L7250 데이터 시트보기 (PDF) - STMicroelectronics

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L7250

5V & 12V SPINDLE AND VCM MOTORS DRIVER

STMicroelectronics 

L7250

ELECTRICAL CHARACTERISTCS (continued)

POWER SUPPLY [VCC5 & VCV] VCC5 = 5V ±10%, VCV = 12V ±10%. Tamb = 25°C (unless otherwise specified)

Symbol

Parameter

Test Condition

Min. Typ. Max. Unit

NPORpull NPOR internal pull_up resistor to

V33

6

Kohm

CPORIc CPOR charging current

Vout = 0V

5

uA

CPORlow CPOR low level output voltage VCV > 4.5V Iol = 1mA

50

mV

Vref25 2.5V reference voltage

-5%

2.5 +5%

V

THERMAL WARNING AND THERMAL SHUTDOWN

Twarn Thermal warming temperature

Characterized, tested by

correlation.

130 140 150

°C

Tsoff Thermal Shutdown temperature Characterized, tested by

correlation

150 165 180

°C

Thys Thermal Hysteresis

valid for both temperature

thresholds

20

25

30

°C

VM ISOLATION FET

IsoR Rds ON

@ 125°C , I=2.5A

0.1 Ohm

IsoI Continuous current

2.5

A

SPINDLE DRIVER SECTION

POWER STAGE

Rds(on) Total output ON resistance

(Source + Sink)

@ 125°C, I=2.5A

Idsx Output leakage current

CTlkg Centarl tap leakage

DiodeFw Clamp diode forward voltage

If = 2.5A

Slew Output slew rate

OUTx 10% to 90%

Reg04H ‘b7b6b5’ = 011

BACK EMF COMPARATOR

Vie Common mode input voltage

range.

Guaranteed by design

Vr Input voltage range where output Guaranteed by design

shall not invert.

BEMFoff BEMF input offset

CT = 6V

BEMFhy BEMF hysteresys

CT = 6V

SPINDLE CURRENT LIMITING

Iin RSENSE Input bias current.

0 < Vin < 3.3V

CURoff Comparator offset

0.9

Ω

-200 -500 µA

1

µA

0.6

1.2

V

40

V/µS

0

VM

V

-1

VM+1 V

-15

+15 mV

50

mV

1

µA

-15

+15 mV

6/46

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