LB1945D

No.7633-2/9

Recommended Operating Range at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

Motor supply voltage

VBB

10 to 28

V

Logic system supply voltage

VCC

4.75 to 5.25

V

Reference voltage

VREF

1.5 to 5.0

V

Electrical Characteristics at Ta

= 25°C, VBB = 24V, VCC = 5V, VREF = 5V

Ratings

Parameter

Symbol

Conditions

min

typ

max

Unit

Output block

Output stage supply current

IBB ON

IBB OFF

I1 = 0.8V, I2 = 0.8V, ENABLE = 0.8V

ENABLE = 3.2V

0.5

1.0

2.0

0.2

mA

Output saturation voltage 1

VO sat1

IO = +0.5A, sink side

0.3

0.5

V

Output saturation voltage 2

VO sat2

IO = +0.8A, sink side

0.5

0.7

V

Output saturation voltage 3

VO sat3

IO = -0.5A, source side

1.6

1.8

V

Output saturation voltage 4

VO sat4

IO = -0.8A, source side

1.8

2.0

V

Output leakage current

VO1(leak)

VO2(leak)

VO = VBB, sink side

VO = 0V, source side

-50

50

μA

Output sustain voltage

VSUS

L = 3.9mH, IO = 1.0A*

30

V

Logic block

Logic supply current

ICC ON

ICC OFF

I1 = 0.8V, I2 = 0.8V, ENABLE = 0.8V

ENABLE = 3.2V

50

7

70.0

10.0

92

13

mA

Input voltage

VIH

VIL

3.2

1.8

V

Input current

IIH

IIL

VIH = 3.2V

VIL = 0.8V

35

7

50

10

65

13

μA

Set current control threshold

value

VREF/

VSEN

I1 = 0.8V, I2 = 0.8V

I1 = 3.2V, I2 = 0.8V

I1 = 0.8V, I2 = 3.2V

9.5

13.5

25.5

10

15

30

10.5

16.5

34.5

Reference current

IREF

VREF = 5.0V, I1 = 0.8V, I2 = 0.8V

17.5

25

32.5

μA

CR pin current

ICR

CR = 1.0V

-1.0

μA

Thermal shutdown temperature

TS

170

°C

Thermal shutdown hysteresis

TSHY

40

°C

*: The design specification items are design guarantees and are not measured.

Package Dimensions

unit:mm (typ)

3147C

SANYO : DIP28H(500mil)

1

14

28

15

0.6

26.75

20.0

R1.7

(1.81)

1.78

1.0

0

2.5

3.0

2.8

1.5

0.5

1.0

2.0

3.5

-20

100

80

60

20

40

0

1.34

Ambient temperature, Ta – °C

Pd max – Ta

Independent IC