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 1.24V±1%
● PC pin Sink Current 20mA max.
● Bipolar Technology
● Package Outline DMP8, TVSP8
■PIN CONFIGURATION
■ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
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 fo
r
voltage and current control needed for a design of secondary circui
t
for battery chargers and switching regulators.
Low current consumption design contributes low standby powe
r
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=25°C)
PARAMETER SYMBOL MAXIMUM RATINGS UNIT
Operating Voltage Vopr 2.2 ∼ 13 V
■ELECTRICAL CHARACTERISTICS (V
+
=5V,Ta=25°C)
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
AB
RSC
VI
R1 R3
R2 R4
R5
R6
NJM2346
- 4 -
Ver.2003-05-21
■TYPICAL CHARACTERISTICS
Operating Current vs. Operating Voltage
(I
PC
=off,Ta=25°C)
0
50
100
150
200
250
300
350
02468101214
Operating Voltage V
+
(V)
Operating Current I
CC
(uA)
Saturation Voltage vs. PC Terminal Current
(V
+
=5V,Ta=25°C)
0
0.1
0.2
0.3
0 5 10 15 20
PC Terminal Current I
PC
(mA)
Saturation Voltage V
PC(SAT)
(V)
Reference Voltage vs. 7pin Output Current
(V
+
=5V,Ta=25°C)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0123
7pin Output Current I
REF
(mA)
Reference Voltage V
REF
(V)
Ach Voltage Gain · Phase vs. Frequency
(V
+
=5V,Ta=25°C)
0
10
20
30
40
50
100 1k 10k 100k 1M 10M
Frequency f (Hz)
Voltage Gain A
V
(dB)
0
45
90
135
180
225
Phase Φ (deg)
Gain
Phase
Reference Voltage vs. Operating Voltage
(I
REF
=0mA,Ta=25°C)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
02468101214
Operating Voltage V
+
(V)
Reference Voltage V
REF
(V)
Bch Voltage Gain · Phase vs. Frequency
(V
+
=5V,Ta=25°C)
0
10
20
30
40
50
100 1k 10k 100k 1M 10M
Frequency f (Hz)
Voltage Gain A
V
(dB)
0
45
90
135
180
225
Phase Φ (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)
Operating Current I
CC
(uA)
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)
Saturation Voltage 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 255075100125150
Temperature Ta (°C)
Reference Voltage 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)
Input Offset Voltage Vio (mV)
A
ch
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)
Input Bias Voltage I
B
(nA)
A
ch
Bch