NJU7741/44
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DISCRIPTION
NJU7741/44 is a low dropout voltage regulator with ON/OFF
control and Output shunt switch.
Advanced CMOS technology achieves high ripple rejection and
ultra low quiescent current.
It is suitable for reset small micro controller and other logic chips.
NJU7744 features shunt switch which improves turn off response
of output voltage when ON/OFF control is used.
FEATURES
Ultra Low quiescent Current
Iq=1.5µA typ.(I
O
=0mA)
Output capacitor with 0.1uF ceramic capacitor
Output Current
I
O
(max.)=100mA
High Precision Output
V
O
±1.0%
Low Dropout Voltage
0.17V typ. (I
O
=60mA, V
O
=3V version)
With ON/OFF Control
(Active High)
With Output Shunt Switch
Only NJU7744
Internal Short Circuit Current Limit
CMOS Technology
Package Outline
SOT-23-5
PIN CONFIGURATION
5
4
PACKAGE OUTLINE
NJU7741/44F
1 2 3
PIN FUNCTION
1.CONTROL
2.GND
3.N.C.
4.V
OUT
5.V
IN
NJU7741/44F
EQUIVALENT CIRCUIT
V
IN
V
OUT
V
IN
V
OUT
CONTROL
Output
Control
CONTROL
Output
Control
Vref
Current
Limit
Vref
Current
Limit
GND
GND
NJU7741
NJU7744
Ver.2006-02-14
-1-
NJU7741/44
OUTPUT VOLTAGE RANK LIST
DEVICE NAME
V
OUT
DEVICE NAME
NJU774*F15
1.5V
NJU774*F28
NJU774*F18
1.8V
NJU774*F29
NJU774*F19
1.9V
NJU774*F03
NJU774*F02
2.0V
NJU774*F31
NJU774*F25
2.5V
NJU774*F33
NJU774*F27
2.7V
NJU774*F37
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
Control Voltage
V
CONT
Power Dissipation
P
D
V
OUT
2.8V
2.9V
3.0V
3.1V
3.3V
3.7V
DEVICE NAME
NJU774*F04
NJU774*F45
NJU774*F05
NJU774*F06
V
OUT
4.0V
4.5V
5.0V
6.0V
Operating Temperature
Topr
Storage Temperature
Tstg
Output Sink Current
10
mA
I
O
at OFF-state(*4)
(*1) : When input voltage is less than +10V, the absolute maximum control voltage is equal to the input voltage.
(*2) : Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers)
(*3) : Device itself
(*4) :
This maximum rating is applied to NJU7744.
ELECTRICAL CHARACTERISTICS (V
IN
=V
O
+1V, C
IN
=0.1µF, C
O
=0.1µF, Ta=25°C)
PARAMETER
Output Voltage
Input Voltage
Quiescent Current
Quiescent Current
at Control OFF
Output Current
Short Circuit Limit
Line Regulation
Load Regulation
SYMBOL
V
O
V
IN
I
Q
I
Q(OFF)
I
O
I
LIM
∆V
O
/∆V
IN
∆V
O
/∆V
O
I
O
=30mA
I
O
=0mA, V
CONT
=V
IN,
Except I
CONT
V
CONT
=0V
V
O
−0.3V
V
O
=0V
V
IN
= V
O
+1V∼V
O
+6.0V(V
O
<3.0V)
V
IN
= V
O
+1V∼9.0V(V
O
≥3.0V),
I
O
=30mA
Io=0∼100mA
1.5V≤V
O
≤2.0V
Io=40mA
2.0V≤V
O
≤2.4V
2.5V≤V
O
≤2.7V
Io=60mA
2.8V≤V
O
≤3.3V
3.4V≤V
O
≤5.0V
5.1V≤V
O
≤6.0V
Average Temperature
Coefficient of Output
Voltage
Pull-down Resistance
Control Voltage for ON-State
Control Voltage for OFF-State
Pull-down Resistance at
OFF-state(note 3)
∆V
O
/∆Ta
R
CONT
V
CONT(ON)
V
CONT(OFF)
R
O(OFF)
V
CONT
=0V (V
O
=3.0V Version)
Ta=0∼85°C, I
O
=10mA
TEST CONDITION
MIN.
−1.0%
–
–
–
100
–
–
–
–
–
–
–
–
–
–
2
1.6
0
–
TYP.
–
–
1.5
0.1
–
25
–
–
0.19
0.19
0.18
0.17
0.16
0.15
±100
5
–
–
300
MAX.
+1.0%
9
3.5
1
–
–
0.30
0.15
0.60
0.29
0.27
0.26
0.24
0.22
–
10
V
IN
0.3
–
UNIT
V
V
µA
µA
mA
mA
%/V
%/mA
V
V
V
V
V
V
ppm/°C
MΩ
V
V
Ω
(Ta=25°C)
RATINGS
UNIT
+10
V
+10(*1)
V
350(*2)
SOT-23-5
mW
200(*3)
−40
∼
+85
°C
−40
∼
+125
°C
Dropout Voltage
∆V
I-O
(*5)
This electrical characteristics is applied to NJU7744.
The above specification is a common specification for all voltages.
Therefore, it may be different from the individual specification for a specific output Voltage.
-2-
Ver.2006-02-14
NJU7741/44
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJU7741/44F Power Dissipation
(Topr=-40½+85℃,Tj=125℃,P
D
=200mW(Ta≦25℃))
500
Power Dissipation P
D
(mW)
400
On Board(114.3×76.2×1.6mm, FR-4)
300
Device itself
200
100
0
-50
-25
0
25
50
75
100
Ambient Temperature Ta(℃)
TEST CIRCUIT
A
V
IN
I
IN
V
IN
V
OUT
I
OUT
V
V
OUT
0.1
µ
F
0.1
µ
F
NJU7741/44
(Ceramic)
A
V
V
CONT
I
CONT
CONTROL
GND
Ver.2006-02-14
-3-
NJU7741/44
TYPICAL APPLICATION
1
In case that ON/OFF Control is not required:
V
IN
V
IN
C
IN
0.1
µ
F
V
OUT
V
OUT
C
O
0.1
µ
F
NJU7741/44
CONTROL
GND
Connect control terminal to V
IN
terminal.
2
In use of ON/OFF Control
V
IN
V
IN
C
IN
0.1
µ
F
V
OUT
V
OUT
C
O
0.1
µ
F
NJU7741/44
CONTROL
GND
State of control terminal:
●
“H”
→
output is enabled.
●
“L” or “open”
→
output is disabled.
-4-
Ver.2006-02-14
NJU7741/44
TYPICAL CHARACTERISTICS
NJU7741/44_3.0V
Output Voltage vs. Input Voltage
3.4
@:Ta=25 C
Co=0.1µF
(Ceramic)
o
4
NJU7741/44_3.0V
Output Voltage vs. Output Current
3.5
3.2
Io=0A
3
Output Voltage : Vo(V)
Output Voltage : Vo(V)
3
2.5
2
2.8
Io=40mA
2.6
Io=100mA
2.4
1.5
1
@:Ta=25 C
V
IN
=4.0V
Co=0.1µF
(Ceramic)
0
50
100
150
200
o
0.5
2.6
2.8
3
3.2
3.4
3.6
3.8
0
Input Voltage : V
IN
(V)
Output Current : Io(mA)
NJU7741/44_3.0V
Ground Pin Current v.s. Output Current
40
0.5
o
NJU7741/44_3.0V
Dropout Voltage vs. Output Current
@:Ta=25 C
Co=0.1µF
(Ceramic)
35
0.4
Ground Pin Current : I
GND
(µ A)
µ
30
25
Dropout Voltage:dV
I-O
(V)
@:Ta=25 C
V
IN
=4.0V
Co=0.1µF(Ceramic)
o
0.3
20
0.2
15
10
0.1
5
0
0
20
40
60
80
100
0
10
30
50
70
90
Output Current : I
O
(mA)
Output Current:Io(mA)
NJU7741/44_3.0V
Quiescent Current v.s. Input Voltage
16
@:Ta=25 C
Output is open.
Co=0.1µF
(Ceramic)
including Icont
o
14
12
Quiescent Current : I
Q
(µ A)
µ
10
8
6
4
2
0
0
2
4
6
8
10
Input Voltage : V
IN
(V)
Ver.2006-02-14
-5-
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