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NCP4300A
Dual Operational Amplifier
and Voltage Reference
The NCP4300A is a monolithic integrated circuit specifically
designed to control the output current and voltage levels of switch
mode battery chargers and power supplies. This device contains a
precision 2.6 V shunt reference and two operational amplifiers.
Op−Amp 1 is designed to perform voltage control and has its
non−inverting input internally connected to the reference. Op−Amp 2
is designed for current control and has both inputs uncommitted. The
NCP4300A offers the power converter designer a control solution that
features increased precision with a corresponding reduction in system
complexity and cost. This device is available in an 8−lead surface
mount package.
Features
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MARKING
DIAGRAM
8
8
1
SOIC−8
D SUFFIX
CASE 751
1
N4300
ALYWA
G
•
Pb−Free Packages are Available
Operational Amplifier
•
•
•
•
•
•
Low Input Offset Voltage: 0.5 mV
Input Common Mode Voltage Range Includes Ground
Low Supply Current: 210
mA/Op−Amp
(@V
CC
= 5.0 V)
Medium Unity Gain Bandwidth: 0.7 MHz
Large Output Voltage Swing: 0 V to V
CC
− 1.5 V
Wide Power Supply Voltage Range: 3.0 V to 35 V
A
L
Y
W
A
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Option Code
PIN CONNECTIONS
Out 1 1
In 1− 2
In 1+ 3
GND 4
(Top View)
8
7
6
5
V
CC
Out 2
In 2−
In 2+
Voltage Reference
•
Fixed Output Voltage Reference: 2.60 V
•
High Precision Over Temperature: 1.0%
•
Wide Sink Current Range: 80
mA
to 80 mA
Typical Applications
•
Battery Charger
•
Switch Mode Power Supply
ORDERING INFORMATION
Device
Package
SOIC−8
SOIC−8
(Pb−Free)
SOIC−8
SOIC−8
(Pb−Free)
Shipping
†
98 Units / Rail
98 Units / Rail
2500/Tape & Reel
2500/Tape & Reel
Output 1
1
+
−
2
3
2.6 V
4
−
8
7
+
6
V
CC
Output 2
NCP4300AD
NCP4300ADG
NCP4300ADR2
NCP4300ADR2G
Inputs 1
Inputs 2
5
GND
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
Figure 1. Functional Block Diagram
©
Semiconductor Components Industries, LLC, 2005
1
March, 2005 − Rev. 3
Publication Order Number:
NCP4300A/D
NCP4300A
ABSOLUTE MAXIMUM RATINGS
Rating
Supply Voltage (V
CC
to GND)
ESD Protection Voltage at any Pin (Human Body Model)
Op−Amp 1 and 2 Input Voltage Range (Pins 2, 5, 6)
Op−Amp 2 Input Differential Voltage Range (Pins 5, 6)
Voltage Reference Cathode Current (Pin 3)
Maximum Junction Temperature
Operating Ambient Temperature Range
Storage Temperature Range
Symbol
V
CC
V
ESD
V
IR
V
IDR
I
K
T
J
T
A
T
stg
Value
36
2.0 K (min)
−0.6 to V
CC
+0.6
V
CC
to GND
100
150
0 to 105
−55 to 150
Unit
V
V
V
V
mA
°C
°C
°C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
THERMAL CHARACTERISTICS
Rating
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Symbol
R
qJA
R
qJC
Value
155
45
Unit
°C/W
°C/W
TYPICAL ELECTRICAL CHARACTERISTICS
Characteristic
Total Supply Current, excluding Current in the Voltage Reference
V
CC
= 5.0 V, no load; 0°C
v
T
A
v
105°C
Op−Amp 1 (Op−amp with non−inverting input connected to the internal Vref)
(V
CC
= 5.0 V, V
out
= 1.4 V, T
A
= 25°C, unless otherwise noted)
Input Offset Voltage
T
A
= 25°C
T
A
= 0°C to 105°C
Input Offset Voltage Temperature Coefficient
T
A
= 0°C to 105°C
Input Bias Current (Inverting input only)
T
A
= 25°C
T
A
= 0°C to 105°C
Large Signal Voltage Gain (V
CC
= 15 V, R
L
= 2.0 kW, V
out
= 1.4 V to 11.4 V)
T
A
= 25°C
T
A
= 0°C to 105°C
Power Supply Rejection (V
CC
= 5.0 V to 30 V)
Output Source Current (V
CC
= 15 V, V
out
= 2.0 V, V
ID
= +1.0 V)
Output Sink Current (V
CC
= 15 V, V
out
= 2.0 V, V
ID
= −1.0 V)
Output Voltage Swing, High (V
CC
= 30 V, R
L
= 10 kW, V
ID
= +1.0 V)
T
A
= 25°C
T
A
= 0°C to 105°C
Output Voltage Swing, Low (R
L
= 10 kW, V
ID
= −1.0 V)
T
A
= 25°C
T
A
= 0°C to 105°C
Slew Rate (V
in
= 0.5 to 2.0 V, V
CC
= 15 V, R
L
= 2.0 kW, A
v
= 1.0, C
L
= 100 pF)
Unity Gain Bandwidth (V
CC
= 30 V, R
L
= 2.0 kW, C
L
= 100 pF, V
in
= 0.5 Vpp @
f = 70 kHz)
Total Harmonic Distortion (f = 1.0 kHz, A
V
= 10, R
L
= 2.0 kW, V
CC
= 30 V,
V
out
= 2.0 V
PP
)
V
IO
−
−
DV
IO
/DT
I
IB
−
−
A
VOL
50
25
PSRR
I
O+
I
O−
V
OH
27
27
V
OL
−
−
SR
BW
THD
0.3
0.3
−
17
−
0.5
0.7
0.02
100
100
−
−
−
V/ms
MHz
%
28
−
−
−
mV
40
10
10
100
−
90
16
25
−
−
−
−
−
dB
mA
mA
V
−50
−
−150
−150
V/mV
−
0.5
−
7.0
2.0
3.0
−
mV/°C
nA
mV
Symbol
I
CC
Min
−
Typ
0.42
Max
0.8
Unit
mA
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2
NCP4300A
TYPICAL ELECTRICAL CHARACTERISTICS
(continued)
Characteristic
Symbol
Min
Typ
Max
Unit
Op−Amp 2 (Independent op−amp)
(V
CC
= 5.0 V, V
out
= 1.4 V, T
A
= 25°C, unless otherwise noted)
Input Offset Voltage
T
A
= 25°C
T
A
= 0°C to 105°C
Input Offset Voltage Temperature Coefficient
T
A
= 0°C to 105°C
Input Offset Current
T
A
= 25°C
T
A
= 0°C to 105°C
Input Bias Current
T
A
= 25°C
T
A
= 0°C to 105°C
Input Common Mode Voltage Range (V
CC
= 0 V to 35 V)
Large Signal Voltage Gain (V
CC
= 15 V, R
L
= 2.0 kW, V
out
= 1.4 V to 11.4 V)
T
A
= 25°C
T
A
= 0°C to 105°C
Power Supply Rejection (V
CC
= 5.0 V to 30 V)
Common Mode Rejection (V
CM
= 0 V to 3.5 V)
T
A
= 25°C
T
A
= 0°C to 105°C
Output Source Current (V
CC
= 15 V, V
out
= 2.0 V, V
ID
= +1.0 V)
Output Sink Current (V
CC
= 15 V, V
out
= 2.0 V, V
ID
= −1.0 V)
Output Voltage Swing, High (V
CC
= 30 V, R
L
= 10 kW, V
ID
= +1.0 V)
T
A
= 25°C
T
A
= 0°C to 105°C
Output Voltage Swing, Low (R
L
= 10 kW, V
ID
= −1.0 V)
T
A
= 25°C
T
A
= 0°C to 105°C
Slew Rate (V
in
= 0.5 to 3.0 V, V
CC
= 15 V, R
L
= 2.0 kW, A
v
= 1.0, C
L
= 100 pF)
Unity Gain Bandwidth (V
CC
= 30 V, R
L
= 2.0 kW, C
L
= 100 pF, V
in
= 0.5 Vpp @
f = 70 kHz)
Total Harmonic Distortion (f = 1.0 KHz, A
V
= 10, R
L
= 2.0 kW, V
CC
= 30 V,
V
out
= 2.0 V
PP
)
Voltage Reference
Reference Voltage (I
K
= 10 mA)
T
A
= 25°C
T
A
= 0°C to 105°C
Reference Input Voltage Deviation Over Full Temperature Range
(I
K
= 10 mA, T
A
= 0°C to 105°C)
Minimum Cathode Current for Regulation
Dynamic Impedance
T
A
= 25°C, I
K
= 1.0 to 80 mA, f
t
1.0 KHz
T
A
= 0°C to 125°C, I
K
= 1.0 mA to 60 mA, f
t
1.0 KHz
V
ref
−
2.574
DV
ref
I
K(min)
|Z
KA
|
−
−
0.3
−
0.5
0.6
−
−
2.60
2.60
5.0
55
−
2.626
22
80
mV
mA
W
V
V
IO
−
−
DV
IO
/DT
I
IO
−
−
I
IB
−
−
V
ICR
A
VOL
50
25
PSRR
CMRR
40
30
I
O+
I
O−
V
OH
27
27
V
OL
−
−
SR
BW
THD
0.3
0.3
−
17
−
0.5
0.7
0.02
100
100
−
−
−
V/ms
MHz
%
28
−
−
−
mV
10
10
60
−
16
25
−
−
−
−
mA
mA
V
40
100
−
90
−
−
−
dB
dB
−
−50
−
0 to
V
CC
−1.5
−150
−150
−
V
V/mV
2.0
−
30
30
nA
−
0.5
−
7.0
2.0
3.0
−
mV/°C
nA
mV
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3
NCP4300A
2.620
V
ref
, REFERENCE VOLTAGE (V)
I
K
, CATHODE CURRENT (mA)
60
T
A
= 25°C
I
K
= 10 mA
40
2.610
20
2.600
2.590
0
2.580
0
20
40
60
80
100
−20
−1.0
0
1.0
2.0
3.0
V
KA
, CATHODE VOLTAGE (V)
T
A
, AMBIENT TEMPERATURE (°C)
Figure 2. Reference Cathode Current
vs. Cathode Voltage
Figure 3. Reference Voltage
vs. Ambient Temperature
0.4
|Z
KA
|, DYNAMIC IMPEDANCE (W)
I
K
, CATHODE CURRENT (mA)
I
K
= 1.0 mA to 60 mA
0.35
10
T
A
= 25°C
Stable
6.0
Unstable
Stable
2.0
8.0
0.3
4.0
0.25
0.2
0
50
100
T
A
, AMBIENT TEMPERATURE (°C)
0
100 pF
1000 pF
1.0
mF
10
mF
100
mF
C
L
, LOAD CAPACITANCE
Figure 4. Reference Dynamic Impedance
vs. Ambient Temperature
0
I
IB
, INPUT BIAS CURRENT (nA)
V
CC
= 5.0 V
0.5
Op−Amp 2
Figure 5. Reference Stability
vs. Load Capacitance
1.0
V
O
, INPUT OFFSET VOLTAGE (mV)
V
CC
= 5.0 V
−5.0
−10
0
Op−Amp 1
−15
Op−Amp 2
Op−Amp 1
−0.5
−20
−1.0
0
20
40
60
80
100
T
A
, AMBIENT TEMPERATURE (°C)
−25
0
20
40
60
80
100
T
A
, AMBIENT TEMPERATURE (°C)
Figure 6. Input Offset Voltage
vs. Ambient Temperature
Figure 7. Input Bias Current
vs. Ambient Temperature
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4
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