L9679P datasheet(233/279 Pages) STMICROELECTRONICS

Part #	L9679P

Description	Automotive advanced airbag for mid/high end applications and cut-off battery IC

PDF	279 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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233 / 279 page

DS11627 Rev 7

233/279

L9679P

Electrical characteristics

278

Figure 71. SPI timing diagram

18.8

ERBoost regulator

All electrical characteristics are valid for the following conditions unless otherwise noted:

-40 °C  Ta  +95 °C, VINGOOD0  VIN  35 V.

CS_x

SCLK_x

MSB OUT

LSB IN

DATA

LSB OUT

DON’T

CARE

MSB IN

MISO_x

MOSI_x

GAPGPS02305

Table 36. ERBoost regulator DC specifications

Symbol

Parameter

Conditions

Min

Typ

Max Unit

VO_ERBST

Boost output voltage

Across all line and IO_BST

load (steady state)

SYS_CTL(ER_BST_V)=0

22.6 23.8

Across all line and IO_BST

load (steady state)

1SYS_CTL(ER_BST_V)=1

31.65

IO_ERBST

Boost output current

0.1

dVSR_ac

Line transient response

All line, load; dt=100us;

BST33V = 0/1

Design Info

-8%

dVLR_ac

Load transient response

All line, load; dt=100us;

BST33V = 0/1

Design Info

-8%

RDSON_ERBST

Power switch resistance

IOC_ERBST

Over current detection

650

1350

IOC_ERBST_ERON

ER Switch activated AND

SW_REGS_CONF(LOW_E

RBST_ILIM_ERON) = 1

125

600

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