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

Número de pieza

componentes Descripción

Fabricante

ALTAIR04-900TR
(Rev.:2011)

Off-line all-primary-sensing switching regulator

STMicroelectronics 

ALTAIR04-900

Electrical characteristics

Figure 3.

COSS Output capacitance variation

C (pF)

500

OSS

400

300

200

100

0

0

25

50

75

100

125

150

V (V)

DS

Figure 4. Off state drain and source current test circuit

I q(f ault ) A

1 5V

A I dss

2. 5V +

-

F B/ Z C D

C OMP

VD D

D R AI N

C U R R EN T

C ON TR OL

I R EF

GND SOURCE

850 V

Note:

The measured IDSS is the sum between the current across the start-up resistor and the

effective MOSFET’s off state drain current

Figure 5. Start-up current test circuit

Ic cst art-up A

1 1.8 V

2. 5V +

FB/ZCD -

C OMP

VDD

D R AIN

C U R R EN T

C ON TR OL

IR EF

GND SOURCE

Doc ID 18211 Rev 2

9/29

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