ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

Maximum supply voltage

15

V

Maximum supply voltage

7

V

Maximum input voltage

±0.3

V

Minimum input voltage

GND - 0.3

V

Peak sink/source output current

3

A

DC sink/source output current

1.7

A

Maximum total power dissipation

≅1.7

W

Operative temperature range

0 to 80

°C

THERMAL DATA

Symbol

Parameter

Value

Unit

Thermal resistance junction to case

≅20

°C/W

Thermal resistance junction to ambient mounted on standard PCB (*)

≅66

°C/W

Thermal resistance junction to ambient mounted on PCB (**)

≅35

°C/W

(*) Standard board construction: single layer (1S 0P); size 100mm long by 100mm wide.

(**) The board construction includes: a 6 layer board (2S 4P, with power planes

≅80%); size 136mm long by 99mm wide; package location

near middle point of lenght and one third of width.

PIN FUNCTIONS

Pin

Name

Description

1

N.C.

Not Connected.

2

Filter_cap

Filter capacitor for 10V internal regulator. The capacitor is optional.

3

Brake Delay

Voice Coil Motor brake delay capacitor.

4

-Thermal SD

Pre Thermal Shut Down indication Output.

5

Sense_in+

Non inverting Input of Sense Amplifier.

6

Sense_in-

Inverting Input of Sense Amplifier.

7

Gnd

Ground.

8

Err_out

Error Amplifier Output.

9

Err-

Inverting Input of Error Amplifier.

10

Sense_out

Output of Sense Amplifier.

11

N.C.

Not Connected.

12

Vin_out

Output of Input Amplifier.

13

Vin-

Inverting Input of Input Amplifier.

14

Vin+

Non inverting Input of Input Amplifier.

15

+Vcc/2

Half Supply Voltage reference.

16

+Motor start

Motor start Output to Spindle Controller.

17

-AE_W_Gate

Write Gate Output to AE.

18

+Vdd

+5V Supply.

19

+Vcc

+12V Supply.

20

-POR

Power On Reset. Low will signal the failure of the logic supply or 12V supply

21

+5V Ref

+5V Reference Output from the Voltage Reference Regulator.

22

T_cap

Power On Reset Timing Capacitor. The capacitor sets the POR delay.

23

N.C.

Not Connected.

24

+5V Ref Gnd

Ground for Voltage Reference Generator.

25

+5Setpt

+5V Monitor Set Point and filtering

L6246

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