L6520TR STMicroelectronics, L6520TR Datasheet
L6520TR
Specifications of L6520TR
Related parts for L6520TR
L6520TR Summary of contents
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... Programmable without capacitors Figure 1. Block diagram March 2011 Applications ■ Electronic ballasts (TL, Industrial CFL) ■ Integrated CFLs Table 1. Device summary Order codes L6520 L6520TR L6521 L6521TR Doc ID 16998 Rev 3 L6520 L6521 SO8 Package Packaging Tube Tape and reel SO8 Tube Tape and reel 1/19 www ...
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Contents Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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... Depending on the power of the lamp, the IC can work without PFC, with passive PFC or with active PFC. In the latter case the L6562A from STMicroelectronics is the suggested IC for the most cost effective solution. The IC is fully programmable using only resistors and offers over current protections, choke saturation control and hard switching protection thanks to a sophisticated current control circuit (CCC) ...
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Pin connection 2 Pin connection Figure 2. Pin connection Table 2. Pin description Symbol Pin FPRE 1 EOL 2 HBCS 3 PWM_det 4 GND 5 LSD 6 HSD 7 VCC 8 4/19 Description Preheating frequency programming and ignition modes selection ...
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L6520, L6521 3 Maximum ratings Table 3. Absolute maximum ratings Symbol Pin Parameter V 8 Active clamp protection voltage Active clamp protection current VCC Differential voltage between V 6,7 OD1 driver output and V Differential voltage between ...
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Electrical characteristics 4 Electrical characteristics -25 ° °C, unless otherwise specified CC A Table 5. Electrical characteristics Symbol Pin Supply voltage V VCC Operating range CC V VCC Turn-on threshold CC(ON) V ...
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L6520, L6521 Table 5. Electrical characteristics (continued) Symbol Pin V HSD LSD Output high voltage OH I HSD LSD Peak source current SRC I HSD LSD Peak sink current SNK T HSD LSD Rise time RISE T HSD LSD Fall ...
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Electrical characteristics Table 5. Electrical characteristics (continued) Symbol Pin Leading edge time after LSD t HBCS LEB turn on End of life EOL pin biasing voltage V EOL EOL reference V EOL EOL upper threshold EOL_H V EOL EOL lower ...
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L6520, L6521 5 Functions description 5.1 Start-up During the first start-up ramp of the supply voltage (V are low impedance to ground (Isink 20 mA min). Once the V the IC starts its operation. During the first 100 µs the ...
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Functions description 5.3 Ignition During the ignition sequence the output frequency ramps down from the programmed preheating frequency to the fixed run frequency with a fixed rate df the instant start is selected, the frequency ramps down from 85 kHz ...
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L6520, L6521 5.6 Current control circuit (CCC) The current control circuit (CCC sophisticated circuit able to protect the ballast against any possible failure. It limits the maximum lamp voltage during ignition (OCPH), overcurrent protection (OCPL) during run mode, ...
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Functions description 5.6.4 Choke saturation control (CSC) during ignition and run mode The same thresholds used to detect OCPH and OCPL are active. The control is still based on the time between two consecutive thresholds but its behavior is different ...
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L6520, L6521 5.8 Summary of protections Figure 3. Summary of protections Table 7. Table of faults Active during Fault PH Ign Run Minimum driving pulse duration Inductor saturation Hard switching Overcurrent End Of Life Condition Driving pulses shorter than 1 ...
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Typical electrical characteristics 6 Typical electrical characteristics Figure 4. VCC thresholds vs temperature - Temperature [ C] Figure 6. Times vs temperature 1.04 1.035 1.03 1.025 1.02 1.015 1.01 1.005 1 ...
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L6520, L6521 7 Application examples Figure 10. BJT application example Figure 11. MOSFET application example Doc ID 16998 Rev 3 Application examples 15/19 ...
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Package mechanical data 8 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available ...
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L6520, L6521 Figure 12. Package dimensions Doc ID 16998 Rev 3 Package mechanical data 17/19 ...
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Revision history 9 Revision history Table 9. Document revision history Date 19-Jan-2010 08-Feb-2011 09-Mar-2011 18/19 Revision 1 Initial release Added: L6521 option, 2 Updated: Coverpage, Table 7, Figure 10, Figure 11 3 Datasheet updated from preliminary data to final datasheet ...
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... L6520, L6521 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...