VN380SP datasheet(4/9 Pages) STMICROELECTRONICS

4 / 9 page

ELECTRICAL CHARACTERISTICS (continued)

PROTECTIONS AND DIAGNOSTICS

Symb ol

Parameter

Test Cond ition s

Mi n.

Typ .

Max.

Un it

Ttsd

Thermal Shut-Down

Temperat ure

160

180

200

Ilim

Current Cut Off Level

Vov

Over Volt age Threshold VinA = Vin B =5 V

Vdiag

St atus O utput Voltage

Diagnost ic O utput Act ive (low)

Idiag = 2 mA

0.5

Vd iag(CL)

St atus O utput Clamp

Voltage

Idiag = 10 mA

9.5

St atus Propagation

Delay

Demagnet ization Mode

(F ast turn-of f)

Vdiag = 1 V (see figure 3)

µs

Vcl1

Switch S1 Detection

Clamp

Iload = In = 5 A

607080

Vcl2

Output Inductive

Clamp Volt age

Iload = In = 5 A

28. 5

Vfb

Flyback Diagnostic

Threshold

Demagnet ization Mode

(F ast turn-of f)

Vcl = Vcl1 or Vcl2

Vcl -5

Vcl

Iol

Oper Load Current

Level

5700

TRUTH TABLE

Co ndi ti ons

I N A

I N B

Standby Modes

OF F

Excitation Mode

OF F

Recirculation Mode

OF F

Demagnetizat ion Mode

(Fast turn off)

Vpwr2 +Vcl2 <Vcl1

Vpwr2 +Vcl2 >Vcl1

OF F

T hermal Shut down

OF F

Current Cut Off

OF F

O pen Load

See Open Load W aveforms

O vervoltage

OF F

VN380

4/9

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