ISL6226 is an advanced PWM and linear power controller for portable applications from Intersil (Onsemi). ISL6226 integrates a fixed, selectable frequency pulse-width-modulation (PWM) controller and a 3A LDO linear regulator controller with monitoring and protection circuitry in a single 24 lead SSOP. The PWM controller regulates the battery input voltage to a user selected output voltage. Light load synchronous converter and hysteretic operation contribute to a high efficiency over a wide range of input voltage and load variation. Efficiency can be further enhanced by using the lower MOSFET’s rDS(ON) as the current sense element. Input voltage feed-forward ramp modulation, current-mode control, and internal feed-back compensation provide fast and stable handling of input voltage load transients encountered in advanced portable computer chip sets. The internal linear regulator controller provides a user selected high current output from an unregulated input with user selected current limit.
The ISL6226 data sheet describes an advanced PWM and linear power controller designed for high‑performance notebook PC and other portable devices. It integrates a selectable‑frequency PWM buck converter with a 3 A LDO linear regulator in a single 24‑lead SSOP package.
Key features include dual regulated outputs, synchronous buck conversion, hysteretic light‑load operation, selectable 300 kHz/600 kHz switching frequency, and a wide input voltage range of 5.6 V to 24 V. The document also provides detailed pin descriptions, thermal and electrical specifications, layout guidelines, and package dimensions.
| Input voltage range | 5.6 V to 24 V |
|---|---|
| LDO output voltage range | 0.8 V to 3.8 V |
| LDO output current capability | 3 A |
| PWM switching frequency | 300 kHz or 600 kHz (selectable) |
| Package type | 24‑lead SSOP |
| Ambient temperature range | -10 °C to 85 °C |
| Maximum junction temperature | 150 °C |
The device operates with an input voltage from 5.6 V up to 24 V.
The ISL6226 is supplied in a 24‑lead SSOP package, giving it 24 pins.
The controller offers selectable switching frequencies of 300 kHz or 600 kHz.