NJM2893
3OUTPUT LOW DROPOUT VOLTAGE REGULATOR
■GENRAL
DESCRIPTION
The NJM2893 is a 3ch low dropout voltage regulator
with ON/OFF Control in TVSP-8 package.
It is suitable for camcorder, IC decoder, camera and
other portable items.
■FEATURES
●High
Ripple Rejection
70dB typ. at f=1kHz
●Low
Noise
45µVrms typ.
●Output
capacitor with 1.0µF ceramic capacitor at Vo≥2.7V
●Output
Current
Io(max.)=100mA x 3ch
●High
Precision Output
±1.0%
●Low
Dropout Voltage
0.1V typ. at Io=60mA
●ON/OFF
Control
●Internal
Thermal Overload Protection
●Internal
Short Circuit Current Limit
●Bipolar
Technology
●Package
Outline
TVSP-8
■PIN
CONFIGURATION
1
2
3
4
8
7
6
5
Preliminary
■PACKAGE
OUTLINE
NJM2893RB1
NJM2893RB1
■EQUIVALENT
CIRCUIT
V
IN
CONTROL1
PIN FUNCTION
1. V
OUT
1
5. CONTROL3
2. V
OUT
2
6. CONTROL2
3. V
OUT
3
7. CONTROL1
4. GND
8. V
IN
V
OUT
1
Thermal
Protection
Bandgap
Reference
V
OUT
2
CONTROL2
V
OUT
3
CONTROL3
GND
Ver.2003-03-11
-1-
NJM2893
Preliminary
■ABSOLUTE
MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
Control Voltage
V
CONT
Power Dissipation
P
D
Operating Temperature
Topr
Storage Temperature
Tstg
RATINGS
+14
+14(note1)
320
-40 to +85
-40 to+125
(Ta=25°C)
UNIT
V
V
mW
°C
°C
(note1)When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage.
■ERECRICAL
CHARACTERISTICS
(V
IN
=Vo+1V, C
IN
=0.1µF, Co=1.0µF: Vo≥2.7V (Co=2.2µF: Vo≤2.6V), Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
Output Voltage
Vo
Io=30mA
Quiescent Current1
I
Q1
V
CONT
1= V
IN
, V
CONT
2= V
CONT
3= 0V
*1ch ON
Io=0mA, expect Icont
Quiescent Current2
I
Q2
V
CONT
1= V
CONT
2= V
IN,
V
CONT
3= 0V
*2ch ON
Io=0mA, expect Icont
Quiescent Current3
I
Q3
V
CONT
1= V
CONT
2= V
CONT
3= V
IN
Io=0mA, expect Icont
Quiescent Current at
I
Q(OFF)
V
CONT
=0V
Control OFF
Output Current
Io
Vo-0.3V
Line Regulation
∆Vo/∆V
IN
V
IN
=Vo+1V to Vo+6V, Io=30mA
Load Regulation
∆Vo/∆Io
Io=0 to 60mA
Dropout Voltage
∆V
I
-
O
Io=60mA
Ripple Rejection
RR
ein=200mVrms,f=1kHz,Io=10mA,
Vo=3V
Average Temperature
∆Vo/∆Ta
Ta=0 to 85°C, Io=10mA
Coefficient of Output
Voltage
Output Noise Voltage
V
NO
f=10Hz to 80kHz, Io=10mA, Vo=3V
Control Voltage for
V
CONT(ON)
ON-state
Control Voltage for
V
CONT(OFF)
OFF-state
MIN.
-1.0%
-
-
-
-
100
-
-
-
-
-
-
1.6
-
TYP.
-
140
240
340
-
130
-
-
0.10
70
±50
45
-
-
MAX.
+1.0%
220
370
520
100
-
0.10
0.03
0.18
-
-
-
-
0.6
UNIT
V
µA
µA
µA
nA
mA
%/V
%/mA
V
dB
ppm/°C
µVrms
V
V
(note2) Please confirm the specification separately because some parameters depend on output voltage.
■OUTPUT
VOLTAGE RANK LIST
Device Name
CH1
NJM2893RB1-CCC
2.1V
NJM2893RB1-LLL
3.0V
NJM2893RB1-YLC
5.0V
VOUT
CH2
2.1V
3.0V
3.0V
CH3
2.1V
3.0V
2.1V
-2-
Ver.2003-03-11
NJM2893
Preliminary
■TEST
CIRCUIT
A
V
IN
I
IN
V
IN
V
OUT
1
V
OUT
1
I
OUT
1
V
1.0µF
or
2.2µF(Vo≤2.6V)
0.1µF
NJM2893
A
I
CONT
CONTROL1
V
OUT
2
V
OUT
2
I
OUT
2
V
1.0µF
or
2.2µF(Vo≤2.6V)
V
V
CONT
1
A
V
V
CONT
2
I
CONT
2
CONTROL2
V
OUT
3
V
OUT
3
I
OUT
3
V
1.0µF
or
2.2µF(Vo≤2.6V)
A
V
V
CONT
3
I
CONT
3
CONTROL
GND
Ver.2003-03-11
-3-
NJM2893
Preliminary
■TYPICAL
APPLICATION
(1) In the case where ON/OFF Control is not required:
V
IN
0.1µF
V
IN
V
OUT
1
V
OUT
1
1.0µF
or
2.2μF(Vo≤2.6V)
NJM2893
R1
(0½300kΩ)
CONTROL
V
OUT
2
V
OUT
2
1.0µF
or
2.2µF(Vo≤2.6V)
R2
(0½300kΩ)
CONTROL
V
OUT
3
R3
(0½300kΩ)
V
OUT
3
1.0µF
or
2.2µF(Vo≤2.6V)
CONTROL
GND
Connect control terminal to VIN terminal
In case a resistance “R” is used, the quiescent current will be decreased. However, the but minimum operating
voltage will be increase as well. Please refer to a figure of Output Voltage vs. Control Voltage.
(2)In use of ON/OFF Control:
-4-
Ver.2003-03-11
NJM2893
V
IN
V
IN
V
OUT
1
V
OUT
1
1.0µF
or
2.2µF(Vo≤2.6V)
0.1µF
R1
R2
R3
NJM2893
CONTROL1
V
OUT
2
V
OUT
2
1.0µF
or
2.2µF(Vo≤2.6V)
CONTROL2
V
OUT
3
V
OUT
3
1.0µF
or
2.2µF(Vo≤2.6V)
CONTROL3
GND
In case the control terminal is “H”, the output is enabled.
The control terminal is ”L” or “open”, the output is disabled.
Ver.2003-03-11
-5-
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