Data Sheet
QUAD OP AMP AND VOLTAGE REFERENCE
General Description
The AP4303 is a monolithic IC that contains quad
operational amplifiers and a precision shunt regulator,
1.25Vfor AP4303-C or 1.24V for AP4303-D respec-
tively. It is specifically designed to regulate the output
current and voltage levels of switching battery charg-
ers and power supplies.
The four Op Amps feature accurate voltage and current
control. Combining a stable voltage reference with the
four Op Amps makes AP4303 ideal for use in multi-
function charger, power supply voltage monitor, signal
processing and control system.
The IC offers the power converter designer a control
solution that features increased precision with a corre-
sponding reduction in system complexity and cost.
The AP4303 is available in standard packages of DIP-
16 and SOIC-16.
AP4303
Features
Op Amp
·
Input Offset Voltage: 0.5mV
·
Supply Current: 250µA per Op Amp at 5.0V Sup-
ply Voltage
·
Unity Gain Bandwidth: 1MHz
·
Output Voltage Swing: 0 to (V
CC
- 1.5)V
·
Power Supply Range: 3 to 18V
Voltage Reference
·
Reference Voltage Tolerance: 0.5%, 1%
·
Sink Current Capability from 0.1 to 80mA
·
Output Dynamic Impedance: 0.2Ω
·
Externally Adjusted Output Voltage Reference:
1.25V for AP4303-C and 1.24V for AP4303-D
Applications
·
·
Battery Charger
Switching Power Supply
SOIC-16
DIP-16
Figure 1. Package Types of AP4303
Apr. 2005 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data Sheet
QUAD OP AMP AND VOLTAGE REFERENCE
Pin Configuration
M Package/P Package
(SOIC-16/DIP-16)
OUTPUT 1
INPUT 1-
INPUT 1+
V
CC
INPUT 2+
INPUT 2-
OUTPUT 2
V
REF
AP4303
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Top View
OUTPUT 4
INPUT 4-
INPUT 4+
GND
INPUT 3+
INPUT 3-
OUTPUT 3
CATHODE
Figure 2. Pin configuration of AP4303
Functional Block Diagram
OUTPUT 1
1
2
16
15
OUTPUT 4
INPUT 1-
INPUT 4-
-
INPUT 1+
+
+
-
14
13
12
INPUT 4+
3
4
5
6
V
CC
GND
INPUT 2+
INPUT 3+
-
+
+
-
11
10
9
INPUT 3-
INPUT 2-
OUTPUT 2
7
8
OUTPUT 3
V
REF
CATHODE
Figure 3. Functional Block Diagram of AP4303
Apr. 2005 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data Sheet
QUAD OP AMP AND VOLTAGE REFERENCE
Functional Block Diagram (Continued)
V
CC
AP4303
6µA
4µA
100µA
Q5
Q6
Q2
INPUT-
Q1
Q3
Q4
Rsc
OUTPUT
INPUT+
Q11
Q10
Q8
Q9
Q12
50uA
Q13
Cc
Q7
Figure 4. Op Amp Functional Block Diagram
(Each Amplifier)
CATHODE
20µA
20µA
V
REF
GND
Figure 5. Voltage Reference Functional Block Diagram
Apr. 2005 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data Sheet
QUAD OP AMP AND VOLTAGE REFERENCE
Ordering Information
AP4303
Circuit Type
Voltage Tolerance
A: 0.5%
B: 1%
Package
M: SOIC-16
P: DIP-16
-
E1: Lead Free
Blank: Tin Lead
TR: Tape and Reel
Blank: Tube
Output Voltage Reference
C: 1.25V
D: 1.24V
AP4303
Package
Reference Voltage
Voltage Tolerance
1.25V
0.5%
1%
0.5%
1%
0.5%
1.25V
1%
Tempera-
ture Range
Part Number
Tin Lead
AP4303AP-C
Lead Free
AP4303AP-CE1
AP4303BP-CE1
AP4303AP-DE1
AP4303BP-DE1
AP4303AM-CE1
Marking ID
Tin Lead
AP4303AP-C
AP4303BP-C
AP4303AP-D
AP4303BP-D
Lead Free
AP4303AP-CE1
AP4303BP-CE1
AP4303AP-DE1
AP4303BP-DE1
Packing
Type
DIP-16
1.24V
-40 to 85
o
C
AP4303BP-C
AP4303AP-D
AP4303BP-D
AP4303AM-C
Tube
AP4303AM-C AP4303AM-CE1
Tube
Tape &
Reel
Tube
Tape &
Reel
Tube
Tape &
Reel
Tube
Tape &
Reel
AP4303AM-CTR AP4303AM-CTRE1 AP4303AM-C AP4303AM-CE1
AP4303BM-C
-40 to 85
o
C
AP4303BM-CE1
AP4303BM-C AP4303BM-CE1
AP4303BM-CTR AP4303BM-CTRE1 AP4303BM-C AP4303BM-CE1
AP4303AM-D
AP4303AM-DE1
AP4303AM-D AP4303AM-DE1
SOIC-16
0.5%
1.24V
1%
AP4303AM-DTR AP4303AM-DTRE1 AP4303AM-D AP4303AM-DE1
AP4303BM-D
AP4303BM-DE1
AP4303BM-D AP4303BM-DE1
AP4303BM-DTR AP4303BM-DTRE1 AP4303BM-D AP4303BM-DE1
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Apr. 2005 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data Sheet
QUAD OP AMP AND VOLTAGE REFERENCE
Absolute Maximum Ratings (Note 1)
Parameter
Power Supply Voltage (V
CC
to GND)
Op Amp Input Voltage Range
Op Amp Input Differentials Voltage
Voltage Reference Cathode Current (Pin 9)
Power Dissipation
DIP-16
SOIC-16
Storage Temperature Range
ESD Protection Voltage (Machine Model)
T
STG
Symbol
V
CC
V
IN
V
ID
I
K
P
D
Value
20
-0.3 to V
CC
+ 0.3
20
100
1000
1000
-65 to 150
>200
o
AP4303
Unit
V
V
V
mA
mW
C
V
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings " may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Max-
imum Ratings " for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Supply Voltage
Ambient Temperature
Min
3
-40
Max
18
85
Unit
V
o
C
Apr. 2005 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Embedded System
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