By Alex Pluemer, contributing writer
Microchip Technology Inc. recently launched a new linear low-dropout (LDO) regulator that can extend battery life in mobile and portable electronic devices by as much as four times longer than conventional ultra-low-quiescent (lQ ) LDOs. The MCP1811 LDO’s ultra-low lQ will allow consumers to recharge and replace batteries less frequently, a crucial factor in the marketability of battery-powered electronic devices.
By featuring an ultra-low lQ of 250 nA (compared with approximately 1 µA for conventional LDOs), the new LDO reduces standby and/or shutdown current, thereby minimizing power consumption in battery-powered applications. Power dissipation in standby mode is a critical factor for remote, battery-operated sensor nodes due to the stringent demands that they make on battery life and the difficulty in replacing batteries.
The MCP1811 is available in package sizes as small as 1 × 1 mm, potentially saving developers valuable board space that can be used for a larger battery.
The MCP1811 also provides faster load line and transient response compared with other ultra-low- lQ LDOS, allowing devices like monitors or sensors to wake up more quickly from sleep or standby modes. Faster transient response times can help designers avoid undervoltage and overvoltage lockout measures found in sensitive applications in which transient spikes can lead to catastrophic results, said ST.
Samples are available. Prices start at $0.28 per 10,000 units in a 1 × 1-mm DFN package. Parts can be purchased via Microchip’s purchasing portal.
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