L6227Q datasheet(8/27 Pages) STMICROELECTRONICS

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Electrical characteristics

L6227Q

8/27

PWM comparator and monostable

IRCA, IRCB Source current at pins RCA and RCB

VRCA = VRCB = 2.5 V

3.5

5.5

Voffset

Offset voltage on sense comparator

VREFA, VREFB = 0.5 V

±5

tPROP

Turn OFF propagation delay (3)

500

tBLANK

Internal blanking time on SENSE pins

µs

tON(MIN)

Minimum on time

2.5

µs

tOFF

PWM recirculation time

ROFF = 20 kΩ; COFF = 1 nF

µs

ROFF = 100 kΩ; COFF = 1 nF

µs

IBIAS

Input bias current at pins VREFA and

VREFB

µA

Over current protection

ISOVER

Input supply overcurrent protection

threshold

TJ = -25 °C to 125 °C

(1)

2.8

ROPDR

Open drain ON resistance

I = 4 mA

Ω

tOCD(ON)

OCD turn-on delay time (4)

I = 4 mA; CEN < 100 pF

200

tOCD(OFF)

OCD turn-off delay time (4)

I = 4 mA; CEN < 100 pF

100

Tested at 25 °C in a restricted range and guaranteed by characterization.

See Figure 3 on page 9

Measured applying a voltage of 1 V to pin SENSE and a voltage drop from 2 V to 0 V to pin VREF.

See Figure 4 on page 9

Table 5.

Electrical characteristics (continued) (TA = 25 °C, Vs = 48 V, unless otherwise specified)

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

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