XL4310

XL4310 SOP8 Description Pin Assignments The XL4310 is a monolithic IC specifically designed to regulate the output current and voltage levels of switching battery chargers and power supplies (Top View) 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. OUTPUT 1 1 8 VCC INPUT 1- 2 7 OUTPUT 2 INPUT 1+/VKA 3 6 INPUT 2- GND 4 5 INPUT 2+ Features OP Amp      SO-8 Input Offset Voltage: 0.5mV Supply Current: 75A 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 Applications   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 Battery Charger Switching Power Supply Typical Applications Circuit R1 Opto Isolator R6 - AC Line Battery Pack Op Amp 2 SMPS + R3 R4 Current R2 Sense R7 R5 Op Amp 1 VREF + R8 XL4310 Application of XL4310 in a Constant Current and Constant Voltage Charger 1 XL4310 SOP8 OUTPUT 1 1 INPUT 1- 2 INPUT 1+/VKA 3 - VCC 8 Op Amp 1 + 7 OUTPUT 2 6 INPUT 2- 5 INPUT 2+ - + Op Amp 2 GND 4 VREF Absolute Maximum Ratings (Note 1) Parameter Symbol VCC Power Supply Voltage (VCC to GND) Unit 40 V -0.3 to VCC+0.3 V Op Amp 2 Input Differential Voltage (Pins 5, 6) 40 V IK Voltage Reference Cathode Current (Pin 3) 100 mA PD Power Dissipation (TA = +25°C) 500 mW TJ Operating Junction Temperature VIN VID Op Amp1 and 2 Input Voltage Range (Pins 2, 5, 6) Rating +150 C -65 to +150 C Lead Temperature (Soldering 10sec) +260 C ESD (Human Body Model) ≥2000 V TSTG Storage Temperature Range TLEAD ESD 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 Maximum Ratings” for extended periods may affect device reliability. Recommended Operating Conditions Parameter Supply Voltage Ambient Temperature 2 Min Max Unit 3 36 V -40 +105 C XL4310 SOP8 Electrical Characteristics (@VCC=5V, TA=+25C, unless otherwise specified.) Parameters Total Supply Current, excluding Current in Voltage Reference Conditions Min Typ Max VCC=5V, no load, -40°C ≤ TA ≤ +105°C – 0.15 0.25 VCC=30V, no load, -40°C ≤ TA ≤ +105°C – 0.20 0.30 TA = +25°C 2.49 2.50 2.51 -40°C ≤ TA ≤ +105°C 2.48 2.50 2.52 Unit mA Voltage Reference Section Reference Voltage IK=10mA V Reference Voltage Deviation over Full Temperature Range IK=10mA, TA= -40°C to +105°C – 5 24 mV Minimum Cathode Current for Regulation – – 0.01 0.05 mA Dynamic Impedance IK=1mA to 80mA, f