L9733 datasheet(14/35 Pages) STMICROELECTRONICS

14 / 35 page

Electrical performance characteristics

L9733

14/35

DocID11319 Rev 12

3.2

AC characteristics

Tamb = -40 to 125 °C, Vdd = 4.5 to 5.5 Vdc, Vbat = 4.5 to 18 Vdc, unless otherwise specified

RdsonDrn1-8(1)

On resistance

(Drn to SRC1-8)

@ +125 °C @ IDRN = 350 mA

1.2

@ +25 °C @ IDRN = 350 mA

0.7

@ -40 °C @ IDRN = 350 mA

0.5

Drn1-8ther(2)

Thermal shutdown

temperature

DI = ACFFh, IDrn1-8 = 1 mA,

SRC1 – SRC8 = GND, Increase

temperature until Drn1 - Drn8 > 2

VDC, Verify DO Bits 0-15 are ”Set”

151

200

°C

Drn1-8hyst(2) Hysteresis

Drn1 - Drn8 < 2 VDC

°C

1. RdsonDrn1-8  1.2 Ω; at Vbat between 3.5 V and 27 V and T between -40 °C and 150 °C

2. Design Information, not tested.

Table 6. DC characteristics (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Table 7. AC characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Units

TfiltDRN1-8

DRN1 - DRN8

Open load & short to

GND filter time (low-side)

(Latch mode)

DI = AC00h, DI = A3FFh

SRC1 – SRC8 = GND

300

900

μs

TfiltSRC1-8

SRC1 - SRC8

Open load & short to

Vbat filter time

(high-side)

(Latch mode)

DI = AC00h, DI = A3FFh

DRN1 – DRN8 = Vb

300

900

μs

TdelDRN1-8

DRN1 - DRN8

Overcurrent switch off

delay

(low-side)

DI = ACFFh, DI = AA00h

SRC1 – SRC8 = GND

μs

TdelSRC1-8

SRC1 - SRC8

Overcurrent switch off

delay

(high-side)

DI = ACFFh, DI = AA00h

DRN1 – DRN8 = Vb

μs

Tres

Restart time after

overcurrent switch off

time (Int)

DI = ACFFh, DI = AA00h

120

450

Drn1-8htol

Slew rate

turn on

Outputs loaded as Figure 4

See Figure 2

0.65

1.95

V/μs

Drn1-8ltoh

Turn off (low-side)

0.5

1.5

V/μs

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