Zetex ZMR250C, ZMR250F, ZMR25HC, ZMR25HF, ZMR500C Datasheet
...
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
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
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
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