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ZTR250 Datasheet Preview

ZTR250 Datasheet

(ZTR250 / ZTR500) FIXED 2.5 AND 5 VOLT 3-TERMINAL VOLTAGE REFERENCES

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FIXED 2.5 AND 5 VOLT
3-TERMINAL VOLTAGE REFERENCES
ISSUE 4 - MARCH 1998
ZTR250
ZTR500
DEVICE DESCRIPTION
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.
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.
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.
www.DataSheet4U.com
FEATURES
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
Battery Powered Systems
Portable and Hand Held Equipment
Instrumentation
Metering
SCHEMATIC DIAGRAM
Vin
Vout
4-388
Gnd




Zetex Semiconductors

ZTR250 Datasheet Preview

ZTR250 Datasheet

(ZTR250 / ZTR500) FIXED 2.5 AND 5 VOLT 3-TERMINAL VOLTAGE REFERENCES

No Preview Available !

ABSOLUTE MAXIMUM RATINGS
Input Voltage
20V
Output current (IO)
200mA
Operating temperature -55 to 125°C
Storage temperature
-65 to 150°C
ZTR250
ZTR500
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
CONDITIONS MIN. TYP. MAX. UNITS
VO Output Voltage
2.438 2.5
IO=0 to 50mA 2.360
Tj=-55 to 125°C
Vin=4.5 to 20V
IO=0 to 50mA
Tj=-55 to 125°C
2.360
VO Line Regulation
Vin=4.5 to 20V
5
VO Load Regulation
IO=0 to 50mA
IO=0 to 10mA
20
12
ls Supply Current
Tj=-55 to 125°C
30
ls Supply Current Change IO=0 to 50mA
Vin=4.5 to 20V
1
2
2.563
2.640
V
V
2.640 V
15 mV
30 mV
mV
40 µA
±10 µA
10 µA
Vn Output Noise Voltage
f=10Hz to 10kHz
65
µV
(rms)
Vin/VO Ripple Rejection
Vin=6.3 to 18V
f=120Hz
55
75
dB
Vin Input Voltage Required
To Maintain Regulation
4.2 3.9
V
VO/T Average Temperature
Coefficient of VO
IO=5.0mA
Tj=-55 to 125°C
0.275 0.700 mV/°C
4-389


Part Number ZTR250
Description (ZTR250 / ZTR500) FIXED 2.5 AND 5 VOLT 3-TERMINAL VOLTAGE REFERENCES
Maker Zetex Semiconductors
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ZTR250 Datasheet PDF






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