L9679P datasheet(235/272 Pages) STMICROELECTRONICS

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L9679P

Electrical characteristics

271

3IO_SYNCBST_VL_IH

SYNCBOOST output

current

SYS_CTL(SYBST_V) = 0

SYS_CFG(LOW_POWER_M

ODE) = 0

360

4IO_SYNCBST_VL_IL

SYS_CTL(SYBST_V) = 0

SYS_CFG(LOW_POWER_M

ODE) = 1

240

5IO_SYNCBST_VH_IH

SYS_CTL(SYBST_V) = 1

SYS_CFG(LOW_POWER_M

ODE) = 0

290

6IO_SYNCBST_VH_IL

SYNCBOOST output

current

SYS_CTL(SYBST_V) = 0

SYS_CFG(LOW_POWER_M

ODE) = 1

190

7dVSR_ac

Line transient response

All line, load; dt = 100 μs;

SYS_CTL(SYBST) = 0/1

Design Info

-8%

8dVLR_ac

-8%

9RDSON_SYNCBST

Power switch

resistance

0.5

IOC_SYNCBST_HIGH

Over current detection

of integrated MOS

SYS_CFG(LOW_POWER_

MODE) = 0

1.6

3.2

IOC_SYNCBST_LOW

SYS_CFG(LOW_POWER_

MODE) = 1

1.5

2.6

ILKG_SYNCBOOST

SYNCBOOST leakage

SYNCBOOST=40V Device off

μA

ILKG_SYNCBSTSW

SYNCBSTSW leakage

SYNCBSTSW=40V Device off

μA

VSYNCBST_OK

SYNCBOOST voltage

threshold

VSYNCBST_OV

SYNCBOOST Over

Voltage threshold

-22

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_TH

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

VSYNCBST_RESTART_TH

SYS_CTL(RESTART_SYBST

_SEL) = 1

Voltage threshold on

SYNCBOOST pin

Table 44. SYNCBOOST converter DC specifications (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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