NJM2337
Battery Charger IC
■ GE NERAL DESCRI PTION
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.
■ PACKA GE OUTLINE
NJM2337AF/BF/CF
■ FEATURES
● Operating Voltage 2.2V to 13V
● Internal Precision Voltage Reference
1.24V±1%
● PC Terminal Current 20mA max.
● Operating Current 280µA max.
● Bipolar Technology
● Package Outline MTP6
■ PIN CO NFI G URATIO N
PIN FUNCTION
1 : A -INPUT
2 : GND
3 : B +INPUT
4 : V
+
5 : PC
6 : A +INPUT
V
REF(B)
1
2
3
6
5
4
R
FB
V
REF(A)
A
+
B
+
-
-
NJM2337
■ A BUSO L UT E MA XIMUM RATINGS (Ta=25°C)
PARAMETER SYMBOL RATINGS UNIT
Supply Voltage V
+
+14 V
Differential Input Voltage V
ID
(Ach) 14V
(Bch) 14V V
Power Dissipation P
D
200 mW
PC Terminal Current I
PC
20 mA
Operating Temperature Range Topr -40 to +85 °C
Storage Temperature Range Tstg -50 to +150 °C
■ RECOMMEND E D OPERATING CONDITIONS
PARAMETER SYMBOL RATINGS UNIT
Operating Voltage Vopr 2.2 to 13 V
■ ELECTRICAL CHA RACTERISTI CS (V
+
=5V, Ta=25°C)
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Operating Current I
CC
I
PC
=off - 200 280 µA
Leakage Current I
PCLEAK
V
+
=V
PC
=13V - - 1 µA
Saturation Voltage V
PC(SAT)
I
PC
=20mA - 0.1 0.3 V
Feedback Resistance R
FB
0.7 1.0 1.3 Ω
[Ach]
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
A version 69 72 75 mV
B version 105 109 113 mV
Reference Voltage V
REF(A)
C version 145 151 157 mV
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 to
3.0 - V
Common Mode Rejection Ratio CMR - 70 - dB
Supply Voltage Rejection Ratio SVR - 80 - dB
Slew Rate SR - 0.5 - V/µs
Gain Bandwidth Product GB f=10kHz - 1 - MHz
[Bch]
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Reference Voltage V
REF(B)
1227 1240 1253 mV
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 to 4.0 - V
Common Mode Rejection Ratio CMR - 80 - dB
Supply Voltage Rejection Ratio SVR - 80 - dB
Slew Rate SR - 0.5 - V/µs
Gain Bandwidth Product GB f=10kHz - 1 - MHz
NJM2337
■ TYPI CA L APPLICATION
•
••
• TYPICAL APPLICATION1
•
••
• TYPICAL APPLICATION2
CONTROL IC
PC
−
−−
−
+ +
−
−−
−
V
REF(B)
Battery
PC
NJM2337A/B/C
5
1
6
2
3
4
A B
RSC
+
VI
R1
R2
VREF(A)
RFB
R1 + R2
VOUT = V
REF( B )
×
R2
(V)
V
REF( A )
CURRENT LIMIT = RSC ( A )
V
REF(A)
CONTROL
PC
−
−−
−
+
++
+
+
++
+
−
−−
−
V
REF(B)
Battery
PC
NJM2337A/B/C
5
1
6
2
3
4
A
B
R
SC
+
V
I
R1
R2
R
FB
V
REF(A)
CURRENT LIMIT= RSC (A)
OUTPUT= { V
REF ( B )
+ ( I
L
× R
SC
) } × R1+R2
R2 − ( I
L
× R
SC
) ( V )
NJM2337
■ TYPICAL CHARACTERISTI CS
Ach Voltage Gain , Phase vs. Frequency
Characteristic
( V+=5V ,Ta=25°C )
-50
-30
-10
10
30
50
100 1,000 10,000 100,000 1,000,000 10,000,000
Frequency Hz
Voltage Gain dB
-225
-180
-135
-90
-45
0
45
90
135
180
225
VoltagePhase (deg)
dB
Phase
Bch Voltage Gain , Phase vs. Frequency Characteristic
( V+=5 V ,Ta =2 5 ° C )
-50
-40
-30
-20
-10
0
10
20
30
40
50
100 1,000 10,000 100,000 1,000,000 10,000,000
Frequency Hz
Voltage Gain dB
-225
-180
-135
-90
-45
0
45
90
135
180
225
VoltagePhase (deg)
dB
Phase
Supply Current(I cc) vs. Supply Voltage(Vcc)
0
50
100
150
200
250
300
0246 8101214
Vcc (V)
Icc (uA)
Supply Current(Icc) v s. Temper ature
0
50
100
150
200
250
300
-40-200 20406080
Ambient Temperature (°C)
Icc (uA)
Vcc=13V
Vcc=5V
INPUT BIAS CURRENT
0
10
20
30
40
50
60
70
-40-20 0 20406080
Ambient Temperature (°C)
Input Bias Current nA
Ach
Bch
NJM2337
VOLTAGE REFERENCE
(A Version)
68
69
70
71
72
73
74
-40 1060
Ambient Temperature (°C)
Vref (A) mV
VOLTAGE REFERENCE
(B Version)
105
106
107
108
109
110
111
112
-40 1060
Ambient Temperature (°C)
Vref ( A ) mV
VOLTAGE REFERENCE
(C Version)
147
148
149
150
151
152
153
154
-40 1060
Ambient Temperature(°C)
Vref ( A ) mV
SATURATION VOLTAGE vs. OUTPUT CURRENT
(Ach.)
0.0
0.2
0.4
0510152025303540
Output Current (mA)
Saturation Voltage (V)
SATURATION VOLTAGE vs. OUTPUT CURRENT
(Bch)
0.0
0.2
0.4
0510152025303540
Output Current (mA)
Saturation Voltage (V)
NJM2337
The specifications on this data book are only given for
information, without any guarantee as regards eithe
r
mistakes or omissions. The application circuit in this dat
a
b
ook are described only to show representative usages o
f
the product and not intended for the guarantee o
r
permission of any right including the industrial rights.
A m p.G ain vs. Ambient Temperat ur e
( Bch )
60
70
80
90
100
110
120
-40-20 0 20406080
Ambient Te m pe rature (°C)
dB
AV
SVR+
SVR-
CMR
A m p.G ain vs. A m bient Te m perat ure
( Ach )
60
70
80
90
100
110
120
-40-200 20406080
Ambient Temperature (°C)
dB
AV
SVR+
SVR-
CMR
I nput Com mon Mode Vol tage Range vs.
Ambient Temperature ( Ach)
Vcc=5V
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
-40 10 60
Ambient Temperature ( ° C)
Vicm V
VICM-
VICM+
I np ut Common Mode Vol tage Range vs.
Ambi en t Tem perature (Bch)
Vcc=5V
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
-40 10 60
Ambient T emperature (°C)
Vicm V
\
VICM-
VICM+
