L9788 datasheet(132/264 Pages) STMICROELECTRONICS

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Pre-drivers - IGNITER IGN[1:6]

L9788

132/264

DS12308 Rev 4

Conditions:

5.5 V ≤ VB_IN ≤ 18 V, Tj -40 to 175 °C unless otherwise specified;

Table 56. Pre-driver - IGNITER electrical characteristics

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

High-side current generator parameters

IOH1_HS_IGN

High-side output

current 1

VIGNX = 4 V

VDD5 = 5 V



MSC Bit

IGN_CURRENT

CFG = 1,

OL_RED = 0

4.7

15.3

IGN1/2/3/4/5/6

IOH1_HS_IGN_OL_RED

High-side output

current 1

VIGNX = 4 V

VDD5 = 5 V

MSC Bit

IGN_CURRENT

CFG = 1,

OL_RED = 1

IGN1/2/3/4/5/6

IOH2_HS_IGN

High-side output

current 2

VIGNX = 4 V

VDD5 = 5 V

MSC Bit

IGN_CURRENT

CFG = 0 (Default

Value)

14.7

30.3

IGN1/2/3/4/5/6

VOH1_HS_IGN

Output voltage 1

@ high-side on

Isource = 5 mA

MSC Bit

IGN_CURRENT

CONFIG = 1,

OL_RED = 0

VDD5

-0.4

VDD5

IGN1/2/3/4/5/6

VOH1_HS_IGN_OL_RED

Output voltage 1

@ high-side on

Isource = 2 mA

MSC Bit

IGN_CURRENT

CONFIG = 1,

OL_RED = 1

VDD5

-0.4

VDD5

IGN1/2/3/4/5/6

VOH2_HS_IGN

Output voltage 2

@ high-side on

Isource = 15mA

MSC Bit

IGN_CURRENT

CONFIG = 0

(Default Value)

VDD5

-0.6

VDD5

IGN1/2/3/4/5/6

IOFF_LK_IGN

High-side leakage

current @ off

condition

IGNx = 2.5 V in off

µA

IGN1/2/3/4/5/6

Low-side MOSFET parameters

RDS-on_LS_IGN

Drain–source

resistance

I_load = 0.1A

@ T = -40 °C

1.8

2.2

3.1

Ω

IGN1/2/3/4/5/6

RDS-on_LS_IGN

Drain–source

resistance

I_load = 0.1 A

@ T = 27 °C

2.4

3.0

3.91

Ω

IGN1/2/3/4/5/6

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