NJU7751/54
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DISCRIPTION
NJU7751/54 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.
PACKAGE OUTLINE
NJU7751/54F
FEATURES
Ultra Low quiescent Current
Iq=20µA typ.(I
O
=0mA)
Output capacitor with 1.0uF ceramic capacitor
Output Current
I
O
(max.)=100mA
High Precision Output
V
O
±1.0%
Low Dropout Voltage
0.15V typ. (I
O
=60mA, V
O
=3V)
With ON/OFF Control
(Active High)
With Output Shunt Switch
Internal Short Circuit Current Limit
CMOS Technology
Package Outline
SOT-23-5
PIN CONFIGURATION
PIN FUNCTION
5
4
1.CONTROL
2.GND
3.N.C.
4.V
OUT
1 2 3
5.V
IN
NJU7751/54F
EQUIVALENT CIRCUIT
V
IN
V
OUT
V
IN
V
OUT
CONTROL
Output
Control
CONTROL
Output
Control
Vref
Current
Limit
Vref
Current
Limit
GND
GND
NJU7751
OUTPUT VOLTAGE RANK LIST
DEVICE NAME
V
OUT
DEVICE NAME
NJU775*F15
1.5V
NJU775*F28
NJU775*F18
1.8V
NJU775*F03
NJU775*F32
NJU775*F21
2.1V
NJU775*F33
NJU775*F22
2.2V
NJU775*F24
NJU775*F05
2.4V
NJU775*F25
2.5V
NJU7754
V
OUT
2.8V
3.0V
3.2V
3.3V
5.0V
Ver.2006-02-23
-1-
NJU7751/54
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
Control Voltage
V
CONT
Power Dissipation
P
D
(Ta=25°C)
RATINGS
UNIT
+10
V
+10(*1)
V
350
(*2)
SOT-23-5
mW
200
(*3)
−40
∼
+85
°C
−40
∼
+125
°C
Operating Temperature
Topr
Storage Temperature
Tstg
Output Sink Current
I
O
10
mA
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 NJU7754.
Operating voltage
V
IN
=+2.3
∼
+9V (In case of Vo<2.1V version)
ELECTRICAL CHARACTERISTICS
(V
IN
=V
O
+1V, C
IN
=0.1µ F, C
O
=1.0µ F(Vo≤2.0V:Co=2.2µ F), Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
I
O
=30mA
Output Voltage
V
O
Input Voltage
V
IN
Quiescent Current
I
Q
I
O
=0mA, V
CONT
=V
IN,
Include I
CONT
Quiescent Current
V
CONT
=0V
I
Q(OFF)
at Control OFF
Output Current
I
O
V
O
−0.3V
Short Circuit Limit
I
LIM
V
O
=0V
V
IN
= V
O
+1V∼V
O
+6.0V(V
O
<3.0V)
Line Regulation
∆V
O
/∆V
IN
V
IN
= V
O
+1V∼9.0V(V
O
≥3.0V),
I
O
=30mA
Load Regulation
∆V
O
/∆V
O
Io=0∼100mA
2.1V≤V
O
≤2.4V
2.5V≤V
O
≤2.7V
Io=60mA
Dropout Voltage(*5)
∆V
I-O
2.8V≤V
O
≤3.3V
3.4V≤V
O
≤5.0V
Ripple Rejection
RR
ein=200mVrms,f=1kHz,Io=10mA,
Vo=3.0V Version
MIN.
−1.0%
–
–
–
100
–
–
–
–
–
–
–
−
TYP.
–
–
20
0.1
–
40
–
–
0.20
0.18
0.15
0.12
65
MAX.
+1.0%
9
40
1
–
–
0.20
0. 03
0.27
0.25
0.22
0.19
−
UNIT
V
V
µA
µA
mA
mA
%/V
%/mA
V
V
V
V
dB
Average Temperature
–
Coefficient of Output
∆V
O
/∆Ta
Ta=0∼85°C, I
O
=10mA
Voltage
V
NO
Output Noise Voltage
f=10Hz
∼
80kHz,Io=10mA,Vo=3.0V Version
−
Pull-down Resistance
R
CONT
2
Control Voltage for
1.6
V
CONT(ON)
ON-State
Control Voltage for
–
V
CONT(OFF)
OFF-State(*6)
Pull-down Resistance
V
CONT
=0V (V
O
=3.0V Version)
–
R
O(OFF)
at OFF-state
(*5): The output voltage excludes under 2.1V.
(*6): This electrical characteristics is applied to NJU7754.
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-
±100
75
–
−
ppm/°C
µVrms
5
–
–
150
10
–
0.3
–
MΩ
V
V
Ω
Ver.2006-02-23
NJU7751/54
TEST CIRCUIT
V
IN
I
IN
A
C
IN
0.1
µ
F
V
IN
V
OUT
NJU7751/54
I
CONT
A
C
O
*7
1.0
µ
F
(Ceramic)
I
OUT
V V
OUT
CONTROL
GND
V V
CONT
*7 : Vo
≤
2.0V version, Co=2.2µF(Ceramic)
TYPICAL APPLICATION
1
In case that ON/OFF Control is not required:
V
IN
V
IN
V
OUT
V
OUT
C
O
1.0
µ
F
*8
C
IN
0.1
µ
F
NJU7751/54
CONTROL
GND
*8 : Vo
≤
2.0V version, Co=2.2µF
Connect control terminal to V
IN
terminal.
2
In use of ON/OFF Control
V
IN
V
IN
V
OUT
V
OUT
C
O
*8
1.0µF
C
IN
0.1
µ
F
NJU7751/54
GND
CONTROL
*8 : Vo
≤
2.0V version, Co=2.2µF
State of control terminal:
●
“H”
→
output is enabled.
●
“L” or “open”
→
output is disabled.
Ver.2006-02-23
-3-
NJU7751/54
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJU7751/54F 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(℃)
-4-
Ver.2006-02-23
NJU7751/54
ELECTRICAL CHARACTERISTICS
NJU7751/54_3.0V
Output Voltage vs. Input Voltage
3.2
@:Ta=25 C
Co=1.0µF
(Ceramic)
C
IN
=0.1µF
(Ceramic)
3.1
o
3.5
NJU7751/54_3.0V
Output Voltage vs. Output Current
3
Output Voltage : Vo
(V)
2.5
3
Output Voltage : Vo(V)
Io=0A
2
2.9
Io=30mA
2.8
1.5
1
@:Ta=25
o
C
V
IN
=4.0V
Co=1.0µF
(Ceramic)
C
IN
=0.1µF
(Ceramic)
0.5
Io=100mA
2.7
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
0
0
50
100
150
200
250
Input Voltage : V
IN
(V)
Output Current : Io(mA)
NJU7751/54_3.0V
Ground Pin Current v.s. Output Current
100
@:Ta=25 C
V
IN
=4.0V
Co=1.0µF
(Ceramic)
C
IN
=0.1µF
(Ceramic)
o
0.4
o
NJU7751/54_3.0V
Dropout Voltage vs. Output Current
@:Ta=25 C
Co=1.0µF
(Ceramic)
0.35
80
Ground Pin Current : I
GND
(µ A)
µ
0.3
Dropout Voltage:dV
I-O
(V)
60
0.25
0.2
40
0.15
0.1
20
0.05
0
0
50
100
150
0
0
50
100
150
Output Current : I
O
(mA)
Output Current:Io(mA)
6
NJU7751/54_3.0V
Output Voltage vs. Control Voltage
0
NJU7751/54_3.0V
Load Regulation vs. Output Current
5
-5
4
Load Regulation : dVo/dIo(mV)
Output Voltage : Vo(V)
-10
3
-15
2
@:Ta=25
o
C
V
IN
=4.0V
Co=1.0µF
(Ceramic)
C
IN
=0.1µF
(Ceramic)
Io=30mA
-20
1
-25
@:Ta=25 C
V
IN
=4.0V
Co=1.0µF
(Ceramic)
C
IN
=0.1µF
(Ceramic)
0
50
100
150
o
0
0
0.5
1
1.5
2
2.5
3
3.5
4
-30
Control Voltage : Vcont(V)
Output Current : Io(mA)
Ver.2006-02-23
-5-
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