VNF1048F datasheet(5/49 Pages) STMICROELECTRONICS

5 / 49 page

2.2

Thermal data

Table 3. Thermal data

Symbol

Parameter

Typ. value

Unit

RthJA

Thermal resistance, junction-to-ambient (JEDEC JESD 51-5) (1)

°C/W

Thermal resistance, junction-to-ambient (JEDEC JESD 51-7)

1. Device mounted on two-layer 2s0p PCB with 2 cm² heatsink copper trace

2.3

Main electrical characteristics

6 V < VS < 60 V; -40 °C < TJ < 150 °C, unless otherwise specified.

All typical values refer to VS = 48 V; TJ = 25 °C, unless otherwise specified.

Table 4. Supply specification

Symbol

Parameter

Test conditions

Min. Typ. Max. Unit

Operating supply voltage

VS_EXT

Extended operating supply voltage

100 ms max. duration

VS_USD

Undervoltage shutdown

4.5

VS_USD_RES Undervoltage shutdown reset

VS_USD_HYS Undervoltage shutdown hysteresis

0.1

tVS_USD

Undervoltage shutdown filtering time.

µs

VSPI

SPI I/Os supply voltage

3.0

5.5

ISPI

SPI supply current during frame communication

ISPI_STBY

SPI supply current in standby state

µA

IS(ON)

Supply current (includes logic)

fPWM = 1 Hz, QG = 250 nC,

VS = 48 V, OUT = VS(1)

fPWM = 1 Hz, QG = 250 nC,

VS= 48 V, OUT = VS

IOUT

Output current

VS = 48 V, standby mode,

OUT = GND, bypass switch OFF

250

μA

VS = 13 V, standby mode,

OUT = GND, bypass switch OFF

μA

VS = 48 V, unlocked mode,

OUT = GND, bypass switch OFF

1.3

VS = 13 V, unlocked mode,

OUT = GND, bypass switch OFF

1.15

IS_Q

Vs quiescent current (includes logic)–

independently from bypass switch condition

VS = 48 V, TJ = 25 °C, OUT = VS

µA

VS = 48 V, TJ = 25 °C, OUT = GND

310

µA

VS = 13 V, TJ = 25 °C, OUT = VS

µA

VS = 13 V, TJ = 25 °C, OUT = GND

130

µA

VS_POR_ON

Power-on reset threshold. Device leaves the

reset mode

2.5

VS_POR_OFF

Power-on shutdown threshold. Device enters

reset mode

2.3

VS_POR_HYST Power-on reset hysteresis

0.2

VNF1048F

Electrical specification

DS13084 - Rev 8

page 5/49

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