HV9980 데이터 시트보기 (PDF) - Supertex Inc

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HV9980

3-Channel LED Array Driver IC

Supertex Inc 

HV9980

Electrical Characteristics (cont.) (The specifications are at TA = 25°C and VDD = 8.0V, unless otherwise noted.)

Sym Parameter

Min Typ Max Units Conditions

Current Sense Comparators (CS1 - REF1, CS2 - REF2, CS3 - REF3)

VCS(LIM) Short circuit protection threshold * 1.0

TSKIP

Short circuit recovery delay

--

TBLANK Leading edge blanking delay

- 120

VOS

Input offset voltage

* -7.0

TDELAY Propagation delay CS-to-DRAIN *

-

TDELAY(LIM) Shutdown delay CS-to-DRAIN

*

-

- 1.3

200 -

- 220

- 7.0

- 150

- 0.5

V ---

µs ---

ns ---

mV ---

ns VCS - VREF = 50mV

µs

VCS = VCS(LIM) + 100mV, VREF > VCS(LIM)

Oscillator Input and Frequency Divider (CLK)

FSW(max)

KSW

φ2

φ3

TOFF

TON

VCLK,HI

VCLK,LO

Maximum switching frequency

Frequency divider ratio

DRAIN1-DRAIN2 phase delay

DRAIN1-DRAIN3 phase delay

CLK high time

CLK low time

CLK Input high

CLK Input low

* 500

--

--

--

- 50

- 50

* 2.0

*-

-

-

6

-

120 -

240 -

-

-

-

-

-

-

- 0.8

kHz fCLK = 3.0MHz

- Guaranteed by design

deg Guaranteed by design

deg Guaranteed by design

ns ---

ns ---

V ---

V ---

PWM Dimming (PWMD1, PWMD2, PWMD3)

VPWMD,HI

VPWMD,LO

RPWMD

PWMD Input high

PWMD Input low

PWMD Pull down resistance

* 2.0

*-

- 100

-

-

- 0.8

200 300

V ---

V ---

kΩ PWMD = 5.0V

Over Temperature Protection

TOT

THYST

Over temperature trip limit

Temperature hysteresis

- 125 140 -

--

60 -

°C Guaranteed by design

°C Guaranteed by design

* Denotes the specifications which apply over the full operating ambient temperature range of -40°C < TA < +85°C.

3

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