UNISONIC TECHNOLOGIES CO.,
M2950/2951
LINEAR INTEGRATED CIRCUIT
250mA LOW-DROPOUT
VOLTAGE REGULATOR
„
DESCRIPTION
The UTC M2950/2951 is a monolithic integrated voltage
regulator 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.
* 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 err flog available for 8 pin
package.
* Output voltage programmable for M2951
„
ORDERING INFORMATION
Ordering Number
Normal
Lead Free
M2950-xx-D08-T
M2950L-xx-D08-T
M2950-xx-S08-T
M2950L-xx-S08-T
M2950-xx-S08-R
M2950L-xx-S08-R
M2950-xx-T92-B
M2950L-xx-T92-B
M2950-xx-T92-K
M2950L-xx-T92-K
M2951-D08-T
M2951L-D08-T
M2951-S08-T
M2951L-S08-T
M2951-S08-R
M2951L-S08-R
Note: Pin Assignment: I:VIN O:VOUT G:GND
„
Lead-free:
M2950-XX/2951L
Halogen-free: M2950-XX/2951G
Halogen Free
M2950G-xx-D08-T
M2950G-xx-S08-T
M2950G-xx-S08-R
M2950G-xx-T92-B
M2950G-xx-T92-K
M2951G-D08-T
M2951G-S08-T
M2951G-S08-R
Package
Packing
DIP-8
SOP-8
SOP-8
TO-92
TO-92
DIP-8
SOP-8
SOP-8
Tube
Tube
Tape Reel
Tape Box
Bulk
Tube
Tube
Tape Reel
OUTPUT VOLTAGE CODE(For M2950)
OUTPUT VOLTAGE
2.5V
3.0V
3.3V
3.6V
5.0V
CODE
25
30
33
36
50
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Copyright © 2008 Unisonic Technologies Co.,
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QW-R102-004.E
M2950/2951
„
LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATIONS
UTC M2950
1
2
OUTPUT
3
INPUT
GND
TO-92 Plastic Package Bottom View
OUTPUT
1
SENSE
2
8
INPUT
7
FEEDBACK
OUTPUT
1
NC
2
SHUTDOWN 3
6
5V TAP
4
5
ERROR
SOP-8 OR DIP-8 PACKAGE FOR UTC
LP2951
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
INPUT
7
NC
6
NC
5
ERROR
UTC
M2950
UTC M2951
GND
8
SHUTDOWN 3
GND
4
SOP-8 OR DIP-8 PACKAGE FOR UTC
LP2950
2 of 8
QW-R102-004.E
M2950/2951
„
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
FOR UTC M2951
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R102-004.E
M2950/2951
„
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.3~+18
V
Feedback Voltage
VFB
-1.5~+18
V
Shutdown Voltage
VSHDN
-0.3~+18
V
Comparator Output Voltage
VCO
-0.3~+18
V
Operation Junction Temperature
TJ
-40~+125
°C
Storage Temperature
TSTG
-65~+150
°C
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
TO-92
SOP-8
DIP-8
TO-92
SOP-8
Junction-to-Ambient
Junction-to-Case
„
RATING
160
180
105
83
45
θJA
θJC
UNIT
°C/W
°C/W
ELECTRICAL CHARACTERISTICS (TJ=25°C, VIN=6V, IL=100μA, CL=1μF, unless otherwise specified.)
For All Versions:
PARAMETER
SYMBOL
Output Voltage
VOUT
Output Voltage
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
VOUT
TcVo
ΔVOUT
ΔVOUT
Dropout Voltage
VD
Ground Current
IG
Dropout Ground Current
Current Limit
Output Noise (10Hz ~ 100KHz)
(Bypass=0.01μF pins 7 to 1
(UTC M2951))
TEST CONDITION
TJ=25°C (Note 1)
-25°C≦TJ≦+85°C(Note 1)
100μA≦IL≦250mA, TJ≦TJ(MAX)
ILIMIT
eN
For UTC M2951 8-Pin Version Only
PARAMETER
SYMBOL
Reference Voltage
VREF
Reference Voltage
VREF
Feedback pin Bias Current
IFB
Reference Voltage Temperature
VREF(TC)
Coefficient
Feedback Bias Current
IFB(TC)
Temperature Coefficient
ERROR COMPARATOR
Output Leakage Current
IO(LEAK)
Output Low Voltage
VOL
Upper
VTHU
Threshold Voltage
Lower
VTHL
Hysteresis
VHYS
VOUT×0.98
VOUT×0.98
VOUT×0.98
TYP
VOUT
VOUT
VOUT
20
6V≦VIN≦18V
100μA≦IL≦=250 mA
IL=100μA
IL=250mA (Note 2)
IL=100μA
IL=250mA
VIN=4.5V, IL=100μA
VOUT=0V
CL=1μF
CL=200μF
CL=3.3μF
TEST CONDITION
Over temperature(Note 4)
0.03
0.04
50
380
75
8
110
160
260
MIN
1.22
1.19
0.1
0.1
80
450
120
12
170
200
280
TYP
1.235
20
(Note 3)
(Note 3)
MAX
VOUT×1.02
UNIT
V
V
V
100
ppm/°C
0.2
0.2
150
600
140
22
200
300
430
160
100
%
%
VOUT×1.02
VOUT×1.02
MAX
1.25
1.27
40
mV
μA
mA
μA
mA
μV
UNIT
V
V
nA
50
ppm/°C
0.1
nA/°C
VOH=18V
VIN=4.5V, IOL=400μA
UNISONIC TECHNOLOGIES CO., LTD
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MIN
1
250
3.2
7.6
15
μA
mV
%VO
mV
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QW-R102-004.E
M2950/2951
LINEAR INTEGRATED CIRCUIT
PARAMETER
SHUTDOWN INPUT
Input Logic Voltage
SYMBOL
Low
High
VIL
VIH
Shutdown Pin Input Current
ISHDN
Regulator Output Current
Shutdown
IDFF
„
TEST CONDITION
Regulator ON
Regulator OFF
VSHDN=2.4V
VSHDN=18V
VSHDN≧2V, VIN≦18V, VOUT=0V
Feedback pin tied to 5V Tap.
MIN
TYP
MAX
1.3
0.7
30
450
50
600
μA
3
10
μA
TYP
MAX
UNIT
2.0
UNIT
V
ELECTRICAL CHARACTERISTICS (Cont.)
PARAMETER
SHUTDOWN INPUT
SYMBOL
MIN
Regulator ON
1.3
0.7
V
Regulator OFF
2.0
VSHDN=2.4V
30
50
Shutdown Pin Input Current
ISHDN
μA
VSHDN=18V
450
600
VSHDN≧2V, VIN≦18V, VOUT=0V
Regulator Output Current
IDFF
3
10
μA
Shutdown
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.
4. VREF≦VOUT≦(VIN-1V), 2.3V≦VIN≦30V, 100μA≦IL≦250mA, TJ≦TJ(MAX)
Input Logic Voltage
Low
High
TEST CONDITION
VIL
VIH
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QW-R102-004.E
M2950/2951
„
LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT
10 Ampere Low Dropout Regulator
CURRENT LIMIT
SECTION
+VIN=VOUT+0.5V
0.05
680
2N3906
UTC
D65H0
470
8
+VIN
4.7M
ERROR
5
UTC M2951
3
220
20k
SD
GND
4
FB
VOUT
1
+VOUT 250m A
10k
R1
7
100
1%
4.7
F
F
R2
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
VIN
UTC M2950-2.5
UTC M2950-3.0
UTC M2950-3.3
UTC M2950-3.6
UTC M2950-5.0
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
VOUT
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QW-R102-004.E
M2950/2951
„
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
Input Current
Dropout Characteristics
6
310
290
5
4
RL=20
270
RL=50k
250
RL=20
3
230
210
2
190
1
0
170
0
1
3
4
2
Input Voltage(V)
5
6
150
0
2
4
6
8
Input Voltage(V)
10
12
Ground Pin Current
Dropout Voltage
130
600
120
IL=250mA
500
110
400
100
300
90
IL=100 A
80
100
70
50
60
0
-75 -50 -25
0 25 50 75 100 125 150
Temperature(°С)
VIN=6V
IL=100 A
50
-75 -50 -25
0 25 50 75 100 125 150
Temperature(°С)
Shutdown Threshold Voltage
Ground Pin Current
1.8
10
1.6
9
VIN=6V
IL=250mA
8
1.4
1.2
1.0
7
0.8
6
-75 -50 -25
0 25 50 75 100 125 150
Temperature(°С)
UNISONIC TECHNOLOGIES CO., LTD
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0.6
-75 -50 -25
0 25 50 75 100 125 150
Temperature(°С)
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M2950/2951
„
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS(Cont.)
Dropout Voltage
Short Circuit Current
500
300
400
290
280
300
270
200
260
250
100
240
230
-75 -50 -25
0 25 50 75 100 125 150
Temperature(°С)
0
100
150
200
Output Current(mA)
250
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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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