MCP1811A Ultra-Low Iq LDOs

By Microchip Technology 151

MCP1811A Ultra-Low Iq LDOs

Ideal for IoT and battery-operated applications, such as wearables, remotes, and hearing aids, the MCP1811A LDOs from Microchip Technology offer 250 nA of ultra-low IQ. This reduces power consumption in applications by minimizing standby or shutdown current. Reducing standby power consumption is critical in remote, battery-powered sensor nodes, where battery replacement is difficult and operating life requirements are high. Available in package options as small as 1 mm x 1 mm, the MCP1811 consumes minimal board space to meet the needs of today's compact portable electronic designs. Depending on the application and number of LDOs, designers can take advantage of the extra board space with a larger battery to further increase battery life. An additional benefit of the MCP1811 is faster load line and transient response when compared to other ultra-low IQ LDOs. Faster response times can accelerate the wake-up speed in devices such as monitors or sensors that require immediate attention. Faster transient response can help designers avoid undervoltage and overvoltage lockout measures used in sensitive applications where transient spikes can lead to catastrophic results. With an ultra-low IQ of 250 nA versus the approximately 1 µA operation of traditional devices, the MCP1811 LDO reduces the quiescent current to save battery life, enabling end users to recharge or replace batteries less often. These products are suitable for all low-powered applications, including energy harvesting, smart cards, wearables, and medical devices such as hearing aids.

  • Ultra-low quiescent current: 250 nA (typical)
  • Ultra-low shutdown supply current: 10 nA typ (MCP1811A) and 5 nA typ (MCP1811B)
  • Input voltage range: 1.8 V to 5.5 V
  • Standard output voltages: 1.0 V, 1.2 V, 1.8 V, 2.0 V, 2.5 V, 2.8 V, 3.0 V, 3.3 V, and 4.0 V
  • Low dropout voltage: 400 mV (typical) with small variation over load range
  • Stable with ceramic output capacitor: 1.0 µF
  • Overcurrent protection with foldback
  • Output discharge (MCP1811A)
  • Available in 3- and 5-lead SOT-23, 3- and 5-lead SC70, 4-lead 1 mm x 1 mm UDFN