The analog adjust pin (IADJ) provides the reference for the peak current trip point. Through the use of an internal 10:1 divider, a wider range and finer control of the peak current sense threshold is created. For example, applying 2.2 V to the IADJ pin creates a 220-mV, peak-current-sense trip point. The lower sense voltage also lowers the power (V2/R) losses at the sense resistor. There is a practical lower limit to the IADJ pin voltage choice due to circuit non-idealities. For example, using VIADJ = 0.5 V results in a sense voltage of 50 mV, which does not allow accurate operation.