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PT5622 Three-level (On/Off) Ballast Controller
DESCRIPTION
The PT5622 is an electronic ballast controller IC intended for dimming product with ordinary switch. The features of the controller IC include negative-feedback closed-loop control of the lamp current, programmable preheat time and preheat frequency, low start-up current, precise oscillating frequency and easy applications. PT5622 is available in both DIP16/SOP16 packages.
FEATURES
* Electronic ballast IC with dimming function using ordinary switches * Integrated MCU * Negative-feedback control of the lamp current, supporting low luminance ignition * 2/3-level selection available for low to high or high to low luminance dimming mode * Programmable preheat time * Programmable preheat frequency, sweeping frequency ignition * Programmable delay time from switch-off to reset state * Programmable delay time from switch-on to preheat mode * Fixed dead time * Supporting DIP16/SOP16 packages
APPLICATION
* Adjustable to various types of fluorescent lamps/CFLs
BLOCK DIAGRAM
Tel: 886-66296288Fax: 886-29174598 http://www.princeton.com.tw2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PT5622
APPLICATION CIRCUIT
AC: 120V, OUTPUT POWER 15W/7W/3W
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PT5622
ORDER INFORMATION
Valid Part Number PT5622-D-001 PT5622-D-002 PT5622-D-003 PT5622-D-004 PT5622-S-001 PT5622-S-002 PT5622-S-003 PT5622-S-004 Package Type 16 Pins, DIP, 300mil 16 Pins, DIP, 300mil 16 Pins, DIP, 300mil 16 Pins, DIP, 300mil 16 Pins, SOP, 150mil 16 Pins, SOP, 150mil 16 Pins, SOP, 150mil 16 Pins, SOP, 150mil Top Code PT5622-D-001 PT5622-D-002 PT5622-D-003 PT5622-D-004 PT5622-S-001 PT5622-S-002 PT5622-S-003 PT5622-S-004
PIN CONFIGURATION
PIN CONFIGURATION
Pin Name GND VREG1 RF RP CP SW2, SW1 DIM IL CT RT DL ACDET LO VDD HO V1.0 Description Ground Standby power supply for internal MCU when the AC power supply is switched off Internal reference current bias setting pin, its voltage is fixed at 3.2V. An external resistor is connected from this pin to GND to determine the internal reference current, typical value is 68K Preheat frequency setting pin, its output current is 29A. An external resistor is connected to this pin and introduce a voltage for VCO Preheat time and sweeping frequency ignition setting pin 3-level dimming setting pin, different states of SW2 and SW1 leads to change output voltage of external resistive divider, and this voltage is introduced to the input of the dimming pin DIM. Dimming input pin. Accept the output voltage of external resistive divider Lamp current sampling pin An external capacitor is connected to this pin to determine oscillating frequency An external resistor is connected to this pin to determine oscillating frequency Switch delay time setting pin. A capacitor is connected to this pin. When an AC input is detected by ACDET pin, 0.6A current is charged to the capacitor. If the AC input is not switched-off before the capacitor reaching 3.8V, the system enters preheat mode AC input detection pin, used for detecting the switch state and on-off times of AC input Low-side gate driver output Power supply, operating voltage is 13V High-side gate driver output Pin No. 1 2 3 4 5 6, 7 8 9 10 11 12 13 14 15 16 3
PT5622 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
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