Evaluation circuit EVAL-LT8337-1-AZ features the LT8337-1 as a 2MHz low IQ, synchronous boost converter with a 12V output from 4.5V to 12V input. When VIN goes above the 12V output regulation setpoint, the LT8337-1 smoothly transitions between regulation and PassThru™ mode. This evaluation circuit features Spread Spectrum Frequency Modulation (SSFM), Silent Switcher® technology, and EMI filters to provide optimum EMI performance. The converter can output 1.2A or more depending on input voltage (see Figure 3 in the user guide for the Maximum Output Current vs VIN curve). When placed in shutdown, the converter has very low quiescent current, ideal in automotive and other battery-powered applications. PULSE SKIP and BURST modes are selectable with jumper JP1. Each user-selectable option enables low quiescent current at light load and can also be combined with SSFM operation using JP1.
The LT8337-1 boost converter IC operates over an input range of 2.7V to 28V, suitable for automotive, telecom and industrial applications. It exhibits a low quiescent current of 23μA, making it ideal for battery-operated systems. The converter provides adjustable and synchronizable operation from 300kHz to 3MHz with SSFM option. At light load, either PULSE SKIP or low-ripple BURST mode can be selected to improve the efficiency. The LT8337-1 packs popular features such as soft-start, input undervoltage lockout, adjustable switching frequency and clock synchronization. The VC pin grants easy accessibility to change loop compensation to complement most applications.
The LT8337-1 comes in a small 16-lead plastic LQFN package for optimal size and emissions. The LT8337-1 data sheet gives a complete description of the part, pins, features, operation, and application information. The data sheet must be read in conjunction with this demo manual for EVAL-LT8337-1-AZ.
