L6598D datasheet(5/24 Pages) STMICROELECTRONICS

5 / 24 page

L6598

Electrical characteristics

Doc ID 6554 Rev 7

5/24

Vref

2, 4

Voltage to current

converters threshold

1.9

2.1

Dead time between low

and high side conduction

0.2

0.27

0.35

µs

IVref

2, 4

Reference current

120

μA

Timing section

kss

Soft start timing constant

Css = 330nF

0.115

0.15

0.185

s/µF

Sense op amp

lIB

6, 7

Input bias current

0.1

µA

Vio

Input offset voltage

-10

Rout

Output resistance

200

300

Iout-

Source output current

Vout = 4.5V

Iout+

Sink output current

Vout = 0.2V

Vic

6,7

Op amp input common

mode range

-0.2

GBW

Sense op amp gain band

width product (1)

0.5

MHz

Gdc

DC open loop gain

Comparators

Vthe1

Enabling comparator

threshold

0.56

0.6

0.64

Vthe2

Enabling comparator

threshold

1.05

1.2

1.35

tpulse

8,9

Minimum pulse length

200

Guaranteed by design

Table 4.

Electrical characteristics (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

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