NJU7747/48
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DISCRIPTION
NJU7747/48 is a low dropout voltage regulator with ON/OFF
control.
Advanced CMOS technology achieves ultra low quiescent current.
SC-82AB package and 0.1µF small output capacitor make the
NJU7747/48 suitable for space conscious applications.
NJU7748 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
=40mA, V
O
=3V version)
With ON/OFF Control
(Active High)
With Output Shunt Switch
Only NJU7748
Internal Short Circuit Current Limit
CMOS Technology
Package Outline
SC-82AB
PIN CONFIGURATION
4
3
PACKAGE OUTLINE
NJU7747/48F
1
2
PIN FUNCTION
1.CONTROL
2.GND
3. V
OUT
4. V
IN
NJU7747/48F4
EQUIVALENT CIRCUIT
V
IN
V
OUT
V
IN
V
OUT
CONTROL
Output
Control
CONTROL
Output
Control
Vref
Current
Limit
Vref
Current
Limit
GND
GND
NJU7747
NJU7748
Ver.2004-12-22
-1-
NJU7747/48
OUTPUT VOLTAGE RANK LIST (* : Under Development)
DEVICE NAME
V
OUT
DEVICE NAME
V
OUT
NJU774*F4-15
1.5V
NJU774*F4-28
2.8V
NJU774*F4-18
1.8V
NJU774*F4-03
3.0V
NJU774*F4-19
1.9V
NJU774*F4-33
3.3V
NJU774*F4-02
2.0V
(*) NJU774*F4-37
3.7V
NJU774*F4-25
2.5V
NJU774*F4-05
5.0V
NJU774*F4-27
2.7V
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
+10
V
Control Voltage
V
CONT
+10(*1)
V
Power Dissipation
P
D
250(*2)
mW
Operating Temperature
Topr
−40
∼
+85
°C
Storage Temperature
Tstg
−40
∼
+125
°C
Output Sink Current
10
mA
I
O
at OFF-state(*3)
(*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):
This maximum rating is applied to NJU7748.
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
Io=60mA
2.5V≤V
O
≤2.7V
2.8V≤V
O
≤3.3V
3.4V≤V
O
≤5.0V
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(*4)
∆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
±100
5
–
–
300
MAX.
+1.0%
6
3.5
1
–
–
0.30
0.15
0.60
0.29
0.27
0.26
0.24
–
10
V
IN
0.3
–
UNIT
V
V
µA
µA
mA
mA
%/V
%/mA
V
V
V
V
V
ppm/°C
MΩ
V
V
Ω
Dropout Voltage
∆V
I-O
(*4)
This electrical characteristics is applied to NJU7748.
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.2004-12-22
NJU7747/48
TEST CIRCUIT
A
V
IN
I
IN
V
IN
V
OUT
I
OUT
V
V
OUT
0.1
µ
F
0.1
µ
F
NJU7747/48
(Ceramic)
A
V
V
CONT
I
CONT
CONTROL
GND
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
NJU7747/48
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
NJU7747/48
CONTROL
GND
State of control terminal:
●
“H”
→
output is enabled.
●
“L” or “open”
→
output is disabled.
Ver.2004-12-22
-3-
NJU7747/48
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJU7747/48F4 Power Dissipation
(Topr=-40½+85℃,Tj=125℃)
500
Power Dissipation P
D
(mW)
400
300
On Board(114.3×76.2×1.6mm, FR-4)
200
100
0
-50
-25
0
25
50
75
100
Ambient Temperature Ta(℃)
[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.
-4-
Ver.2004-12-22
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