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L6758A Datasheet(PDF) 8 Page - STMicroelectronics |
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L6758A Datasheet(HTML) 8 Page - STMicroelectronics |
8 / 42 page Pin description and connection diagrams L6758A 8/42 DocID023298 Rev 2 22 SCOMP / TMAX Error amplifier output. Connect with an (R SF - C SF )// C SP to SFB. The device cannot be disabled by pulling low this pin. Connect proper resistor R TMAX to GND to define TMAX register. 23 SREF The reference used for the regulation of the single-phase section is available on this pin with -100 mV offset. Connect through an R SREF - C SREF to SRGND to optimize DVID transitions. Connect through an R SOS resistor to the SFB pin to implement small positive offset to the regulation. 24 VCC5 Main IC power supply. Operative voltage is 5 V ±5%. Filter with 1 μF MLCC to GND (typ.). 25 SOSC Oscillator pin. It allows the programming of the switching frequency F SSW for the single- phase section. The pin is internally set to 1.0 V, frequency for single-phase is programmed according to the resistor connected to GND or VCC with a gain of 10 kHz/μA. Leaving the pin floating programs a switching frequency of 200 kHz. See Section 10 for details. 26 IMAX / SIMAX Connect a resistor divider to GND/VCC5 in order to define the IMAX register for both single-phase and multi-phase sections. See Table 8, Table 10 and Section 6 for details. 27 BOOT / ADDR Connect a resistor divider to GND/VCC5 in order to define BOOT register and SVI address. See Table 8 and Section 6 for details. 28 STM Thermal monitor sensor. Connect with proper network embedding NTC to the single-phase power section. The IC senses the power section temperature and uses the information to define the VR_HOT signal and temperature zone register. By programming proper STCOMP gain, the IC also implements load-line thermal compensation for the single-phase section. Short to GND if not used. See Section 8 for details. 29 STCOMP Thermal monitor sensor gain. Connect proper resistor divider between VCC5 and GND to define the gain to apply to the signal sensed by ST to implement thermal compensation for the single-phase section. Short to GND to disable thermal compensation for single-phase. See Section 8 for details. 30 TCOMP Thermal monitor sensor gain. Connect proper resistor divider between VCC5 and GND to define the gain to apply to the signal sensed by TM to implement thermal compensation for the multi-phase section. Short to GND to disable thermal compensation for multi-phase. See Section 8 for details. 31 TM Thermal monitor sensor. Connect with proper network embedding NTC to the multi-phase power section. The IC senses the power section temperature and uses the information to define the VR_HOT signal and temperature zone register. By programming proper TCOMP gain, the IC also implements load-line thermal compensation for the multi-phase section. Short to GND if not used. See Section 8 for details. Table 2. Pin description (continued) Pin# Name Function |
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