L9678P datasheet(175/203 Pages) STMICROELECTRONICS

175 / 203 page

DocID029274 Rev 3

175/203

L9678P, L9678P-S

Electrical characteristics

202

15.11

COVRACT

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

-40 °C

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

VDDQ = VDD5 or VDD3V3

15.12

VDD5 regulator

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

-40 °C

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

Table 33. COVRACT DC Specifications

N°

Symbol

Parameter

Condition

Min

Typ

Max

Unit

1VOH_COVRACT

COVRACT output voltage

ILOAD = -0.5 mA

VDDQ

-0.6

-VDDQ

2VOL_COVRACT

ILOAD = 2.0 mA

0.4

Table 34. COVRACT AC specifications

N°

Symbol

Parameter

Condition

Min

Typ

Max

Unit

1TRISE_COVRACT Rise time

80pF load, 20%-80%

0.5

µs

2TFALL_COVRACT Fall time

80pF load, 20%-80%

0.5

µs

Table 35. VDD5 regulator DC specifications

N°

Symbol

Parameter

Condition

Min

Typ

Max

Unit

1VO_VDD5

Output voltage

Across all line and load,

steady state

4.85

5.15

2IO_BVDD5

Base driver current limit

VDD5 > VDD5UVL

3IO_BVDD5_LOW

Base driver current limit

Low level

VDD5 < VDD5UVL

2-5

4IO_VDD5

Output load current

0.5

200

5dVSR_ac

Line transient response

All load IO_VDD5;

VIN=6V to 18V @ dt = 1 µs;

Design Info

4.5

5.5

6dVLR_ac

Load transient response

All line;

IO_VDD5= 1mA to 100mA

@dt = 1 µs;

Design Info

4.5

5.5

7IOF_VDD5

Open feedback current on

VDD5

Active only during

VDD5_rampup state

105

µA

8VDD5OV

Over voltage detection

5.2

5.50

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