L6235 datasheet(9/35 Pages) STMICROELECTRONICS

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L6235

Electrical characteristics

Symbol

Parameter

Test conditions

Min. Typ.

Max.

Unit

PWM comparator and monostable

IRCOFF Source current at pin RCOFF

VRCOFF = 2.5 V

3.5

5.5

VOFFSET Offset voltage on sense comparator

Vref = 0.5 V

±5

tprop

Turn OFF propagation delay(3)

Vref = 0.5 V

500

tblank

Internal blanking time on sense comparator

µs

tON(min) Minimum on time

1.5

µs

tOFF

PWM recirculation time

ROFF = 20 k; COFF 1 nF

s

ROFF= 100 k; COFF 1 nF

s

IBIAS

Input bias current at pin VREF

µA

TACHO monostable

IRCPULSE Source current at pin RCPULSE

VRCPULSE = 2.5 V

3.5

5.5

tPULSE Monostable of time

RPUL = 20 k; CPUL 1 nF

s

RPUL = 100 k; CPUL 1 nF

s

RTACHO Open drain ON resistance

Overcurrent detection and protection

ISOVER Supply overcurrent protection threshold

TJ = -25 to 125 °C(6)

4.0

5.6

7.1

ROPDR Open drain ON resistance

IDIAG = 4 mA

IOH

OCD high level leakage current

VDIAG = 5 V

µA

tOCD(ON) OCD turn-ON delay time(4)

IDIAG = 4 mA; CDIAG < 100 pF

200

tOCD(OFF) OCD turn-OFF delay time(9)

IDIAG = 4 mA; CDIAG < 100 pF

100

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

2. SeeFigure 3: Switching characteristic definition.

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

4. See Figure 4: Overcurrent detection timing definition.

Table 5. Electrical characteristics (continued)

(VS = 48 V, Tamb = 25 °C, unless otherwise specified)

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