This document is the user manual of IR2159/IR21591 controller, which introduces the features of the controller, including transformer-less lamp power sensing, closed-loop lamp power control, closed-loop preheat current control, programmable preheat time, programmable preheat current, programmable ignition-to-dim time, 0.5 to 5VDC dimming control input, min and max lamp power adjustments, programmable minimum frequency, internal current sense blanking and full lamp fault protection.
The IR2159 and IR21591 are dimming ballast controller and half‑bridge driver ICs that integrate lamp power sensing, closed‑loop control and a range of programmable features such as preheat time, ignition‑to‑dim time and lamp power limits. They are offered in 16‑lead DIP and 16‑lead narrow‑body SOIC packages.
The document provides absolute maximum ratings, recommended operating conditions, detailed electrical characteristics, pin definitions, state and timing diagrams, as well as mechanical dimensions for both package types.
| Maximum lamp power setting pin input voltage (Vax) | -0.3 V to 5.5 V |
|---|---|
| Deadtime range | 1.8 µs to 41.0 µs |
| Package power dissipation (16‑pin DIP, Ta < +25 °C) | 1.60 W |
| Maximum operating temperature (Tj) | 150 °C |
| VCC supply undervoltage positive‑going threshold (typical) | 12.5 V |
The Vax pin can be driven between –0.3 V and 5.5 V.
Deadtime can be programmed from 1.8 µs up to 41.0 µs.
Both 16‑lead DIP and 16‑lead narrow‑body SOIC packages are offered.
The DIP package can dissipate up to 1.60 W at an ambient temperature below +25 °C.