MP6546

– 22V, 3A PEAK, 3-PHASE BLDC DRIVER WITH 1MHZ I2C INTERFACE

MP6546 Rev. 1.0

MonolithicPower.com

5

3/20/2023

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© 2023 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

VIN = 12V, EN = 3.3V, TJ = -40°C to +125°C, unless otherwise noted.

Parameters

Symbol

Condition

Min

Typ

Max

Units

Input under-voltage lockout (UVLO)

rising threshold

VUVLO

3.2

3.4

V

Input UVLO hysteresis

0.26

V

Operating supply current

IIN

3.8

mA

Standby current

ISTB

3.3V LDO shutdown

90

μA

Shutdown current

EN = low

0.8

μA

EN input high voltage

VEN

1.5

V

EN input low voltage

VEN

0.4

V

High-side (HS) switch on resistance

RHS_ON

IOUT = 1A

150

mΩ

Low-side (LS) switch on resistance

RLS_ON

IOUT = 1A

150

mΩ

Over-current protection (OCP)

IOCP

OCP_SEL = 0

3

A

Short-circuit protection (SCP)

ISCP

OCP_SEL = 0

4.5

A

OC retry time

tSCP

150

ms

Max oscillator frequency

fCLK

Full scale

-2%

15

+2%

MHz

PWM output frequency

fSW

25

kHz

3.3V LDO output

V3P3

IOUT = 100mA

-5%

3.3

+5%

V

nFT pull-down resistance

RnFT

IOUT = 5mA

9

Ω

Charge pump voltage

VCP

VIN +

3.3

V

AD resolution (5)

10

bit

AD full-scale reference

VAD

-0.8%

3.3

+0.8%

V

Thermal shutdown threshold (5)

160

°C

Thermal shutdown hysteresis (5)

40

°C

I2C Interface

Input low voltage

0.3 x

V3P3

Input high voltage

0.7 x

V3P3

V

Open-drain output low voltage

VOL_I2C

3mA load

0.4

V

To I2C max clock frequency

fSCL

1

MHz

SPI Interface

Input low voltage (MISO1)

0.3 x

V3P3

V

Input high voltage (MISO1)

0.7 x

V3P3

V

Push-pull output low voltage

(MOSI1, SCK1, CS1)

VOL_MISO

1mA load

0.4

V

Push-pull output high voltage

(MOSI1, SCK1, CS1)

VOL_MISO

-1mA load

V3P3 -

0.4

V

SPI clock frequency (5)

fSCK

2

MHz

Note:

5) Guaranteed by design.