NCV7705 datasheet(13/38 Pages) ONSEMI

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NCV7705(A), NCV7706

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ELECTRICAL CHARACTERISTICS (continued)

4.5 V < VCC < 5.25 V, 8 V < Vs < 18 V, −40°C < TJ < 150°C; unless otherwise noted.

Symbol

Unit

Max

Typ

Min

Test Conditions

Parameter

CURRENT SENSE MONITOR OUTPUT ISOUT/PWM2

Vis

Current Sense output functional

voltage range

VCC = 5 V, Vs = 8−20 V

VCC − 0.5

Kis

Current Sense output ratio OUT1/4

K = Iout / Iis,

0 V

v Vis v 4.5 V, VCC = 5 V

12000

Current Sense output ratio OUT9

and 5 (low on−resistance bulb

mode)

10000

Current Sense output ratio OUT6

(low on−resistance bulb mode)

5000

Current Sense output ratio OUT7/8

and 5/6 (high on−resistance LED

mode)

2000

Iis,acc

(Notes 6 and 7)

Current Sense output accuracy

OUT1/4

0.3 V

v Vis v 4.5 V, VCC = 5 V

Iout1/4 = 0.5−2.9 A

−12.5% −

1% FS

12.5% +

1% FS

Current Sense output accuracy

OUT5/6 (low on−resistance bulb

mode)

0.3 V

v Vis v 4.5 V, VCC = 5 V

Iout5 = 0.5−1.3 A,

Iout6 = 0.25−0.65 A

−14% −

1% FS

14% +

1% FS

Current Sense output accuracy

OUT5/6 (high on−resistance LED

mode)

0.3 V

v Vis v 4.5 V, VCC = 5 V

Iout5,6 = 0.1−0.3 A

−14% −

1% FS

14% +

1% FS

Current Sense output accuracy

OUT7/8

0.3 V

v Vis v 4.5 V, VCC = 5 V

−8% −

1.5% FS

8% +

1.5% FS

Current Sense output accuracy

OUT9

0.3 V

v Vis v 4.5 V, VCC = 5 V

Iout9 = 0.5−5.9 A

−10% −

1.5% FS

10% +

1.5% FS

tis_blank

Current Sense blanking time

Blanking time after current sense

selection or driver activation

tis

Current Sense settling time

0 V to FSR (full scale range)

230

265

6. Current sense output accuracy = Isout−Isout_ideal relative to Isout_ideal

7. FS (Full scale) = Ioutmax/Kis

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