NJM2337
Battery Charger IC
■ GENERAL DESCRIPTION
■ PACKAGE OUTLINE
The NJM2337 is a voltage and current control IC which
contains precision voltage reference.
It is suitable for battery charger, second controller of
switching regulator systems, and other battery systems.
NJM2337AF/BF/CF
■ FEATURES
● Operating Voltage
2.2V to 13V
● Internal Precision Voltage Reference
1.24V±1%
20mA max.
280µA max.
● PC Terminal Current
● Operating Current
● Bipolar Technology
● Package Outline
MTP6
■ PIN CONFIGURATION
VREF(A)
1
- A
+
6
RFB
2
3
5
VREF(B)
- B
+
4
PIN FUNCTION
1 : A -INPUT
2 : GND
3 : B +INPUT
4 : V+
5 : PC
6 : A +INPUT
NJM2337
■ ABUSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
SYMBOL
V+
Differential Input Voltage
VID
Power Dissipation
PC Terminal Current
Operating Temperature Range
Storage Temperature Range
PD
IPC
Topr
Tstg
RATINGS
+14
(Ach) 14V
(Bch) 14V
200
20
-40 to +85
-50 to +150
(Ta=25°C)
UNIT
V
V
mW
mA
°C
°C
■ RECOMMENDED OPERATING CONDITIONS
PARAMETER
Operating Voltage
SYMBOL
Vopr
RATINGS
2.2 to 13
UNIT
V
■ ELECTRICAL CHARACTERISTICS
PARAMETER
Operating Current
Leakage Current
Saturation Voltage
Feedback Resistance
(V+=5V, Ta=25°C)
MAX.
UNIT
280
µA
1
µA
0.3
V
1.3
Ω
SYMBOL
ICC
IPCLEAK
VPC(SAT)
RFB
CONDITIONS
IPC=off
V+=VPC=13V
IPC=20mA
MIN.
0.7
TYP.
200
0.1
1.0
SYMBOL
CONDITIONS
A version
B version
C version
MIN.
69
105
145
-
MAX.
75
113
157
160
-
UNIT
mV
mV
mV
nA
dB
-
V
-
dB
dB
V/µs
MHz
MAX.
1253
80
-
UNIT
mV
nA
dB
V
dB
dB
V/µs
MHz
[Ach]
PARAMETER
Reference Voltage
VREF(A)
Input Bias Current
Large Signal Voltage Gain
IB
AV
Input Common Mode Voltage Range
VICM
-
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
Slew Rate
Gain Bandwidth Product
CMR
SVR
SR
GB
-
TYP.
72
109
151
40
80
-0.2 to
3.0
70
80
0.5
1
MIN.
1227
-
TYP.
1240
20
80
0.5 to 4.0
80
80
0.5
1
f=10kHz
[Bch]
PARAMETER
Reference Voltage
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
VREF(B)
IB
AV
VICM
CMR
SVR
SR
GB
CONDITIONS
f=10kHz
NJM2337
■ TYPICAL APPLICATION
• TYPICAL APPLICATION1
+
PC
R1
VI
4
CONTROL IC
1
6
PC
NJM2337A/B/C
5
VREF(A)
−
+
A
B
RFB
3
+
−
Battery
VREF(B)
R2
2
RSC
R1 + R2
VOUT = VREF( B ) ×
(V)
R2
VREF( A )
CURRENT LIMIT =
RSC
(A)
• TYPICAL APPLICATION2
+
PC
R1
VI
CONTROL
1
4
VREF(A)
5
−
+
6
PC
NJM2337A/B/C
A
B
RFB
−
VREF(B)
3
Battery
R2
2
RSC
OUTPUT= { VREF ( B ) + ( IL × RSC ) } ×
CURRENT LIMIT=
+
VREF(A)
RSC
(A)
R1+R2
R2
− ( IL × RSC ) ( V )
NJM2337
■ TYPICAL CHARACTERISTICS
Ach Voltage Gain , Phase vs. Frequency
C haracteristic
Bch Voltage Gain , Phase vs. Frequenc y Characteristic
( V+=5 V ,Ta =2 5°C )
( V+=5V ,Ta=25°C )
10
P h a se
-10
-30
-50
100
1,000
10,000
100,000
1,000,000
225
dB
40
180
30
135
20
90
P hase
10
45
0
0
-10
-45
-20
-90
-30
-135
-40
-180
-50
10,000,000
-225
100
1,000
10,000
Frequency Hz
100,000
1,000,000
10,000,000
Frequency Hz
Su pply C urrent(Icc) vs. S upp ly Voltage(Vcc)
300
300
250
250
200
200
Icc (uA)
Ic c (uA )
Supply Current(Icc) vs. Temperature
150
100
50
50
Vcc=5V
0
0
0
2
4
6
8
10
12
14
INPUT BIAS CURRENT
70
60
Ach
50
40
30
20
10
Bch
0
-20
0
20
-40
-20
0
20
40
Ambient Temperature (°C)
V cc (V )
Input Bias Current nA
150
100
-40
Vcc=13V
40
Ambient Temperature (°C)
60
80
60
80
V oltageP hase (deg)
30
50
V oltage Gain dB
V oltage Gain dB
dB
VoltagePhase (deg)
225
180
135
90
45
0
-45
-90
-135
-180
-225
50
NJM2337
VOLTAGE REFERENCE
VOLTAGE REFERENCE
(B Version)
74
112
73
111
Vref ( A ) mV
Vref (A) mV
(A Version)
72
71
70
110
109
108
107
106
69
105
68
-40
10
-40
60
10
60
Ambient Temperature (°C)
Ambient Temperature (°C)
VOLTAGE REFERENCE
SATURATION VOLTAGE vs. OUTPUT CURRENT
(C Version)
(Ach.)
154
0.4
Saturation Voltage (V)
153
Vref ( A ) mV
152
151
150
149
0.2
148
0.0
147
0
10 Temperature(°C)
Ambient
-40
60
(Bch)
Saturation Voltage (V)
0.4
0.2
0.0
5
10
15
20
25
Output Current (mA)
30
10
15
20
25
Output Current (mA)
SATURATION VOLTAGE vs. OUTPUT CURRENT
0
5
35
40
30
35
40
NJM2337
Amp.Gain vs. Ambient Temperature
Amp.Gain vs. Ambient Temperature
( Bch )
( Ach )
120
120
110
110
AV
SVR+
90
SVR-
80
AV
100
dB
dB
100
SVR+
90
80
CMR
70
70
-40
-20
SVR-
60
CMR
60
0
20
40
60
-40
80
-20
Ambient Temperature (°C)
4.0
3.0
4.0
0.0
-1.0
Vicm V
Vicm V
5.0
VICM+
40
60
80
Vcc=5V
Vcc=5V
5.0
VICM-
20
Input Common Mode Voltage Range vs.
Ambient Temperature (Bch)
Input Common Mode Voltage Range vs.
Ambient Temperature (Ach)
2.0
1.0
0
Ambient Temperature (°C)
3.0
\
VICM+
2.0
VICM-
1.0
0.0
-1.0
-40
10
60
Ambient Temperature (°C)
-40
10
60
Ambient Temperature (°C)
The specifications on this data book are only given for
information, without any guarantee as regards either
mistakes or omissions. The application circuit in this data
book 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.