MC54L00J on stock| Parameter | Symbol | Conditions | mi¨n | typ | max | Unit | | Collector cutoff current | ICBO | VCB = 40V,IE = 0 | | | O1 | DA | | Emitter cutoff current | IEBO | VEB = 4V,Ic = O | | | O.l | A | | Forward current transfer ratio | hFE* | VCE = 1V, IC = lOrrrA | 60 | | 200 | | | Collector to emitter saturation voltage | VCE(sat) | Ic = lOmA,IB = ImA | | O17 | 0 25 | v | | Base to emitter saturation voltage | VBE(sat) | Ic = lOmA,IB = ImA | | | 1.0 | v | | Transition frequency | fT | VCB = 10V,IE = -lOmA, f= 200MHz | | 450 | | MHz | | Collector output capacitance | Cob | VCB = 10V,IE = 0, f= 1MHz | | 2 | 6 | pF | | rurn-on tlme | ton | | | 17 | | ns | | Tum-off time | toff | Refer to the measurment circuit | | 17 | | ns | | Storage time | ts | | 10 | | ns | | | | | | | |
| Characteristic | Symbol | Test condition | Min | Typ. | Max | Unit | | Peak forward voltage | VFM | IFM= 1.0 A | | | 1 2 | V | | Repetitive peak reverse current | lRRM | VRRM= rated | | | 10 | uA | | | | | | | |
Output Capacitance and Transient Response The LTC1844 regulators are designed to be stable with a wide range of output capacitors. The ESR of the output capacitor affects stability, most notably with small capaci- tors. A minimum output capacitor of laF with an ESR of 0.31 0r less is recommended to ensure stability. The LTC1844 is a micropower device and output transient response will be a function of output capacitance. Larger values of output capacitance decrease the peak deviations and provide improved transient response for larger load current changes. Note that bypass capacitors used to decouple individual components powered bythe LTC1844 will increase the effective output capacitor value. The shaded region of Figure 3 defines the region over which the LTC1844 regulators are stable. The maximum ESR allowed is 0.3 I . High ESR tantalum and electrolytic ca- pacitors may be used, but a low ESR ceramic capacitor must be in parallel at the output. There is no minimum ESR requirement.
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