Rainbow-electronics BA178MххT_FP Manual do Utilizador descarregar pdf (Página 9)

BA178M!!T / BA178M!!FP series

Regulator ICs

"

""

"

Measurement circuits

V

OUTPUTINPUT

COMMON

0.1µF

0.33µF

100µF

V

IN

V

I

O

e

OUT

10Ω5W

e

IN

=1Vrms

f=120Hz

Ripple rejection ratioR.R.=20 log

e

IN

e

OUT

()

Fig. 2

Measurement

circuit for ripple rejection ratio

Fig. 3

Measurement

circuit for output noise voltage

OUTPUTINPUT

COMMON

0.1

0.33µF

I

O

V

IN

Noise

meter

BPF

10Hz

~

100kHz

10µF

+

µF

Fig. 4

Measuremen

t circuit for Minimum

I/O voltage differential

V

OUTPUTINPUT

COMMON

0.1µF0.33µF

I

O

V

IN

V

500mA

∆V=

100mV

Fig. 5

Measurement

circuit for bias current

and bias current change

I

O

V

0.1 µF0.33 µF

V

IN

A

OUTPUTINPUT

COMMON

Fig. 6

Measuremen

t circuit for

Fig. 10output short-circuit current

A

OUTPUT

INPUT

COMMON

0.1µF0.33µF

I

O

V

IN

V

OUTPUTINPUT

COMMON

0.1µF

0.33µF

I

O

V

IN

Fig. 1

Measurement

circuit for output voltage,

input stability, load regulation,

temperature coefficient of output voltage

"

""

"Electrical characteristic curves

OUTPUT VOLTAGE : V

OUT

(V)

OUTPUT CURRENT : I

OUT

(A)

V

IN

=10V

BA178M05T

10

8

6

4

2

0 0.2 0.4 0.6 0.8 1.0

Fig. 7 Current limit characteristics

OUTPUT VOLTAGE : VOUT (V)

JUNCTION TEMPERATURE : Tj (°C)

6

5

4

3

2

1

0

25 50 75 100 125 150 175 200

BA178M05T

V

IN=10V, IOUT=0

Fig. 8 Thermal cutoff circuit

characteristics

25

20

15

10

5

0 25 50 75 100 125 150

POWER DISSIPATION : Pd (W)

(3) 6.5

(4) 2.0

AMBIENT TEMPERATURE : Ta (°C)

(1) 22.0

(2) 11.0

Fig.9 Thermal derating characteristic

(TO220FP)

(1) Infinite heat sink, θj−c = 5.7 (

°C

/ W)

(2) 100

×

100

×

2 (mm

3

), with Al heat sink

(3) 50

×

50

×

2 (mm

3

), with Al heat sink

(4) No heat sink θj−a = 62.5 (

°C

/ W)

1 2 3 4 5 6 7 8 9 10 11

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