IW1692

Not Recommended For New Designs iW1692 Low-Power Off-line Digital PWM Controller 1.0 Features Primary-side feedback eliminates opto-isolators and simplifies design Multi-mode operation for highest overall efficiency Built-in cable drop compensation Very tight output voltage regulation No external loop compensation components required Complies with CEC/EPA/IEC no load power consumption and average efficiency regulations Built-in output constant-current control with primary-side feedback Low start-up current (10 µA typical) Built-in soft start Built-in short circuit protection AC line under/overvoltage and output overvoltage protection 40 kHz PWM switching frequency PFM operation at light load Built-in ISENSE pin short protection Space-saving SOT-23 package 2.0 Description The iW1692 is a high performance AC/DC power supply controller which uses digital control technology to build peak current mode PWM flyback power supplies. The device provides high efficiency along with a number of key built-in protection features while minimizing the external component count and bill of material cost. The iW1692 removes the need for secondary feedback circuitry while achieving excellent line and load regulation. It also eliminates the need for loop compensation components while maintaining stability over all operating conditions. Pulse-by-pulse waveform analysis allows for a loop response that is much faster than traditional solutions, resultin...