HV9982 Ver la hoja de datos (PDF) - Supertex Inc

Número de pieza

componentes Descripción

Fabricante

HV9982

Three-Channel, Closed-Loop, Switch Mode LED Driver IC

Supertex Inc 

HV9982

Electrical Characteristics (cont.)

Sym Parameter

Min Typ Max Units Conditions

Disconnect Driver (FAULT1, FAULT2 and FAULT3)

TRISE,FAULT

TFALL,FAULT

Fault output rise time

Fault output fall time

--

--

- 450 ns 330pF capacitor at FAULT pin

- 200 ns 330pF capacitor at FAULT pin

Short Circuit Protection (all three channels)

T

BLANK,SC

GSC

Vomin

TOFF

Blanking time

Gain for short circuit comparator

Minimum current limit threshold

Propagation time for short circuit

detection

* 400 - 700 ns ---

- 1.85 2.0 2.15 - ---

# 0.15 - 0.25 V REF = GND

--

- 250 ns FDBK = 2 • REF + 0.1V

HICCUP timer

IHC,SOURCE

Current source at SKIP pin used for

hiccup mode protection

--

10

-

μA ---

VTH(H)

V

TH(L)

High threshold at SKIP pin

Low threshold at SKIP pin

# - 5.0 -

# - 0.1 -

V ---

V ---

CRAMP for Analog Control of PWM Dimming

FRAMP,min Minimum frequency

FRAMP,max Maximum frequency

V

Voltage of ramp

RAMP

- - 110 -

- - 1250 -

- 0.1 - 1.9

Hz CRAMP = 10nF

Hz CRAMP = 1.0nF

V ---

# Denotes specifications guaranteed by design.

* The specifications which apply over the full operating temperature range at 0OC < TA < +85OC are guaranteed by design and characterization.

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