suppliers of TPS77601DRG4 and PDF data of TPS77601DRG4

FRACTIONAL MULTI-GAIN CHARGE PUMP The core of the LM2788 is a two-phase charge pump con- trolled by an internally generated non-overlapping clock. The charge pump operates by using the external flying capaci- tors, Cl and C2, to transfer charge from the input to the output. During the charge phase, which doubles as the PFM 'idle state', the flying capacitors are charged by the input supply. The charge pump will be in this state until the output voltage drops below the target regulation voltage, triggering the charge pump to activate so that it can deliver charge to the output. Charge transfer is achieved in the pump phase, where the fully charged flying capacitors are connected to the output so that the charge they hold can supply the load and recharge the output capacitor. Input, output, and intermediary connections of the flying capacitors are made with internal MOS switches. The LM2788 utilizes two flying capacitors and a versatile switch network to achieve several fractional voltage gains: '/2. 2/3. and l. With this gain-switching ability, it is as if the LM2788 is three-charge-pumps-in-one. The 'active' charge pump at any given time is the one that will yield the highest efficiency given the input and output conditions present.
TPS77601DRG4 on stock