Page 1
FIXED 2.5 AND 5 VOLT
MINIATURE VOLTAGE REGULATORS
ISSUE 4 - MARCH 2002
ZMR SERIES
DEVICE DESCRIPTION
The ZMR series of three terminal fixed
positive voltage regulators feature internal
current limit and will shut down under
thermal overload conditions making the
devices difficult to destroy.
The circuit design offers an exceptionally
low quiescent current, only 30µA for the 2.5
volt device, ideal for low power applications.
The initial devices in the series regulate to
2.5 or 5 volts with a drive capability up to
50mA, however, the flexible design will
allow other voltage selections to be made.
The device is designed with space saving in
mind and is available in the small outline
SOT23 package. The device is also available
in through hole TO92 package.
SCHEMATIC DIAGRAM
FEATURES
Small outline SOT23 package
•
TO92 package
•
2.5V and 5V output
•
22.5V maximum input voltage
•
(ZMR25H)
25V maximum input voltage (ZMR50H)
•
Output current up to 50mA
•
Very low Quiesent current (30µA)
•
Unconditionally stable
•
Other output voltages possible
•
Internal short circuit current limit
•
VOLTAGE RANGE
ZMR250 2.5V
ZMR500 5.0V
ZMR25H 2.5V
ZMR50H 5.0V
Vin
Vout
Gnd
4-104
Page 2
ZMR SERIES
ABSOLUTE MAXIMUM RATINGS
Input voltage (ZMR25H) 22.5V ZMR250 20V
Package power dissipation SOT23 500mW (Note 3)
=25 °C) TO92 600mW
(T
amb
Output current (I
Operating temperature -55 to 125°C
Storage temperature -65 to 150°C
Note:
1. The maximum operating input voltage and output current of the device will be governed by
the maximum power dissipation of the selected package. Maximum package power dissipation
is specified at 25 °C and must be linearly derated to zero at T
2. The following data represents pulse test conditions with junction temperatures as indicated at
the initiation of the test. Continuous operation of the devices with the stated conditions might
exceed the power dissipation limits of the chosen package.
3. Maximum power dissipation for the SOT23 package, is calculated assuming that the device is
mounted on a ceramic substrate measuring 15 x 15 x 0.6mm.
ZMR25H
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated):T
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
V
∆V
∆V
l
∆l
V
∆V
/∆V
in
V
∆V
O
(ZMR50H) 25V ZMR500 20V
) 100mA
O
=125°C.
amb
=25°C, IO=10mA, Vin=6.5V
j
Output Voltage 2.438 2.5 2.563 V
O
I
=0 to 50mA
O
=-55 to 125°C
T
j
V
=4.5 to 22.5V
in
=0 to 50mA
I
O
=-55 to 125°C
T
j
Line Regulation Vin=4.5 to 22.5V 5 15 mV
O
Load Regulation IO=0 to 50mA
O
Supply Current Tj=-55 to 125°C3040
s
Supply Current Change IO=0 to 50mA
s
Output Noise Voltage f=10Hz to 10KHz 65
n
Ripple Rejection Vin=6.3 to 18V
O
=0 to 10mA
I
O
=4.5 to 22.5V
V
in
2.360 2.640 V
2.360 2.640 V
20
30 mV
12
1
2
±10
10
f=120Hz 55 75 dB
Input Voltage Required
in
To Maintain Regulation 4.2 3.9 V
/∆T
Average Temperature
Coefficient of V
O
IO=5.0mA
=-55 to 125°C 0.275 0.700 mV/°C
T
j
mV
µA
µA
µA
µV rms
4-105
Page 3
ZMR SERIES
ZMR50H
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated):T
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
V
Output Voltage 4.875 5 5.125 V
O
I
=0 to 50mA
O
=-55 to 125°C
T
j
V
=7 to 25V
in
=0 to 50mA
I
O
=-55 to 125°C
T
j
∆V
Line Regulation Vin=7 to 25V 5 15 mV
O
∆V
Load Regulation IO=0 to 50mA
∆V
∆V
O
l
Supply Current Tj=-55 to 125°C5070
s
∆l
Supply Current Change IO=0 to 50mA
s
V
Output Noise Voltage f=10Hz to 10KHz 90
n
/∆V
Ripple Rejection Vin=8 to 18V
in
O
V
Input Voltage Required
in
To Maintain Regulation 7 6.7 V
/∆T
Average Temperature
O
Coefficient of V
O
=0 to 10mA
I
O
=7 to 25V
V
in
f=120Hz
IO=5.0mA
=-55 to 125°C 0.275 0.700 mV/°C
T
j
=25°C, IO=10mA, Vin=10V
j
4.780 5.160 V
4.780 5.175 V
25
40 mV
15
1
2
±10
10
55 72
mV
µA
µA
µA
µV rms
dB
4-106
Page 4
ZMR SERIES
ZMR250
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated):T
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
V
Output Voltage 2.438 2.5 2.563 V
O
I
=0 to 50mA
O
=-55 to 125°C
T
j
V
=4.5 to 20V
in
=0 to 50mA
I
O
=-55 to 125°C
T
j
∆V
Line Regulation Vin=4.5 to 20V 5 15 mV
O
∆V
Load Regulation IO=0 to 50mA
∆V
∆V
O
l
Supply Current Tj=-55 to 125°C3040
s
∆l
Supply Current Change IO=0 to 50mA
s
V
Output Noise Voltage f=10Hz to 10KHz 65
n
/∆V
Ripple Rejection Vin=6.3 to 18V
in
O
V
Input Voltage Required
in
To Maintain Regulation 4.2 3.9 V
/∆T
Average Temperature
O
Coefficient of V
O
=0 to 10mA
I
O
=4.5 to 20V
V
in
f=120Hz 55 75 dB
IO=5.0mA
=-55 to 125°C 0.275 0.700 mV/°C
T
j
=25°C, IO=10mA, Vin=6.5V
j
2.360 2.640 V
2.360 2.640 V
20
30 mV
12
1
2
±10
10
mV
µA
µA
µA
µV rms
4-107
Page 5
ZMR SERIES
ZMR500
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated):T
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
V
Output Voltage 4.875 5 5.125 V
O
I
=0 to 50mA
O
=-55 to 125°C
T
j
V
=7 to 20V
in
=0 to 50mA
I
O
=-55 to 125°C
T
j
∆V
Line Regulation Vin=7 to 20V 5 15 mV
O
∆V
Load Regulation IO=0 to 50mA
∆V
∆V
O
l
Supply Current Tj=-55 to 125°C5070
s
∆l
Supply Current Change IO=0 to 50mA
s
V
Output Noise Voltage f=10Hz to 10KHz 90
n
/∆V
Ripple Rejection Vin=8 to 18V
in
O
V
Input Voltage Required
in
To Maintain Regulation 7 6.7 V
/∆T
Average Temperature
O
Coefficient of V
O
=0 to 10mA
I
O
=7 to 20V
V
in
f=120Hz
IO=5.0mA
=-55 to 125°C 0.275 0.700 mV/°C
T
j
=25°C, IO=10mA, Vin=10V
j
4.780 5.160 V
4.780 5.175 V
25
40 mV
15
1
2
±10
10
55 72 dB
mV
µA
µA
µA
µV rms
4-108
Page 6
TYPICAL CHARACTERISTICS
5.02
ZMR50H
5.00
4.98
4.96
2.52
2.50
Output Voltage
2.48
2.46
ZMR25H
-25025 50
-50
Temperature (°C)
Output Voltage Temperature
34
32
30
ZMR25H
28
Quiescent Current
(µA)
26
-50 -25
02550
Temperature (°C)
Quiescent Current v Temperature
75 100
75
Io=5mA
V
Io=0
in=Vo
V
in=Vo
Io=5mA
in=Vo
V
+4
+4
125
125100
ZMR SERIES
60
50
40
30
+4
20
10
Quiescent Current (µA)
0
468
2
Input Voltage (V)
Quiescent Current v Voltage
60
56
52
48
44
Quiescent Current (µA)
40
-25025 50
-50
Temperature (°C)
Quiescent Current v Temperature
ZMR50H
ZMR25H
10
Io=10 mA
12 14 16
Io=0
in=Vo
V
ZMR50H
75 100
+4
125
20
18
50
ZMR50H
49
48
47
30
ZMR25H
29
Quiescent Current (µA)
28
27
0.1
1
Output Current
Io=0
in=Vo
+4
V
Io=0
in=Vo
+4
V
10
Quiescent Current v Output Current
100
4-109
2.5
2.0
1.5
1.0
Drop-Out Voltage (V)
0.5
0
-50
-25
25 50
0
Io=10 mA
ZMR50H
ZMR25H
75 100
Temperature (°C)
Drop-Out Voltage v Temperature
125
Page 7
ZMR SERIES
10
)
Ω
1.0
0.1
Output Impedance (
0.01
100
Output Impedance v Frequency
1K 10K
Frequency (Hz)
TYPICAL CHARACTERISTICS
I = 10mA
O
I = 2mA
o
V = V + 4V
IN
OUT
ZMR25H
ZMR50H
100K
90
80
70
ZMR25H
ZMR50H
60
50
40
30
20
Ripple Rejection (dB)
10
0
10 100 1K 10K 100K
Ripple Frequency (Hz)
Ripple Rejection v Ripple Frequency
Io= 10mA
+4
IN=Vo
o/dt=1A/µs
75 100
10mA
0
0.4
0
-0.4
100
80
0.4
0
-0.4
Output Voltage Deviation (V)
01020
Vin
ZMR25H
ZMR50H
30
Time ( µ s )
Line Transient Response
800
TO92
Through Hole Device
600
(mW)
400
200
Power Dissipation
0
-25
125
-50
25 50
0
Temperature (°C)
75 100
Power Derating
Load Current
ZMR25H
COUT=0
0.4
0
Output Voltage Deviation (V)
-0.4
ZMR50H
20
0
V
dI
40
60
Time (µs )
Load Transient Response
2
Surface Mount Devices
(mW)
1
SOT23
Power Dissipation
0
-25
-50
25 50
0
Temperature (°C)
Power Derating
C
OUT
V
IN=V o+4
dV
IN/dt=5V/µs
5V
0V
=0
40 50
125
0.4
0
-0.4
4-110
Page 8
TYPICAL CHARACTERISTICS
5.02
ZMR500
5.00
4.98
4.96
2.52
2.50
Output Voltage
2.48
2.46
ZMR250
-25025 50
-50
Temperature (°C)
Output Voltage Temperature
34
32
30
ZMR250
28
Quiescent Current
(µA)
26
-50 -25
02550
Temperature (°C)
Quiescent Current v Temperature
75 100
75
Io=5mA
V
Io=0
in=Vo
V
in=Vo
Io=5mA
in=Vo
V
+4
125100
+4
125
ZMR SERIES
60
50
40
30
+4
20
10
Quiescent Current (µA)
0
468
2
Input Voltage (V)
Quiescent Current v Voltage
60
56
52
48
44
Quiescent Current (µA)
40
-25025 50
-50
Temperature (°C)
Quiescent Current v Temperature
ZMR500
ZMR250
10
Io=10 mA
12 14 16
Io=0
in=Vo
V
ZMR500
75 100
+4
125
20
18
50
ZMR500
49
48
47
30
ZMR250
29
Quiescent Current (µA)
28
27
0.1
1
Output Current
Io=0
in=Vo
+4
V
Io=0
in=Vo
+4
V
10
Quiescent Current v Output Current
100
4-111
2.5
2.0
1.5
1.0
Drop-Out Voltage (V)
0.5
0
-50
-25
ZMR500
ZMR250
25 50
0
75 100
Temperature (°C)
Drop-Out Voltage v Temperature
Io=10 mA
125
Page 9
ZMR SERIES
10
)
Ω
1.0
0.1
Output Impedance (
0.01
100
Output Impedance v Frequency
1K 10K
Frequency (Hz)
TYPICAL CHARACTERISTICS
I = 10mA
O
I = 2mA
o
V = V + 4V
IN
OUT
ZMR250
ZMR500
100K
90
80
70
ZMR250
ZMR500
60
50
40
30
20
Ripple Rejection (dB)
10
0
10 100
Ripple Frequency (Hz)
Ripple Rejection v Ripple Frequency
Io= 10mA
1K 10K 100K
IN=V o+4
o/dt=1A/µs
75 100
10mA
0
0.4
0
-0.4
100
80
0.4
0
-0.4
Output Voltage Deviation (V)
01020
Vin
ZMR250
ZMR500
30
Time (µ s)
Line Transient Response
800
TO92
Through Hole Device
600
(mW)
400
200
Power Dissipation
0
125
-50
-25025 50
Temperature (°C)
75 100
Power Derating
Load Current
ZMR250
COUT=0
0.4
0
Output Voltage Deviation (V)
-0.4
ZMR500
20
0
V
dI
40
60
Time (µs )
Load Transient Response
2
Surface Mount Devices
(mW)
1
SOT23
Power Dissipation
0
-25
-50
25 50
0
Temperature (°C)
Power Derating
COUT=0
IN=Vo+4
V
/dt=5V/µs
dV
IN
5V
0V
0.4
0
-0.4
40 50
125
4-112
Page 10
CONNECTION DIAGRAMS
ZMR SERIES
SOT23 Package Suffix – F
Top View
ORDERING INFORMATION
Part Number Package Part Mark
ZMR250C TO92 ZMR250
ZMR250F SOT23 25K
ZMR25HC T092 ZMR25H
ZMR25HF SOT23 25X
ZMR500C TO92 ZMR500
ZMR500F SOT23 50K
ZMR50HC TO92 ZMR50H
ZMR50HF SOT23 5OR
TO92 Package Suffix – C
Bottom View
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