NJM2346
- 1 -
Ver.2003-05-21
VOLTAGE AND CURRENT CONTROL IC
GENERAL DESCRIPTION
PACKAGE OUTLINE
FEATURES
Low Quiescent Current
250uA typ.
Precision AMP.
Vio=0.5mV typ.
Operating Voltage
2.2V to 13V
Precision Voltage Reference
1.24V1%
PC pin Sink Current
20mA max.
Bipolar Technology
Package Outline
DMP8, TVSP8
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS (Ta=25C)
PARAMETER SYMBOL
MAXIMUM
RATINGS
UNIT
Supply Voltage
V
+
14 V
Differential Input Voltage
V
ID
(Ach) 14
(Bch) 14
V
Common Mode Input Voltage
V
IC
(Ach) -0.3
14 (note)
(Bch) -0.3
14 (note)
V
PC Terminal Current
I
PC
20 mA
Power Dissipation
P
D
(DMP 8)
300
(TVSP 8)
320
mW
Operating Temperature Range
T
OPR
-40
+85
C
Storage Temperature Range
T
STG
-50
+150
C
(note) When the supply voltage is less than 14V,
the absolute maximum input voltage is equal to the supply voltage.
The
NJM2346
is a low power operation battery charger IC.
It includes a voltage reference and two operational amplifiers for
voltage and current control needed for a design of secondary circuit
for battery chargers and switching regulators.
Low current consumption design contributes low standby power
required for 1A class battery chargers.
NJM2346M
NJM2346RB1
1. PC
2. A -INPUT
3. A +INPUT
4. GND
5. B +INPUT
6. B -INPUT
7. V
REF
8. V
+
PIN FUNCTION
V
REF
1
2
3
4
5
6
7
8
A
B
NJM2346
- 2 -
Ver.2003-05-21
RECOMMENDED OPERATING CONDITIONS (Ta=25C)
PARAMETER SYMBOL
MAXIMUM
RATINGS
UNIT
Operating Voltage
Vopr
2.2
13
V
ELECTRICAL CHARACTERISTICS (V
+
=5V,Ta=25C)
GENERAL CHARACTERISTICS
PARAMETER SYMBOL
TEST
CONDITION
MIN.
TYP.
MAX.
UNIT
Operating Current
I
CC
I
PC
=off
250
350
uA
Leakage Current
I
PCLEAK
V
+
=V
PC
=13V
1
uA
Saturation Voltage
V
PC(SAT)
I
PC
=20mA
0.1
0.3
V
Reference Voltage
V
REF
I
REF
=0mA 1227
1240
1253
mV
Reference Voltage
Load Regulation
V
REF
/
I
REF
I
REF
=0mA
1mA
10
mV
[Ach]
PARAMETER SYMBOL
TEST
CONDITION
MIN.
TYP.
MAX.
UNIT
Input Offset Voltage
V
IO
0.5 2 mV
Input Offset Current
I
IO
10 50 nA
Input Bias Current
I
B
40 160 nA
Large Signal Voltage Gain
A
V
80 dB
Input Common Mode
Voltage Range
V
ICM
-0.2
3.0
V
Common Mode Rejection Ratio
CMR
80
dB
Supply Voltage Rejection Ratio
SVR
80
dB
Slew Rate
SR
0.5
V/uA
Gain Bandwidth Product
GB
f=10kHz
1
MHz
[Bch]
PARAMETER SYMBOL
TEST
CONDITION
MIN.
TYP.
MAX.
UNIT
Input Offset Voltage
V
IO
0.5 2 mV
Input Offset Current
I
IO
10 50 nA
Input Bias Current
I
B
20 80 nA
Large Signal Voltage Gain
A
V
80 dB
Input Common Mode
Voltage Range
V
ICM
0.5
4.0
V
Common Mode Rejection Ratio
CMR
80
dB
Supply Voltage Rejection Ratio
SVR
80
dB
Slew Rate
SR
0.5
V/uA
Gain Bandwidth Product
GB
f=10kHz
1
MHz
NJM2346
- 3 -
Ver.2003-05-21
TYPICAL APPLICATIONS
CONTROL IC
PC
V
REF
=1.24V
1%
Battery
PC
NJM2346
1
2
3
4
6
7
5
8
A
B
R
SC
V
I
R1 R3
R2 R4
R5
R6
NJM2346
- 4 -
Ver.2003-05-21
TYPICAL CHARACTERISTICS
Operating Current vs. Operating Voltage
(I
PC
=off,Ta=25C)
0
50
100
150
200
250
300
350
0
2
4
6
8
10
12
14
Operating Voltage V
+
(V)
O
perat
ing Current
I
CC
(u
A)
Saturation Voltage vs. PC Terminal Current
(V
+
=5V,Ta=25C)
0
0.1
0.2
0.3
0
5
10
15
20
PC Terminal Current I
PC
(mA)
Sat
u
rat
i
on Volt
age V
PC(
SAT)
(V)
Reference Voltage vs. 7pin Output Current
(V
+
=5V,Ta=25C)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0
1
2
3
7pin Output Current I
REF
(mA)
Ref
e
rence Volt
age
V
REF
(V)
Ach Voltage Gain Phase vs. Frequency
(V
+
=5V,Ta=25C)
0
10
20
30
40
50
100
1k
10k
100k
1M
10M
Frequency f (Hz)
Volt
age Gain A
V
(
d
B
)
0
45
90
135
180
225
Phas
e
(deg)
Gain
Phase
Reference Voltage vs. Operating Voltage
(I
REF
=0mA,Ta=25C)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0
2
4
6
8
10
12
14
Operating Voltage V
+
(V)
Ref
e
rence Volt
age V
RE
F
(V)
Bch Voltage Gain Phase vs. Frequency
(V
+
=5V,Ta=25C)
0
10
20
30
40
50
100
1k
10k
100k
1M
10M
Frequency f (Hz)
Volt
age Gain A
V
(d
B)
0
45
90
135
180
225
Phase
(deg)
Gain
Phase
NJM2346
- 5 -
Ver.2003-05-21
TYPICAL CHARACTERISTICS
[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.
Operating Current vs. Temperature
(V
+
=5V,I
PC
=off)
0
50
100
150
200
250
300
350
-50 -25
0
25 50 75 100 125 150
Temperature Ta (C)
O
perat
ing Current
I
CC
(u
A)
Saturation Voltage vs. Temperature
(V
+
=5V,I
PC
=20mA)
0
0.1
0.2
0.3
-50 -25
0
25 50 75 100 125 150
Temperature Ta (C)
Sat
u
rat
i
on Volt
age V
PC(
SAT)
(V)
Reference Voltage vs. Temperature
(V
+
=5V,I
REF
=0mA)
1.22
1.23
1.24
1.25
1.26
-50 -25
0
25 50 75 100 125 150
Temperature Ta (C)
Ref
e
rence Volt
age V
REF
(V)
Input Offset Voltage vs. Temperature
(V
+
=5V)
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
-50 -25
0
25 50 75 100 125 150
Temperature Ta (C)
I
nput
O
f
f
s
et
Volt
age Vio (mV)
Ach
Bch
Input Bias Voltage vs. Temperature
(V
+
=5V)
-150
-100
-50
0
50
100
150
-50 -25
0
25 50 75 100 125 150
Temperature Ta (C)
I
nput
Bias Volt
age I
B
(n
A)
Ach
Bch
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