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TDA5341

Brushless DC motor and VCM drive circuit with speed control

Philips Electronics 

Philips Semiconductors

Brushless DC motor and VCM drive circuit

with speed control

Product specification

TDA5341

CHARACTERISTICS (RESET FUNCTION)

VDD = 5 V; VDD1 and VDD2 > VDD is not allowed; Tamb = 25 °C; unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

UVDIN1; pin 44

IUVDIN1

load capacitance current to

control the reset pulse width

VUVDIN1

input voltage threshold to

activate the reset output

−2.3

−1.7

2.4

2.55

UVDIN2; pin 54

VUVDIN2

comparator voltage for

power-up and power-down

detection

IUVDIN2

input current

RESETOUT; pin 43

VPTH

tdPU

power threshold voltage

power-up reset delay

tdPD

tPDW

tW(min)

Rpu

VOL

power-down reset delay

power-down reset pulse width

minimum output pulse width

pull-up resistance

LOW level output voltage

see Fig.8

VUVDIN2 = 1.6 V

see Fig.9

C = 0.1 µF;

see Fig.9

see Fig.9

see Fig.9

C = 0.1 µF

IOL = 8.5 mA

1.280 1.315

−0.5

−

−

4.25

100

150

−

−

1.0

−

100

−

6

10

−

−

MAX.

UNIT

−1.3

µA

2.75

V

1.340 V

+0.5

µA

−

V

200

ms

4

µs

4

µs

−

ms

14

kΩ

0.5

V

handbook, halfpage

R2

R1

VDD

UVDIN2

MGE818

under-voltage threshold = 1.32 × --(--R-----2--R---+--1---R----1----)-

Fig.8 Reset mode threshold.

1997 Jul 10

19

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