Fairchild Semiconductor ABR-42022
This Application Brief exists as a supplement to Application Note 63. When used with Application Note 63, this document contains all the necessary information to convert an ML4833 Evaluation Board into a low-cost, non-dimming 220V ballast.| Part No. | ABR-42022 |
|---|---|
| Datasheet | ABR-42022 Download |
| Manufacturer |  Fairchild Semiconductor |
| Description | ML4833 220V Non-Dimming Ballast Design |
| Buy | Stock & Price |
GENERAL DESCRIPTION
This power factor corrected, 60W non-dimming ballast operates over a 187 to 253VRMS line, and is designed to power two series connected F32T8 lamps. The design preserves the features of the dimming ballast, which include:●
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● 0.99 minimum power factor Less than 10% THD Programmable starting sequence for low glow current and extended lamp life Greater than 92% efficiency All American On-chip thermal and lamp out detection circuitry Capsco Power down threshold for GFI or end of lamp life protection Future Active Inc. Digi-Key Corp. Premier Magnetics (800) 538-8587 (800) 723-5817, (408) 434-9599 (800) 344-4539 (714) 362-4211 (800) 222-6001 Shaded items in Table 1 indicate changes to the original ML4833 Evaluation Board parts list. VENDOR LIST CONVERSION To convert the ML4833 Evaluation Board to the nondimming design described: 1. 2. 3. 4. Remove the dimmer control interface subassembly. Remove components R2,R3, R16, C4, C5 and T5 (as shown in Figure 2). Ground LAMP FB.
