MCT8317A datasheet(7/161 Pages) TI1

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7.4 Thermal Information

THERMAL METRIC(1)

MCT8317A

UNIT

REE (WQFN)

RθJA

Junction-to-ambient thermal resistance (JEDEC 4-layer PCB, 6 thermal vias)

36.6

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

22.2

°C/W

RθJB

Junction-to-board thermal resistance

14.7

°C/W

ΨJT

Junction-to-top characterization parameter

3.4

°C/W

ΨJB

Junction-to-board characterization parameter

14.7

°C/W

RθJC(bot)

Junction-to-case (bottom) thermal resistance

4.5

°C/W

(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report.

7.5 Electrical Characteristics

TJ = –40°C to +150°C, VVM = 4.5 to 20 V (unless otherwise noted). Typical limits apply for TA = 25°C, VVM = 12 V

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

POWER SUPPLIES

IVMQ

VM sleep mode current

VSPEED ≤ VIL (Max), TA = 25 °C

µA

VSPEED ≤ VIL (Max) TA = 125 °C

µA

IVMS

VM standby mode current

[DEV_MODE = 1b (Sleep Mode) with

VSPEED > VIH(Min), I2C Speed command

= 0] or [DEV_MODE = 0b (Standby

Mode) with VSPEED ≤ VIL (Max) or I2C

speed command = 0]

IVM

VM operating mode current

VSPEED > VIH (Min) in PWM mode or

non-zero speed command in I2C mode,

Output PWM Freq = 25 kHz, TA = 25 °C,

No Motor Connected

VSPEED > VIH (Min) in PWM mode or

non-zero speed command in I2C mode,

Output PWM Freq = 25 kHz, No Motor

Connected

VAVDD

Analog regulator voltage

VVM ≥ 6 V, VVIN_AVDD ≥ 6 V, 0 mA ≤

IAVDD ≤ 20 mA, including voltage, temp,

load and line transients

3.15

3.3

3.45

4.5 V ≤ VVM < 6 V, 4.5 V ≤ VVIN_AVDD <

6 V, 0 mA ≤ IAVDD ≤ 20 mA, including

voltage, temp, load and line transients

3.15

3.3

3.45

IAVDD

Analog regulator external load

4.5 V ≤ VVM < 6 V, 4.5 V ≤ VVIN_AVDD < 6

Analog regulator external load

VVM ≥ 6V, VVIN_AVDD ≥ 6V

IAVDD_LIM

Analog regulator current limit

VAVDD ≥ 2.7V, soft short to GND

100

125

150

CAVDD

Capacitance for AVDD

External load IAVDD = 0 mA

0.5

2.2

7.05

External load 0mA ≤ IAVDD ≤ 20 mA

2.35

4.7

7.05

VDVDD

Digital regulator voltage

No External load, including voltage,

temp, load and line transients

1.45

1.55

1.65

IDVDD

External digital regulator load

No Load

CDVDD

Capacitance for DVDD

External load IDVDD = 0 mA

0.6

2.2

7.05

VCP

Charge pump regulator voltage

4.2 V ≤ VVM < 6 V, CP with respect to VM

5.5

VVM ≥ 6V, CP with respect to VM

4.5

5.5

fCP

Charge pump switching frequency

400

kHz

DRIVER OUTPUTS

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MCT8317A

SLLSFQ2 – JANUARY 2023

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