UTC M2950/2951
LINEAR INTEGRATED CIRCUIT
250 mA 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. Available in 3-pin TO-92, DIP-8 and SOP-8
packages.
1
TO-92
SOP-8
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.
DIP-8
APPLICATIONS
*Battery powered equipment.
*High efficient linear regulator down to 1.24V.
*Cellular phones.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R102-004,D
UTC M2950/2951
PIN CONFIGURATIONS
LINEAR INTEGRATED CIRCUIT
UTC M2950
1
2
3
OUTPUT
GND
INPUT
TO-92 Plastic Package
Bottom View
OUTPUT
SENSE
1
2
8
7
6
5
INPUT
FEEDBACK
5V TAP
SHUTDOWN
3
UTC
M2951
GND
4
ERROR
SOP-8 OR DIP-8 PACKAGE
FOR UTC M2951
OUTPUT
NC
1
2
8
7
6
5
INPUT
NC
NC
SHUTDOWN
3
UTC
M2950
GND
4
ERROR
SOP-8 OR DIP-8 PACKAGE
FOR UTC M2950
Fig.1
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R102-004,D
UTC M2950/2951
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
UNRAGULATED
DC
FEEDBACK
7
INPUT
8
OUTPUT
1
5V 250mA
MAX.
SENSE
182KΩ
ERROR
AMPLIFIER
60mV
60KΩ
ERROR
1.23
REF
ERROR
DETECTION
COMPARATOR
2
FROM CMOS
OR TTL
SHUT
DOWN
5V TAP
3
6
1.5
µF
330KΩ
5
TO CMOS
OR TTL
GND
4
FOR UTC M2951
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Feedback Voltage
Shutdown Voltage
Comparator Output Voltage
Storage Temperature
Operating Junction Temperature
SYMBOL
Vcc
Vfeedback
Vshutdown
Vco
Tstr
Tj
VALUE
-0.3~+18
-1.5~+18
-0.3~+18
-0.3~+18
-65~+150
-40~+125
UNIT
V
V
V
V
°C
°C
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R102-004,D
UTC M2950/2951
LINEAR INTEGRATED CIRCUIT
TYP.
2.5
3.0
3.3
3.6
5.0
2.5
3.0
3.3
3.6
5.0
2.5
3.0
3.3
3.6
5.0
MAX.
2.55
3.06
3.36
3.67
5.10
2.55
3.06
3.36
3.67
5.10
2.55
3.06
3.36
3.67
5.10
100
0.1
0.1
80
450
120
12
170
200
280
0.2
0.2
150
600
140
22
200
300
430
160
100
ELECTRICAL CHARACTERISTICS
(Tested at Tj=25°C, V
IN
=6V, I
L
=100µA and C
L
=1µF, unless otherwise specified)
PARAMETER
PART NUMBER
TEST CONDITION
MIN.
Output Voltage
UTC M2950-2.5
T
J
=25°C
2.45
UTC M2950-3.0
2.94
UTC M2950-3.3
3.23
UTC M2950-3.6
3.53
UTC M2950-5.0
4.90
UTC M2951
(note 1)
UTC M2950-2.5
-25°C<=T
J<=
<=+85°C
2.45
UTC M2950-3.0
2.94
UTC M2950-3.3
3.23
UTC M2950-3.6
3.53
UTC M2950-5.0
4.90
UTC M2951
(note 1)
Output Voltage
UTC M2950-2.5
100µA<=I
L
<=250 mA
2.45
UTC M2950-3.0
Tj<=Tj(max)
2.94
UTC M2950-3.3
3.23
UTC M2950-3.6
3.53
UTC M2950-5.0
4.90
UTC M2951
(note 1)
Output Voltage
20
Temperature Coefficient
Line Regulation
6V<=V
IN
<=18V
0.03
Load Regulation
100µA<=I
L
<=250 mA
0.04
Dropout Voltage
I
L
=100µA
50
I
L
=250mA (note 2)
380
Ground Current
I
L
=100µA
75
I
L
=250mA
8
Dropout Ground Current
V
IN
=4.5V,I
L
=100µA
110
Current Limit
Vout=0
160
Output Noise 10Hz to
C
L
=1µF
260
100KHz
C
L
=200µF
C
L
=3.3µF
(Bypass=0.01µF
pins 7 to (
UTC M
2951))
UNIT
V
V
V
ppm/°C
%
%
mV
µA
mA
µA
mA
µV
For M2951 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
50
0.1
1.25
1.27
40
V
V
nA
ppm/°C
nA/°C
(Note 4)
Error Comparator
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R102-004,D
UTC M2950/2951
PARAMETER
Output Leakage Current
Output Low Voltage
LINEAR INTEGRATED CIRCUIT
TEST CONDITION
V
OH
=18V
V
IN
=4.5V
I
OL
=400µA
(Note 3)
(Note 3)
(Note 3)
15
3.2
7.6
MIN.
TYP.
MAX.
1
250
PART NUMBER
UNIT
µA
mV
Upper Threshold
Voltage
Lower Threshold
Voltage
Hysteresis
%V
O
%V
O
mV
Shutdown Input
Input Logic Voltage
Low(Regulator ON)
High(Regulator OFF)
V
shutdown
=2.4V
V
shutdown
=18V
Vshutdown>=2V,V
IN
<=18V,
V
out
=0,
Feedback pin tied to 5V Tap.
2.0
30
450
3
50
600
10
µA
µA
µA
1.3
0.70
V
Shutdown Pin Input
Current
Regulator Output
Current Shutdown
Note 1: Additional conditions for 8-pin versions are feedback tied to 5V Tap an Output tied to Output Sense
(V
out
=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≤I
L
≤250mA,
T
J
≤T
JMAX
UTC
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R102-004,D
