NJM2885
- 1 -
Ver.2003-03-10
LOW DROPOUT VOLTAGE REGULATOR
s
GENERAL DESCRIPTION
s PACKAGE OUTLINE
The NJM2885 is low dropout voltage regulator designed for
portable application.
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
s
FEATURES
q
High Ripple Rejection
75dB typ. (f=1kHz)
q
Output Noise Voltage
Vno=45
Vrms
q
Output capacitor with 2.2
F ceramic capacitor (Vo
2.7V)
q
Output Current
Io(max.)=500mA
q
High Precision Output
Vo
1.0%
q
Low Dropout Voltage
0.18V typ. (Io=300mA)
q
Internal Short Circuit Current Limit
q
Internal Thermal Overload Protection
q
Bipolar Technology
q
Package Outline
TO-252
s
PIN CONFIGURATION
NJM2885DL1
s
EQUIVALENT CIRCUIT
V
OUT
GND
V
IN
Thermal
Protection
Bandgap
Reference
s
OUTPUT VOLTAGE RANK LIST
Device Name
Vout
NJM2885DL1-25 2.5V
NJM2885DL1-26 2.6V
NJM2885DL1-03 3.0V
NJM2885DL1-33 3.3V
NJM2885DL1-05 5.0V
NJM2885DL1
PINFUNCTION
1. IN
2. GND
3. OUT
1
3
2
NJM2885
- 2 -
Ver.2003-03-10
s
ABSOLUTE MAXIMUM RATINGS
(Ta=25
C)
PARAMETER SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
+14 V
Power Dissipation
P
D
8(Tc=25
C)
0.8(Ta
25
C)
W
Operating Temperature
Topr
-
40
+85
C
Storage Temperature
Tstg
-
40
+125
C
s
ELECTRICAL CHARACTERISTICS
(V
IN
=Vo+1V, C
IN
=0.33
F, Co=2.2
F:Vo
2.7V (Co=4.7
F: Vo
2.6V), Ta=25
C)
PARAMETER SYMBOL TEST
CONDITION MIN.
TYP.
MAX.
UNIT
Output Voltage
Vo
Io=30mA
-1.0%
-
+1.0%
V
Quiescent Current
I
Q
Io=0mA
-
200 300
A
Output Current
Io
Vo
-
0.3V
500 650 - mA
Line Regulation
Vo/
V
IN
V
IN
=Vo+1V
Vo+6V, Io=30mA
-
-
0.10 %/V
Load Regulation
Vo/
Io Io=0
500mA
-
-
0.03 %/mA
Dropout Voltage
V
I
-
O
Io=300mA
-
0.18 0.28 V
Ripple Rejection
RR
ein=200mVrms,f=1kHz, Io=10mA
Vo=3V Version
-
75
-
dB
Average Temperature
Coefficient of Output Voltage
Vo/
Ta Ta=0
+85
C, Io=10mA
-
50
-
ppm/
C
Output Noise Voltage
V
NO
f=10Hz
80kHz, Io=10mA,
Vo=3V Version
-
45
-
Vrms
(note) Please confirm the specification separately because some parameters depend on output voltage.
s
TEST CIRCUIT
NJM2885
V
IN
V
IN
V
OUT
GND
0.33uF
I
IN
I
OUT
V
OUT
V
A
2.2uF
OR
4.7uF(Vo
2.6V)
(Ceramic Capacitor)
s
POWER DISSIPATION VS. AMBIENT TEMPERATURE
NJU2885DL1
(Topr=-40~+85C,Tj=125C,P
D
=8W(T
C
=25C),P
D
=0.8W(Ta
25C))
0
2
4
6
8
10
-50
-25
0
25
50
75
100
Ambient Temperature Ta(C)
P
o
w
e
r D
i
ssipation P
D
(W
)
Heat Sink
Without Heat Sink
HS
=5C/W
HS
=20C/W
HS
=10C/W
NJM2885
- 3 -
Ver.2003-03-10
[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.
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