Date: 19/04/2012

Buck DC-DC regulator from ADI for portable electronics with 3 external components

Analog Devices has introduced the ADP2370/71 15-V, 800-mA output DC to DC regulator optimized for better energy efficiencies in battery-powered applications using multiple alkaline/NiMH, lithium cells, or other standard power sources.

The DC-DC regulator requires just three external components. The ADP2370/71 offer greater than 93 percent conversion efficiency. During light load conditions, the ADP2370/71 can be configured to automatically switch to a low-quiescent power-save mode for additional battery life savings. The ADP2371 offers a quick output discharge feature to ensure that the output bypass capacitors are completely discharged so that the processor can wake up in a known state. The switching frequency of these regulators can be synchronized to an external clock to eliminate beat frequencies between regulators.

Other features of ADP2370/71 DC-to-DC regulator:

Wide input voltage range up of 3.2 V to 15 V

Output voltage is adjustable from 0.8 V to input voltage (capable of 100 percent duty cycle operation). Fixed output voltage options are also available: 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V and 5 V.

Low Iq <14 µA in power saving mode (PSM)

Synchronization input to minimize input ripple current and reduce input filter design

Internal compensation and soft start

Operate over the -40°C to +125°C junction temperature range

Available in 3×3 mm QFN-8 lead package

Availability: Now in samples

Pricing (Each @ 1k units):
ADP2370: $1.40
ADP2371: $1.40