NJRC NJM2860F3-33-TE1 Low dropout voltage regulator Datasheet

NJM2845/46
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
The NJM2845/46 is low dropout voltage regulator. Advanced
Bipolar technology achieves low noise, high ripple rejection
and low quiescent current.
NJM2845 is 3 terminal type and NJM2846 is ON/OFF control
built in type. These product can be selected according to the
applications.
PACKAGE OUTLINE
NJM2845DL1
NJM2846DL3
FEATURES
High Ripple Rejection
75dB typ. (f=1kHz,3V Version)
Output Noise Voltage
Vno=45µVrms typ. (Vo=3V Version)
Output capacitor with 2.2µF ceramic capacitor (Vo≥2.6V)
Output Current
Io(max.)=800mA
High Precision Output
Vo ±1.0%
Low Dropout Voltage
0.18V typ. (Io=500mA)
ON/OFF Control
(NJM2846)
Internal Short Circuit Current Limit
Internal Thermal Overload Protection
Bipolar Technology
Package Outline
TO-252-3 (NJM2845DL1), TO-252-5 (NJM2846DL3)
PIN CONFIGURATION
2
1.VIN
2.GND
3.VOUT
1
3
3
123 45
NJM2845DL1
1.CONTROL
2.VIN
3.GND
4.Vo
5.NC
NJM2846DL3
EQUIVALENT CIRCUIT
VIN
VOUT
Thermal
Protection
VIN
Control
GND
NJM2845DL1
Ver.2008-02-06
Thermal
Protection
Bandgap
Reference
Bandgap
Reference
GND
VOUT
NJM2846DL3
-1-
NJM2845/46
OUTPUT VOLTAGE
Device Name
VOUT
NJM284*DL*-15
1.5V
NJM284*DL*-18
1.8V
NJM284*DL-*02
2.0V
NJM284*DL*-22
2.2V
NJM284*DL*-23
2.3V
NJM284*DL*-25
2.5V
NJM284*DL*-03
3.0V
NJM284*DL*-33
3.3V
NJM284*DL*-04
4.0V
NJM284*DL*-05
5.0V
Output voltage options available : 1.5 ~ 5.0V (0.1V step)
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
VIN
Control Voltage
VCONT
Power Dissipation
PD
(Ta=25°C)
RATINGS
UNIT
+14
V
+14(*1)
V
10(Tc≤25°C)
W
1.0(Ta≤25°C)
Operating
Topr
-40 ∼ +85
°C
Temperature
Storage
Tstg
-40 ∼ +150
°C
Temperature
(*1): When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage.
Operating voltage
VIN=+2.5V(In case of Vo<2.3V) ~ +(Vo+9V)
NJM2845
ELECTRICAL CHARACTERISTICS
(VIN=Vo+1V, CIN=0.33µF ,Co=2.2µF(1.7V<Vo≤2.6V:Co=4.7µF, Vo≤1.7V: Co=10µF), Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
Output Voltage
Vo
Io=30mA
-1.0%
Quiescent Current
IQ
Io=0mA
400
Output Current
Io
Vo - 0.3V
800
1050
Line Regulation
∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6V, Io=30mA
Load Regulation
∆Vo/∆Io
Io=0 ∼ 800mA
Io=500mA
0.18
Dropout Voltage(*2)
∆VI -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
VNO
45
Vo=3V Version
(*2): The output voltage excludes under 2.3V.
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-
MAX.
+1.0%
600
0.10
0.004
0.28
UNIT
V
µA
mA
%/V
%/mA
V
-
dB
-
ppm/°C
-
µVrms
Ver.2008-02-06
NJM2845/46
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJM2845DL1
(Topr=-40~+85°C,Tj=+150°C,PD=10W(TC≤25°C),PD=1W(Ta≤25°C))
Power Dissipation PD(W)
12
10
∞ Heat Sink
8
θHS=5°C/W
6
θHS=10°C/W
θHS=20°C/W
4
2
Without Heat Sink
0
-50
-25
0
25
50
75
100
Ambient Temperature Ta(°C)
TEST CIRCUIT
A
VIN
IIN
VIN
0.33µF
VOUT
NJM2845
2.2µF
*3
IOUT V VOU
(ceramic)
GND
*3
1.7V<Vo≤2.6V version: Co=4.7µF, Vo≤1.7V: Co=10µF(ceramic)
TYPICAL APPLICATION
VIN
VIN
0.33µF
VOUT
NJM2845
VOUT
2.2µF *4
GND
*4
Ver.2008-02-06
1.7V<Vo≤2.6V version: Co=4.7µF, Vo≤1.7V: Co=10µF
-3-
NJM2845/46
NJM2846
ELECTRICAL CHARACTERISTICS
(VIN=Vo+1V, CIN=0.33µF, Co=2.2µF(1.7V<Vo≤2.6V version: Co=4.7µF, Vo≤1.7V: Co=10µF), Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
Output Voltage
Vo
Io=30mA
-1.0%
Quiescent Current
IQ
Io=0mA
400
Quiescent Current
VCONT=0V
IQ (OFF)
at Control OFF
Line Regulation
Io
Vo - 0.3V
800
1050
Line Regulation
∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6V, Io=30mA
Load Regulation
∆Vo/∆Io
Io=0 ∼ 800mA
Io=500mA
0.18
Dropout Voltage(*5)
∆VI -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
VNO
45
Vo=3V Version
Control Current
ICONT
VCONT=1.6V, Io=0mA
3
Control Voltage for ON-state
VCONT(ON)
1.6
Control Voltage for OFF-state
VCONT(OFF)
-
MAX.
+1.0%
600
UNIT
V
µA
100
nA
0.10
0.004
0.28
mA
%/V
%/mA
V
-
dB
-
ppm/°C
-
µVrms
12
0.6
µA
V
V
(*5): The output voltage excludes under 2.3V.
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.
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJM2846DL3
(Topr=-40~+85°C,Tj=+150°C,PD=10W(TC≤25°C),PD=1W(Ta≤25°C))
Power Dissipation PD(W)
12
10
∞ Heat Sink
8
θHS=5°C/W
6
θHS=10°C/W
θHS=20°C/W
4
2
Without Heat Sink
0
-50
-25
0
25
50
75
100
Ambient Temperature Ta(°C)
-4-
Ver.2008-02-06
NJM2845/46
TEST CIRCUIT
A
IIN
VIN
VIN
0.33µF
A
V VCONT
*6
Ver.2008-02-06
ICONT
VOUT
NJM2846
2.2µF *6
IOUT V VOU
(ceramic)
CONTROL
GND
1.7V<Vo≤2.6V version: Co=4.7µF, Vo≤1.7V: Co=10µF
-5-
NJM2845/46
TYPICAL APPLICATIONS
1 In the case where ON/OFF Control is not required:
VIN
VIN
0.33µF
VOUT
NJM2846
VOUT
2.2µF *7
R
(0〜300kΩ)
CONTROL
GND
*7
1.7V<Vo≤2.6V version: Co=4.7µF, Vo≤1.7V: Co=10µF
Connect control terminal to VIN terminal
2 In use of ON/OFF CONTROL:
VIN
VIN
VOUT
NJM2846
0.33µF
VOUT
2.2µF *7
R
CONTROL
GND
*7
1.7V<Vo≤2.6V version: Co=4.7µF, Vo≤1.7V: Co=10µF
State of control terminal:
•“H”→ output is enabled.
•“L” or “open” → output is disabled.
In the case of using a resistance "R" between VIN and control.
The current flow into the control terminal while the IC is ON state (ICONT) can be reduced when a pull up resistance
"R" is inserted between VIN and the control terminal.
The minimum control voltage for ON state (VCONT (ON)) is increased due to the voltage drop caused by ICONT and the
resistance "R". The ICONT 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
VCONT (ON) over the required temperature range.
-6-
Ver.2008-02-06
NJM2845/46
Input Capacitance CIN
Input capacitance CIN is required to prevent oscillation and reduce power supply ripple for applications with high
power supply impedance or a long power supply line.
Use the CIN value of 0.33µF greater to avoid the problem.
CIN should connect between GND and VIN as short as possible.
Output Capacitance CO
Output capacitor (Co) is required for a phase compensation of the internal error amplifier. The capacitance and the
equivalent series resistance (ESR) influences stability of the regulator.
This product is designed to work with a low ESR capacitor for the Co; however, use of recommended capacitance or
greater value is essential for stable operation.
Use of a smaller Co may cause excess output noise or oscillation of the regulator due to lack of the phase
compensation.
Therefore, use Co with the recommended capacitance or greater value and connect between Vo terminal and GND
terminal with minimal wiring. The recommended capacitance depends on the output voltage. Low voltage regulator
requires greater value of the Co. Thus, check the recommended capacitance for each output voltage.
Use of a greater Co reduces output noise and ripple output, and also improves transient response of the output
voltage against rapid load change.
Ver.2008-02-06
-7-
NJM2845/46
TYPICAL CHARACTERISTICS (NJM2845)
NJM2845_3.0V
Output Voltage vs. Input Voltage
3.3
NJM2845_3.0V
Output Voltage vs. Output Current
4
o
@:Ta=25 C
Co=2.2µF(Ceramic)
3.5
3.2
Output Voltage : Vo(V)
Output Voltage : Vo(V)
3
3.1
Io=0A
3
2.9
2.5
2
1.5
1
Io=200mA
2.8
o
@:Ta=25 C
V IN=4V
Co=2.2µF(Ceramic)
0.5
Io=500mA
2.7
2.7
2.8
2.9
3
3.1
0
3.2
3.3
0
500
NJM2845_3.0V
Ground Pin Current vs. Output Current
35
1000
1500
2000
Output Current : Io(mA)
Input Voltage : VIN(V)
NJM2845_3V
Dropout Voltage vs. Output Current
0.35
o
@:Ta=25 C
Co=2.2µF(Ceramic)
0.3
25
Dropout Voltage:dVI-O (V)
Ground Pin Current : IGND (mA)
30
20
15
10
5
0.25
0.2
0.15
0.1
0.05
@:Ta=25 oC
V IN=4.0V
Co=2.2µF(Ceramic)
0
0
0
200
400
600
800
0
1000
200
NJM2845_3.0V
Load Regulation vs. Output Current
0
400
600
800
1000
Output Current:Io(mA)
Output Current : IO(mA)
NJM2845_3.0V
Peak Output Current vs. Input Voltage
2500
2000
-20
Peak Output Current : IoMAX(mA)
Load Regulation : dVo/dIo(mV)
-10
-30
-40
-50
-60
@:Ta=25 oC
V IN=4.0V
Co=2.2µF(Ceramic)
-70
200
500
0
400
600
Output Current : Io(m A)
-8-
1000
@:Ta=25oC
Co=2.2µF(Ceramic)
-80
0
1500
800
1000
4
6
8
10
12
14
Input Voltage : VIN(V)
Ver.2008-02-06
NJM2845/46
TYPICAL CHARACTERISTICS (NJM2845)
NJM2845_3.0V
Quiescent Current vs. Input Voltage
2500
NJM2845_3.0V
Output Noise Voltage vs. Output Current
100
@:Ta=25oC
V IN=4.0V
LPF:80kHz
Co=2.2µF(ceramic)
o
@:Ta=25 C
Output is open.
Co=2.2µF(Ceramic)
Output Noise Voltage : Vn(µ Vrms)
Quiescent Current : IQ (µA)
2000
1500
1000
500
5
10
60
40
20
0
0.001
0
0
80
15
0.01
Input Voltage : VIN(V)
NJM2845_3.0V
Ripple Rejection Ratio vs. Frequency
100
Io=10mA
Io=0mA
90
80
70
60
Io=30mA
Io=100mA
50
40
20
10
10
100
1000
f=1kHz
70
f=10kHz
60
50
40
o
30
1k
1000
100
100
100k
105
4
10k
10
Frequency : f (Hz)
@:Ta=25 C
V IN=4V
ein=200mVrms
Co=2.2µF(Ceramic)
20
0.001
0.01
0.1
1
10
100
1000
Output Current : Io(mA)
NJM2845_3.0V
Equivalent Serise Resistance vs. Output Current
100
Equivalent Serise Resistance : ESR(Ω)
10
80
o
@:Ta=25 C
V IN=4V
ein=200mVrms
Co=2.2µF(Ceramic)
30
1
NJM2845_3V
Ripple Rejection vs. Output Current
100
Ripple Rejection : RR (dB)
Ripple Rejection Ratio : RR (dB)
90
0.1
Output Current : Io(mA)
@:Ta=25oC
Co=2.2µF(Ceramic)
V IN=4.0V
10
STABLE REGION
1
0.1
0.02
0.001
0.01
0.1
1
10
100
103
Output Current : Io(m A)
Ver.2008-02-06
-9-
NJM2845/46
TYPICAL CHARACTERISTICS (NJM2845)
NJM2845_3.0V
Dropout Voltage vs. Temperature
0.4
Io=500mA
Co=2.2µF(Ceramic)
0.35
3.05
Output Voltage : Vo(V)
0.3
Dropout Voltage:dVI-O (V)
NJM2845_3.0V
Output Voltage vs. Temperature
3.1
0.25
0.2
0.15
0.1
3
2.95
@:VIN=4.0V
Io=30mA
Co=2.2µF(Ceramic)
0.05
2.9
0
-50
0
50
100
-50
150
0
NJM2845_3.0V
Quiescent Current v.s. Input Voltage
150
NJM2845_3.0V
Short Circuit Current v.s. Temperature
1000
600
@:VIN=4.0V
Output is open.
Co=2.2µF(Ceramic)
500
100
Temperature : Ta ( C)
Temperature : Ta ( C)
@:VIN=4.0V
Co=2.2µF(Ceramic)
Output is short to ground.
800
Short Circuit Current : Isc (mA)
Quiescent Current : IQ (mA)
50
o
o
400
300
200
100
600
400
200
0
0
-50
0
50
100
-50
150
0
50
o
NJM2845_3.0V
Line Regulation vs. Temperature
0.1
100
150
200
Temperature : Ta (oC)
Temperature : Ta ( C)
0.03
NJM2845_3.0V
Load Regulation vs. Temperature
@:V IN=4.0V
Io=0-800mA
Co=2.2µF(Ceramic)
Load Regulation : dVo/dIo(%/mA)
Line Regulation : dVo/dIo(%/V)
0.025
0.05
0
-0.05
-0.1
@:VIN=4.0-9.0V
Io=30mA
Co=2.2µF(Ceramic)
-50
0
50
o
Temperature : Ta ( C)
- 10 -
100
150
0.02
0.015
0.01
0.005
0
-50
0
50
o
100
150
Temperature : Ta ( C)
Ver.2008-02-06
NJM2845/46
TYPICAL CHARACTERISTICS (NJM2845)
NJM2845_3.0V
Peak Output Current vs. Input Voltage
2000
NJM2845_3.0V
Output Voltage vs. Temperature
4
3.5
3
Output Voltage : Vo(V)
1000
500
2.5
2
1.5
1
0.5
@:Ta=25 oC
Co=2.2µF(Ceramic)
@:VIN=4.0V
Io=30mA
Co=2.2µF(Ceramic)
0
0
-50
0
50
100
-50
150
0
NJM2845_3V
Line Transient Response
3.08
6
3.25
5
3.2
800
Output Current
3.04
3
Output Voltage
3.02
2
3
1
o
0
@:Ta=25 C
VIN=4V
Co=2.2µF
Io=30mA
3.15
700
3.1
600
3.05
500
3
400
Output Voltage
2.95
300
o
2.94
Ver.2008-02-06
Output Voltage : Vo [V]
4
Input Voltage : VIN [V]
Output Voltage : Vo [V]
3.06
40
200
900
Input Voltage
0
150
NJM2845_3V
Load Transient Response
3.1
2.96
100
Temperature : Ta ( C)
Temperature : Ta ( C)
2.98
50
o
o
Output Current : Io [mA]
Peak Output Current : IoMAX(mA)
1500
80
120
Time : t [µs]
160
-1
2.9
-2
200
2.85
@:Ta=25 C
VIN=4V
Co=2.2µF
0
40
80
120
Time : t [µs]
160
200
100
200
- 11 -
NJM2845/46
TYPICAL CHARACTERISTICS (NJM2846)
NJM2846_3.0V
Output Voltage vs. Input Voltage
3.3
NJM2846_3.0V
Output Voltage vs. Output Current
4
o
@:Ta=25 C
Co=2.2µF(Ceramic)
@:Ta=25oC
V IN=4.0V
Co=2.2µF(Ceramic)
3.5
3.2
Output Voltage : Vo(V)
Output Voltage : Vo(V)
3
3.1
Io=0A
3
2.9
2.5
2
1.5
1
Io=200mA
2.8
0.5
Io=500mA
2.7
2.7
2.8
2.9
3
3.1
3.2
0
3.3
0
500
Input Voltage : VIN(V)
1000
1500
2000
Output Current : Io(mA)
NJM2846_3.0V
Ground Pin Current v.s. Output Current
35
NJM2846_3.0V
Dropout Voltage vs. Output Current
0.35
o
30
0.3
25
0.25
Dropout Voltage:dVI-O (V)
Ground Pin Current : IGND (mA)
@:Ta=25 C
Co=2.2µF(Ceramic)
20
15
10
o
5
0.2
0.15
0.1
0.05
@:Ta=25 C
VIN=4.0V
Co=2.2µF(Ceramic)
0
0
0
200
400
600
800
0
1000
200
400
NJM2846_3.0V
Control Current vs. Control Voltage
60
800
1000
NJM2846_3.0V
Output Voltage vs. Control Voltage
3.5
@:Ta=25oC
V IN=4.0V
Co=2.2µF(Ceramic)
Io=30mA
50
600
Output Current:Io(mA)
Output Current : IO(mA)
3
Output Voltage : Vo(V)
40
Control Current : I
Cont
(µA)
Rc=0Ω
2.5
30
Rc=0Ω
20
Rc=100kΩ
Rc=50kΩ
1.5
Rc=100kΩ
1
o
10
@:Ta=25 C
V IN=4.0V
Co=2.2µF(Ceramic)
Io=30mA
0.5
0
0
0
0.5
1
1.5
2
2.5
Control Voltage : V
3
(V)
Cont
- 12 -
Rc=50kΩ
2
3.5
4
0
0.5
1
1.5
2
Control Voltage : V
2.5
3
(V)
Cont
Ver.2008-02-06
NJM2845/46
TYPICAL CHARACTERISTICS (NJM2846)
NJM2846_3.0V
Load Regulation vs. Output Current
0
NJM2846_3.0V
Peak Output Current vs. Input Voltage
2500
-10
Peak Output Current : IoMAX(mA)
Load Regulation : dVo/dIo(mV)
2000
-20
-30
-40
-50
-60
1500
1000
500
@:Ta=25 oC
VIN=4.0V
Co=2.2µF(Ceramic)
-70
o
@:Ta=25 C
Co=2.2µF(Ceramic)
-80
0
0
200
400
600
800
1000
4
6
NJM2846_3.0V
Quiescent Current v.s. Input Voltage
@:Ta=25oC
Output is open.
Co=2.2µF(Ceramic)
including Icont
Output Noise Voltage : Vn(µVrms)
Quiescent Current : IQ (µA)
1000
500
10
80
60
40
20
15
0.01
NJM2846_3.0V
Ripple Rejection Ratio v.s. Frequency
Io=0mA
100
1000
80
Ripple Rejection : RR (dB)
Ripple Rejection : RR (dB)
10
f=10kHz
90
Io=10mA
80
70
60
Io=30mA
Io=100mA
50
40
@:Ta=25 C
VIN=4.0V
ein=200mVrms
Co=2.2µF(Ceramic)
30
10
100
60
50
40
30
1k
Frequency : f (Hz)
10k
100k
f=1kHz
70
o
Ver.2008-02-06
1
NJM2846_3.0V
Ripple Rejection vs. Output Current
100
100
20
0.1
Output Current : Io(mA)
Input Voltage : VIN(V)
90
14
@:Ta=25 C
V IN=4.0V
LPF:80kHz
Co=2.2µF(ceramic)
0
0.001
0
5
12
o
1500
0
10
NJM2846_3.0V
Output Noise Voltage vs. Output Current
100
2500
2000
8
Input Voltage : VIN(V)
Output Current : Io(mA)
@:Ta=25oC
V IN=4.0V
ein=200mVrms
Co=2.2µF(Ceramic)
20
0.001
0.01
0.1
1
10
100
1000
Output Current : Io(mA)
- 13 -
NJM2845/46
TYPICAL CHARACTERISTICS (NJM2846)
NJM2846_3.0V
Equivalent Serise Resistance vs. Output Current
100
Equivalent Serise Resistance : ESR(Ω )
@:Ta=25oC
V IN=4.0V
Co=2.2µF
10
STABLE REGION
1
0.1
0.02
0.001
0.01
0.1
1
10
3
100
10
Output Current : Io(m A)
NJM2846_3.0V
Dropout Voltage vs. Output Current
0.4
Io=500mA
Co=2.2µF(Ceramic)
0.35
3.05
Output Voltage : Vo(V)
0.3
Dropout Voltage:dVI-O (V)
NJM2846_3.0V
Output Voltage vs. Temperature
3.1
0.25
0.2
0.15
0.1
3
2.95
@:VIN=4.0V
Io=30mA
Co=2.2µF(Ceramic)
0.05
2.9
0
-50
0
50
100
-50
150
0
NJM2846_3.0V
Control Voltage v.s. Temperature
150
NJM2846_3.0V
Control Current v.s. Temperature
10
2
@:V IN=4.0V
Io=30mA
Co=2.2µF(Ceramic)
@:VIN=4V
Output is open
Co=2.2µF(Ceramic)
V CONT=1.6V
8
1.5
Control Current : ICONT [ µA]
Control Voltage :Vcont-off [V]
100
Temperature : Ta ( C)
Temperature : Ta ( C)
1
0.5
6
4
2
0
-50
0
50
100
o
Temperature : Ta ( C)
- 14 -
50
o
o
150
0
-50
0
50
100
150
o
Temperature Ta ( C)
Ver.2008-02-06
NJM2845/46
TYPICAL CHARACTERISTICS (NJM2846)
NJM2846_3.0V
Quiescent Current v.s. Input Voltage
@:VIN=4.0V
Output is open.
Co=2.2µF(Ceramic)
500
@:VIN=4.0V
Co=2.2µF(Ceramic)
Output is short to ground.
800
Short Circuit Current : Isc (mA)
Quiescent Current : IQ (µ A)
NJM2846_3.0V
Short Circuit Current v.s. Temperature
1000
600
400
300
200
100
600
400
200
0
0
-50
0
50
100
-50
150
0
o
NJM2846_3.0V
Line Regulation vs. Temperature
0.1
50
100
150
Temperature : Ta (oC)
Temperature : Ta ( C)
NJM2846_3.0V
Load Regulation vs. Temperature
0.03
@:V IN=4.0V
Io=0-800mA
Co=2.2µF(Ceramic)
Load Regulation : dVo/dIo(%/mA)
Line Regulation : dVo/dIo(%/V)
0.025
0.05
0
-0.05
-0.1
@:VIN=4.0-9.0V
Io=30mA
Co=2.2µF(Ceramic)
-50
0
50
o
100
0.02
0.015
0.01
0.005
0
-50
150
0
Temperature : Ta ( C)
NJM2846_3.0V
Peak Output Current v.s. Temperature
2000
Peak Output Current: Io_peak (mA)
o
100
150
NJM2846_3.0V
Output Voltage vs. Temperature
4
@:VIN=4.0V
Co=2.2µF(Ceramic)
3.5
3
Output Voltage : Vo(V)
1500
1000
500
2.5
2
1.5
1
0.5
0
0
-50
0
50
100
o
Temperature : Ta ( C)
Ver.2008-02-06
50
Temperature : Ta ( C)
150
@:VIN=4.0V
Io=30mA
Co=2.2µF(Ceramic)
-50
0
50
100
150
200
Temperature : Ta (oC)
- 15 -
NJM2845/46
TYPICAL CHARACTERISTICS (NJM2846)
NJM2846_3.0V
ON/OFF Transient Response without Load
NJM2846_3.0V
ON/OFF Transient Response with Load
7
6
10
7
5
6
0
5
10
5
3
-10
2
-15
1
o
@:Ta=25 C
VIN=4.0V
Co=2.2µF(Ceramic)
Io=0mA
0
-1
0
1
2
3
Time : t [S]
4
Output Voltage
3
-10
2
-15
-20
1
-25
0
-30
-1
5
-5
4
-30
0
4
6
3.25
5
3.2
3.04
3
Output Voltage
3.02
2
3
1
o
0
@:Ta=25 C
VIN=4V
Co=2.2µF
Io=30mA
Output Voltage : Vo [V]
4
Input Voltage : VIN [V]
Output Voltage : Vo [V]
12
Time : t [mS]
16
20
800
Output Current
3.06
3.15
700
3.1
600
3.05
500
3
400
Output Voltage
2.95
300
o
2.94
40
8
900
Input Voltage
0
-25
NJM2846_3V
Load Transient Response
3.08
2.96
-20
o
@:Ta=25 C
VIN=4.0V
Co=2.2µF(Ceramic)
Io=30mA
NJM2846_3V
Line Transient Response
3.1
2.98
Control Voltage : Vo [V]
Output Voltage
0
Output Current : Io [mA]
Output Voltage : Vo [V]
-5
4
Output Voltage : Vo [V]
Control Voltage
Control Voltage : Vo [V]
Control Voltage
5
80
120
Time : t [µs]
160
-1
2.9
-2
200
2.85
@:Ta=25 C
VIN=4V
Co=2.2µF
0
40
80
120
Time : t [µs]
160
200
100
200
[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.
- 16 -
Ver.2008-02-06
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