Features: A Guaranteed Start-Up from less than 0.9 V.
High Efficiency.
Low Quiescent Current.
Less Number of External Components needed.
Low Ripple and Low Noise.
Fixed Output Voltage: 2.7V, 3.0V, 3.3V, 3.7V, 4.5V and 5V.
Space Saving Packages: SOT-89, TO-92, and SOT-23. ApplicationPagers.
Cameras.
Wireless Microphones.
Pocket Organizers.
Battery Backup Suppliers.
Portable Instruments. Pinout
TYPICAL APPLICATION
DescriptionThe AIC1642 is a high efficiency step-up DC/DC converter for applications using 1 to 4 NiMH bat-tery cells. Only three external components are re-quired to deliver a fixed output voltage of 2.7V, 3.0V, 3.3V, 4.5V or 5V. The AIC1642 starts up from less than 0.9V input with 1mA load. Pulse Frequency Modulation scheme brings optimized performance for applications with light output load-ing and low input voltages. The output ripple and noise are lower compared with the circuits operat-ing in PSM mode.
The PFM control circuit operating in 100KHz (max.) switching rate results in smaller passive components. The space saving SOT-23, SOT-89 and TO-92 packages make the AIC1642 an ideal choice of DC/DC converter for space conscious applications, like pagers, electronic cameras, and wireless microphones.
The AIC1642 is a high efficiency step-up DC/DC converter for applications using 1 to 4 NiMH bat-tery cells. Only three external components are re-quired to deliver a fixed output voltage of 2.7V, 3.0V, 3.3V, 4.5V or 5V. The AIC1642 starts up from less than 0.9V input with 1mA load. Pulse Frequency Modulation scheme brings optimized performance for applications with light output load-ing and low input voltages. The output ripple and noise are lower compared with the circuits operat-ing in PSM mode.
The PFM control circuit operating in 100KHz (max.) switching rate results in smaller passive components. The space saving SOT-23, SOT-89 and TO-92 packages make the AIC1642 an ideal choice of DC/DC converter for space conscious applications, like pagers, electronic cameras, and wireless microphones.
AIC1642 Data Sheet
