L9678P datasheet(174/203 Pages) STMICROELECTRONICS

174 / 203 page

Electrical characteristics

L9678P, L9678P-S

174/203

DocID029274 Rev 3

15.9

ER charge

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

-40 °C

 Ta  +95 °C, VINGOOD1(max)  VIN  35 V, 8 V  ERBOOST.

15.10

ER switch

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

-40 °C

 Ta  +95 °C, VINGOOD1(max)  VIN  35 V.

Table 29. ER current generator DC specifications

N°

Symbol

Parameter

Condition

Min

Typ

Max

Unit

1IER_CHARGE

ER charge current

ERBOOST – VER

 3 V

-33

-30

-27

2RDSON_ERCHARGE

ER charge power

resistance

(VERBOOST - VVER) / IVER

IVER = 10mA

Ω

Table 30. ER current generator AC specifications

N°

Symbol

Parameter

Condition

Min

Typ

Max

Unit

1TON_ERCAP

Energy reserve capacitor

charge-up time

CVER  4.7mF nominal,

BST33V = 0; Design Info

Table 31. ER switch DC specifications

N°

Symbol

Parameter

Condition

Min

Typ

Max

Unit

1RDSON ERSW

Power switch resistance

ILIM,ERSW(min)

0.5

Ω

2ILIM,ERSW

ER switch current limit

400

600

3TJSD_ERSW

Thermal shutdown

150

175

190

°C

4THYS_TSDERSW

-5

°C

Table 32. ER switch AC specifications

N°

Symbol

Parameter

Condition

Min

Typ

Max

Unit

1TON_ERSW

ER turn-on time (time to

reach either RDSON_ERSW or

ILIM_ERSW)

CVIN = 10µF

µs

2TFLT_TSD_ERSW Thermal shutdown filter time -

µs

3TBLK_ERSW

ER switch activation blanking

time after thermal shutdown

L9678P датащи(PDF) 174 Page - STMicroelectronics

L9678P датащи(HTML) 174 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL