L6208 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

L6208

DMOS driver for bipolar stepper motor

STMicroelectronics 

L6208

Electrical characteristics

Symbol

Table 5. Electrical characteristics

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

Parameter

Test conditions

Min. Typ. Max. Unit

tCLK(min)H

fCLK

tS(MIN)

tH(MIN)

tR(MIN)

tRCLK(MIN)

tDT

fCP

Minimum clock time(4)

Clock frequency

Minimum setup time(5)

Minimum hold time(5)

Minimum reset time(5)

Minimum reset to clock delay time(5)

Deadtime protection

Charge pump frequency

Tj = -25 °C to 125 °C(1)

1 µs

100 KHz

1 µs

1 µs

1 µs

1 µs

0.5 1

µs

0.6 1 MHz

PWM comparator and monostable

IRCA, IRCB

Voffset

tPROP

tBLANK

tON(MIN)

Source current at pins RCA and RCB

Offset voltage on sense comparator

Turn OFF propagation delay(6)

Internal blanking time on SENSE pins

Minimum On time

tOFF PWM recirculation time

IBIAS

Input bias current at pins VREFA and

VREFB

Overcurrent protection

VRCA = VRCB = 2.5 V

3.5 5.5

mA

VREFA, VREFB = 0.5 V

±5

mV

500

ns

1

µs

1.5 2 µs

ROFF = 20 KCOFF = 1 nF

13

µs

ROFF = 100 KCOFF = 1 nF

61

µs

10 µA

ISOVER

Input supply overcurrent protection

threshold

Tj = -25 °C to 125 °C(1)

4 5.6 7.1 A

ROPDR

tOCD(ON)

tOCD(OFF)

Open drain ON resistance

OCD turn-on delay time(7)

OCD turn-off delay time(7)

I = 4 mA

I = 4 mA; CEN < 100 pF

I = 4 mA; CEN < 100 pF

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

2. See Figure 3: Switching characteristic definition.

3. See Figure 4: Clock to output delay time.

4. See Figure 5: Minimum timing definition; clock input.

5. See Figure 6: Minimum timing definition; logic inputs.

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

7. See Figure 7: Overcurrent detection timing definition.

40 60 W

200

ns

100

ns

DocID7514 Rev 2

9/35

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