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Switching power manager features USB OTG, overvoltage protection

Milpitas, Calif.—Linear Technology Corp. has announced the LTC3576, the newest member in a family of multifunction power management ICs for Li-Ion/Polymer battery-based applications, including HDD-based media players, digital cameras, personal navigation devices, PDAs, smart phones and automotive-compatible portable electronics.

The LTC3576 features a bidirectional switching power manager with input overvoltage protection and USB On-The-Go (OTG) functionality, a stand-alone battery charger, three high efficiency synchronous buck regulators, an ideal diode, I²C control, plus an always-on LDO, all in a compact, low-profile 4mm x 6mm QFN package.

The LTC3576's USB-compatible bidirectional switching regulator features programmable input current limits of 100mA and 500mA, as well as a 1A wall adapter input current limit. For fast charging, the LTC3576 converts nearly all of the 2.5W available from the USB port to charging current, enabling up to 700mA from a 500mA limited USB supply and up to 1.5A from a wall adapter.

The bidirectional switching regulator can also take power from the battery to generate 5V and deliver up to 500mA for USB OTG ap plications without any additional components. The IC provides an overvoltage protection (OVP) control circuit that prevents damage to its input from the accidental application of voltages as high as 66V. The OVP circuit can protect the USB port even when the IC is providing power for USB OTG.

Pricing: Starts at $4.80 each for 1,000-piece quantities.
Availability: From stock.

Datasheet: Click here.

Linear Technology, www.linear.com

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