Key facts
- Brand
- Philips
- Model
- NE556
- Category
- Other Electronics
- Industry
- Electronics
- Documents
- 3
- Languages
- EN
- Last added
- 2012-03-28
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Philips NE5565 Electronic Ballast Controller Circuit Datasheet
The NE5565 is a dual‑function electronic ballast controller IC designed for fluorescent lamp applications. It integrates a power‑factor correction (PFC) front‑end and a half‑bridge oscillator for lamp driving, offering selectable frequency modes, dimming support, and comprehensive protection features.
The datasheet provides detailed pin configurations, absolute maximum ratings, electrical characteristics, and typical application circuits, enabling designers to implement the IC in 2‑lamp dimming ballast designs and other lighting solutions.
Philips NE556 specifications
| Package | 20‑lead DIP (plastic dual‑in‑line) |
|---|---|
| Reference Output Voltage (Vref) | 7.42 V |
| Nominal VCC Voltage | 12.7 V |
| Minimum Supply Voltage | 9.3 V |
Source: Philips NE5565 Electronic Ballast Controller Circuit Datasheet
All Philips NE556 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the regulated reference voltage provided by the NE5565?
The NE5565 provides a regulated reference voltage of 7.42 V on the Vref pin.
From: Philips NE5565 Electronic Ballast Controller Circuit Datasheet
How many pins does the NE5565 have and what package type is used?
The IC comes in a 20‑lead dual‑in‑line (DIP20) plastic package.
From: Philips NE5565 Electronic Ballast Controller Circuit Datasheet
What does the over‑voltage protection circuit do?
It prevents the PFC DC output voltage from exceeding a preset value by turning off the OUTp output when the voltage at the OV pin is greater than the Vref voltage.
From: Philips NE5565 Electronic Ballast Controller Circuit Datasheet
What is the reference voltage used by the control logic?
The Vref pin provides a regulated 7.42 V reference.
From: Philips NE5565 Electronic Ballast Controller Circuit Datasheet