NJW4188
High Voltage Io=1000mA Adjustable Low Dropout Regulator
GENERAL DESCRIPTION
The NJW4188 is a high voltage and low current consumption
low dropout
regulator.
NJW4188 is an adjustable output voltage type, so it can provide
the optimum selection for various applications.
NJW4188 is mounted to TO-252-5 package and corresponded
to Low ESR capacitor (MLCC).
The wide input range and wide operate temperature make NJW4188
suitable for a, Car accessory, Industrial supplies demanded high reliability.
PACKAGE OUTLINE
NJW4188DL3
FEATURES
Operating Voltage Range
Low Current Consumption
Correspond to Low ESR capacitor (MLCC)
Output Current
Available Output Voltage Range
High Precision Reference Voltage
ON/OFF Control
Internal Thermal Overload Protection
Internal Over Current Protection
Package Outline
PIN CONFIGURATION
3
4.0V to 40V
55μA typ.
I
O
(min.)=1000mA
2.0V to 15.0V
V
ref
1.0%
TO-252-5
12345
Pin Function
1. V
IN
2. CONTROL
3. GND
4. V
ADJ
5. V
OUT
NJW4188DL3
BLOCK DIAGRAM
V
IN
Current
Limit
V
ADJ
Bandgap
Reference
Thermal
Protection
GND
V
OUT
CONTROL
Ver.2015-06-25
-1-
NJW4188
■
PRODUCTS CLASSFICATION
Device Name
Spec
NJW4188DL3
General Spec
NJW4188DL3-T1
T1 Spec
Spec Guarantee
25
C
-40
C
~+125
C
This datasheet is applied to “NJW4188DL3”.
Please refer to each datasheet for other version.
Operating Temperature
-40
C
~+125
C
-40
C
~+125
C
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYNBOL
Input Voltage
V
IN
Control Voltage
V
CONT
Output Adjustable Voltage
V
ADJ
Output Voltage
V
OUT
Power Dissipation
Junction Temperature
Operating Temperature
Storage Temperature
P
D
Tj
Topr
Tstg
RATINGS
-0.3 to +45
-0.3 to +45
-0.3 to +6
-0.3~ V
IN
17
1190 (*1)
3125 (*2)
-40 to +150
-40 to +125
-40 to +150
(Ta=25 C)
UNIT
V
V
V
V
mW
C
C
C
2
(*1): Mounted on glass epoxy board. (76.2 114.3 1.6mm:based on EIA/JDEC standard size, 2Layers, Cu area 100mm )
(*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 RANGE
V
IN
=4.0V to 40V
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted,
V
O
3V :V
IN
=V
O
+1V,C
IN
=1.0μF,C
O
=4.7μF(3V V
O
<3.4V:10µF),R1=500k ,Ta=25 C
V
O
<3V: V
IN
=4.0V,C
IN
=1.0μF,C
O
=10μF,R1=500k ,Ta=25 C
PARAMETER
Reference Voltage
Quiescent Current
Quiescent Current
at Control OFF
Output Current
Line Regulation
Load Regulation
Ripple Rejection
Dropout Voltage
Average Temperature
Coefficient of Output
Voltage
Control Current
Control Voltage
for ON-state
Control Voltage
for OFF-state
SYMBOL
V
ref
I
Q
I
Q(OFF)
I
O
∆V
O
/
∆V
IN
∆V
O
/
∆I
O
RR
∆V
IO
∆V
O
/
∆T
a
I
CONT
V
CONT(ON)
V
CONT(OFF)
TEST CONDITION
I
O
= 0mA,
except I
CONT
V
CONT
= 0V
V
O
0.9
V
IN
= V
O
+1V to 40V, I
O
=200mA(V
O
3V)
V
IN
= 4V to 40V, I
O
=200mA(V
O
3V)
I
O
= 0 to 1000mA
ein=200mVrms, f=1kHz, I
O
=10mA,
V
O
=3.3V
I
O
=600mA
T
a
= 0
C
to 85°C, I
O
= 200mA
V
CONT
=1.6V
MIN.
-1.0%
-
-
1000
-
-
-
-
-
-
1.6
-
TYP.
1.29
55
-
-
-
-
MAX.
+1.0%
90
1
-
UNIT
V
µA
µA
mA
%/V
% / mA
dB
V
ppm/°C
µA
V
V
0.03
0.004
-
58
0.27
50
1
-
-
0.42
-
3
-
0.6
Available Output
V
O
Voltage Range
* These parameters are tested by Pulse Measurement.
-2-
2.0
-
15
V
Ver.2015-06-25
NJW4188
THERMAL CHARACTERISTICS
PARAMETER
SYMBOL
Junction-to-
ja
Ambient Temperature
Junction-to-Case surface
jt
THERMAL RESISTANCE
105 (*3)
40 (*4)
17 (*3)
12 (*4)
UNIT
C/W
C/W
2
(*3): Mounted on glass epoxy board. (76.2 114.3 1.6mm:based on EIA/JDEC standard size, 2Layers, Cu area 100mm )
(*4): 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)
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJW4188DL3 PowerDissipation
(Topr=-40~+125°C,Tj=150°C)
3500
3000
Power Dissipation P
D
(mW)
on 4 layers board
2500
2000
1500
1000
500
0
-50
-25
0
25
50
75
100
125
150
on 2 layers board
Temperature : Ta(°C)
TEST CIRCUIT
A
V
IN
I
IN
V
IN
V
OUT
1.0 F
NJW4188
R2
4.7 F
*4
I
OUT
V
V
OUT
(ceramic)
A
V
V
CONT
I
CONT
CONTROL
V
ADJ
(*4)Vo<3.4V:Co=10uF
GND
R1=500k
Ver.2015-06-25
-3-
NJW4188
TYPICAL APPLICATION
In the case where ON/OFF Control is not required
V
IN
1.0 F
V
IN
V
OUT
V
OUT
4.7 F
R2
*5
NJW4188
R
CONTROL
V
ADJ
(*5)Vo<3.4V:Co=10uF
GND
R1:Recommend 5k ~ 500k
R1
Vo=
R
2 1
R
1
Vref
Connect control pin to V
IN
pin
In use of ON/OFF CONTROL
V
IN
V
IN
V
OUT
V
OUT
4.7 F
*6
1.0 F
R
NJW4188
R2
CONTROL
V
ADJ
(*6)Vo<3.4V:Co=10uF
GND
R1:Recommend 5k ~ 500k
R1
V
O
=
R
2 1
R
1
Vref
State of control pin:
“H” output is enabled.
“L” or “open” output is disabled.
*In the case of using a resistance "R" between V
IN
and control.
If this resistor is inserted, it can reduce the control current when the control voltage is high.
The applied voltage to control pin should set to consider voltage drop through the resistor “R” and the minimum
control voltage for ON-state.
The V
CONT (ON)
and I
CONT
have temperature dependence as shown in the "Control Current vs. Temperature" and "
Control Voltage vs. Temperature" characteristics. Therefore, the resistance "R" should be selected to consider the
temperature characteristics.
-4-
Ver.2015-06-25
NJW4188
*Feed back Resistance R1
The output voltage may rise against the set point by the leak current from the V
OUT
pin at high temperature when this
resistance is set too big.
Conversely, the current flowing to R1 grows big when R1 is set too small, and make the consumption current
increase.
From the above, recommend 5k to 500k as a set range of R1.
But, the output noise voltage tends to increase with the resistance value of R1 become small.
Especially, In the case of low output voltage setting such as V
OUT
=2.0V, there is the possibility that the output voltage
becomes unstable in the condition of recommended output capacitor (Co=10
µ
F) and too small feedback resistor (R1).
In that case, It can improve by making Co or R1 bigger.
Show a characteristic example when changed a condition at the time of the Vo=2.0V / 5.0V setting for reference.
NJW4188_2.0V
500
Output Noise Voltage [μVrms]
Output Noise Voltage vs Output Current
Ta=25ºC
V
IN
=4.0V
R1=5k
Co=10uF
Solid Line : LPF80kHz
Dotted Line : FLAT
NJW4188_2.0V
500
Output Noise Voltage [μVrms]
Output Noise Voltage vs Output Current
Ta=25ºC
V
IN
=4.0V
R1=5k
Co=22uF
Solid Line : LPF80kHz
Dotted Line : FLAT
450
400
350
300
250
200
150
100
50
450
400
350
300
250
200
150
100
50
0
0.001
0.01
0.1
1
10
Output Current [mA]
100
1000
0
0.001
0.01
0.1
1
10
Output Current [mA]
100
1000
V
OUT
=2.0VSetting (R1=5k , Co=10
μ
F / Co=22
μ
F)
NJW4188_2.0V
500
Output Noise Voltage [μVrms]
Output Noise Voltage vs Output Current
Ta=25ºC
V
IN
=4.0V
R1=50k
Co=10uF
Solid Line : LPF80kHz
Dotted Line : FLAT
NJW4188_2.0V
500
Output Noise Voltage [μVrms]
Output Noise Voltage vs Output Current
Ta=25ºC
V
IN
=4.0V
R1=500k
Co=10uF
Solid Line : LPF80kHz
Dotted Line : FLAT
450
400
350
300
250
200
150
100
50
450
400
350
300
250
200
150
100
50
0
0.001
0.01
0.1
1
10
Output Current [mA]
100
1000
0
0.001
0.01
0.1
1
10
Output Current [mA]
100
1000
V
OUT
=2.0VSetting (R1=50k / 500k , Co=10
μ
F)
Ver.2015-06-25
-5-
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