ETC ZTR500C02

FIXED 2.5 AND 5 VOLT
3-TERMINAL VOLTAGE REFERENCES
ZTR250
ZTR500
ISSUE 4 - MARCH 1998
DEVICE DESCRIPTION
FEATURES
The ZTR250 and ZTR500 are precision three
terminal references. These devices are ideal
for battery powered applications where
power saving is important. They offer low
power alternatives to other two terminal
shunt references.
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The ZTR devices do not require an external
resistor and, in contrast to two terminal
references, waste none of the battery power
as load current varies. The ZTR only
consumes 30µA supply current.
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The two devices require as low as 1.4 volts
between input and output for regulation.
Output voltage tolerance is ± 2.5%, with a
voltage variation of 0.275mV/°C over the
-55°C to 125°C operating range.
Small outline SOT23 and SOT89
packages
TO92 package
2.5V and 5V output
2.5% tolerance
Supply current independent of input
voltage over temperature
Output current up to 50mA
Very low supply current (30µA)
Unconditionally stable
Internal short circuit current limit
APPLICATIONS
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Battery Powered Systems
Portable and Hand Held Equipment
Instrumentation
Metering
SCHEMATIC DIAGRAM
Vin
Vout
Gnd
4-388
ZTR250
ZTR500
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Output current (IO)
Operating temperature
Storage temperature
20V
200mA
-55 to 125°C
-65 to 150°C
Power Dissipation (Tamb= 25°C, Tjmax=150 °C)
SOT23
500mW
TO92
600mW
SOT89
1.5W
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 Tamb=125°C.
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. This device does not contain a thermal shutdown circuit so care should be taken not to exceed the stated
maximum power dissipation rating.Maximum power dissipation, for the SOT23 and SOT89 packages, is
calculated assuming that the device is mounted on a ceramic substrate measuring 15 x 15 x 0.6mm.
ZTR250
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=10mA, Vin=6.5V
SYMBOL PARAMETER
VO
CONDITIONS
Output Voltage
MIN.
TYP.
MAX.
UNITS
2.438
2.5
2.563
V
IO=0 to 50mA
Tj=-55 to 125°C
2.360
2.640
V
Vin=4.5 to 20V
IO=0 to 50mA
Tj=-55 to 125°C
2.360
2.640
V
∆VO
Line Regulation
Vin=4.5 to 20V
5
15
mV
∆VO
Load Regulation
IO=0 to 50mA
IO=0 to 10mA
20
12
30
mV
mV
Supply Current
Tj=-55 to 125°C
30
40
µA
∆ls
Supply Current Change
IO=0 to 50mA
Vin=4.5 to 20V
1
2
±10
10
µA
µA
Vn
Output Noise Voltage
f=10Hz to 10kHz
65
µV
(rms)
55
75
dB
4.2
3.9
V
ls
∆Vin/∆VO Ripple Rejection
Vin
∆VO/∆T
Vin=6.3 to 18V
f=120Hz
Input Voltage Required
To Maintain Regulation
Average Temperature
Coefficient of VO
IO=5.0mA
Tj=-55 to 125°C
4-389
0.275
0.700
mV/°C
ZTR250
ZTR500
ZTR500
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=10mA, Vin=10V
SYMBOL PARAMETER
VO
CONDITIONS
Output Voltage
MIN.
TYP.
MAX.
UNITS
4.875
5
5.125
V
IO=0 to 50mA
Tj=-55 to 125°C
4.780
5.160
V
Vin=7 to 20V
IO=0 to 50mA
Tj=-55 to 125°C
4.780
5.175
V
∆VO
Line Regulation
Vin=7 to 20V
5
15
mV
∆VO
Load Regulation
IO=0 to 50mA
IO=0 to 10mA
25
15
40
mV
mV
Supply Current
Tj=-55 to 125°C
50
70
µA
∆ls
Supply Current Change
IO=0 to 50mA
Vin=7 to 20V
1
2
±10
10
µA
µA
Vn
Output Noise Voltage
f=10Hz to 10kHz
90
ls
∆Vin/∆VO Ripple Rejection
Vin
∆VO/∆T
Vin=8 to 18V
f=120Hz
Input Voltage Required
To Maintain Regulation
Average Temperature
Coefficient of VO
55
4-390
72
dB
7
IO=5.0mA
Tj=-55 to 125°C
µV
(rms)
6.7
0.275
V
0.700
mV/°C
ZTR250
ZTR500
TYPICAL CHARACTERISTICS a=ZTR250: b=ZTR500
5.02
60
Supply Current (µA)
Output Voltage
5.00
Io=10mA
Io=5mA
Vin=Vo+4
b
4.98
4.96
2.52
Io=5mA
Vin=Vo+4
2.50
b
50
40
a
30
20
2.48
10
2.46
a
-50
-25
0
25
50
0
75 100 125
2
4
Temperature (°C)
6
10 12 14 16 18
8
20
Input Voltage (V)
Output Voltage Temperature
Supply Current v Voltage
60
Io=0
Vin=Vo+4
Supply Current (µA)
Supply Current (µA)
34
32
30
a
28
Io=0
Vin=Vo+4
56
52
48
b
44
26
40
-50 -25
0
25
50
75 100 125
-50
-25
0
25
50
75 100 125
Temperature (°C)
Temperature (°C)
Supply Current v Temperature
Supply Current v Temperature
2.5
49
Io=10mA
b
Io=0
Vin=Vo+4
48
Drop-Out Voltage (V)
Supply Current (µA)
50
47
30
29
a
28
Io=0
Vin=Vo+4
27
0.1
1
10
2.0
b
1.5
a
1.0
0.5
0
100
-50 -25
Output Current
0
25
50
75 100 125
Temperature (°C)
Supply Current v Output Current
Drop-Out Voltage v Temperature
4-391
ZTR250
ZTR500
TYPICAL CHARACTERISTICS
a=ZTR250: b=ZTR500
90
I O= 10mA
I o= 2mA
VIN = VOUT+ 4V
80
Ripple Rejection (dB)
Output Impedance (Ohms)
10
1.0
a
b
0.1
Io = 10mA
70
a
b
60
50
40
30
20
10
0
10
0.01
100
1K
100K
10K
100
0mA
0.4
a
0
COUT=0
VIN=Vo+4
dIo/dt=1A/µs
-0.4
b
Output Voltage Deviation (V)
Output Voltage Deviation (V)
5mA
Load Current
0
-0.4
40
20
0
80
60
100K
5V
Vin
0V
0.4
a
0
COUT=0
VIN=Vo+4
dVIN/dt=5V/µs
0.4
-0.4
100
0
10
20
30
40
Line Transient Response
800
2
Surface Mount Devices
Through Hole Device
TO92
Power Dissipation (mW)
SOT89
1
SOT23
600
400
200
0
0
-25
0
25
50
50
Time (µs)
Load Transient Response
-50
-0.4
b
0
Time (µs)
Power Dissipation (mW)
10K
Ripple Rejection v Ripple Frequency
Output Impedance v Frequency
0.4
1K
Ripple Frequency (Hz)
Frequency (Hz)
75 100 125
-50
Temperature (°C)
-25
0
25
50
75 100 125
Temperature (°C)
Power Derating
Power Derating
4-392
ZTR250
ZTR500
CONNECTION DIAGRAMS
SOT23 Package Suffix – F
TO92 Package Suffix – C
Top View
Bottom View
SOT89
Package Suffix – Z
Top View
ORDERING INFORMATION
Part
Number
Tol
%
Package Part Mark
ZTR250C02
2.5
TO92
ZTR25002
ZTR250F02
2.5
SOT23
25U
ZTR250Z02
2.5
SOT89
25U
ZTR500C02
2.5
TO92
ZTR50002
ZTR500F02
2.5
SOT23
50N
ZTR500Z02
2.5
SOT89
50N
4-393