NJM2883
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
The NJM2883 is a low dropout voltage regulator in SOP8
package
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
It is suitable for portable applications.
FEATURES
High Ripple Rejection
75dB typ. (f=1kHz,Vo=3V Version)
Output Noise Voltage
Vno=30µVrms typ.(Cp=0.01µF)
Output capacitor with 1.0µF ceramic capacitor (Vo≥2.7V)
Output Current
Io(max.)=300mA
High Precision Output
Vo±1%
Low Dropout Voltage
0.10V typ. (Io=100mA)
ON/OFF Control
(Active High)
Operating Voltage Range +2.3V∼+14V (Vo≤2.0V version)
Internal Short Circuit Current Limit
Internal Thermal Overload Protection
Bipolar Technology
Package Outline
SOP8 JEDEC 150mil
PIN CONFIGURATION
1
2
3
4
8
7
6
5
PACKAGE OUTLINE
NJM2883E
( SOP8 )
PIN FUNCTION
1. V
OUT
2. GND
3. GND
4. NOISE BYPASS
5. CONTROL (Active High)
6. GND
7. GND
8. V
IN
NJM2883E
EQUIVALENT CIRCUIT
V
IN
Control
Bandgap
Reference
Thermal
Protection
Noise
Bypass
V
OUT
GND
Ver.2011-12-08
-1-
NJM2883
OUTPUT VOLTAGE RANK LIST
Device Name
Device Name
V
OUT
NJM2883E15
1.5V
NJM2883E29
NJM2883E17
1.7V
NJM2883E03
NJM2883E18
1.8V
NJM2883E31
NJM2883E21
2.1V
NJM2883E32
NJM2883E25
2.5V
NJM2883E33
NJM2883E28
2.8V
NJM2883E345
NJM2883E285
2.85V
NJM2883E35
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
Control Voltage
V
CONT
Power Dissipation
P
D
Operating Temperature
Topr
Storage Temperature
Tstg
V
OUT
2.9V
3.0V
3.1V
3.2V
3.3V
3.45V
3.5V
Device Name
NJM2883E38
NJM2883E04
NJM2883E43
NJM2883E47
NJM2883E05
V
OUT
3.8V
4.0V
4.3V
4.7V
5.0V
(Ta=25°C)
RATINGS
UNIT
+14
V
+14(*1)
V
650(*2)
mW
-40
∼
+85
°C
-40
∼
+125
°C
(*1): When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage.
(*2): Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers)
OPRATING VOLTAGE
V
IN
=+2.3V
∼
+14.0V (In case of Vo<2.1V)
ELECTRICAL CHARACTERISTICS
(Vo>2.0V version : 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. MAX.
Output Voltage
Vo
Io=30mA
-1.0%
+1.0%
−
Quiescent Current
I
Q
Io=0mA, expect Icont
120
180
−
Quiescent Current
V
CONT
=0V
100
I
Q(OFF)
−
−
at Control OFF
Output Current
Io
Vo - 0.3V
300
400
-
0.10
Line Regulation
−
−
∆Vo/∆V
IN
V
IN
=Vo+1V∼Vo+6V, Io=30mA
Load Regulation
0.03
∆Vo/∆Io
Io=0∼300mA
−
−
Io=100mA
0.10
0.18
Dropout Voltage
−
∆V
I−O
ein=200mVrms,f=1kHz, Io=10mA,
Ripple Rejection
RR
75
−
−
Vo=3V Version
Average Temperature
∆Vo/∆Ta
Ta=0∼+85°C, Io=10mA
−
±50
−
Coefficient of Output Voltage
f=10Hz∼80kHz, Io=10mA,
30
Output Noise Voltage
V
NO
−
−
Vo=3V Version
Control Voltage for ON-state
V
CONT(ON)
1.6
−
−
Control Voltage for OFF-state
V
CONT(OFF)
0.6
−
−
UNIT
V
µA
nA
mA
%/V
%/mA
V
dB
ppm/°C
µVrms
V
V
-2-
Ver.2011-12-08
NJM2883
(Vo≤2.0V version: V
IN
=Vo+1V, C
IN
=0.1µF, Co=2.2µF: Vo≥1.9V (Co=4.7µF: Vo≤1.8V), Cp=0.01µF, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX.
Output Voltage
Vo
Io=30mA
-1.0%
+1.0%
−
Quiescent Current
I
Q
Io=0mA, expect Icont
120
180
−
Quiescent Current
I
Q(OFF)
V
CONT
=0V
100
−
−
at Control OFF
Output Current
Io
Vo - 0.3V
300
400
-
0.10
Line Regulation
−
−
∆Vo/∆V
IN
V
IN
=Vo+1V∼Vo+6V, Io=30mA
Load Regulation
0.03
∆Vo/∆Io
Io=0∼300mA
−
−
ein=200mVrms, f=1kHz, Io=10mA,
Ripple Rejection
RR
80
−
−
Vo=1.8V Version
Average Temperature
∆Vo/∆Ta
Ta=0∼85°C, Io=10mA
−
±50
−
Coefficient of Output Voltage
f=10Hz∼80kHz, Io=10mA,
20
Output Noise Voltage
V
NO
−
−
Vo=1.8V Version
Control Voltage for ON-state
V
CONT(ON)
1.6
−
−
Control Voltage for OFF-state
V
CONT(OFF)
0.6
−
−
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.
UNIT
V
µA
nA
mA
%/V
%/mA
dB
ppm/°C
µVrms
V
V
TEST CIRCUIT
A
I
IN
V
IN
V
OUT
I
OUT
V V
OUT
V
IN
0.1
µ
F
NJM2883
1.0
µ
F
*3
(ceramic)
A
I
CONT
CONTROL
GND
NOISE
BYPASS
Cp=0.01
µ
F
V
V
CONT
*3
1.9V
≤
Vo
≤
2.6V version: Co=2.2
µ
F(ceramic)
Vo
≤
1.8V version: Co=4.7
µ
F(ceramic)
Ver.2011-12-08
-3-
NJM2883
TYPICAL APPLICATION
1
In case that ON/OFF Control is not required:
V
IN
V
IN
0.1µF
NJM2883
R
(0
∼
300kΩ)
CONTROL
GND
1.0µF
*4
V
OUT
V
OUT
NOISE
BYPASS
Cp=0.01µF
*4 1.9V
≤
Vo
≤
2.6V version: Co=2.2µF
Vo
≤
1.8V version: Co=4.7µF
Connect control terminal to V
IN
terminal
2
In use of ON/OFF CONTROL:
V
IN
V
IN
V
OUT
V
OUT
0.1µF
R
NJM2883
1.0µF
*4
CONTROL
GND
NOISE
BYPASS
Cp=0.01µF
*4 1.9V
≤
Vo
≤
2.6V version : Co=2.2uF
Vo
≤
1.8V version : Co=4.7uF
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.
In the case of using a resistance "R" between V
IN
and control.
The current flow into the control terminal while the IC is ON state (I
CONT
) can be reduced when a pull up resistance
"R" is inserted between V
IN
and the control terminal.
The minimum control voltage for ON state (V
CONT (ON)
) is increased due to the voltage drop caused by I
CONT
and the
resistance "R". The I
CONT
is temperature dependence as shown in the "Control Current vs. Temperature"
characteristics. Therefore, the resistance "R" should be carefully selected to ensure the control voltage exceeds
the V
CONT (ON)
over the required temperature range.
-4-
Ver.2011-12-08
NJM2883
ELECTRICAL CARACTERISTICS
NJM2883_3.0V
Output Voltage v.s. Input Voltage
@Ta=25
℃
Co=1.0uF(Ceramic)
Cp=0.01uF
Io=0mA
Output Voltage : Vo [V]
NJM2883_3.0V
Output Voltage v.s. Output Current
3.5
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
3.3
Output Voltage : Vo [V]
3.1
2.9
Io=300mA
Io=100mA
2.5
2.5
2.7
2.9
3.1
3.3
3.5
Input Voltage : Vi [V]
2.7
@Ta=25
℃
Co=1.0uF(Ceramic)
Cp=0.01uF
100
200
300
400
500
600
Output Current : Io [mA]
20
Ground Pin Current : IGND [mA
NJM2883_3.0V
Ground Pin Current v.s. Output Current
@Ta=25
℃
Co=1.0uF(Ceramic)
Cp=0.01uF
0.30
0.25
Dropout Voltage : dVi-o [V]
0.20
0.15
0.10
0.05
NJM2883_3.0V
Dropout Voltage v.s. Output Current
16
@Ta=25
℃
Co=1.0uF(Ceramic)
Cp=0.01uF
12
8
4
0
0
125
250
375
500
Output Current : Io [mA]
NJM2883_3.0V
Control Current v.s. Control Voltage
@Ta=25
℃
Co=1.0uF(Ceramic)
Cp=0.01uF
Io=30mA
Rc=100kΩ
Rc=50kΩ
Rc=0Ω
0.00
0
100
200
300
400
500
Output Current : Io
[mA]
[A]
NJM2883_3.0V
Output Voltage v.s. Control Voltage
20
3.5
3.0
Output Voltage : Vo [V]
2.5
2.0
1.5
1.0
0.5
0.0
Control Current : Icont [uA]
16
12
Rc=100kΩ
Rc=50kΩ
Rc=0Ω
@Ta=25
℃
Co=1.0uF(Ceramic)
Cp=0.01uF
Io=30mA
1.5
2.0
2.5
3.0
8
4
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.0
0.5
1.0
Control Voltage : Vcont [V]
Control Voltage : Vcont [V]
Ver.2011-12-08
-5-
stm32/stm8
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