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AIC1641 Low Voltage Step-Up DC/DC Controller
FEATURES
l A Guaranteed Start-Up from less than 0.9 V. l High Efficiency. l Low Quiescent Current. l Fixed or adjustable Output Voltage. l Logic Controlled Shutdown. l External Switch Driver for High Power Level Appli-
cation.
APPLICATIONS
l Pagers. l Cameras. l Wireless Microphones. l Pocket Organizers. l Battery Backup Suppliers. l Portable Instruments.
DESCRIPTION
The AIC1641 is a high efficiency step-up DC/DC controller for applications using 1 to 4 battery cells. Only three external components are required to deliver a fixed output voltage of 2.7V, 3.0V, 3.3V, or 5.0V.
Pulse Frequency Modulation scheme brings optimized performance for applications with light output loading and low input voltage.