NJM2863/64
Ultra Low Noise Low Dropout Voltage Regulator
!
GENERAL DESCRIPTION
The NJM2863/64 is a 2ch low dropout voltage regulator designed
for VCO Applications.
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
!
PACKAGE OUTLINE
NJM2863F/64F
!
FEATURES
"
High Ripple Rejection
75dB typ. (f=1kHz)
"
Output capacitor with 1.0µF ceramic capacitor
"
Output Noise Voltage
Vno=19µVrms typ. (Cp=0.01µF, Co=1.0µF(Ceramic))
Vno=12µVrms typ. (Cp=0.1µF, Co=10µF(Tantalum))
"
Output Current
Io(max.)=100mA
"
High Precision Output
Vo±1.0%
"
Low Dropout Voltage
0.10V typ. (Io=60mA)
"
ON/OFF Control
(Active High)
"
Internal Short Circuit Current Limit
"
Internal Thermal Overload Protection
"
Bipolar Technology
"
Package Outline
MTP5
!
PIN CONFIGURATION
5
4
1 2 3
PIN FUNCTION
1.CONTROL
2.GND
3.NOISE BYPASS
4.V
OUT
5.V
IN
NJM2863F
1.V
IN
2.GND
3.CONTROL
4.NOISE BYPASS
5.V
OUT
NJM2864F
!
EQUIVALENT CIRCUIT
V
IN
Control
Bandgap
Reference
Thermal
Protection
Noise
Bypass
V
OUT
GND
!
OUTPUT VOLTAGE RANK LIST
Device Name
V
OUT
2.1V
NJM286×F21
2.5V
NJM286×F25
2.7V
NJM286×F27
2.8V
NJM286×F28
2.85V
NJM286×F285
Device Name
NJM286×F29
NJM286×F03
NJM286×F33
NJM286×F05
V
OUT
2.9V
3.0V
3.3V
5.0V
Ver.2004-01-20
-1-
NJM2863/64
!
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
Control Voltage
V
CONT
Power Dissipation
P
D
Operating Temperature
Topr
Storage Temperature
Tstg
(Ta=25°C)
RATINGS
UNIT
+14
V
+14(*note 1)
V
200
mW
−40 ∼
+85
°C
−40 ∼
+125
°C
(*note 1): When input voltage is less than +14V, the absolute maximum control
voltage is equal to the input voltage.
!
ELECTRICAL CHARACTERISTICS
(V
IN
=Vo+1V, C
IN
=0.1µF, Co=1.0µF: Vo≥2.7V (Co=2.2µF: Vo≤2.6V), Cp=0.01µF, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP.
Output Voltage
Vo
Io=30mA
-1.0%
−
Quiescent Current
I
Q
Io=0mA, except Icont
120
−
Quiescent Current
V
CONT
=0V
I
Q(OFF)
−
−
at Control OFF
Output Current
Io
Vo-0.3V
100
130
Line Regulation
∆Vo/∆V
IN
V
IN
=Vo+1V
∼
Vo+6V, Io=30mA
−
−
Load Regulation
∆Vo/∆Io
Io=0
∼
100mA
−
−
Io=60mA
0.10
Dropout Voltage
∆V
I−O
−
ein=200mVrms,f=1kHz, Io=10mA,
Ripple Rejection
RR
75
−
Vo=3V Version
Average Temperature
Coefficient of Output
∆Vo/∆Ta
Ta=0∼85°C, Io=10mA
±
50
−
Voltage
f=10Hz∼80kHz, Io=10mA, Cp=0.01µF,
Output Noise Voltage1
V
NO1
19
−
Co=1.0µF (Ceramic), Vo=3V Version
f=10Hz∼80kHz, Io=10mA, Cp=0.1µF,
Output Noise Voltage2
V
NO2
12
Co=10µF (Tantalum), Vo=3V Version
Control Voltage for
1.6
V
CONT(ON)
−
ON-state
Control Voltage for
V
CONT(OFF)
−
−
OFF-state
(*note 2): The above specification is a common specification for all output voltages.
Therefore, it may be different from the individual specification for a specific output voltage.
!
TEST CIRCUIT
MAX.
+1.0%
180
100
−
0.10
0.03
0.18
−
−
−
UNIT
V
µA
nA
mA
%/V
%/mA
V
dB
ppm/°C
µVrms
µVrms
−
0.6
V
V
A
V
IN
I
IN
V
IN
V
OUT
1.0µF
(ceramic)
0.1µF
NJM2863/64
NOISE
CONTROL BYPASS
I
OUT
V
V
OUT
A
V
V
CONT
I
CONT
OR
2.2µF: Vo≤2.6V
GND
Cp=0.01µF
-2-
Ver.2004-01-20
NJM2863/64
!
TYPICAL APPLICATION
1
In the case where ON/OFF Control is not required:
V
IN
0.1µF
V
IN
V
OUT
V
OUT
1.0µF
(ceramic)
OR
2.2µF: Vo≤2.6V
ＮＪＭ2863/64
NOISE
CONTROL BYPASS
R
(0∼300kΩ)
GND
Cp=0.01µF
Connect control terminal to V
IN
terminal
The quiescent current can be reduced by using a resistance “R”. Instead, it increases the minimum operating
voltage. For further information, please refer to Figure “Output Voltage vs. Control Voltage”.
2
In use of ON/OFF CONTROL:
V
IN
V
IN
V
OUT
V
OUT
1.0µF
(ceramic)
OR
2.2µF:
Vo≤2.6V
0.1µF
ＮＪＭ2863/64
R
NOISE
CONTROL BYPASS
GND
Cp=0.01µF
State of control terminal:
•“H”→
output is enabled.
•“L”
or “open”
→
output is disabled.
%Noise
bypass Capacitance Cp
Noise bypass capacitance Cp reduces noise generated by band-gap reference circuit.
Noise level and ripple rejection will be improved when larger Cp is used.
Use of smaller Cp value may cause oscillation.
Use the Cp value of 0.01µF greater to avoid the problem.
Ver.2004-01-20
-3-
NJM2863/64
!
ELECTRICAL CHARACTERISTICS
NJM2863/64_3.0V
Output Voltage v.s. Input Voltage
@:Ta=25 C
Co=1.0uF(Ceramic)
Cp=0.01uF
3.1
o
3.2
4
NJM2863/64_3.0V
Output Voltage vs. Output Current
3.5
Output Voltage :Vo [V]
3
Io=0A
3
Output Voltage :Vo [V]
2.5
2
2.9
Io=30mA
1.5
1
2.8
Io=100mA
0.5
@:Ta=25 C
VIN=4V
Co=1.0uF(Ceramic)
Cp=0.01uF
o
2.7
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
0
0
50
100
150
200
Input Voltage :Vin [V]
Output Current :Io [mA]
20
NJM2863/64_3.0V
Ground Pin Current vs. Output Voltage
@:Ta=25 C
VIN=4V
Co=1.0uF(Ceramic)
Cp=0.01uF
o
0.3
NJM2863/64_3.0V
Dropout Voltage vs. Output Current
@:Ta=25 C
Co=1.0uF(Ceramic)
Cp=0.01uF
o
0.25
Ground Pin Current :Ignd [mA]
15
Dropout Voltage :dVi-o [V]
0
20
40
60
80
100
120
0.2
10
0.15
0.1
5
0.05
0
0
0
20
40
60
80
100
120
Output Current :Io [mA]
Output Current :Io [mA]
30
NJM2863/64_3.0V
Control Current v.s. Control Voltage
@:Ta=25 C
Vin=4.0V
Co=1.0uF(Ceramic)
Cp=0.01uF
Io=30mA
o
4
NJM2863/64_3.0V
Output Voltage v.s. Control Voltage
@:Ta=25 C
Vin=4.0V
Co=1.0uF(Ceramic)
Cp=0.01uF
Io=30mA
Rc=0Ω
Rc=50kΩ
o
3.5
25
Control Current :Icont [uA]
20
Output Voltage :Vo [V]
3
2.5
15
Rc=0Ω
2
Rc=100kΩ
1.5
Rc=50kΩ
10
1
5
0.5
Rc=100kΩ
0
0
0.5
1
1.5
2
2.5
3
3.5
4
0
0
0.5
1
1.5
2
2.5
3
Control Voltage :Vcont [V]
Control Voltage :Vcont [V]
-4-
Ver.2004-01-20
NJM2863/64
!
ELECTRICAL CHARACTERISTICS
NJM2863/64_3.0V
Output Noise Voltage vs. Noise Bypass Capacitor
@:Ta=25 C
VIN=4V
Co=1uF
(Ceramic)
Io=10mA
o
300
100
NJM2863/64_3.0V
Output Noise Voltage vs. Output Current
@:Ta=25 C
VIN=4.0V
LPF:80kHz
o
250
Output Noise Voltage : Vn(uVrms)
200
Output Noise Voltage :Vn [uVrms]
80
60
150
40
100
Co=1.0uF(Ceramic)
Cp=0.01uF
50
20
0
1p
10p
100p
1000p
0.01u
0.1u
0
0.001
Co=10uF(Tantalum)
Cp=0.1uF
0.01
0.1
1
10
100
Noise Bypass Capacitor : Cp(F)
Output Current :Io [mA]
90
NJM2863/64_3.0V
Ripple Rejection Ratio v.s. Frequency
100
NJM2863/64_3.0V
Ripple Rejection vs. Output Current
80
Io=10mA
90
f=1kHz
80
Ripple Rejection Ratio :RR [dB]
70
Io=30mA
60
Ripple Rejection : RR (dB)
70
60
50
50
f=10kHz
@:Ta=25
o
C
VIN=4V
ein=200mVrms
Co=1.0uF
(Ceramic)
Cp=0.01uF
0.01
0.1
1
10
100
40
@:Ta=25
o
C
VIN=4.0V
ein=200mVrms
Co=1.0uF(Ceramic)
Cp=0.01uF
10
100
1k
10k
100k
40
30
30
20
20
0.001
Frequency :f [Hz]
Output Current : Io(mA)
100
NJM2863/64_3.0V
Equivalent Series Resistance vs. Output Current
@:Ta=25 C
VIN=4V
Co=1.0uF(Ceramic)
Cp=0.01uF
o
Equivalent Series Resistance :ESR [ohm]
10
STABLE REGION
1
0.1
0.02
0.001
0.01
0.1
1
10
100
Output Current :Io [mA]
Ver.2004-01-20
-5-
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