 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Preliminary PT6909 Power Factor Correction LED Driver DESCRIPTION PT6909 is a fixed frequency PWM controller IC designed to control high brightness LED driver using a single-stage PFC boost-buck topology. It can achieve a well power factor and a higher dc-bus voltage. This topology allows reducing the filter capacitors and using non-electrolytic capacitors to improve reliability. The PT6909 uses open-loop peak current control technique eliminates a need for loop compensation, limits the input inrush current, and is inherently protected from input under-voltage condition. PT6909 provides a low frequency PWM dimming input that can accept an external control signal with a duty cycle of 0-100% and a frequency of between 100Hz and a few KHz. The PWM dimming capability enables PT6909 phase control solutions that can work with standard TRIAC. FEATURES * * * * * * * * Simple Power factor Correction Integrated Low Start-up Current 8V to 12V Input Range Constant -Current Driver Programmable Fixed Frequency Operation Input and Output Current Sensing Input Current Limit Boost Circuit Over-Voltage Protection(LED Open Protection) * Input Voltage Limitation * Low Input Current Harmonic Distortion * PWM Low-Frequency Dimming and Phase Dimming Compatible APPLICATIONS * * * * * LED Replacement Tube AC/DC LED Driver LED Lamp with Phase Dimmable Street lamps Traffic signals BLOCK DIAGRAM Tel: 886-66296288Fax: 886-29174598 http://www.princeton.com.tw2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan PT6909 TYPICAL APPLICATION PRE1.4 2 October 2009 PT6909 ORDER INFORMATION Valid Part Number PT6909-S Package Type 8 Pins, SOP, 150MIL Top Code PT6909-S PIN CONFIGURATION PIN DESCRIPTION Pin Name CS1 GND GD VIN PWMD OVP CS2 RF Description Input or Output Current Sense Ground Drives the Gate of External MOSFET Input Voltage 8V-12V DC Low Frequency PWM Dimming pin, also Enable pin Over Voltage Detection Input or Output Current Sense Oscillator Frequency Setting Pin No. 1 2 3 4 5 6 7 8 PRE1.4 3 October 2009 PT6909 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, Taipei 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw PRE1.4 4 October 2009 |
Price & Availability of PT6909-S
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |