MPC5744C datasheet(13/76 Pages) PHILIPS

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4. VDD_LV supply pins should never be grounded (through a small impedance). If these are not driven, they should only be

left floating

5. VIN1_CMP_REF ≤ VDD_HV_A

6. This supply is shorted VDD_HV_A on lower packages.

7. TJ=150°C. Assumes TA=125°C

• Assumes maximum

θJA of 2s2p board. See Thermal attributes

4.3 Voltage regulator electrical characteristics

The voltage regulator is composed of the following blocks:

• Choice of generating supply voltage for the core area.

• Control of external NPN ballast transistor

• Generating core supply using internal ballast transistor

• Connecting an external 1.25 V (nominal) supply directly without the NPN ballast

• Internal generation of the 3.3 V flash supply when device connected in 5V

applications

• External bypass of the 3.3 V flash regulator when device connected in 3.3V

applications

• Low voltage detector - low threshold (LVD_IO_A_LO) for VDD_HV_IO_A supply

• Low voltage detector - high threshold (LVD_IO_A_Hi) for VDD_HV_IO_A supply

• Low voltage detector (LVD_FLASH) for 3.3 V flash supply (VDD_HV_FLA)

• Various low voltage detectors (LVD_LV_x)

• High voltage detector (HVD_LV_cold) for 1.2 V digital core supply (VDD_LV)

• Power on Reset (POR_LV) for 1.25 V digital core supply (VDD_LV)

• Power on Reset (POR_HV) for 3.3 V to 5 V supply (VDD_HV_A)

The following bipolar transistors1 are supported, depending on the device performance

requirements. As a minimum the following must be considered when determining the

most appropriate solution to maintain the device under its maximum power dissipation

capability: current, ambient temperature, mounting pad area, duty cycle and frequency for

Idd, collector voltage, etc

1. BCP56, MCP68 and MJD31are guaranteed ballasts.

General

MPC5746C Microcontroller Datasheet, Rev. 6, 11/2018

NXP Semiconductors

MPC5744C Datasheet(PDF) 13 Page - NXP Semiconductors