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PDF NJW4181 Data sheet ( Hoja de datos )
| Número de pieza | NJW4181 | |
| Descripción | Regulator | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NJW4181 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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NJW4181
High Voltage Very low current consumption Io=100mA Regulator
GENERALDESCRIPTION
The NJW4181 is a high input voltage and low current consumption
100mA series regulator low current consumption Iq=9µA and small package.
It has two package lineup. SOT-89 is able to direct replace to
3-terminal 78L series. ESON6, tiny DFN package, corresponds to
a demand on miniaturization of sensor application and so on.
Due to the low current consumption of 9µA, the NJW4181 is suitable
for light load and continuously running applications such as power
management microprocessor, RTC, protection circuit, security system
and so on.
PACKAGE OUTLINE
NJW4181KG1 NJW4181U3
FEATURES
• Wide Operating Voltage Range
• Low Current Consumption
• Correspond to Low ESR capacitor (MLCC)
• Output Current
• High Precision Output
• Internal Thermal Overload Protection
• Internal Over Current Protection
• Internal Reverse Current Protection
• Package Outline
35V (max.)
9µA (typ.)
IO(min.)=100mA
VO ±1.0%
DFN6-G1(ESON6-G1), SOT-89-3
PRODUCT CLASSIFICATION
Device Name
NJW4181KG1-xxA
NJW4181U2-xxA
NJW4181KG1-xxB
NJW4181U3-xxB
Version
A
A
B
B
ON/OFF
Function
Yes
Yes
-
-
xx=Output Voltage ex) 33=3.3V 05=5.0V
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Package
DFN6-G1(ESON6-G1)
SOT-89-5
DFN6-G1(ESON6-G1)
SOT-89-3
Status
PLAN
PLAN
PIN CONFIGURATION
6 54
NJW4181
1 23
NJW4181KG1
1. N.C.
2. GND
3. N.C.
4. VIN
5. N.C.
6. VOUT
1. VOUT
2. GND
3. VIN
123
NJW4181U3
INPUT VOLTAGE RANGE
VO≤3V: VIN = +4.7V to +35V
3V<VO≤5V VIN = VO+1.7V to +35V
VO>5V: VIN = VO+2.0V to +35V
Ver.2013-04-15
-1-
datasheet pdf - http://www.DataSheet4U.net/
1 page  
NJW4181
TEST CIRCUIT
A IIN
VIN
VIN VOUT
NJW4181-B
0.1µF
GND
2.2µF
(ceramic)
VIOUT
VOUT
TYPICAL APPLICATION
VIN
0.1µF
VIN VOUT
NJW4181-B
GND
2.2µF
VOUT
*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.
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Therefore, use the recommended CIN value (refer to conditions of ELECTRIC CHARACTERISTIC) or larger and
should connect between GND and the VIN pin 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 the VOUT pin as shortest path as possible for stable operation
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.
*Reverse Current Protection
NJW4181 is built-in a Reverse Current Protection. This circuit restrains reverse current from the VO pin to the VIN pin
when the input voltage is less than the output voltage.
In case of the voltage rank 5.0V or below, reverse voltage differential between output and input should keep VIN+7V
or less, to prevent IC breaking due to huge reverse current.
And also, the absolute maximum ratings of the Vo pin (17V) should not be exceeded.
Ver.2013-04-15
-5-
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
NJW4181-33 TYPICAL CHARACTERISTICS
NJW4181_3.3V
Dropout Voltage vs. Output Current
3
2
1
@:Ta=25°C
Vin = 5.3V
Co = 2.2uF
Cin = 0.1uF
0
0 50 100 150 200
Output Current [mA]
NJW4181
300
250
200
150
100
50
0
0
NJW4181_3.3V
Peak Output Current vs. Input Voltage
@:Ta=25°C
Vin = 5.3V
Co = 2.2uF
Cin = 0.1uF
10 20 30
Input Voltage [V]
40
100
80
60
40
20
0
0
NJW4181_3.3V
Short Circuit Current vs. Input Voltage
@:Ta=25°C
Vin = 5.3V
Co = 2.2uF
Cin = 0.1uF
10 20 30
Input Voltage [V]
40
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100
90
80
70
60
50
40
30
20
10
0
10
NJW4181_3.3V
Ripple Rejection Ratio vs. Frequency
Io = 1uA
Io = 1mA
Io = 10mA
Io = 30mA
Io = 100mA
@:Ta=25°C
Vin = 6.3V
Cin = 0.1uF
Co = 2.2uF
100
1000
10000
Frequency [Hz]
100000
NJW4181_3.3V
Ripple Rejection Ratio vs. Output Current
100
75
50
25
0
0.001
0.01
@:Ta=25°C
Vin = 6.3V
Cin = 0.1uF
Co = 2.2uF
0.1 1 10
Output Current [mA]
100 1000
NJW4181_3.3V
Equlvalent Serise Resistance vs. Output Current
100
10
Stable Region
1
0.1
0.01
0.001
0.01
Cin = 0.1uF
Co = 2.2uF
0.1 1 10
Output Current [mA]
100
1000
Ver.2013-04-15
- 11 -
datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet NJW4181.PDF ] | |
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