Advanced Analog Circuits
Data Sheet
AP4301
DUAL OPAMP AND VOLTAGE REFERENCE
General Description
The AP4301 is a monolithic IC specifically designed
to control the output current and voltage levels of
switch mode battery chargers and power supplies.
The device contains two operational amplifiers and a
precision shunt regulator. OPAMP 1 is designed for
voltage control, whose non-inverting input internally
connects to the ouput of the shunt regulator. OPAMP 2
is for current control with both inputs uncommitted.
The IC offers the power converter designer a control
solution that features increased precision with a corre-
sponding reduction in system complexity and cost.
Features
·
·
·
·
·
·
·
·
·
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
Fixed output voltage reference: 1.25V, 1.24V
Voltage tolerance: 0.5%, 1%
Sink current capability from 0.1 to 80mA
Package types: DIP-8 and SOIC-8
Applications
·
·
Battery charger
Switch mode power supply
SOIC-8
DIP-8
Figure 1. Package Types of AP4301
March, 2003
1
Rev.1.0
Advanced Analog Circuits
Data Sheet
AP4301
DUAL OPAMP AND VOLTAGE REFERENCE
Functional Block Diagram (Continued)
V
CC
6uA
4uA
100uA
-
INPUTS
+
Rsc
OUTPUT
50µA
10µA
GND
Figure 4. OPAMP Functional Block Diagram
(Each Amplifier)
V
KA
20µA
20µA
GND
Figure 5. Voltage Reference Functional Block Diagram
March, 2003
3
Rev.1.0
Advanced Analog Circuits
Data Sheet
AP4301
DUAL OPAMP AND VOLTAGE REFERENCE
Absolute Maximum Ratings
Parameter
Power Supply Voltage (V
CC
to GND)
OPAMP 1 and 2 Input Voltage Range (Pins 2, 5, 6)
OPAMP 2 Input Differential Voltage (Pins 5, 6)
Voltage Reference Cathode Current (Pin 3)
Power Dissipation
Symbol
V
CC
V
IN
V
ID
I
K
P
D
T
STG
-
DIP-8
SOIC-8
Storage Temperature Range
ESD Protection Voltage (Machine Model)
Value
20
- 0.3 to V
CC
- 0.3
20
100
800
500
-65 to 150
≥
200
Unit
V
V
V
mA
mW
o
C
V
Note: 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 Operation Ratings " is not implied. Exposure to "Absolute Maximum Rat-
ings " for extended periods may affect device reliability.
Recommended Operating Ratings
Parameter
Supply Voltage
Ambient Temperature
Min
3
-40
Max
18
85
o
Unit
V
C
March, 2003
5
Rev.1.0
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