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SN74ALVCH16952DLR

SN74ALVCH16952DLR资料
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File Size : 116 KB Manufacturer:TI Description: PIN DESCRIPTION No connection. This pin is connected to the Drain of the power MOSFET of the Core supply and it provides the positive sensing for the internal current sensing circuitry. An external resis- tor programs the CS threshold depending on the RDS of the power MOSFET. An external capacitor is placed in parallel with the programming resistor to provide high frequency noise filtering. This pin provides the soft-start for the switching regulator. An internal current source charges an external capacitor that is connected from this pin to the ground which ramps up the outputs of the switching regulator, preventing the outputs from overshooting as well as limiting the input current. The second function of the Soft-Start cap is to provide long off time for the synchronous MOSFET or the Catch diode (HICCUP) during current limiting. LSB input to the DAC that programs the output voltage. This pin can be pulled up exter- nally by a 10K resistor to either 3.3V or 5V supply. Input to the DAC that programs the output voltage. This pin can be pulled-up externally by a 10KV resistor to either 3.3V or 5V supply. Input to the DAC that programs the output voltage. This pin can be pulled-up externally by a 10K resistor to either 3.3V or 5V supply. MSB input to the DAC that programs the output voltage. This pin can be pulled-up exter- nally by a 10K resistor to either 3.3V or 5V supply. This pin selects a range of output voltages for the DAC. 5V supply voltage. This pin is connected directly to the output of the Core supply to provide feedback to the Error comparator. No connection. This pin is an open collector output that switches LO when the output of the converter is not within 10% (typ) of the nominal output voltage. When PGd pin switches LO the saturation voltage is less than 0.4V at 3mA. This pin is connected to the Source of the power MOSFET for the Core supply and it provides the negative sensing for the internal current sensing circuitry. Output driver for the high side power MOSFET. No connection. This pin serves as the ground pin and must be connected directly to the ground plane. A high frequency capacitor (0.1 to 1mF) must be connected from V5 and V12 pins to this pin for noise free operation. Output driver for the synchronous power MOSFET. This pin is connected to the 12 V supply and serves as the power Vcc pin for the output drivers. A high frequency capacitor (0.1 to 1mF) must be connected directly from this pin to ground pin in order to supply the peak current to the power MOSFET during the transitions. Over-voltage comparator output. This pin programs the oscillator frequency in the range of 50KHz to 500KHz with an external capacitor connected from this pin to the ground.


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	1PCS	100PCS	1K	10K
价格


型号：SN74ALVCH16952DLR 厂家：TI 封装：批号：07+ 数量：15658 说明：原装正品


运费：所有运费均有我司承担所在地：深圳新旧程度：