TDA1154 datasheet(3/6 Pages) STMICROELECTRONICS

Numer części	TDA1154

Szczegółowy opis	SPEED REGULATOR FOR DC MOTORS

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Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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3 / 6 page

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

V(ref)

Reference voltage

VCC = +6V

I(8) = 0.1A

1.15

1.25

1.35

V

∆ V(ref)

V(ref)

/∆ T

Reference voltage

temperature coefficient

VCC = +6V I(8) = 0.1A

Tamb = -20

°C to +70°C

-

0.02

-

%/

°C

∆ V(ref)

V(ref)

/∆ VCC

Line regulator

VCC = +4V to +18V

I(8) = 0.1A

-

0.02

-

%/V

∆ V(ref)

V(ref)

/∆ | (8)

Load regulator

VCC = +6V

l(8) = 25 to 400 mA

-

0.009

-

%/mA

V (5 - 3)

Minimum supply voltage

|

(8)= 0.1A

∆ V(ref)

V(ref)

=−5%

2.5

-

V

I(8)

Starting current(*)

∆ V(ref)

V(ref)

=−50%

VCC = +5V

1.2

-

A

VCC = +2.5V

0.5

0.8

-

IO (5)

Quiescent current on pin 5

VCC = +6V

I(8) = 100

µA

-

1.7

-

mA

K

=

∆|

(8)

∆| (5)

reflection

coefficient

VCC = +6V

I(8) = 0.1A

18

20

22

∆ K

K

/∆ VCC

K spread versus VCC

VCC = +6V to +18V

I(8) = 0.1A

-

0.45

-

%/V

∆ K

K

/∆

|(8)

K spread versus I(8)

VCC = +6V

I(8) = 25 to 400 mA

-

0.005

-

%/mA

∆ K

K

/∆ T

K spread versus temperature

VCC = +6V I(8) = 0.1A

Tamb = +20

°Cto +70°C

-

0.02

-

%/

°C

ELECTRICAL CHARACTERISTICS Tamb = +25

°C (Unless otherwise specified)

(*) An internal protection circuit reduces the current if the temperature of the junction increase: I(8) = 0.75A at Tj = +140

°C

OPERATING MODE

The circuit maintains a 1.2V costant reference volt-

age between pins 5 and 8:

V(5 - 8) = V(ref) = 1.2V

The current (I(5)) drawn by the circuit at pin 5 is

sum of two currents.

One is constant: IO(5) = 1.7mA and the other is

proportional to pin 8 current (I(8)):

I(5) = IO(5) +I(8)K(a)

(IO(5) = 1.7mA, K = 20)

Figure 3

3/6

TDA1154

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