NCV70514

www.onsemi.com

6

EQUIVALENT SCHEMATICS

The following figure gives the equivalent schematics of the user relevant inputs and outputs. The diagrams are simplified

representations of the circuits used.

VDD

VBB

DIGITAL

IN

Ipd

MOT

OUT

DIGITAL

OUT

ERRB,

DO

DI, CLK,

NXT, DIR,

RHB,

STEP0,

STEP1,

(CSB)

MOTXP,

MOTXN,

MOTYN,

MOTYP

Figure 4. Input and Output Equivalent Diagrams

ELECTRICAL CHARACTERISTICS

DC PARAMETERS

The DC parameters are guaranteed over junction temperature from −40 to 145

°C and VBB in the operating range from 6

to 29 V, unless otherwise specified. Convention: currents flowing into the circuit are defined as positive.

Table 6. DC PARAMETERS

Symbol

Pin(s)

Parameter

Test Conditions

Min

Typ

Max

Unit

MOTORDRIVER

max,Peak

MOTXP

MOTXN

MOTYP

MOTYN

Max current through motor coil in

normal operation

800

mA

Absolute error on coil current

(Note 15)

−10

10

%

Matching of X & Y coil currents

(Note 15)

−7

7

%

On resistance of High side + Low side

Driver at the highest current range

1.8

W

2.4

W

Motor pin pull−down resistance

HiZ mode

70

k

W

LOGIC INPUTS

DI, CLK,

NXT,

DIR,

RHB,

STEP0,

STEP1

Logic low input level, max

0.8

V

Logic high input level, min

2.4

V

Logic low input level, max

−1

mA

Logic high input level, max

1

2

4

mA

15. Tested in production for 800 mA, 400 mA, 200 mA and 100 mA current settings for both X and Y coil.

16. CSB has an internal weak pull−up resistor of 100 k

W.

19. Parameter guaranteed by trimming relevant OTPs in production test at 160

20. Dynamic current is with oscillator running, all analogue cells active. Coil currents 0 mA, SPI active, ERRB inactive, no floating inputs, TST

input tied to GND.

21. All analog cells in power down. Logic powered, no clocks running. All outputs unloaded, no floating inputs.

22. Pin VDD must not be used for any external supply.

23. The SPI registers content will not be altered above this voltage.

24. Maximum allowed drain current that the output can withstand without getting damaged. Not tested in production.