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PDF NJM2821 Data sheet ( Hoja de datos )

Número de pieza NJM2821
Descripción (NJM2820 - NJM2822) Shunt Regulator / SOT-23(MTP5)
Fabricantes JRC 
Logotipo JRC Logotipo



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No Preview Available ! NJM2821 Hoja de datos, Descripción, Manual

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NJM2820, NJM2821, NJM2822
ADJUSTABLE HIGH PRECISION SHUNT REGULATOR
GENERAL DESCRIPTION
The NJM2820/ 2821/ 2822 is a 1.25V precision shunt
regulator.
High precision voltage accuracy of ±0.7%* is realized by
the total optimization from chip design to packaging. In
addition, it features low cathode current of 80uA for low
current operation.
It is suitable for AC-DC converter secondary circuit,
reference voltage applications for A/D and D/A converters,
and other applications where precision reference is required.
FEATURES
High Precision Voltage Reference
Flow Soldering*
Minimum Input Current
Operating Voltage
Adjustable Output Voltage
Bipolar Technology
Package Outline MTP5
1.250V±0.7%
80uA typ.
VREF to 13V
PACKAGE OUTLINE
NJM2820F
NJM2821F
NJM2822F
BLOCK DIAGRAM
REFERENCE
CATHODE
PIN CONFIGURATION
NC 1
5 CATHODE
ANODE 2
NC 3
4 REFERENCE
NJM2820F
NC 1
5 REFERENCE
VREF
ANODE 2
NC 3
4 CATHODE
NJM2821F
ANODE
NC 1
ANODE 2
CATHODE 3
5 ANODE
4 REFERENCE
NJM2822F
* These contents are based on the result that evaluated the arbitrary sample. The characteristic is not guaranteed. The design and
reliability that fully considered flow mounting are checked but the influence by temperature profile etc. is also considered. Please consult
with sales representatives for a recommendation temperature profile.
Ver 2.2 - 1 -

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NJM2821 pdf
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TYPICAL CHARACTERISTICS
NJM2820, NJM2821, NJM2822
Sefty Operating Boundary Condition
(VKA=VREF,Ta=25°C)
250
Stable Operaion Region
200
150
100
50
0
0.001
Unstable Operaion Region
0.01 0.1
1
Output Capacetance Co (uF)
Note) Oscillation might occur while operating within
the range of safety curve.
So that, it is necessary to make ample
margins by taking considerations of fluctuation
of the device.
10
1260
Reference Voltage vs. Temperature
(IK=1mA,VKA=VREF)
1255
1250
1245
1240
-50 -25 0 25 50 75 100 125 150
Ambient Temperature Ta (°C)
Cathode Current (Off Cond.) vs. Temperature
(VKA=13V,VREF=0V)
1
0.8
0.6
0.4
0.2
0
-50 -25 0 25 50 75 100 125 150
Ambient emperature Ta (°C)
Reference Input Current vs. Temperature
(IK=1mA,R1=10k,R2= )
3
2.5
2
1.5
-50 -25 0 25 50 75 100 125 150
Ambient Temperature Ta (°C)
Output Noise Voltage vs. Temperature
(IK=1mA,VKA=VREF)
140
120
100
80
60
40
20
0
-50 -25 0 25 50 75 100 125 150
Ambient Temperature Ta (°C)
-5-

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