| Part Numbert | Mfg | Packt | D/C | Descriptiont | Qty | Company/Contact |
PBL3764A-4QNTR2A Datasheet
PBL3764A-4QNTR2A Price T he setpoint comparator input offset voltage and zero hyster- esis current affect setpoint error. While the 7.A zero hysteresis current allows the user to program the T M P01 with moderate resistor divider values, it does vary somewhat from device to de- vice, causing slight variations in the actual hysteresis obtained PBL3764A-4QNTR2A on stock response graphs (see Typical Operating Characteris- tics) show two components of the output response: a DC shift from the output impedance due to the load current change, and the transient response. A typical transient overshoot for a step change in the load cur- rent from 5mA t0 500mA is 40mV. Increasing the output capacitor's value and decreasing the ESR attenuates the overshoot. When the outputis shorted to ground,the frequency ofthe oscillator is reduced to about 210kHz, 1/7 the nominal frequency. This frequency foldback ensures that the in- ductorcurrent has more time to decay,thereby preventing runaway. The oscillator's frequency will progressively increase t0 1.5MHz when VFB rises above OV. |
