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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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L6730 데이터시트(PDF) 10 Page - STMicroelectronics |
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L6730 데이터시트(HTML) 10 Page - STMicroelectronics |
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10 / 52 page  Pin connections and functions L6730 - L6730B 10/52 Doc ID 11938 Rev 3 11 OCL A resistor connected from this pin to ground sets the valley- current-limit. The valley current is sensed through the low-side MOSFET(s). The internal current generator sources a current of 100 μA (I OCL) from this pin to ground through the external resistor (ROCL). The over-current threshold is given by the following equation: Connecting a capacitor from this pin to GND helps in reducing the noise injected from VCC to the device, but can be a low impedance path for the high-frequency noise related to the GND. Connect a capacitor only to a “clean” GND. 12 OCH A resistor connected from this pin and the high-side MOSFET(s) drain sets the peak-current-limit. The peak current is sensed through the high- side MOSFET(s). The internal 100 μA current generator (I OCH) sinks a current from the drain through the external resistor (ROCH). The over- current threshold is given by the following equation: 13 PHASE This pin is connected to the source of the high-side MOSFET(s) and provides the return path for the high-side driver. This pin monitors the drop across both the upper and lower MOSFET(s) for the current limit together with OCH and OCL. 14 HGATE This pin is connected to the high-side MOSFET(s) gate. 15 BOOT The high-side driver is supplied through this pin. Connect a capacitor from this pin to the PHASE pin, and a diode from VCCDR to this pin (cathode versus BOOT). 16 PGND This pin has to be connected closely to the low-side MOSFET(s) source in order to reduce the noise injection into the device. Connect to the PCB power ground plane. 17 LGATE This pin is connected to the low-side MOSFET(s) gate. 18 VCCDR 5V internally regulated voltage. It is used to supply the internal drivers and as a voltage reference. Filter it to GND with at least a 1µF ceramic cap. 19 VCC Supply voltage pin. The operative supply voltage range is from 4.5V to 14V. 20 PGOOD This pin is an open collector output and it is pulled low if the output voltage is not within the specified thresholds (90%-110%). If not used it may be left floating. Pull up this pin to VCCDR with a 10K resistor to obtain a logical signal. - Thermal PAD Thermal Pad connects the silicon substrate and makes good thermal contact with the PCB. Connect to the PCB power ground plane. Table 4. Pin connection (continued) Pin n. Name Description DSonLS R 2 OCL R OCL I VALLEY I ⋅ ⋅ = DSonHS R OCH R OCH I PEAK I ⋅ = |
유사한 부품 번호 - L6730_09 |
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유사한 설명 - L6730_09 |
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