ALTAIR04-900(2011) Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

ALTAIR04-900
(Rev.:2011)

Off-line all-primary-sensing switching regulator

STMicroelectronics 

Electrical characteristics

Figure 6. Quiescent current test circuit

ALTAIR04-900

I q_ me as A

14 V

VD D

D R AI N

2.5 V +

FB/ZCD -

C U R R EN T

C ON TR OL

3 3k

C O MP

I R EF

GND SOURCE

0 .8V

3V

10k

0. 2V

Figure 7. Operating supply current test circuit

27k

220 k

10 k 10 k

Icc A

15 V

1 .5 k

2W

2. 5V +

FB/ZCD -

C O MP

VDD

D R AI N

C U R R EN T

C ON TR OL

I R EF

GND SOURCE

15 0V

10

50 kH z

-5V

2 .8 V

5 .6

Note:

The circuit across the ZCD pin is used for switch-on synchronization

Figure 8. Quiescent current during fault test circuit

I q(f au lt ) A

14V

2. 5V +

FB/ZCD -

C OMP

VDD

D R AIN

C U R R EN T

C ON TR OL

IR EF

GND SOURCE

10/29

Doc ID 18211 Rev 2

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