The LM76002/LM76003 only requires a few external components to convert from a wide range of supply voltage to output voltage, as shown in Figure 21:
The LM76002/LM76003 also integrates a full list of features to aid system design requirements, such as VCC UVLO, programmable soft start, start-up tracking, programmable switching frequency, clock synchronization, and a power-good indication. Each system can select the features needed in a specific application. A comprehensive schematic with all features utilized is shown in Figure 22:
The external components must fulfill the requirements of the application, but also the stability criteria of the device control loop. The LM76002/LM76003 is optimized to work within a range of external components. Inductance and capacitance of the LC output filter each create poles that have to be considered in the control of the converter. Table 2 can be used to simplify the output filter component selection.
|fSW (kHz)||VOUT (V)||L (µH)||COUT (µF)||RFBT (kΩ)||RFBB (kΩ)|