NJM2863/64
LOW DROPOUT VOLTAGE REGULATOR
s
GENERAL DESCRIPTION
The NJM2863/64 is a low dropout voltage regulator designed
for VCO application.
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
s
FEATURES
qHigh
Ripple Rejection
qOutput
Noise Voltage
s
PACKAGE OUTLINE
NJM2863F
NJM2864F
75dB typ. (f=1kHz)
Vno=19µVrms typ. (Cp=0.01µF, Co=1.0µF(Ceramic))
Vno=12µVrms typ. (Cp=0.1µF, Co=10µF(Tantalum))
qOutput
capacitor with 1.0uF ceramic capacitor
qOutput
Current
Io(max.)=100mA
qHigh
Precision Output
Vo±1%
qLow
Dropout Voltage
0.10V typ. (Io=60mA)
qON/OFF
Control
(Active High)
qInternal
Short Circuit Current Limit
qInternal
Thermal Overload Protection
qBipolar
Technology
MTP5 (MTP5:2.8×2.9×1.1mm)
qPackage
Outline
s
PIN CONFIGURATION
1
2
3
4
5
NJM2863F
s
EQUIVALENT CIRCUIT
PIN FUNCTION
5
1. CONTROL (Active High)
1
2
2. GND
3. NOISE BYPASS
3
4
4. V
OUT
5. V
IN
NJM2864F
PIN FUNCTION
1.V
IN
2.GND
3.CONTROL (Active High)
4.NOISE BYPASS
5.V
OUT
V
IN
Cont
Thermal
Protection
V
OUT
Noise
Bypass
Bandgap
Reference
GND
s
OUTPUT VOLTAGE RANK LIST
Device Name
V
OUT
2.7V
NJM286×F27
2.8V
NJM286×F28
2.9V
NJM286×F29
3.0V
NJM286×F03
Ver.2003-03-10
-1-
NJM2863/64
s
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.
s
ELECTRICAL CHARACTERISTICS
(V
IN
=Vo+1V, C
IN
=0.1µF, Co=1.0uF, Cp=0.01µF, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP.
Io=30mA
Output Voltage
Vo
-1%
−
Io=0mA, expect Icont
Quiescent Current
120
I
Q
−
Quiescent Current
V
CONT
=0V
I
Q(OFF)
−
−
at Control OFF
Output Current
Io
100
130
Vo−0.3V
Line Regulation
∆Vo/∆V
IN
V
IN
=Vo+1V
∼
Vo+6V, Io=30mA
−
−
Load Regulation
∆Vo/∆Io
Io=0
∼
60mA
−
−
Dropout Voltage
Io=60mA
0.10
∆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,
Output Noise Voltage 1
V
NO1
19
−
Cp=0.01µF, Co=1.0uF(Ceramic)
Vo=3V Version
f=10Hz∼80kHz, Io=10mA,
Output Noise Voltage 2
V
NO2
12
−
Cp=0.1µF, Co=10uF(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.
s
TEST CIRCUIT
A
V
IN
0.1uF
1.0uF
(ceramic)
I
IN
V
IN
V
OUT
I
OUT
MAX.
+1%
180
100
-
0.10
0.03
0.18
−
−
−
−
−
0.6
UNIT
V
µA
nA
mA
%/V
%/mA
V
dB
ppm/°C
µVrms
µVrms
V
V
V
V
OUT
A
V
V
CONT
I
CONT
CONTROL
GND
NOISE
BYPASS
Cp=0.01uF
-2-
Ver.2003-03-10
NJM2863/64
s
TYPICAL APPLICATION
x
In case that ON/OFF Control is not required:
V
IN
V
IN
0.1uF
V
OUT
1.0uF
(ceramic)
V
OUT
R
(0
∼
300kΩ)
CONTROL
GND
NOISE
BYPASS
Cp=0.01uF
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”.
y
In use of ON/OFF CONTROL:
V
IN
V
IN
V
OUT
1.0uF
(ceramic)
V
OUT
0.1uF
R
CONTROL
GND
NOISE
BYPASS
Cp=0.01uF
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 0.01uF greater to avoid the problem.
Ver.2003-03-10
-3-
NJM2863/64
[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.
-4-
Ver.2003-03-10
单片机
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
