Switching chargers quickly, efficiently replenish Li-Ion batteries in mobile devices

austriamicrosystems released a pair of step-down DC-DCs that offers fast and highly efficient charging of Li-Ion batteries in mobile devices with up to 1.25A output current.

The AS3610/11 ICs include numerous safety and protection features, internal current measurement, and USB Host/OTG boost mode operation. The AS3610 DC-DC provides an I²C interface for external control and the AS3611 operates independently.

Applications include those that are powered by one Li-Ion battery, including high-end blood glucose meters, remote controls, GPS outdoor navigation or tracking equipment, mobile phones, e-dictionaries and e-book readers.

The AS3610/11 switching charger ICs were designed with inputs from the handset and portable markets to use a high efficiency switch mode charger with minimum ripple. Implementation is simplified with most options and features controlled by pin strapping or OTP (one time programmable) memory. These features include current limit set, charging current, OTG boost, and more. The AS3610 step-down DC-DC also supports 900mA input current limitation for USB 3.0. 

Key highlights:

• DC/DC USB Charger
• 1.25A, 3MHz DC/DC Charger
• OTG Boost with low IQ (700μA) up to 500mA
• 22V over voltage protection
• Seamless 100% Mode
• Reverse Polarity protection on VBUS
• NTC support
• Low side LED driver
• No external shunt resistor required
• "No Battery" operation without voltage drop
• Package: MLPD14 3x3mm

Pricing: $1.20 in 1000-piece quantities.

Availability: Now.

Datasheets: Click here.