LTC3101EUF#PBF

LTC3101 is a complete power management solution for low power portable devices. It provides three high efficiency switching DC/DC converters which seamlessly transition from battery to USB/wall adapter power when available. A synchronous buck-boost regulator provides complete flexibility, allowing operation from a single Li-Ion/polymer battery, 2 to 3 AA cells, a USB port or any other power source operating from 1.8V to 5.5V. Two always-alive outputs, a 50mA LDO and a 200mA MAX output that tracks the higher voltage input supply, provide power for critical functions or additional external regulators. Pushbutton control logic and a programmable-duration microprocessor reset generator simplify interfacing to a microprocessor while internal sequencing and independent enable pins provide flexible power-up options. It is used in application such as ultra-portable digital video cameras, personal handheld GPS navigators, portable medical instruments etc.

• Buck-boost VOUT is 1.5V to 5.25V
• Dual 350mA buck regulators, VOUT is 0.6V to VIN
• Pushbutton on/off control
• Programmable power-up sequencing
• Input quiescent current in (Burst mode operation) is 38μA typical
• Oscillator frequency is 1.27MHz typical
• Operating temperature is -40°C to 85°C
• Package style is 24-lead plastic QFN

บันทึก

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