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Data Sheet DUAL OP AMP AND VOLTAGE REFERENCE General Description
The AP4300 is a monolithic IC specifically designed to regulate the output current and voltage levels of switching battery chargers and power supplies. The device contains two operational amplifiers and a precision shunt regulator. Op Amp 1 is designed for voltage control, whose non-inverting input internally connects to the output of the shunt regulator. Op Amp 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 corresponding reduction in system complexity and cost. The AP4300 is available in standard packages of DIP8 and SOIC-8.
AP4300
Features
Op Amp · Input Offset Voltage: 0.5mV · Supply Current: 250µA per Op Amp at 5.0V Supply Voltage · Unity Gain Bandwidth: 1MHz · Output Voltage Swing: 0 to (VCC-1.5) V · Power Supply Range: 3 to 18V
Voltage Reference · Fixed Output Voltage Reference: 2.5V, 2.6V · Voltage Tolerance: 0.5%, 1% · Sink Current Capability from 0.1 to 80mA
Applications
· · Battery Charger Switching Power Supply
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SOIC-8
DIP-8
Figure 1. Package Types of AP4300
Jul. 2006 Rev. 1. 3 1
BCD Semiconductor Manufacturing Limited
Data Sheet DUAL OP AMP AND VOLTAGE REFERENCE Pin Configuration AP4300
M Package/P Package
(SOIC-8/DIP-8)
OUTPUT 1 INPUT 1INPUT 1+/VKA GND
1 2 3 4
8 7 6 5
VCC OUTPUT 2 INPUT 2INPUT 2+
Top View Figure 2. Pin Configuration of AP4300
Functional Block Diagram
OUTPUT 1
1
8
VCC
2 INPUT 1
+ 7 OUTPUT 2
+ 3
6 INPUT 2
GND
4
5
Figure 3. Functional Block Diagram of AP4300
Jul. 2006 Rev. 1. 3 2
BCD Semiconductor Manufacturing Limited
Data Sheet DUAL OP AMP AND VOLTAGE REFERENCE Functional Block Diagram (Continued)
VCC
AP4300
6µ A
4µA
100µA
Q5 Q6 Q2 INPUTQ1 Q3 Q4 Rsc OUTPUT INPUT+ Q11 Q10 Q8 Q9 Q12 50µA Q13 Cc Q7
Figure 4. Op Amp Functional Block Diagram (Each Amplifier)
VKA 20µA 20µA
GND
Figure 5. Voltage Reference Functional Block Diagram
Jul. 2006 Rev. 1. 3 3
BCD Semiconductor Manufacturing Limited
Data Sheet DUAL OP AMP AND VOLTAGE REFERENCE Ordering Information
AP4300 Circuit Type Voltage Tolerance A: 0.5% B: 1% Package M: SOIC-8 P: DIP-8 E1: Lead Free
AP4300
Blank: Tin Lead
TR: Tape and Reel
Blank: Tube Output Voltage Reference A: 2.6V B: 2.5V
Package
Reference Voltage 2.6V
Voltage Tolerance 0.5% 1% 0.5% 1% 0.5%
Temperature Range
Part Number Tin Lead AP4300AP-A Lead Free AP4300AP-AE1 AP4300BP-AE1 AP4300AP-BE1 AP4300BP-BE1 AP4300AM-AE1
Marking ID Tin Lead AP4300AP-A AP4300BP-A AP4300AP-B AP4300BP-B Lead Free AP4300AP-AE1 AP4300BP-AE1 AP4300AP-BE1 AP4300BP-BE1
Packing Type
DIP-8 2.5V
-40 to 105oC
AP4300BP-A AP4300AP-B AP4300BP-B AP4300AM-A
Tube
AP4300AM-A AP4300AM-AE1
Tube Tape & Reel Tube Tape & Reel Tube Tape & Reel Tube Tape & Reel
AP4300AM-ATR AP4300AM-ATRE1 AP4300AM-A AP4300AM-AE1 AP4300BM-A AP4300BM-AE1 AP4300BM-A AP4300BM-AE1
2.6V 1% SOIC-8 0.5% 2.5V 1% -40 to 105oC
AP430.