)
(Note 3)
(Note 3)
3.2
%VO
%VO
mV
7.6
15
1.3
30
Input Logic Voltage
V
Low(Regulator ON)
High(Regulator OFF)
Vshutdown=2.4V
0.70
50
2.0
Shutdown Pin Input
Current
µA
Vshutdown=18V
450
3
600
10
µA
µA
Regulator Output
Current Shutdown
Vshutdown>=2V,VIN<=18V,
Vout=0,
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 Vshutdown<=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.
Note 4:Vref≤Vout≤(Vin-1V), 2.3V≤Vin≤30V, 100µA≤IL≤100mA, TJ≤TJMAX
UTC UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R102-001,E
UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT (10 Ampere Low Dropout Regulator)
CURRENT
LIMIT
SECTION
+VIN=Vout+0.5V
0.05Ω
680Ω
2N3906
UTC
D65H0
470Ω
8
+VIN
4.7MΩ
+VOUT 100m A
10k
Ω
5
7
ERROR
UTC LP2951
R1
R2
100µF
SD
3
4.7µF
FB
Vout
1%
220Ω
GND
4
20kΩ
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
Fig.2
UTC LP2950-2.5
Vin
Vout
UTC LP2950-3.0
UTC LP2950-3.3
UTC LP2950-3.6
UTC LP2950-5.0
Fig.3
UTC UNISONIC TECHNOLOGIES CO., LTD.
6
QW-R102-001,E
UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT
TYPICAL PERFORMANCE CHARACTERISTICS
Fig. 6 Dropout Voltage
Fig.5 Input Current
Fig.4 Dropout Characteristics
6
5
4
3
2
1
0
150
140
130
120
110
100
90
600
500
RL
=50Ω
IL=100mA
RL=50kΩ
400
300
80
RL=50Ω
70
60
IL=100µA
50
＞
100
40
30
20
50
0
10
0
0
1
2
3
4
5
6
7
8
9 10 11 12
-75 -50 -25
0
25
50 75
100 125 150
0
1
3
4
5
6
2
INPUT VOLTAGE(V)
INPUT VOLTAGE(V)
TEMPERATURE(°C)?
Fig. 7 Ground Pin Current
Fig. 8 Ground Pin Current
Fig. 9 Shutdown Threshold Voltage
8
7
6
1.8
120
110
100
90
1.6
1.4
1.2
V
IN=6V
VIN=6V
IL=100mA
IL=100µA
80
70
1.0
5
4
60
0.8
0.6
50
-75 -50 -25
0
25
50 75
100 125 150
-75 -50 -25
0
25
50 75
100 125 150
-75 -50 -25
0
25
50 75
100 125 150
TEMPERATURE(°C)?
TEMPERATURE(°C)?
TEMPERATURE(°C)
Fig. 10 Short Circuit Current
Fig. 11 Dropout Voltage
500
170
160
400
300
200
150
140
130
120
110
100
0
100
10
1
OUTPUT CURRENT(mA)
0.1
100
-75 -50 -25
0
25
50 75
100 125 150
TEMPERATURE(°C)?
UTC UNISONIC TECHNOLOGIES CO., LTD.
7
QW-R102-001,E
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