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IK3051A

IK Semicon
Part Number IK3051A
Manufacturer IK Semicon
Description Constant Voltage and Constant Current Controller
Published May 14, 2010
Detailed Description TECHNICAL DATA Constant Voltage and Constant Current Controller for Adaptors and Battery Chargers Description IK3051A i...
Datasheet PDF File IK3051A PDF File

IK3051A
IK3051A

Overview
TECHNICAL DATA Constant Voltage and Constant Current Controller for Adaptors and Battery Chargers Description IK3051A is a highly integrated solution for SMPS applications requiring constant voltage and constant current mode.
IK3051A integrates one voltage reference, two operational amplifiers (with ORed outputs – common collectors), and a current sensing circuit.
The voltage reference combined with one operational amplifier makes it an ideal voltage controller, and the other low voltage reference combined with the other www.
DataSheet4U.
com operational amplifier makes it an ideal current limiter for output low side current sensing.
The current threshold is fixed and precise.
The only external components are: • A resistor bridge to be connected to the output of the power supply (adapter, battery charger) to set the voltage regulation by dividing the desired output voltage to match the internal voltage reference value.
• A sense resistor having a value and allowable dissipation power which need to be chosen according to the internal voltage threshold.
• Optional compensation components (R and C).
IK3051A, is ideal for smallest package available, is ideal for space shrinked applications such as adapters and battery chargers.
Features • CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROL • LOW VOLTAGE OPERATION • PRECISION INTERNAL COMPONENT COUNT • CURRENT SINK OUTPUT STAGE • EASY COMPENSATION • LOW AC MAINS VOLTAGE REJECTION Pin Definitions and Functions SOT23-6 Pinout Name Pin# Type Vcc 6 Power Supply GND 2 Power Supply Vctrl 1 Analog Input Ictrl 4 Analog Input Out 3 Current Sink Output Vsense 5 Analog Input IK3051A Function Positive Power Supply Line Ground Line.
0V Reference For All Voltages Input Pin of the Voltage Control Loop Input Pin of the Current Control Loop Output Pin.
Sinking Current Only Input Pin of the Current Control Loop Rev.
00 IK3051A Absolute Maximum Ratings Symbol Vcc Vi Top Tj Parameter DC Supply Voltage Input Voltage Operating Free Air Temperat...


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