NJM2346
VOLTAGE AND CURRENT CONTROL IC
■GENERAL
DESCRIPTION
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.
■PACKAGE
OUTLINE
NJM2346M
NJM2346RB1
■FEATURES
●
Low Quiescent Current
●
Precision AMP.
●
Operating Voltage
●
Precision Voltage Reference
●
PC pin Sink Current
●
Bipolar Technology
●
Package Outline
■PIN
CONFIGURATION
250uA typ.
Vio=0.5mV typ.
2.2V to 13V
1.24V±1%
20mA max.
DMP8, TVSP8
1
A
8
V
REF
2
3
4
B
7
6
5
PIN FUNCTION
1. PC
2. A -INPUT
3. A +INPUT
4. GND
5. B +INPUT
6. B -INPUT
7. V
REF
8. V
+
■ABSOLUTE
MAXIMUM RATINGS (Ta=25°C)
PARAMETER
SYMBOL
Supply Voltage
V
+
Differential Input Voltage
Common Mode Input Voltage
PC Terminal Current
Power Dissipation
Operating Temperature Range
Storage Temperature Range
V
ID
V
IC
I
PC
P
D
T
OPR
T
STG
MAXIMUM RATINGS
14
(Ach) 14
(Bch) 14
(Ach) -0.3
∼
14 (note)
(Bch) -0.3
∼
14 (note)
20
(DMP 8)
300
(TVSP 8)
320
-40
∼
+85
-50
∼
+150
UNIT
V
V
V
mA
mW
°C
°C
(note) When the supply voltage is less than 14V,
the absolute maximum input voltage is equal to the supply voltage.
Ver.2003-05-21
-1-
NJM2346
■RECOMMENDED
OPERATING CONDITIONS (Ta=25°C)
PARAMETER
SYMBOL
MAXIMUM RATINGS
Operating Voltage
Vopr
2.2
∼
13
■ELECTRICAL
CHARACTERISTICS (V
+
=5V,Ta=25°C)
GENERAL CHARACTERISTICS
PARAMETER
SYMBOL
TEST CONDITION
Operating Current
Leakage Current
Saturation Voltage
Reference Voltage
Reference Voltage
Load Regulation
[Ach]
PARAMETER
Input Offset Voltage
Input Offset Current
Input Bias Current
Large Signal Voltage Gain
Input Common Mode
Voltage Range
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
Slew Rate
Gain Bandwidth Product
[Bch]
PARAMETER
Input Offset Voltage
Input Offset Current
Input Bias Current
Large Signal Voltage Gain
Input Common Mode
Voltage Range
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
Slew Rate
Gain Bandwidth Product
SYMBOL
V
IO
I
IO
I
B
A
V
V
ICM
CMR
SVR
SR
GB
TEST CONDITION
MIN.
–
–
–
–
0.5
∼
4.0
–
–
–
–
TYP.
0.5
10
20
80
–
80
80
0.5
1
MAX.
2
50
80
–
–
–
–
–
–
UNIT
mV
nA
nA
dB
V
dB
dB
V/uA
MHz
SYMBOL
V
IO
I
IO
I
B
A
V
V
ICM
CMR
SVR
SR
GB
TEST CONDITION
MIN.
–
–
–
–
-0.2
∼
3.0
–
–
–
–
TYP.
0.5
10
40
80
–
80
80
0.5
1
MAX.
2
50
160
–
–
–
–
–
–
UNIT
mV
nA
nA
dB
V
dB
dB
V/uA
MHz
I
CC
I
PCLEAK
V
PC(SAT)
V
REF
∆V
REF
/
∆I
REF
I
PC
=off
V
+
=V
PC
=13V
I
PC
=20mA
I
REF
=0mA
I
REF
=0mA
∼
1mA
UNIT
V
MIN.
–
–
–
1227
–
TYP.
250
–
0.1
1240
–
MAX.
350
1
0.3
1253
10
UNIT
uA
uA
V
mV
mV
f=10kHz
f=10kHz
-2-
Ver.2003-05-21
NJM2346
■
TYPICAL APPLICATIONS
PC
R5
V
I
CONTROL IC
PC
R1
R3
2
3
R2
R
SC
R4
4
8
A
1
NJM2346
B
V
REF
=1.24V
±
1%
Battery
5
6
7
R6
Ver.2003-05-21
-3-
NJM2346
■TYPICAL
CHARACTERISTICS
Ach Voltage Gain · Phase vs. Frequency
50
Voltage Gain A
V
(dB)
40
30
20
10
Gain
0
100
1k
10k 100k
1M
Frequency f (Hz)
0
10M
Phase
(V
+
=5V,Ta=25°C)
225
Bch Voltage Gain · Phase vs. Frequency
(V
+
=5V,Ta=25°C)
225
50
Voltage Gain A
V
(dB)
40
30
20
10
Gain
Phase
180
Phase
Φ
(deg)
135
90
45
180
135
90
45
0
10M
Phase
Φ
(deg)
3
0
100
1k
10k 100k 1M
Frequency f (Hz)
350
Operating Current I
CC
(uA)
300
250
200
150
100
50
0
Operating Current vs. Operating Voltage
(I
PC
=off,Ta=25°C)
1.4
Reference Voltage V
REF
(V)
1.2
1
0.8
0.6
0.4
0.2
0
Reference Voltage vs. Operating Voltage
(I
REF
=0mA,Ta=25°C)
0
2
4
6
8
10
12
14
0
2
4
6
8
10
12
14
Operating Voltage V
+
(V)
Saturation Voltage vs. PC Terminal Current
(V
+
=5V,Ta=25°C)
Reference Voltage V
REF
(V)
Operating Voltage V
+
(V)
Reference Voltage vs. 7pin Output Current
(V
+
=5V,Ta=25°C)
Saturation Voltage V
PC(SAT)
(V)
0.3
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0.2
0.1
0
0
5
10
15
PC Terminal Current I
PC
(mA)
20
0
1
2
7pin Output Current I
REF
(mA)
Ver.2003-05-21
-4-
NJM2346
■TYPICAL
CHARACTERISTICS
Operating Current vs. Temperature
(V
+
=5V,I
PC
=off)
Saturation Voltage V
PC(SAT)
(V)
Saturation Voltage vs. Temperature
(V
+
=5V,I
PC
=20mA)
350
Operating Current I
CC
(uA)
300
250
200
150
100
50
0
0.3
0.2
0.1
0
-50 -25
0
25
50
75 100 125 150
Temperature Ta (°C)
Input Offset Voltage vs. Temperature
(V
+
=5V)
-50 -25
0
25
50
75 100 125 150
Temperature Ta (°C)
Reference Voltage vs. Temperature
(V
+
=5V,I
REF
=0mA)
Input Offset Voltage Vio (mV)
1.26
Reference Voltage V
REF
(V)
1.25
1.24
1.23
1.22
2
1.5
1
0.5
0
-0.5
-1
-1.5
-2
Ach
Bch
-50 -25
0
25
50
75 100 125 150
-50 -25
0
25
50
75 100 125 150
Temperature Ta (°C)
Input Bias Voltage vs. Temperature
(V
+
=5V)
Temperature Ta (°C)
150
Input Bias Voltage I
B
(nA)
100
50
0
-50
-100
-150
Ach
Bch
[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.
-50 -25
0
25
50
75 100 125 150
Temperature Ta (°C)
Ver.2003-05-21
-5-
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