NJM2820 [NJRC]
ADJUSTABLE HIGH PRECISION SHUNT REGULATOR; 可调式高精密并联稳压器
| 型号： | NJM2820 |
| 厂家： | 
NEW JAPAN RADIO |
| 描述： | ADJUSTABLE HIGH PRECISION SHUNT REGULATOR |
| 文件： | 总6页 (文件大小：93K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NJM2820, NJM2821, NJM2822
ADJUSTABLE HIGH PRECISION SHUNT REGULATOR
■GENERAL DESCRIPTION
■PACKAGE OUTLINE
The NJM2820/ 2821/ 2822
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.
NJM2820F
NJM2821F
NJM2822F
■FEATURES
● High Precision Voltage Reference
● Flow Soldering*
● Minimum Input Current
● Operating Voltage
1.250V±0.7%
80uA typ.
VREF to 13V
● Adjustable Output Voltage For External Resistance two Parts
● Bipolar Technology
● Package Outline
MTP5
■BLOCK DIAGRAM
■PIN CONFIGURATION
CATHODE
NC 1
ANODE 2
NC 3
5 CATHODE
4 REFERENCE
NJM2820F
NJM2821F
REFERENCE
NC 1
ANODE 2
NC 3
5 REFERENCE
4 CATHODE
VREF
ANODE
NC 1
ANODE 2
5 ANODE
CATHODE 3
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 2.1 - 1 -
NJM2820, NJM2821, NJM2822
■ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER
SYMBOL
MAXIMUM RATINGS
14
UNIT
V
Cathode Voltage
VKA
Continuous Cathode Current
Reference Input Current
Power Dissipation
IK
IREF
mA
mA
mW
°C
-30 50
-10 0.05
PD
TOPR
TSTG
(MTP5)
200
Operating Temperature Range
Storage Temperature Range
-40 +85
°C
-40 +150
■RECOMMENDED OPERATING CONDITIONS (Ta=25°C)
PARAMETER
Cathode Voltage
Cathode Current
SYMBOL MIN.
TYP.
MAX.
13
30
UNIT
V
mA
VKA
IK
VREF
0.5
–
–
■ELECTRICAL CHARACTERISTICS (IK=1mA,Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX. UNIT
Reference Voltage
VREF
VKA=VREF
VREF≤VKA≤5V
(*1)
(*2)
(*2)
1241
–
1250
–
1259
±2.7
mV
Reference Voltage
Change vs. Cathode
Voltage Change
mV/V
∆VREF
/
∆VKA
–
–
–
–
2.0
80
mV/V
uA
uA
5V≤VKA≤13V
R1=10kΩ, R2=∞
VKA=VREF, ∆VREF=1%
±2.0
4.0
500
Reference Input Current
(*2)
(*1)
(*3)
IREF
IMIN
IOFF
Minimum Input Current
Cathode Current
VKA=13V, VREF=0V
–
0.01
1.0
uA
(Off Cond.)
Dynamic Impedance
ZKA VKA= VREF, f≤1kHz
0.5mA≤IK≤30mA
(*1)
–
0.12
–
Ω
■TEMPERATURE CHARACTERISTICS (IK=1mA,Ta=-40°C 85°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
±10
0.5
MAX. UNIT
Reference Voltage
∆VREF VKA=VREF
(*1)
–
–
–
–
mV
uA
Change
Reference Input Current
Change
∆IREF
R1=10kΩ,R2=∞
(*2)
VREF···Reference voltage includes error.
(*1): Test Circuit (Fig.1)
(*2): Test Circuit (Fig.2)
(*3): Test Circuit (Fig.3)
In case of NJM2822, all electrical characteristics are measured referencing to the anode terminal of PIN 5.
- 2 -
NJM2820, NJM2821, NJM2822
■TEST CIRCUIT
INPUT
VKA
INPUT
R1
VKA
IK
IK
IREF
VREF
R2
VREF
Fig.1 VKA=VREF to test circuit
VO=VKA=VREF
Fig.2 VKA>VREF to test circuit
R1
R2
REF
VO
= VKA = V
1+
+IREF ×R1
INPUT
VKA
10kΩ
IOFF
IK=1mA
470uF
10kΩ
Fig.3 IOFF to test circuit
Fig.4 Gain and Phase to test circuit
■POWER DISSIPATION VS. AMBIENT TEMPERATURE
250
200
150
100
50
0
0
25
50
75
100
Ambient Temperature Ta (°C)
- 3 -
NJM2820, NJM2821, NJM2822
■TYPICAL CHARACTERISTICS
Reference Voltage vs. Cathode Current
(VKA=VREF,Ta=25°C)
Reference Voltage vs. Cathode Current
(VKA=VREF,Ta=25°C)
1400
1260
1255
1250
1245
1240
1200
1000
800
600
0
10
20
30
0
20
40
60
80
100
Cathode Current IK (mA)
Cathode Current IK (uA)
Reference Voltage Change vs. Cathode Voltage
Cathode Current (Off Cond.) vs. Cathode Voltage
(IK=1mA,R1=Variable,R2=10kΩ,Ta=25°C)
(VREF=0V,Ta=25°C)
1
4
0.8
0.6
0.4
0.2
0
3
2
1
0
0
5
10
15
0
5
10
15
Cathode Voltage VKA (V)
Cathode Voltage VKA (V)
Dynamic Impedance
(IK=0.5~30mA,VKA=VREF,Ta=25°C)
Voltage Gain · Phase vs. Frequency
(Fig.4 Test Circuit,Ta=25°C)
1.2
1
80
60
360
270
180
90
Gain
40
0.8
0.6
0.4
0.2
0
20
0
0
-20
-40
-60
-80
-90
-180
-270
-360
Phase
100
1k
10k
100k
1M
10M
1
10
100
1k
10k
100k
Cathode Current Frequency f (Hz)
Frequency f (Hz)
- 4 -
NJM2820, NJM2821, NJM2822
■TYPICAL CHARACTERISTICS
Sefty Operating Boundary Condition
(VKA=VREF,Ta=25°C)
250
200
150
100
50
Stable Operaion Region
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.
Aunstable Operaion Region
0
0.001
0.01
0.1
1
10
Output Capacetance Co (uF)
Reference Voltage vs. Temperature
(IK=1mA,VKA=VREF
Reference Input Current vs. Temperature
)
(IK=1mA,R1=10kΩ,R2=
)
3
1260
1255
1250
1245
1240
2.5
2
1.5
-50 -25
0
25 50 75 100 125 150
-50 -25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Ambient Temperature Ta (°C)
Output Noise Voltage vs. Temperature
Cathode Current (Off Cond.) vs. Temperature
(VKA=13V,VREF=0V)
(IK=1mA,VKA=VREF
)
140
120
100
80
1
0.8
0.6
0.4
0.2
0
60
40
20
0
-50 -25
0
25 50 75 100 125 150
-50 -25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Ambient emperature Ta (°C)
- 5 -
NJM2820, NJM2821, NJM2822
MEMO
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
- 6 -
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NJRC
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