L9678P datasheet(172/203 Pages) STMICROELECTRONICS

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Electrical characteristics

L9678P, L9678P-S

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DocID029274 Rev 3

15.8

ER boost

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

-40 °C

 Ta  +95 °C, VINGOOD1(max)  VIN  18 V.

Table 26. ER Boost converter DC specifications

N°

Symbol

Parameter

Condition

Min

Typ

Max

Unit

VO_ERBST

Boost output voltage

Across all line and IO_BST load

(steady state)

ERBST33V=0



Test conditions: IO_BST = 0.1 &

40mA

22.4

23.8

Across all line and IO_BST load

(steady state)

ERBST33V=1



Test conditions: IO_BST = 0.1 &

20mA

31.4

IO_ERBST

Boost output current

BST33V = 0

0.1

BST33V = 1

0.1

5dVSR_ac

Line transient response

All line, load; dt=100us;

BST33V = 0/1

Design Info

-8%

6dVLR_ac

Load transient response

All line, load; dt=100us;

BST33V = 0/1

Design Info

-8%

7RDSON_ERBST Power switch resistance -

Ω

8IOC_ERBST

Over current detection

550

800

9ILKG_ERBST

ERBOOST leakage

current

ERBOOST=40V

Device off

µA

VERBST_OK

ERBOOST voltage

threshold

BST33V = 0

BST33V = 1

VERBST_OV

ERBOOST Over Voltage

threshold

BST33V = 0

22.6

BST33V = 1

31.65

VERBST_DIS_TH

Voltage difference

between VIN and

ERBOOST to deactivate

the ER Boost regulator

VIN – ERBOOST

1.6

2.2

2.5

VCLAMP_EN_TH

Voltage difference

between ERBSTSW and

ERBOOST to activate

the ER Boost CLAMP

ERBSTSW – ERBOOST

1.6

2.2

2.5

TJSD_ERBST

Thermal shutdown

150

175

190

°C

17 THYS_TSDERBST

-5

°C

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