PBL 3770A

8

Sensor resistor

The R

inductive type power resistor. A 0.5 ohm

resistor, tolerance

≤ 1%, is a good

choice for 800 mA max motor current at

V

The peak motor current, i

calculated by using the formula:

i

at 100% level

External recirculation diodes

Recirculation diodes must be connected

across each motor terminal and the

supply voltage, V

connected to the motor terminals and

the cathodes to the V

fast recovery diodes should be used for

maximum performance and reliability.

Ordering Information

Package

Part No.

DIP Tube

PBL 3770ANS

PLCC Tube

PBL 3770AQNS

PLCC Tape & Reel

PBL 3770AQNT

SO Tube

PBL 3770ASOS

SO Tape & Reel

PBL 3770ASOT

Information given in this data sheet is believed to be

accurate and reliable. However no responsibility is

assumed for the consequences of its use nor for any

infringement of patents or other rights of third parties

which may result from its use. No license is granted

by implication or otherwise under any patent or

patent rights of Ericsson Components AB. These

products are sold only according to Ericsson

Components' general conditions of sale, unless

otherwise confirmed in writing.

Specifications subject to change

without notice.

1522-PBL 3770/6Uen. Rev E

© Ericsson Components AB 1999

Figure 15. Copper foil used as a heatsink.

Figure 14. Heatsinks, Staver, type V7 and V8 by Columbia-Staver UK.

Figure 12. Typical power dissipation vs.

motor current.

2.0

1.5

1.0

.5

0

0

.50

1.0

1.5

2.5

3.0

Figure 13. Allowable power dissipation

vs. ambient temperature.

50

150

0

2.0

4.0

3.0

1.0

100

With

Staver

V8

(37.5

°C/W)

PCB

heatsink

(40

°C/W)

Ericsson Components AB

SE-164 81 Kista-Stockholm, Sweden

Telephone: +46 8 757 50 00

38.0

mm

18,5 mm

38.0

mm

33,5 mm

Thermal resistance [

°C/W]

PCB copper foil area [cm ]

2

90

80

70

60

50

40

30

510

15

20

30

35

25

PLCC package

DIP package

16-pin

DIP

20-pin

SO

28-pin

PLCC