NCV70521MN003G datasheet(8/28 Pages) ONSEMI

Part #	NCV70521MN003G

Description	Micro-Stepping Motor Driver

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AMIS−30521, NCV70521

http://onsemi.com

8

Table 6. AC PARAMETERS (AC Parameters are Given for VBB and Temperature in Their Operating Ranges)

Symbol

Pin(s)

Parameter

Remark/Test Conditions

Min

Typ

Max

Unit

INTERNAL OSCILLATOR

fosc

Frequency of Internal Oscillator

3.6

4

4.4

MHz

MOTORDRIVER

fPWM

MOTxx

PWM Frequency

Frequency Depends Only on

Internal Oscillator

20.8

22.8

24.8

kHz

Double PWM Frequency

41.6

45.6

49.6

kHz

fd

PWM Jitter Depth (Note 13)

10

% fPWM

Tbrise

MOTxx Turn−On Voltage Slope, 10% to 90%

(Note 13)

EMC[1:0] = 00

150

V/ms

EMC[1:0] = 01

100

V/ms

EMC[1:0] = 10

50

V/ms

EMC[1:0] = 11

25

V/ms

Tbfall

MOTxx Turn−off Voltage Slope, 90% to 10%

(Note 13)

EMC[1:0] = 00

150

V/ms

EMC[1:0] = 01

100

V/ms

EMC[1:0] = 10

50

V/ms

EMC[1:0] = 11

25

V/ms

DIGITAL OUTPUTS

TH2L

DO

ERR

Output Falltime from VinH to VinL

Capacitive Load 400 pF and

Pullup Resistor of 1.5 kW

50

ns

CHARGE PUMP

fCP

CPN

CPP

Charge Pump Frequency

250

kHz

TCPU

MOTxx Startup Time of Charge Pump (Note 14) Spec External Components

5

ms

CLR FUNCTION

tCLR

CLR

Minimum Time for Hard Reset

100

ms

NXT FUNCTION

tNXT_HI

NXT

NXT Minimum, High Pulse Width

See Figure 4

2.0

ms

tNXT_LO

NXT Minimum, Low Pulse Width

See Figure 4

2.0

ms

tDIR_SET

NXT Hold Time, Following Change of

DIR

See Figure 4

2.0

ms

tDIR_HOLD

NXT Hold Time, Before Change of DIR

See Figure 4

2.0

ms

13.Characterization Data Only

14.Guaranteed by design.

DIR

NXT

VALID

tNXT_HI

tNXT_LO

tDIR_SET

tDIR_HOLD

0.5 VCC

Figure 4. NXT−Input Timing Diagram

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