NJM2386/88
LOW DROPOUT VOLTAGE REGULATOR WITH ON/OFF CONTROL
!
GENERAL DESCRIPTION
The NJM2388 is low dropout voltage regulator with ON/OFF control.
The output current is up to 1.0A and dropout voltage is 0.2V typ. at
Io=0.5A.
The NJM2388 is suitable for power module, TV, Display, car stereo
and low power applications.
!
PACKAGE OUTLINE
NJM2386DL2
!
FEATURE
"
Low Dropout Voltage
0.2V typ. at Io=0.5A
"
Output Current
Io(max.)=1.0A
"
ON/OFF Control
(Active High)
"
Internal Short Circuit Current Limit
"
Internal Thermal Overload Protection
"
Bipolar Technology
"
Package Outline
TO-252-5(NJM2386), TO-220F-4(NJM2388)
NJM2388F
!
PIN CONFIGURATION
3
123 45
PIN FUNCTION
1. V
IN
2. ON/OFF CONTROL
3. V
OUT
4. N.C.
5. GND
PIN FUNCTION
1. V
IN
2. V
OUT
3. GND
4. ON/OFF CONTROL
123 4
NJM2386DL2
NJM2388F
!
EQUIVALENT CIRCUIT
V
IN
V
OUT
Bandgap
Reference
Cont
ON/OFF
control
Over Voltage
Protection
Thermal
Protection
Over Current
Protection
GND
Ver.2004-06-21
-1-
NJM2386/88
!
OUTPUT VOLTAGE RANK LIST
Device Name
V
OUT
NJM2386DL2-33
3.3V
NJM2386DL2-05
5.0V
NJM2386DL2-63
6.3V
NJM2386DL2-08
8.0V
NJM2386DL2-09
9.0V
NJM2386DL2-12
12.0V
Device Name
NJM2388F33
NJM2388F05
NJM2388F63
NJM2388F08
NJM2388F84
NJM2388F09
NJM2388F12
V
OUT
3.3V
5.0V
6.3V
8.0V
8.4V
9.0V
12.0V
!
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Input Voltage
Control Voltage
Output Current
(Ta=25°C)
SYMBOL
RATINGS
UNIT
V
IN
+35
V
V
CONT
+35(*1)
V
Io
1.0
A
NJM2386
10(Tc≤25°C) / 1(Ta≤25°C)
W
Power Dissipation
P
D
NJM2388
18(Tc<50°C)
Operating Junction Temperature Range
Tj
-40
∼
+150
°C
Operating Temperature Range
Topr
-40
∼
+85
°C
Storage Temperature Range
Tstg
-50
∼
+150
°C
(*1): When input voltage is less than +35V, the absolute maximum control voltage is equal to the input voltage.
!
ELECTRICAL CHARACTERISTICS (V
IN
=V
O
+1V, Io=0.5A, C
IN
=0.33µF, Co=22µF, Ta=25°C)
Measurement is to be conducted is pulse testing.
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Output Voltage
Vo
V
IN
=V
O
+1V
-2%
-
+2%
V
Line Regulation
-
0.04
0.16
%/V
∆Vo-V
IN
V
IN
=V
O
+1V
∼
V
O
+17V
Load Regulation
-
0.2
1.4
%/A
∆Vo-Io
V
IN
=V
O
+2V,Io=0A
∼1.0A
Average Temperature
-
-
∆Vo/∆T
Tj=0
∼
+125°C
±
0.02
%/°C
Coefficient of Output Voltage
Quiescent Current
I
Q
Io=0A
-
-
5
mA
Dropout Voltage
Io=0.5A
-
0.2
0.5
V
∆V
I-O
NJM238**33
54
67
-
NJM238**05
54
67
-
NJM238**63
54
67
-
Ripple Rejection NJM238**08
V
IN
=V
O
+2V,
52
65
-
RR
dB
ein=0.5Vrms
,
f=120Hz
NJM238**84
52
65
-
NJM238**09
52
65
-
NJM238**12
50
63
-
ON Control Voltage
V
CONT(ON)
2.0(*2)
-
-
V
OFF Control Voltage
V
CONT(OFF)
-
-
0.4
V
ON Control Current
-
-
20
I
CONT(ON)
V
C
=2.7V
µA
OFF Control Current
-
-
-20
I
CONT(OFF)
V
C
=0.4V
µA
(*2): When ON/OFF CONTROL Terminal is open, Output Voltage is ON.
-2-
Ver.2004-06-21
NJM2386/88
!
THERMAL CHARACTERISTICS
NJM2386
(TO-252-5)
NJM2388
(TO-220F-4)
Thermal Resistance
Junction-to-Ambient Temperature
Junction to case
θja
θjc
125
12.5
60
5
°C/W
!
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJM2386DL2
(Topr=-40~+85°C,Tj=~+150°C,P
D
=10W(T
C
≤25°C),P
D
=1W(Ta≤25°C))
12
Power Dissipation PD(W)
10
8
6
4
2
0
-50
θ
HS
=5°C/W
θ
HS
=10°C/W
θ
HS
=20°C/W
Infinuit Heat Sink
Without Heat Sink
-25
0
25
50
75
100
Ambient Temperature Ta(°C)
NJM2388F
20
(Topr=-40~+85°C,Tj=~+150°C,P
D
=18W(T
C
<50°C))
Power Dissipation PD(W)
18
16
14
12
10
8
6
4
2
0
-50
-25
0
25
50
75
100
Without Heat Sink
Infinuit Heat Sink
Ambient Temperature Ta(°C)
!
TEST CIRCUIT
V
IN
V
OUT
NJM2386/88
GND
Control
+
A
I
C
V
C
22µF
Io
V
IN
0.33µF
+
I
Q
A
A
V
Vo
R
L
Ver.2004-06-21
-3-
NJM2386/88
!
TYPICAL APPLICATION
1
In the case where ON/OFF Control is not required:
V
IN
V
IN
V
OUT
V
OUT
+
0.33µ F
NJM2386 / 88
+
22µ F
CONTROL
GND
Connect control terminal to V
IN
terminal or open.
2
In use of ON/OFF CONTROL:
V
IN
V
IN
V
OUT
V
OUT
+
0.33µ F
NJM2386 / 88
+
22µ F
R
C
CONTROL
GND
State of control terminal:
•“H”
or “open”
→
output is enabled.
•“L” →
output is disabled.
-4-
Ver.2004-06-21
NJM2386/88
!
TYPICAL CHARACTERISTICS
NJM2386/88_5.0V
Output Voltage vs. Input Voltage
6
@:Ta=25 C
Co=22uF
o
6
NJM2386/88_5.0V
Output Voltage vs. Output Current
6
5
5.5
5
Output Voltage : Vo(V)
Output Voltage : Vo(V)
4
V
IN
=Vo+1
3
4
5
3
4.5
Io=0A
2
V
IN
=Vo+12
V
IN
=35V
2
Io=0.5A
Io=1A
4
4
4.5
5
5.5
6
1
@:Ta=25 C
Co=22uF
0
0
0.5
500
1
1000
1.5
1500
2
2000
o
1
0
2.5
2500
Input Voltage : V
IN
(V)
Output Current : Io(A)
30
NJM2386/88_5.0V
Ground Pin Current vs. Output Current
@:Ta=25 C
V
IN
=6V
Co=22uF
o
1
NJM2386/88_5.0V
Dropout Voltage vs. Output Current
@:Ta=25
o
C
Co=22uF
25
0.8
Ground Pin Current : I
GND
(mA)
20
Dropout Voltage:dV
I-O
(V)
0.6
15
0.4
10
5
0.2
0
0
0.5
1
1.5
0
0
0.5
1
1.5
Output Current : I
O
(A)
Output Current:Io(A)
0
NJM2386/88_5.0V
Control Current vs. Control Voltage
6
NJM2386/88_5.0V
Output Voltage vs. Control Voltage
@:Ta=25 C
V
IN
=6V
Co=22uF
Io=0.5A
o
5
-0.5
Rc=0Ω, 50kΩ, 100kΩ
(uA)
Control Current : I
Output Voltage : Vo(V)
Cont
4
-1
3
2
Rc=0Ω
Rc=50Ω
Rc=100kΩ
-1.5
@:Ta=25 C
V
IN
=6V
Co=22uF
Io=0.5A
-2
0
1
2
Cont
o
1
0
3
0
0.5
1
1.5
Cont
2
Control Voltage : V
(V)
Control Voltage : V
(V)
Ver.2004-06-21
-5-
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