Arques Technology Debuts AQ9156 Regulator

Arques Technology (Austin, TX) introduced its new AQ9156, a 1.5X switched-capacitor (charge pump) regulator, suitable for white LED applications. The output is a regulated 4.5 V, up to 120 mA, and capable of driving up to six parallel white LEDs, with a typical operating input-voltage range from 3 V to 6 V.

The AQ9156 features a 1.5X charge-pump circuit that uses two ceramic bucket capacitors and two small filter capacitors for Vin and Vout, allowing a low-profile system design. The AQ9156 offers a selectable switching frequency of 8 kHz, 32 kHz, 262 kHz or 650 kHz. The AQ9156 also offers a priority design architecture (patent pending) that maintains an efficiency of >80 percent. The output voltage is regulated to 4.5 V, ±5 percent over the line and load ranges, with low output ripple voltage. Internal over-temperature and over-current management provides short-circuit protection.

The AQ9156 is available in a small MLP-10 or MSOP-10 package. Pricing is $0.98 for 1,000-piece quantities. Evaluation parts available.