LB1975 datasheet(2/10 Pages) ONSEMI

部件名	LB1975

功能描述	3-phase Brushless Motor Driver

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制造商	ONSEMI [ON Semiconductor]

网页	http://www.onsemi.com

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LB1975

No.6087-2/10

Allowable Operating Ranges at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

VCC

4.5 to 6.7

V

Supply voltage range

VM

20 to 42

V

Input current range

IREG

VREG pin

1 to 5

mA

FG pin applied voltage

VFG

0 to VCC

V

FG pin output current

IFG

0 to 10

mA

Electrical Characteristics at Ta

= 25°C, VCC = 5V, VM = 30V

Ratings

Parameter

Symbol

Conditions

min

typ

max

Unit

Supply current

ICC

10

14

18

mA

Output Block

VOsat1(L)

IO = 1.0A, VO(sink)

1.1

1.4

V

VOsat1(H)

IO = 1.0A, VO(source)

0.9

1.3

V

VOsat1

IO = 1.0A, VO(sink) + VO(source)

2.0

2.6

V

VOsat2(L)

IO = 2.0A, VO(sink)

1.4

1.8

V

VOsat2(H)

IO = 2.0A, VO(source)

1.2

1.7

V

Output saturation voltage

VOsat2

IO = 2.0A, VO(sink) + VO(source)

2.6

3.4

V

IOLeak(L)

100

μA

Output leak current

IOLeak(H)

-100

μA

VFH1

IO = 1.0A

1.2

1.6

V

Upper side diode forward voltage

VFH2

IO = 2.0A

2.1

2.6

V

Hall Amplifier

Input bias current

IHB

-4

-1

μA

Common-mode input voltage range

VICM

1.5

VCC-1.5

V

Hall input sensitivity

VHIN

60

mVp-p

Hysteresis width

ΔVIN(HA)

23

32

39

mV

Input voltage (low to high)

VSLH

6

16

25

mV

Input voltage (high to low)

VSHL

-25

-16

-6

mV

FG Pin (speed pulse output)

Output low-level voltage

VFGL

IFG = 5mA

0.5

V

Pull-up resistor value

RFG

7.5

10

12.5

k

Ω

Current Limiter

Limiter

VRF

0.45

0.50

0.55

V

Thermal Shutdown

Thermal shutdown operating

temperature

TSD

Design target Value (junction temperature)

150

180

°C

Hysteresis width

ΔTSD

Design target Value (junction temperature)

40

°C

Low-Voltage Protection

Operating voltage

VLVSD

3.5

3.8

4.1

V

Non-operating voltage

VLVSD(OFF)

4.3

4.5

V

Hysteresis width

ΔVLVSD

0.4

0.5

0.6

V

PWM Oscillator

Output high-level voltage

VOH(OSC)

2.95

3.10

3.25

V

Output low-level voltage

VOL(OSC)

1.38

1.45

1.59

V

Amplitude

VOSC

1.50

1.65

1.71

Vp-p

Oscillator frequency

fOSC

C = 2200pF

19.6

23.0

27.6

kHz

Charge current

ICHG

-110

-94

-83

μA

Discharge resistance

RDCHG

1.6

2.1

2.6

k

Ω

VREG Pin

Pin voltage

VREG

IREG = 1.5mA

6.6

7.0

7.2

V

Continued on next page.

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