LB11921T datasheet(2/18 Pages) ONSEMI

Teilenummer	LB11921T

Bauteilbeschribung	Three-Phase Brushless Motor Driver

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LB11921T

No.A0604-2/18

Allowable Operating Ranges

at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

FG Schmitt output applied voltage

VFGS

0 to 7

V

FG Schmitt output current

IFGS

0 to 5

mA

Lock detection applied voltage

VLD

0 to 7

V

Lock detection output current

ILD

0 to 20

mA

Supply voltage

VCC

4.4 to 7.0

V

Electrical Characteristics

at Ta = 25

°C, VCC = 5V

Ratings

Parameter

Symbol

Conditions

min

typ

max

unit

Supply current 1

ICC1

23

32

mA

Supply current 2

ICC2

In stop mode

2.1

2.9

mA

Output Block

Output saturation voltage 1-1

VOsat1-1

At low level: IO = 500μA

0.1

0.2

V

Output saturation voltage 1-2

VOsat1-2

At low level: IO = 5mA

0.3

0.5

V

Output saturation voltage 2-1

VOsat2-1

At high level: IO = -500μA

VCC-0.2

VCC-0.1

V

Output saturation voltage 2-2

VOsat2-2

At high level: IO = -5mA

VCC-0.4

VCC-0.2

V

Hall Amplifier

Input bias current

IHB(HA)

-2

-0.1

μA

Common-mode input voltage range 1

VICM1

When Hall-effect sensors are used

0.5

VCC-2.0

V

Common-mode input voltage range 2

VICM2

When one-side biased inputs are used

(Hall-effect IC applications)

0

VCC

V

Hall input sensitivity

Sine wave

50

mVp-p

Hysteresis

ΔVIN(HA)

9

15

26

mV

Input voltage low

→ high

VSLH

47

13

mV

Input voltage high

→ low

VSHL

-13

-8

-4

mV

PWM Oscillator

Output high-level voltage

VOH(PWM)

2.75

3.0

3.25

V

Output low-level voltage

VOL(PWM)

1.45

1.65

1.9

V

Oscillator frequency

f(PWM)

C = 680pF

23

kHz

Amplitude

V(PWM)

1.1

1.35

1.6

Vp-p

CSD Oscillator

Output high-level voltage

VOH(CSD)

3.15

3.5

3.85

V

Output low-level voltage

VOL(CSD)

0.9

1.1

1.3

V

External capacitor charge current

ICHG1

-9.0

-6.5

-3.9

μA

External capacitor discharge current

ICHG2

2.4

4.0

6.0

μA

Oscillator frequency

f(RK)

C = 0.047

μF

20

Hz

Amplitude

V(RK)

2.1

2.4

2.65

Vp-p

VCO Oscillator C pin

Output high-level voltage

VOH(C)

2.00

2.30

2.55

V

Output low-level voltage

VOL(C)

1.55

1.80

2.05

V

Oscillator frequency

f(C)

1.2

MHz

Amplitude

V(C)

0.3

0.5

0.7

Vp-p

Continued on next page.

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