NJRC NJM2885DL1

NJM2885
LOW DROPOUT VOLTAGE REGULATOR
■ GENERAL DESCRIPTION
The NJM2885 is low dropout voltage regulator designed for
portable application.
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
■ PACKAGE OUTLINE
NJM2885DL1
■ FEATURES
●High Ripple Rejection
75dB typ. (f=1kHz)
●Output Noise Voltage
Vno=45µVrms
●Output capacitor with 2.2µF ceramic capacitor (Vo≥2.7V)
●Output Current
Io(max.)=500mA
●High Precision Output
Vo±1.0%
●Low Dropout Voltage
0.18V typ. (Io=300mA)
●Internal Short Circuit Current Limit
●Internal Thermal Overload Protection
●Bipolar Technology
●Package Outline
TO-252-3
■ PIN CONFIGURATION
2
PIN FUNCTION
1.VIN
2.GND
3.VOUT
1 2 3
NJM2885DL1
■ EQUIVALENT CIRCUIT
VIN
VOUT
Thermal
Protection
Bandgap
Reference
GND
■ OUTPUT VOLTAGE RANK LIST
Device Name
Device Name
VOUT
NJM2885DL1-18
1.8V
NJM2885DL1-30
NJM2885DL1-21
2.1V
NJM2885DL1-33
NJM2885DL1-25
2.5V
NJM2885DL1-35
NJM2885DL1-26
2.6V
NJM2885DL1-38
NJM2885DL1-28
2.8V
NJM2885DL1-05
VOUT
3.0V
3.3V
3.5V
3.8V
5.0V
NJM2885
■ ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
VIN
Power Dissipation
Operating Temperature
Storage Temperature
PD
Topr
Tstg
RATINGS
+14
8(Tc=25°C)
0.8(Ta≤25°C)
-40 ∼ +85
-40 ∼ +125
(Ta=25°C)
UNIT
V
mW
°C
°C
■ ELECTRICAL CHARACTERISTICS
(VIN=Vo+1V, CIN=0.33µF, Co=2.2µF: Vo≥2.7V (Co=4.7µF: Vo≤2.6V), Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX.
Output Voltage
Vo
Io=30mA
-1.0%
+1.0%
−
Quiescent Current
IQ
Io=0mA
200
300
−
Output Current
Io
Vo-0.3V
500
650
Line Regulation
0.10
∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6.0V, Io=30mA
−
−
Load Regulation
0.03
∆Vo/∆Io Io=0 ∼ 500mA
−
−
Dropout Voltage
Io=300mA
0.18
0.28
∆VI−O
−
ein=200mVrms,f=1kHz, Io=10mA
Ripple Rejection
RR
75
−
−
Vo=3.0V Version
Average Temperature
∆Vo/∆Ta Ta=0∼85°C, Io=10mA
±50
−
−
Coefficient of Output Voltage
f=10Hz∼80kHz, Io=10mA,
Output Noise Voltage
VNO
45
−
−
Vo=3.0V Version
(*note 1): 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
mA
%/V
%/mA
V
dB
ppm/°C
µVrms
NJM2885
■ TEST CIRCUIT
A
VIN
IIN
VIN
VOUT
IOUT V VOUT
NJM2885
0.33µF
2.2µF
OR
4.7µF(Vo≤2.6V)
GND
(ceramic)
■ POWER DISSIPATION VS. AMBIENT TEMPERATURE
NJU2885DL1
(Topr=-40~+85°C,Tj=125°C,PD=8W(TC=25°C),PD=0.8W(Ta≤25°C))
Power Dissipation PD(W)
10
∞ Heat Sink
8
θHS=5°C/W
6
θHS=10°C/W
4
θHS=20°C/W
2
Without Heat Sink
0
-50
-25
0
25
50
Ambient Temperature Ta(°C)
75
100
NJM2885
■ ELECTRICAL CHARACTERISTICS
NJM2885_3.0V
Output Voltage vs. Input Voltage
3.2
NJM2885_3.0V
Output Voltage vs. Output Current
4
@:Ta=25 oC
Co=2.2uF (Ceramic)
@:Ta=25o C
VIN=4.0V
Co=2.2uF(Ceramic)
3.5
3.1
Output Voltage : Vo(V)
Output Voltage : Vo(V)
3
Io=0A
3
2.9
Io=100mA
2.5
2
1.5
1
2.8
Io=300mA
2.7
2.7
0.5
0
2.8
2.9
3
3.1
3.2
3.3
3.4
0
200
NJM2885_3.0V
Ground Pin Current v.s. Output Current
@:Ta=25o C
VIN=4.0V
Co=2.2uF(Ceramic)
1000
o
0.3
20
15
10
5
0.25
0.2
0.15
0.1
0.05
0
0
0
100
200
300
400
500
600
0
700
100
Output Current : IO(mA)
100
60
40
Co=4.7uF(Ceramic)
0.1
1
10
Output Current : Io(mA)
500
600
700
o
@:Ta=25 C
VIN=4.0V
Co=2.2uF(Ceramic)
Equivalent Serise Resistance : ESR(Ħ)
Co=2.2uF(Ceramic)
0.01
400
100
80
0
0.001
300
NJM2885_3.0V
Equivalent Serise Resistance vs. Output Current
NJM2885_3.0V
Output Noise Voltage vs. Output Current
20
200
Output Current:Io(mA)
@:Ta=25 oC
VIN=4.0V
LPF:80kHz
Output Noise Voltage : Vn(uVrms)
800
@:Ta=25 C
Co=2.2uF (Ceramic)
Dropout Voltage:dVI-O (V)
Ground Pin Current : IGND (mA)
25
600
NJM2885_3.0V
Dropout Voltage vs. Output Current
0.35
30
400
Output Current : Io(mA)
Input Voltage : VIN(V)
100
1000
10
STABLE REGION
1
0.1
0.02
0.001
0.01
0.1
1
10
Output Current : Io(mA)
100
3
10
NJM2885
■ ELECTRICAL CHARACTERISTICS
NJM2885_3.0V
Ripple Rejection Ratio v.s. Frequency
Io=0mA
90
NJM2885_3.0V
Ripple Rejection vs. Output Current
100
100
90
Ripple Rejection Ratio : RR (dB)
f=1kHz
80
Ripple Rejection : RR (dB)
80
70
Io=10mA
Io=30mA
60
50
40
70
f=10kHz
60
50
40
o
o
@:Ta=25 C
VIN=4.0V
ein=200mVrms
Co=2.2uF(Ceramic)
30
20
10
0.4
30
1k
100
10k
@:Ta=25 C
VIN=4.0V
ein=200mVrms
Co=2.2uF (Ceramic)
20
0.001
100k
0.01
0.1
1
10
100
Frequency : f (Hz)
Output Current : Io(mA)
NJM2885_3.0V
Dropout Voltage vs. Temperature
NJM2885_3.0V
Quiescent Current v.s. Input Voltage
1000
300
@:VIN=4V
Output is open.
Co=2.2uF(Ceramic)
0.35
250
Quiescent Current : IQ (uA)
I-O
Dropout Voltage : dV (V)
0.3
0.25
0.2
0.15
0.1
200
150
100
50
0.05
@:Io=300mA
Co=2.2uF(Ceramic)
0
0
-50
0
50
100
150
o
4
3.5
Output Voltage :Vo [V]
3
2.5
2
1.5
1
@:VIN=4.0V
Io=30mA
CL=2.2uF(Ceramic)
0
-50
0
50
100
150
o
Temperature :Ta [ C]
0
50
100
Temperature :Ta [ C]
NJM2885_3.0V
Output Voltage v.s. Temperature
0.5
-50
o
Temperature :Ta [ C]
200
150
NJM2885
[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.