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L6726A датащи(PDF) 5 Page - STMicroelectronics |
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L6726A датащи(HTML) 5 Page - STMicroelectronics |
5 / 24 page L6726A Pins description and connection diagrams 5/24 2 Pins description and connection diagrams Figure 3. Pins connection (top view) 2.1 Pin descriptions Table 2. Pins descriptions 1 2 3 4 VCC FB COMP / DIS PHASE LGATE / OC GND UGATE BOOT 5 6 7 8 L6726A Pin n Name Function 1BOOT HS Driver Supply. Connect through a capacitor (100nF) to the floating node (LS-Drain) pin and provide necessary bootstrap diode from VCC. 2 UGATE HS Driver Output. Connect to HS mosfet gate. 3GND All internal references, logic and drivers are connected to this pin. Connect to the PCB ground plane. 4 LGATE / OC LGATE. LS Driver Output. Connect to LS mosfet gate. OC. Over Current threshold set. During a short period of time following VCC rising over UVLO threshold, a 10 µA current is sourced from this pin. Connect to GND with an ROCSET resistor greater than 5kΩ to program OC Threshold. The resulting voltage at this pin is sampled and held internally as the OC set point. Maximum programmable OC threshold is 0.55V. A voltage greater than 0.75V (max) activates an internal clamp and causes OC threshold to be set at 400 mV. ROCSET not connected sets the 400mV default threshold. 5VCC Device and LS Driver power supply. Operative range from 4.1V to 13.2V. Filter with at least 1 µF MLCC to GND. 6FB Error Amplifier Inverting Input. Connect with a resistor RFB to the output regulated voltage. Additional resistor ROS to GND may be used to regulate voltages higher than the reference. 7 COMP / DIS COMP. Error Amplifier Output. Connect with an RF - CF // CP to GND to compensate the device control loop in conjunction to the FB pin. During the Soft-Start phase, a 10 µA current is sourced from this pin so the compensation capacitors also act to program the SS time. DIS. The device can be disabled by pulling this pin lower than 0.4V (min). Setting free the pin, the device enables again. 8 PHASE HS Driver return path, current-reading and adaptive-dead-time monitor. Connect to the LS drain to sense RdsON drop to measure the output current. This pin is also used by the adaptive-dead-time control circuitry to monitor when HS mosfet is OFF. |
Аналогичный номер детали - L6726A_07 |
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Аналогичное описание - L6726A_07 |
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