SP6644 Datasheet - Sipex

SP6644 High Efficiency Boost DC-DC Regulator

The SP6644/6645 devices are high-efficiency, low-power step-up DC-DC converters ideal for single or dual alkaline cell applications such as pagers, remote controls, pointing devices, medical monitors, and other low-power portable end products. Designers can control the SP6644 device with an active .

® SP6644/6645 Single/Dual Alkaline Cell, High Efficiency Boost DC-DC Regulator 90mA Output Current at 1.3V Input 190mA Output Current at 2.6V Input +2V to +5.5V Output Range 0.88V Guaranteed Start-Up 92% High Efficiency 1.6µA Quiescent Supply Current at VBATT Reverse Battery Protection Internal Synchronous Rectifier 5nA Logic Controlled Shutdown Current From VBATT Low-Battery Detection Active LOW Output VBAT 1 BATTL0 2 RLIM 3 SHDN 4.

SP6644 Features

* an active low output for batteries below +1.0V. The SP6645 device features an active low output for batteries below +2.0V. Both devices contain a 0.8Ω synchronous rectifier, a 0.5Ω N-channel MOSFET power switch, an internal voltage reference, circuitry for pulsefrequency-modulation, and an under vol

SP6644_SipexCorporation.pdf