Document
A Product Line of Diodes Incorporated
AP4310A
DUAL OP AMP AND VOLTAGE REFERENCE
Description
The AP4310A 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 Op Amps and a 2.5V precision shunt voltage reference. Op Amp 1 is designed for voltage control with its noninverting input internally connected 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 AP4310A is available in SO-8 package.
Pin Assignments
(Top View)
OUTPUT 1 1 INPUT 1- 2
INPUT 1+/VKA 3 GND 4
8 VCC 7 OUTPUT 2 6 INPUT 25 INPUT 2+
Features
OP Amp Input Offset Voltage: 0.5mV Supply Current: 75A per OP Amp at 5.0V Supply Voltage Unity Gain Bandwidth:1MHz Output Voltage Swing: 0 to VCC-1.5V Power Supply Range: 3 to 36V
Voltage Reference Fixed Output Voltage Reference: 2.5V Reference Voltage Tolerance :±0.4% Sink Current Capability: 0.05 to 80mA Typical Output Impedance: 0.2Ω
Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3)
SO-8
Applications
Battery Charger Switching Power Supply
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
R1
Opto Isolator
AC Line
SMPS
R6
-
Op Amp 2
+
Battery Pack
R7
R3 R4 R5
Current Sense
R2
VREF AP4310A
-
Op Amp 1
+
R8
Application of AP4310A in a Constant Current and Constant Voltage Charger
AP4310A
Document number: DS36510 Rev. 2 - 2
1 of 8 www.diodes.com
September 2014
© Diodes Incorporated
Functional Block Diagram
A Product Line of Diodes Incorporated
AP4310A
OUTPUT 1 1 INPUT 1- 2
Op Amp 1
-+
8 VCC 7 OUTPUT 2
INPUT 1+/VKA 3 GND 4 VREF
+-
Op Amp 2
6 INPUT 25 INPUT 2+
Absolute Maximum Ratings (Note 4)
Symbol VCC VIN VID IK PD TJ TSTG TLEAD ESD
Parameter Power Supply Voltage (VCC to GND) Op Amp1 and 2 Input Voltage Range (Pins 2, 5, 6) Op Amp 2 Input Differential Voltage (Pins 5, 6) Voltage Reference Cathode Current (Pin 3) Power Dissipation (TA = +25°C) Operating Junction Temperature Storage Temperature Range Lead Temperature (Soldering 10sec) ESD (Human Body Model)
Rating 40
-0.3 to VCC+0.3 40 100 500
+150 -65 to +150
+260 ≥2000
Unit V V V mA
mW C C C V
Note 4: 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 Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Supply Voltage Ambient Temperature
Parameter
Min 3 -40
AP4310A
Document number: DS36510 Rev. 2 - 2
2 of 8 www.diodes.com
Max 36 +105
Unit V C
September 2014
© Diodes Incorporated
A Product Line of Diodes Incorporated
Electrical Characteristics (@VCC=5V, TA=+25C, unless otherwise specified.)
AP4310A
Parameters
Total Supply Current, excluding Current in Voltage Reference
Voltage Reference Section
Conditions VCC=5V, no load, -40°C ≤ TA ≤ +105°C VCC=30V, no load, -40°C ≤ TA ≤ +105°C
Reference Voltage
Reference Voltage Deviation over Full Temperature Range Minimum Cathode Current for Regulation
IK=10mA
TA = +25°C -40°C ≤ TA ≤ +105°C
IK=10mA, TA= -40°C to +105°C –
Dynamic Impedance
IK=1mA to 80mA, f<1kHz
Op Amp 1 Section (VCC = 5V, VO = 1.4V, TA = +25°C, unless otherwise noted.)
Input Offset Voltage
TA = +25°C TA = -40°C to +105°C
Input Offset Voltage Temperature Drift
TA = -40°C to +105°C
Input Bias Current (Inverting Input Only) TA = +25°C
Large Signal Voltage Gain
VCC = 15V, RL = 2kΩVO = 1.4V to 11.4V
Power Supply Rejection Ratio
VCC = 5V to 30V
Output Current
Source Sink
VCC = 15V, VID = 1VVO = 2V VCC = 15V, VID = -1VVO = 2V
Output Voltage Swing (High)
VCC = 30V, RL = 10kΩVID = 1V
Output Voltage Swing (Low) Slew Rate Unity Gain Bandwidth
VCC = 30V, RL = 10kΩVID = -1V VCC = 18V, RL = 2kΩAV = 1, VIN = 0.5V to 2V, CL = 100pF VCC = 30V, RL = 2kΩCL = 100pF
Op Amp 2 Section (VCC = 5V, VO = 1.4V, TA = +25°C, unless otherwise noted.)
Input Offset Voltage
TA = +25°C TA = -40°C to +105°C
Input Offset Voltage Temperature Drift
TA = -40°C to +105°C
Input Offset Current
TA = +25°C
Input Bias Current
TA = +25°C
Input Voltage Range
VCC = 0 to 36V
Common M.