ZRT050
4.9V LOW POWER PRECISION REFERENCE SOURCE
Description
The ZRT050 is a monolithic integrated circuit providing a
precise stable reference voltage of 4.9V at 500μA.
The circuit features a knee current of 150μA and operation
over a wide range of temperatures and currents.
The ZRT050 is available in a SOT223 package for surface
mount applications. This device offers a trim facility whereby
the output voltage can be adjusted as shown in the
schematic diagram. This facility is used when compensating
for system errors or setting the reference output to a
particular value. When the trim facility is not used, the pin
should be left open circuit.
Pin Assignments
SOT223
T
RIM
1
GND 2
V
R
3
4
Top View
(Pin 4 floating or
connected to pin 2)
Features
•
•
•
•
•
•
•
•
•
Trimmable output
Excellent temperature stability
Low output noise figure
-40 to 85°C operating temperature range
1% initial voltage tolerance
No external stabilizing capacitor required in most cases
Low slope resistance
No derating required at low temperatures
SOT223 small outline package
Schematic Diagram
This circuit will allow the reference to be trimmed over a wide range. The device is specified over a ±5% trim range.
ZRT050
Document number: DS33259 Rev. 4 - 2
1 of 5
www.diodes.com
February 2011
© Diodes Incorporated
ZRT050
4.9V LOW POWER PRECISION REFERENCE SOURCE
Absolute Maximum Ratings
Parameter
Reverse Current (Note 1)
Operating Temperature: C grade
Storage Temperature
Notes:
Symbol
T
OMP
T
STG
Value
60
-40 to +85
-55 to +150
Unit
mA
°C
°C
1. Above 72°C this figure should be linearly derated to 15mA @ 125°C
Power Dissipation
Package
SOT223
(@T
amb
= 25°C unless otherwise stated)
Value
2
Unit
W
Temperature Dependent Electrical Characteristics
Grade C
-40 to 85°C
Typ.
Max.
5.4
15.0
17.2
50.0
Symbol
ΔV
R
T
C
V
R
Parameter
Output voltage change over operating temperature
range
Output voltage temperature coefficient
(see Note B)
Unit
mV
ppm/°C
Electrical Characteristics
(@T
amb
= 25°C unless otherwise stated)
Symbol
V
R
V
TRIM
T
C
V
TRIM
I
R
t
on
t
off
e
np-p
R
S
Parameter
Output voltage:
1% tolerance
Output voltage adjustment range
Change in T
C
V
R
with output adjustment
Operating current range
Turn-on time
Turn-off time
Output voltage noise
(over the range 0.1 to 10Hz)
Slope resistance (see Note D)
(See Note C)
R
L
= 1kΩ
Peak to peak
measurement
I
R
= 0.5mA to 5mA
0.15
100
0.3
50
1.25
2.0
Conditions
I
R
= 500 µA
R
T
= 100kΩ
Min.
4.85
Typ.
4.90
±5
2.5
60
Max.
4.95
Unit
V
%
ppm/°C
mA
µs
µV
Ω
ZRT050
Document number: DS33259 Rev. 4 - 2
2 of 5
www.diodes.com
February 2011
© Diodes Incorporated
ZRT050
4.9V LOW POWER PRECISION REFERENCE SOURCE
Typical Characteristics
(a) Output change with temperature
The absolute maximum difference between the maximum
output voltage and the minimum output voltage over the
specified temperature range:
ΔV
R
=V
MAX
- V
MIN
(b) Output temperature coefficient (T
C
V
R
)
The ratio of the output change with temperature to the
specified temperature range expressed in ppm/°C:
(d) Slope resistance (RS)
The slope resistance is defined as:
(e) Line regulation
The ratio of change in output voltage to the change in
input voltage producing it:
ΔT=
Full temperature range
(c
) Operating current (I
R
)
Maximum operating current must be derated as indicated in
maximum ratings.
ZRT050
Document number: DS33259 Rev. 4 - 2
3 of 5
www.diodes.com
February 2011
© Diodes Incorporated
ZRT050
4.9V LOW POWER PRECISION REFERENCE SOURCE
Ordering Information
Device
ZRT050GC1
Tol %
1
Operating
Temperature
-40 to +85°C
Part Mark
ZRT050C1
Reel
Size
7”
Tape
Width
12mm
Quantity
Per Reel
1000
Package Outline Dimensions
(All Dimensions in mm)
SOT223
DIM
A
A1
b
b2
C
D
Millimeters
Min
Max
-
1.80
0.02
0.10
0.66
0.84
2.90
3.10
0.23
0.33
6.30
6.70
Inches
Min
Max
-
0.071
0.0008
0.004
0.026
0.033
0.114
0.122
0.009
0.013
0.248
0.264
DIM
e
e1
E
E1
L
-
Millimeters
Min
Max
2.30 BSC
4.60 BSC
6.70
7.30
3.30
3.70
0.90
-
-
-
Inches
Min
Max
0.0905 BSC
0.181 BSC
0.264
0.287
0.130
0.146
0.355
-
-
-
Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches.
ZRT050
Document number: DS33259 Rev. 4 - 2
4 of 5
www.diodes.com
February 2011
© Diodes Incorporated
ZRT050
4.9V LOW POWER PRECISION REFERENCE SOURCE
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS
DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other
changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability
arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any
license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described
herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies
whose products are represented on Diodes Incorporated website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized
sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall
indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names
and markings noted herein may also be covered by one or more United States, international or foreign trademarks.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without
the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided
in the labeling can be reasonably expected to result in significant injury to the user.
B.
A critical component is any component in a life support device or system whose failure to perform can be reasonably expected
to cause the failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or
systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements
concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems,
notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further,
Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes
Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2011, Diodes Incorporated
www.diodes.com
ZRT050
Document number: DS33259 Rev. 4 - 2
5 of 5
www.diodes.com
February 2011
© Diodes Incorporated
京公网安备 11010802033920号
EEWORLD
