NJM2855DL1-32 [NJRC]
LOW DROPOUT VOLTAGE REGULATOR; 低压差稳压器
| 型号： | NJM2855DL1-32 |
| 厂家： | 
NEW JAPAN RADIO |
| 描述： | LOW DROPOUT VOLTAGE REGULATOR |
| 文件： | 总9页 (文件大小：226K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NJM2855
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
PACKAGE OUTLINE
The NJM2855 is a 3-terminal low dropout voltage regulator.
Advanced Bipolar technology achieves low noise, high ripple
rejection.
It delivers up to 5V/1A output power with the maximum input
voltage of 10V.
NJM2855DL1
The NJM2855 is suitable for various applications such as
portable / consumer devices.
FEATURES
z High Ripple Rejection
z Output Noise Voltage
75dB typ. (f=1kHz,Vo=3V Version)
Vno=45µVrms typ.
z Output capacitor with 2.2µF ceramic capacitor (Vo≥2.7V)
z Output Current
Io (max.)=1A
z High Precision Output
z Low Dropout Voltage
Vo±1.0%
0.20V typ. (Io=600mA)
z Internal Short Circuit Current Limit
z Internal Thermal Overload Protection
z Bipolar Technology
z Package Outline
TO-252-3
PIN CONFIGURATION
2
PIN FUNCTION
1.VIN
2.GND
3.VOUT
1
3
NJM2855DL1
EQUIVALENT CIRCUIT
V IN
VOUT
Thermal
Protection
Bandgap
Reference
GND
Ver.2012-10-24
1
NJM2855
OUTPUT VOLTAGE RANK LIST
The WHITE column shows applicable Voltage Rank(s)
Device Name
Vout
Device Name
Vout
NJM2855DL1-15
NJM2855DL1-16
NJM2855DL1-17
NJM2855DL1-18
NJM2855DL1-19
NJM2855DL1-02
NJM2855DL1-21
NJM2855DL1-22
NJM2855DL1-23
NJM2855DL1-24
NJM2855DL1-25
NJM2855DL1-26
NJM2855DL1-27
NJM2855DL1-28
NJM2855DL1-29
NJM2855DL1-03
NJM2855DL1-31
NJM2855DL1-32
NJM2855DL1-33
NJM2855DL1-34
1.5V
1.6V
1.7V
1.8V
1.9V
2.0V
2.1V
2.2V
2.3V
2.4V
2.5V
2.6V
2.7V
2.8V
2.9V
3.0V
3.1V
3.2V
3.3V
3.4V
NJM2855DL1-35
NJM2855DL1-36
NJM2855DL1-37
NJM2855DL1-38
NJM2855DL1-39
NJM2855DL1-04
NJM2855DL1-41
NJM2855DL1-42
NJM2855DL1-43
NJM2855DL1-44
NJM2855DL1-45
NJM2855DL1-46
NJM2855DL1-47
NJM2855DL1-48
NJM2855DL1-49
NJM2855DL1-05
3.5V
3.6V
3.7V
3.8V
3.9V
4.0V
4.1V
4.2V
4.3V
4.4V
4.5V
4.6V
4.7V
4.8V
4.9V
5.0V
Ver.2012-10-24
2
NJM2855
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
UNIT
V
PARAMETER
Input Voltage
SYMBOL
VIN
RATINGS
+10
1190(*1)
3125(*2)
-40 ∼ +85
-40 ∼ +150
Power Dissipation
PD
mW
Operating Temperature
Storage Temperature
Topr
Tstg
°C
°C
(*1): Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JDEC standard size, 2Layers, Cu area 100mm2)
(*2): Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JDEC standard, 4Layers)
(For 4Layers: Applying 74.2×74.2mm inner Cu area and a thermal via hole to a board based on JEDEC standard JESD51-5)
OPERATING VOLTAGE
VIN=+2.5V ~ +8V (In case of Vo<2.3V version)
ELECTRICAL CHARACTERISTICS
(VIN=Vo+1V, CIN=0.33µF, Co=2.2µF(1.7V<Vo≤2.6V:4.7µF, Vo≤1.7V:10µF), Ta=25°C)
PARAMETER
Output Voltage
Quiescent Current
Output Current
SYMBOL
TEST CONDITION
Io=30mA
Io=0mA
MIN. TYP. MAX. UNIT
Vo
IQ
Io
-1.0%
-
-
+1.0%
600
-
V
µA
mA
400
Vo-0.3V
1000 1300
VIN=Vo+1V~Vo+6V(Vo≤2V),
VIN=Vo+1V~8V(Vo>2V),
Io=30mA
Line Regulation
-
-
0.10
%/V
∆Vo/∆VIN
Load Regulation
Dropout Voltage(*3)
-
-
-
0.004 %/mA
∆Vo/∆Io Io=0 ∼ 1A
Io=600mA
0.20
0.28
V
∆VI−O
ein=200mVrms,f=1kHz, Io=10mA
Vo=3.0V Version(*4)
Ripple Rejection
RR
-
-
75
-
dB
Average Temperature
Coefficient of Output Voltage
-
∆Vo/∆Ta Ta=0∼85°C, Io=10mA
±50
ppm/°C
f=10Hz∼80kHz, Io=10mA,
VNO
Output Noise Voltage
Input Voltage
-
-
45
-
-
µVrms
V
Vo=3.0V Version(*3)
VIN
8
(*3): The output voltage excludes under 2.1V.
(*4): Vo>2.0V : VIN=Vo+1V, Vo≤2.0V : VIN=3.0V
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.
Ver.2012-10-24
3
NJM2855
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJM2855DL1 PowerDissipation
(Topr=-40~+85°C,Tj=150°C)
3500
3000
2500
2000
1500
1000
500
on 4 layers board
on 2 layers board
0
-50
-25
0
25
50
75
100
Temperature : Ta(°C)
TEST CIRCUIT
IIN
A
VIN
VOUT
IOUT
VOU
V
VIN
2.2µF *5
NJM2855
0.33µF
(ceramic)
GND
*5 1.7V<Vo≤2.6V version: Co=4.7µF(ceramic)
Vo≤1.7V version: Co=10µF(ceramic)
TYPICAL APPLICATION
VIN
VOUT
VIN
VOUT
2.2µF *6
NJM2855
0.33µF
GND
*6 1.7V<Vo≤2.6V version: Co=4.7µF
Vo≤1.7V version: Co=10µF
Ver.2012-10-24
4
NJM2855
*Input Capacitor CIN
Input Capacitor CIN is required to prevent oscillation and reduce power supply ripple for applications
when high power supply impedance or a long power supply line.
Therefore, use the recommended CIN value (refer to conditions of ELECTRIC CHARACTERISTIC) or
larger and should connect between GND and VIN as shortest path as possible to avoid the problem.
*Output Capacitor CO
Output capacitor (CO) will be required for a phase compensation of the internal error amplifier.
The capacitance and the equivalent series resistance (ESR) influence to stable operation of the regulator.
Use of a smaller CO may cause excess output noise or oscillation of the regulator due to lack of the
phase compensation.
On the other hand, Use of a larger CO reduces output noise and ripple output, and also improves output
transient response when rapid load change.
Therefore, use the recommended CO value (refer to conditions of ELECTRIC CHARACTERISTIC) or
larger and should connect between GND and VOUT as shortest path as possible for stable operation
The recommended capacitance depends on the output voltage rank. Especially, low voltage regulator
requires larger CO value.
In addition, you should consider varied characteristics of capacitor (a frequency characteristic, a
temperature characteristic, a DC bias characteristic and so on) and unevenness peculiar to a capacitor
supplier enough.
When selecting CO, recommend that have withstand voltage margin against output voltage and superior
temperature characteristic though this product is designed stability works with wide range ESR of capacitor
including low ESR products.
Ver.2012-10-24
5
NJM2855
TYPICAL CHARACTERISTICS
NJM2855_3.0V
Output Voltage vs. Input Voltage
NJM2855_3.0V
Output Voltage vs. Output Current
3.3
3.2
3.1
3
4
3.5
3
@:Ta=25oC
Co=2.2µF(Ceramic)
2.5
2
Io=100mA
Io=0A
1.5
1
2.9
2.8
2.7
@:Ta=25oC
VIN=4V
Co=2.2µF(Ceramic)
0.5
0
Io=1A
Io=500mA
3.1
2.7
2.8
2.9
3
3.2
3.3
0
500
1000
1500 2000
Output Current : Io(mA)
Input Voltage : VIN(V)
NJM2855_3.0V
NJM2855_3.0V
Dropout Voltage vs. Output Current
@:Ta=25oC
Ground Pin Current vs. Output Current
0.4
0.35
0.3
35
30
25
20
15
10
5
Co=2.2µF(Ceramic)
0.25
0.2
0.15
0.1
@:Ta=25oC
VIN=4.0V
Co=2.2µF(Ceramic)
0.05
0
0
0
200
400
600
800
1000
1200
1400
0
200
400
600
800
1000
1200
Output Current : IO(mA)
Output Current:Io(mA)
NJM2855_3.0V
Peak Output Current vs. Input Voltage
NJM2855_3.0V
Load Regulation vs. Output Current
2500
2000
1500
1000
500
0
-10
-20
-30
-40
-50
-60
-70
-80
@:Ta=25oC
VIN=4.0V
Co=2.2µF(Ceramic)
@:Ta=25oC
Co=2.2µF(Ceramic)
0
4
5
6
7
8
0
200
400
600
800
1000
1200
1400
Output Current : Io(mA)
Input Voltage : VIN(V)
Ver.2012-10-24
6
NJM2855
TYPICAL CHARACTERISTICS
NJM2855_3.0V
Output Noise Voltage vs. Output Current
NJM2855_3.0V
Quiescent Current vs. Input Voltage
100
80
60
40
20
0
6000
5000
4000
3000
2000
1000
0
@:Ta=25oC
Output is open.
Co=2.2µF(Ceramic)
@:Ta=25oC
VIN=4.0V
LPF:80kHz
Co=2.2µF(ceramic)
0
1
2
3
4
5
6
7
8
0.001
0.01
0.1
1
10
100
1000
Input Voltage : VIN(V)
Output Current : Io(mA)
NJM2855_3.0V
Ripple Rejection vs. Output Current
NJM2855_3.0V
Ripple Rejection Ratio vs. Frequency
100
90
80
70
60
50
40
30
20
100
Io=10mA
Io=0mA
f=1kHz
90
80
70
60
50
40
30
20
f=10kHz
Io=30mA
Io=100mA
@: Ta=25oC
@:Ta=25oC
VIN=4V
ein=200mVrms
VIN=4V
ein=200mVrms
Co=2.2µF(Ceramic)
Co=2.2µF(Ceramic)
0.001
0.01
0.1
1
10
100
1000
10
100
1k
10k
100
Frequency : f (Hz)
Output Current : Io(mA)
NJM2855_3.0V
Equivalent Serise Resistance vs. Output Current
100
10
VIN=4V
1
STABLE REGION
0.1
0.02
@:Ta=25oC
Co=2.2µF(Ceramic)
VIN=4V
0.001
0.01
0.1
1
10
100
103
Output Current : Io(mA)
Ver.2012-10-24
7
NJM2855
TYPICAL CHARACTERISTICS
NJM2855_3.0V
Dropout Voltage vs. Temperature
NJM2855_3.0V
Output Voltage vs. Temperature
0.4
0.35
0.3
3.1
3.05
3
Io=600mA
Co=2.2µF(Ceramic)
0.25
0.2
0.15
0.1
2.95
2.9
0.05
0
@:VIN=4.0V
Io=30mA
Co=2.2µF(Ceramic)
-50
0
50
100
150
-50
0
50
100
150
Temperature : Ta ( oC)
Temperature : Ta ( oC)
NJM2855_3.0V
Quiescent Current v.s. Input Voltage
NJM2855_3.0V
Short Circuit Current v.s. Temperature
600
500
400
300
200
100
0
1000
800
600
400
200
0
@:VIN=4.0V
Output is open.
@:VIN=4.0V
Co=2.2µF(Ceramic)
Output is short to ground.
Co=2.2µF(Ceramic)
-50
0
50
100
150
-50
0
50
100
150
Temperature : Ta ( oC)
Temperature : Ta ( oC)
NJM2855_3.0V
NJM2855_3.0V
Line Regulation vs. Temperature
Load Regulation vs. Temperature
0.1
0.05
0
0.03
@:VIN=4.0V
Io=0-1000mA
Co=2.2µF(Ceramic)
0.025
0.02
0.015
0.01
0.005
0
-0.05
-0.1
@:VIN=4.0-8.0V
Io=30mA
Co=2.2µF(Ceramic)
-50
0
50
Temperature : Ta ( oC)
100
150
-50
0
50
100
150
Temperature : Ta ( oC)
Ver.2012-10-24
8
NJM2855
TYPICAL CHARACTERISTICS
NJM2855_3.0V
Output Voltage vs. Temperature
4
3.5
3
2.5
2
1.5
1
0.5
0
@:VIN=4.0V
Io=30mA
Co=2.2µF(Ceramic)
-50
0
50
100
150
200
Temperature : Ta ( oC)
NJM2855_3V
Line Transient Response
NJM2855_3V
Load Transient Response
3.1
3.08
3.06
3.04
3.02
3
6
3.25
3.2
1100
1000
900
800
700
600
500
Output Current
5
Input Voltage
4
3.15
3.1
3
2
3.05
3
Output Voltage
Output Voltage
1
2.98
2.96
2.94
0
2.95
2.9
@:Ta=25oC
VIN=4V
Co=2.2µF
Io=30mA
@:Ta=25oC
VIN=4V
Co=2.2µF
-1
-2
400
2.85
300
0
40
80
120
160
200
0
40
80
120
160
200
Time : t [µs]
Time : t [µs]
[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.
Ver.2012-10-24
9
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