L6758ATR datasheet(12/42 Pages) STMICROELECTRONICS

12 / 42 page

Electrical specifications

L6758A

12/42

DocID023298 Rev 2

Electrical specifications

3.1

Absolute maximum ratings

3.2

Electrical characteristics

Table 4. Absolute maximum ratings

Symbol

Parameter

Value

Unit

VCC12, GDC

to GND

-0.3 to 14

VCC, STM, TM, SPWM, PWMx,

SIMAX/IMAX, BOOT/ADDR, SENDRV,

ENDRV,

to GND

-0.3 to 7

All other pins

to GND

-0.3 to 3.6

Table 5. Electrical characteristics (VCC = 5 V ± 5%, TJ = 0 °C to 70 °C unless otherwise specified)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Supply current and power-on

VCC supply current

EN = high

EN = low

UVLO

VCC5

VCC turn-ON

VCC rising

4.1

VCC turn-OFF

VCC falling

3.0

UVLO

VCC12

VCC12 turn-ON

VCC12 rising

6.5

VCC12 turn-OFF

VCC12 falling

4.5

Oscillator, soft-start and enable

Main oscillator accuracy

180

200

220

kHz

Oscillator adjustability

OSC

= 30 k

Ω to GND

450

500

550

kHz

SSW

Main oscillator accuracy

207

230

253

kHz

Oscillator adjustability

SOSC

= 30 k

Ω to GND

493

580

667

kHz

ΔV

OSC

PWM ramp amplitude

1.5

FAULT

Voltage at pin SOSC

After any latch

3.0

Voltage at pin OSC

After OVP latch

3.0

SOFT

START

SS time

VBOOT > 0, from pinstrapping;

multi-phase section

456

mV/

μs

VBOOT > 0, from pinstrapping;

single-phase section

22.5

mV/

μs

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