| Part Numbert | Mfg | Packt | D/C | Descriptiont | Qty | Company/Contact |
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PC16550CV1 PC16550CV1 PC16550CV1 Datasheet special precautions against static electricity Reverse polarity protected Short citcuit protected output Reference and output are transformer isolated No calibration, adjustments or warmup Dual output {synchro/resolver} units available Available for either OoC to +700C, or -55aC to +1050C Low power units available. Request Model 1678 Hermeticall,/ sealed units on request Meets MIL-STD-202D, Methods 101 C,1 05B,1 06C, 107C,202D,204B,and 205D High reliability 883B or MIL-M-3851 0 units on requast Input registers are available PC16550CV1 PC16550CV1 PC16550CV1 Price continued next page NOTES: 1. Typical data is for design information only. 2. Negative current is defined as coming out of (sourcing) the specified device terminal. PC16550CV1 PC16550CV1 PC16550CV1 on stock 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. (2) The technical information described in this material is limited to showing representative character- istics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. |
