AIC1640

The AIC1640 is a high efficiency step-up DC/DC converter for applications using 1 to 4 battery cells. Only three external components are required to deliver a fixed output voltage of 3V, 3.3V, or 5V. Pulse Frequency Modulation scheme brings optimized performance for applications with light output loading and low input voltage. The output ripple and noise are lower compared with the circuit operating in PSM mode. The AIC1640 starts up from below 0.9V input to boost either 3V, 3.3V, or 5V output with 1mA load.

Some useful features include external driver for higher power level applications, shutdown mode for saving the life of battery, and adjustable output version.The PFM control circuit operates in 100KHz (max.) switching rate, resulting in smaller passive component size, which makes the AIC1640 an ideal choice of DC/DC converter for space conscious applications.