ALTAIR04-900TR Просмотр технического описания (PDF) - STMicroelectronics

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ALTAIR04-900TR

Off-line all-primary-sensing switching regulator

STMicroelectronics 

ALTAIR04-900

4

Electrical characteristics

Electrical characteristics

(TJ = -40 to 125 °C, Vcc = 14 V; unless otherwise specified)

Symbol

Table 4. Electrical characteristics

Parameter

Test conditions

Min. Typ. Max. Unit

Power section

V(BR)DSS Drain-source breakdown

IDSS Off-state drain current

RDS(on) Drain-source on-state resistance

Coss Effective (energy-related) output capacitance

High voltage start-up generator

ID< 100 µA; Tj = 25 °C

VDS = 850 V; Tj = 125 °C

(See Figure 4 and note)

Id=250 mA; Tj = 25 °C

Id=250 mA; Tj = 125 °C

(See Figure 3)

900

V

80 µA

16 19

Ω

38

VStart Min. drain start voltage

Icharge Vcc start-up charge current

VCCrestart Vcc restart voltage (Vcc falling)

Icharge < 100 µA

VDRAIN> VStart; Vcc < VccOn

Tj = 25 °C

VDRAIN> VStart; Vcc < VccOn

(1)

After protection tripping

40 50 60 V

4 5.5 7

mA

+/-10%

9.5 10.5 11.5

V

5

Supply voltage

Vcc Operating range

VccOn

VccOff

VZ

Turn-on threshold

Turn-off threshold

Zener voltage

Supply current

After turn-on

(1)

(1)

Icc = 20 mA

11.5

23 V

12 13 14 V

9 10 11 V

23 25 27 V

Iccstart-up Start-up current

Iq Quiescent current

Icc Operating supply current @ 50 kHz

Iq(fault) Fault quiescent current

(See Figure 5)

(See Figure 6)

(See Figure 7)

During hiccup and brownout

(See Figure 8)

200 300 µA

1 1.4 mA

1.4 1.7 mA

250 350 µA

Start-up timer

TSTART Start timer period

TRESTART Restart timer period during burst-mode

100 125 175 µs

400 500 700 µs

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