L9679P datasheet(239/279 Pages) STMICROELECTRONICS

239 / 279 page

DS11627 Rev 7

239/279

L9679P

Electrical characteristics

278

3 IO_SYNCBST_VL_IH

SYNCBOOST output

current

SYS_CTL(SYBST_V) = 0

SYS_CFG(LOW_POWER_M

ODE) = 0

360

4 IO_SYNCBST_VL_IL

SYS_CTL(SYBST_V) = 0

SYS_CFG(LOW_POWER_M

ODE) = 1

240

5 IO_SYNCBST_VH_IH

SYS_CTL(SYBST_V) = 1

SYS_CFG(LOW_POWER_M

ODE) = 0

290

6 IO_SYNCBST_VH_IL

SYNCBOOST output

current

SYS_CTL(SYBST_V) = 0

SYS_CFG(LOW_POWER_M

ODE) = 1

190

7 dVSR_ac

Line transient response

All line, load; dt = 100 µs;

SYS_CTL(SYBST) = 0/1

Design Info

-8%

8 dVLR_ac

-8%

9 RDSON_SYNCBST

Power switch

resistance

0.5

10 IOC_SYNCBST_HIGH

Over current detection

of integrated MOS

SYS_CFG(LOW_POWER_

MODE) = 0

1.6

3.2

11 IOC_SYNCBST_LOW

SYS_CFG(LOW_POWER_

MODE) = 1

1.5

2.6

12 ILKG_SYNCBOOST

SYNCBOOST leakage SYNCBOOST=40V Device off

µA

13 ILKG_SYNCBSTSW

SYNCBSTSW leakage SYNCBSTSW=40V Device off

µA

14 VSYNCBST_OK

SYNCBOOST voltage

threshold

15 VSYNCBST_OV

SYNCBOOST Over

Voltage threshold

16 VSYNCBST_DIS_TH

Voltage difference

between VIN and

SYNCBOOST to

deactivate the SYNC

Boost regulator

VIN – SYNCBOOST

1.6

2.2

2.5

17 VSYNCBST_CLAMP_EN_T

Voltage difference

between SYNCBSTSW

and SYNCBOOST to

activate the SYNC

Boost CLAMP

VSYNCBSTSW –VSYNCBOOST

2.7

3.3

3.7

18 VVIN_SYNCBST_RESTART

_TH

Voltage threshold to

restart Syncboost

regulator during ER

State

SYS_CTL(RESTART_SYBST

_SEL) = 0

Voltage threshold on VIN pin

10.3

19 VSYNCBST_RESTART_TH

SYS_CTL(RESTART_SYBST

_SEL) = 1

Voltage threshold on

SYNCBOOST pin

Table 45. SYNCBOOST converter DC specifications (continued)

Symbol

Parameter

Conditions

Min

Typ

Max Unit

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