NJRC NJM2886DL2-38 Low dropout voltage regulator Datasheet

NJM2886
LOW DROPOUT VOLTAGE REGULATOR
! GENERAL DESCRIPTION
The NJM2886 is low dropout voltage regulator designed for
portable application.
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
! PACKAGE OUTLINE
! 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)
" ON/OFF Contorol
" Internal Short Circuit Current Limit
" Internal Thermal Overload Protection
" Bipolar Technology
" Package Outline
TO-252-5
! PIN CONFIGURATION
NJM2886DL2
3
12345
NJM2886DL2
PIN FUNCTION
1.CONTROL
2.VIN
3.GND
4.VOUT
5.NC
! EQUIVALENT CIRCUIT
VIN
VOUT
Control
Thermal
Protection
Bandgap
Reference
GND
! OUTPUT VOLTAGE RANK LIST
Device Name
VOUT
Device Name
NJM2886DL2-18 1.8V
NJM2886DL2-03
NJM2886DL2-21 2.1V
NJM2886DL2-33
NJM2886DL2-25 2.5V
NJM2886DL2-35
NJM2886DL2-26 2.6V
NJM2886DL2-38
NJM2886DL2-28 2.8V
NJM2886DL2-05
Ver.2004-01-16
VOUT
3.0V
3.3V
3.5V
3.8V
5.0V
-1-
NJM2886
! ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
VIN
(Ta=25°C)
RATINGS
UNIT
+14(*note 1)
V
8(Tc=25°C)
Power Dissipation
PD
mW
0.8(Ta≤25°C)
Operating Temperature
Topr
−40 ∼ +85
°C
Storage Temperature
Tstg
−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
(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
Output Voltage
Vo
Io=30mA
Quiescent Current
IQ
Io=0mA
Quiescent Current
VCONT=0V
IQ(OFF)
at Control OFF
Output Current
Io
Vo-0.3V
Line Regulation
∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6.0V, Io=30mA
Load Regulation
∆Vo/∆Io Io=0 ∼ 500mA
Dropout Voltage
Io=300mA
∆VI−O
ein=200mVrms,f=1kHz, Io=10mA
Ripple Rejection
RR
Vo=3.0V Version
Average Temperature
Coefficient of Output
∆Vo/∆Ta Ta=0∼85°C, Io=10mA
Voltage
f=10Hz∼80kHz, Io=10mA,
Output Noise Voltage
VNO
Vo=3.0V Version
Control Voltage for
VCONT(ON)
ON-state
Control Voltage for
VCONT(OFF)
OFF-state
MIN.
-1.0%
−
TYP.
−
200
MAX.
+1.0%
300
UNIT
V
µA
−
−
100
nA
500
−
−
−
650
−
−
0.18
0.10
0.03
0.28
mA
%/V
%/mA
V
−
75
−
dB
−
±50
−
ppm/°C
−
45
−
µVrms
1.6
−
−
V
−
−
0.6
V
(*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.
-2-
Ver.2004-01-16
NJM2886
! POWER DISSIPATION VS. AMBIENT TEMPERATURE
NJU2886DL2
(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
75
100
Ambient Temperature Ta(°C)
! TEST CIRCUIT
A
IIN
VIN
VIN
0.33µF
A
V
Ver.2004-01-16
VCONT
ICONT
VO
NJM2886
IOUT
V
VO
2.2µF
OR
4.7µF(Vo≤2.6V)
CONTROL
GND
-3-
NJM2886
! TYPICAL APPLICATION
1 In the case where ON/OFF Control is not required:
VIN
VIN
VO
0.33µF
VO
2.2µF
OR
4.7µF(Vo≤2.6V)
NJM2886
R
(0~300kΩ)
CONTROL
GND
Connect control terminal to VIN 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:
VIN
VIN
VO
NJM2886
0.33µF
VO
2.2µF
OR
4.7µF(Vo≤2.6V)
R
CONTROL
GND
State of control terminal:
•“H”→ output is enabled.
•“L” or “open” → output is disabled.
-4-
Ver.2004-01-16
NJM2886
! ELECTRICAL CHARACTERISTICS
NJM2886_3.0V
Output Voltage vs. Input Voltage
3.2
NJM2886_3.0V
Output Voltage vs. Output Current
4
o
o
@:Ta=25 C
Co=2.2uF(Ceramic)
@:Ta=25 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
2.8
2.5
2
1.5
1
Io=300mA
0.5
2.7
2.7
2.8
2.9
3
3.1
3.2
3.3
0
3.4
0
200
NJM2886_3.0V
Ground Pin Current v.s. Output Current
600
800
1000
NJM2886_3.0V
Dropout Voltage vs. Output Current
0.35
30
o
o
@:Ta=25 C
Co=2.2uF(Ceramic)
@:Ta=25 C
VIN=4.0V
Co=2.2uF(Ceramic)
0.3
Dropout Voltage:dVI-O (V)
25
Ground Pin Current : IGND (mA)
400
Output Current : Io(mA)
Input Voltage : V IN(V)
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
NJM2886_3.0V
Control Current vs. Control Voltage
60
200
300
400
500
600
700
Output Current:Io(mA)
Output Current : I O(mA)
NJM2886_3.0V
Output Voltage vs. Control Voltage
4
o
@:Ta=25 C
Vin=4.0V
Co=2.2uF(Ceramic)
Io=30mA
50
3.5
Rc=0Ω
Output Voltage : Vo(V)
Control Current : ICont(uA)
3
40
30
Rc=0Ω
20
Rc=50kΩ
Rc=100kΩ
2.5
Rc=50kΩ
2
1.5
Rc=100kΩ
1
o
@:Ta=25 C
Vin=4.0V
Co=2.2uF(Ceramic)
Io=30mA
10
0.5
0
0
0
0.5
1
1.5
2
2.5
Control Voltage : VCont(V)
Ver.2004-01-16
3
3.5
4
0
0.5
1
1.5
2
2.5
3
Control Voltage : VCont(V)
-5-
NJM2886
! ELECTRICAL CHARACTERISTICS
NJM2886_3.0V
Equivalent Serise Resistance vs. Output Current
NJM2886_3.0V
Output Noise Voltage vs. Output Current
100
100
o
@:Ta=25 C
Co=2.2uF(Ceramic)
o
80
Equivalent Serise Resistance : ESR(Ω)
Output Noise Voltage : Vn(uVrms)
@:Ta=25 C
VIN=4.0V
LPF:80kHz
Co=2.2uF(Ceramic)
60
40
Co=4.7uF(Ceramic)
20
0
0.001
0.01
0.1
1
10
100
10
STABLE REGION
1
0.1
0.02
0.001
1000
0.01
NJM2886_3.0V
Ripple Rejection Ratio v.s. Frequency
1
10
100
10
3
NJM2886_3.0V
Ripple Rejection vs. Output Current
100
100
Io=0mA
90
0.1
Output Current : Io(mA)
Output Current : Io(mA)
90
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
100
30
1k
Frequency : f (Hz)
-6-
Ripple Rejection : RR (dB)
Ripple Rejection Ratio : RR (dB)
f=1kHz
80
80
10k
100k
@:Ta=25 C
VIN=4.0V
ein=200mVrms
Co=2.2uF(Ceramic)
20
0.001
0.01
0.1
1
10
100
1000
Output Current : Io(mA)
Ver.2004-01-16
NJM2886
! ELECTRICAL CHARACTERISTICS
NJM2886_3.0V
Dropout Voltage vs. Temperature
0.4
NJM2886_3.0V
Control Voltage v.s. Temperature
2
@:VIN=4V
Io=30mA
CL=2.2uF(Ceramic)
0.35
Control Voltage :Vcont-off [V]
Dropout Voltage : dVI-O(V)
0.3
0.25
0.2
0.15
0.1
1.5
1
0.5
0.05
@:Io=300mA
Co=2.2uF(Ceramic)
0
-50
0
50
100
0
150
-50
0
Temperature : Ta ( oC)
150
NJM2886_3.0V
Quiescent Current v.s. Input Voltage
300
3.5
@:VIN=4V
Output is open.
Co=2.2uF(Ceramic)
including Icont
250
Quiescent Current : IQ (uA)
3
Output Voltage : Vo(V)
100
o
NJM2886_3.0V
Output Voltage vs. Temperature
4
50
Temperature : Ta ( C)
2.5
2
1.5
1
200
150
100
50
0.5
@:VIN=4.0V
Io=30mA
Co=2.2uF(Ceramic)
0
-50
0
0
50
100
150
o
Temperature : Ta ( C)
Ver.2004-01-16
200
-50
0
50
100
150
o
Temperature : Ta ( C)
-7-
NJM2886
[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.
-8-
Ver.2004-01-16
Similar pages