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Technical content
High Precision Buck LED Driver Tel: 886-66296288‧Fax: 886-29174598‧http://www.princeton.com.tw‧2F, 233-1, Baociao Road, SindianDist.,New Taipei City 23145, Taiwan
DESCRIPTION
The PT6984A is a non-isolated buck and applicable to 85V AC ~ 265V AC input voltage rangefor LED lighting. The PT6984A integrates high precision current detection and constant current circuit , realizes high precision LED constant current and excellent line voltage regulation. The PT6984A works in CRM mode , the LED current is constant with inductance and LED output voltage change, good load regulation。 The PT6984A integrates a 500V power MOSFET , uses the source driver architecture , with a low operating current, so the PT6984A doesn’t need the auxiliary winding for sensing the output current and supplying the chip. It has a few external components, saves the cost and volume system. The multi-protection features of PT6984A greatly enhance the system reliability and safety. The PT6984A provides CS resistance short-circuit protection , short LED protection, open LED protection, VIN under voltage protection, temperature intelligent control, etc.
FEATURES
Integrates 500V Power MOSFET CRM Mode No Auxiliary Winding for Sensing and Supplying Low Operating Current Universal Input Voltage Range ±5% Output Current Accuracy LED Open/Short Circuit Protection VIN Under Voltage Protection CS Resistor Short Circuit Protection Temperature Intelligent Control System Auto-Restart Function SOP-8 Package
APPLICATIONS
LED Bulb lamp, LED PAR lamp LED Tube lamp Other LED lighting BLOCK DIAGRAM
V1.1 2 February 2016 TYPICAL APPLICATION
V1.1 3 February 2016 ORDER INFORMATION Valid Part Number Package Type Top Code PT6984A-S 8-Pin, SOP PT6984A-S PT6984A-D 8-Pin, DIP PT6984A_D PIN CONFIGURATION PIN DESCRIPTION Pin Name Description Pin No. GND Ground 1 SET LED open-circuit voltage protection Settings, by connecting the resistance to the ground 2 NC No connection 3 VIN Power supply pin 4 DRN Power MOSFET Drain 5, 6 CS Current sense pin, sense the inductor current while the switch is on-state. 7, 8
V1.1 10 February 2016 IMPORTANT NOTICE Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and to discontinue any product without notice at any time. PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No circuit patent licenses are implied. Princeton Technology Corp. 2F, 233-1, Baociao Road, Sindian Dist., New Taipei City 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw