ADJUSTABLE HIGH PRECISION SHUNT REGULATOR GENERAL DESCRIPTION NJM

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ADJUSTABLE HIGH PRECISION SHUNT REGULATOR GENERAL DESCRIPTION NJM

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NJM2820, NJM2821, NJM2822
ADJUSTABLE HIGH PRECISION SHUNT REGULATOR
GENERAL DESCRIPTION NJM2820/ 2821/ 2822 1.25V precision shunt regulator. High precision voltage accuracy ±0.7%* realized total optimization from chip design packaging. addition, features cathode current 80uA current operation. suitable AC-DC converter secondary circuit, reference voltage applications converters, other applications where precision reference required. FEATURES High Precision Voltage Reference Flow Soldering* Minimum Input Current Operating Voltage Adjustable Output Voltage Bipolar Technology Package Outline MTP5 BLOCK DIAGRAM
CATHODE
PACKAGE OUTLINE
NJM2820F NJM2821F NJM2822F
1.250V±0.7% 80uA typ. VREF
CONFIGURATION
ANODE REFERENCE CATHODE
REFERENCE
NJM2820F
REFERENCE
VREF
ANODE CATHODE
NJM2821F
ANODE
ANODE CATHODE
ANODE
REFERENCE
NJM2822F
These contents based result that evaluated arbitrary sample. characteristic guaranteed. design reliability that fully considered flow mounting checked influence temperature profile etc. also considered. Please consult with sales representatives recommendation temperature profile.
NJM2820, NJM2821, NJM2822
ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL Cathode Voltage Continuous Cathode Current Reference Input Current IREF Power Dissipation Operating Temperature Range TOPR Storage Temperature Range TSTG MAXIMUM RATINGS 0.05 (MTP5) +150 UNIT
RECOMMENDED OPERATING CONDITIONS (Ta=25°C) PARAMETER SYMBOL MIN. TYP. MAX. Cathode Voltage Cathode Current VREF
UNIT
ELECTRICAL CHARACTERISTICS (IK=1mA,Ta=25°C) PARAMETER SYMBOL TEST CONDITION Reference Voltage Reference Voltage Change Cathode Voltage Change Reference Input Current Minimum Input Current Cathode Current (Off Cond.) Dynamic Impedance VREF VREF/ IREF IMIN IOFF VKA=VREF VREFVKA5V 5VVKA13V (*1) (*2) (*2)
MIN. 1241
TYP. 1250 0.01 0.12
MAX. 1259 ±2.7 ±2.0
UNIT mV/V mV/V
(*2) R1=10k, VKA=VREF, VREF=1% (*1) (*3) VKA=13V, VREF=0V VKA= VREF, f1kHz 0.5mAIK30mA (*1)
TEMPERATURE CHARACTERISTICS (IK=1mA,Ta=-40°C 85°C) PARAMETER SYMBOL TEST CONDITION Reference Voltage Change Reference Input Current Change VREF IREF VKA=VREF R1=10k,R2= (*1) (*2)
MIN.
TYP.
MAX.
UNIT
voltage includes error. (*1): Test Circuit (Fig.1) (*2): Test Circuit (Fig.2) (*3): Test Circuit (Fig.3) case NJM2822, electrical characteristics measured referencing anode terminal
NJM2820, NJM2821, NJM2822
TEST CIRCUIT
INPUT
IREF
INPUT
VREF
VREF
Fig.1 VKA=VREF test circuit VO=VKA=VREF
Fig.2 VKA>VREF test circuit
VREF1 IREF
INPUT IOFF
IK=1mA 470uF
Fig.3 IOFF test circuit
Fig.4 Gain Phase test circuit
POWER DISSIPATION AMBIENT TEMPERATURE
Power Dissipation (mW) Ambient Temperature (°C)
NJM2820, NJM2821, NJM2822
TYPICAL CHARACTERISTICS
Reference Voltage Cathode Current (VKA=VREF,Ta=25°C) Reference Voltage VREF (mV) Reference Voltage Cathode Current (VKA=VREF,Ta=25°C)
Reference Voltage VREF (mV)
1260 1255 1250 1245 1240
1400
1200
1000
Cathode Current (uA)
Cathode Current (mA)
Reference Voltage Change Cathode Voltage Reference Voltage Change VREF (mV)
Cathode Current (Off Cond.) Cathode Voltage (VREF=0V,Ta=25°C) Cathode Current IOFF (nA)
Cathode Voltage
Cathode Voltage
Dynamic Impedance |ZKA|
Dynamic Impedance (IK=0.5~30mA,VKA=VREF,Ta=25°C)
Voltage Gain (dB)
Voltage Gain Phase Frequency (Fig.4 Test Circuit,Ta=25°C)
Phase (deg)
Gain
Phase
-180 -270 -360
100k Cathode Current Frequency (Hz)
100k Frequency (Hz)
NJM2820, NJM2821, NJM2822
TYPICAL CHARACTERISTICS
Sefty Operating Boundary Condition (VKA=VREF,Ta=25°C)
Stable Operaion Region
Cathode Current (uA)
Note)
Unstable Operaion Region
Oscillation might occur while operating within range safety curve. that, necessary make ample margins taking considerations fluctuation device.
0.001
0.01 Output Capacetance (uF)
Reference Voltage Temperature (IK=1mA,VKA=VREF) Reference Voltage VREF (mV) 1260 1255 1250 1245 1240 Reference Input Current IREF (uA)
Reference Input Current Temperature (IK=1mA,R1=10k,R2=
Ambient Temperature (°C)
Output Noise Voltage Temperature (IK=1mA,VKA=VREF)
Ambient Temperature (°C)
Cathode Current (Off Cond.) Temperature (VKA=13V,VREF=0V) Cathode Current IOFF (uA) Ambient emperature (°C)
Output Noise Voltage (uVrms)
Ambient Temperature (°C)
NJM2820, NJM2821, NJM2822 MEMO
[CAUTION] specifications this databook only given information without guarantee regards either mistakes omissions. application circuits this databook described only show representative usages product intended guarantee permission right including industrial rights.

ADJUSTABLE HIGH PRECISION SHUNT REGULATOR GENERAL DESCRIPTION NJM

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