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Chip combines advanced power delivery with digital control

San Jose, Calif.—Targeted at portable consumer equipment, Summit Microelectronics' latest multi-output programmable power manager IC dubbed the SMB119 integrates seven precision programmable regulators and a wide range of digital power control functions.

The SMB119 incorporates three synchronous step-down converters, two step-up converters, one configurable step-up or step-down converter, and one low-dropout (LDO) linear regulator. Also included is a fully programmable system supervisor that monitors all channels for under-voltage and over-voltage events. The user can select how the SMB119 should react under abnormal conditions (assertion of RESET output, power-down in sequencing order or force shutdown), maximizing system reliability.

The power manager operates at a switching frequency of 1MHz, allowing for space-saving system components. DC-DC Power conversion efficiency of up to
95 percent reduces thermal dissipation and improves battery life in portable systems. A shutdown mode reduces current consumption to 0.1mA while automatic PWM/PFM operation improves light load efficiency. A PWM-override mode is also available for noise sensitive RF or audio applications. Short circuit current limiting and thermal protection safety circuits are also built-in to enhance reliability.

Pricing: $3.74 each in 10,000-unit quantities.
Availability: Production quantities.
Datasheet: Click here.

Summit Microelectronics, www.summitmicro.com

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