HV9912NG-G 데이터 시트보기 (PDF) - Supertex Inc

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HV9912NG-G

Switch-mode LED Driver IC With High Current Accuracy and Hiccup Mode Protection

Supertex Inc 

HV9912

Electrical Characteristics (cont.)

(The * denotes the specifications which apply over the full operating ambient temperature range of -40OC < TA < +125OC, otherwise the specifications are

at TA = 25OC. VIN = 12V, unless otherwise noted.)

Sym Parameter

Min Typ Max Units Conditions

Reference

VREF

REF pin voltage

- 1.225 1.250 1.285

- 1.225 1.250 1.290

VREFLINE Line regulation of reference voltage -

0

-

20

VREFLOAD

Load regulation of reference

voltage

-0

-

10

PWM Dimming

VPWMD(lo)

VPWMD(hi)

RPWMD

PWMD input low voltage

PWMD input high voltage

PWMD pull-down resistance

GATE

ISOURCE

ISINK

TRISE

TFALL

GATE short circuit current

GATE sinking current

GATE output rise time

GATE output fall time

Over Voltage Protection

VOVP, RISING Over voltage rising trip point

VOVP, HYST Over voltage Hysteresis

Current Sense

TBLANK Leading edge blanking

*-

-

0.8

* 2.0

-

-

- 50 100 150

- 0.2

-

-

- 0.4

-

-

--

50

85

--

25

45

- 4.75 5.00 5.25

--

0.50 -

- 100

-

280

- 100

-

330

TDELAY1 Delay to output of COMP comparator -

-

-

200

TDELAY2 Delay to output of CLIMIT comparator -

-

VOFFSET Comparator offset voltage

Internal Transconductance Opamp

GB Gain bandwidth product

AV

Open loop DC gain

- -10

#-

60

-

200

-

10

1.0

-

-

-

REF bypassed with a 0.1µF

capacitor to GND;

IREF = 0; PWMD = GND;

V

0OC < TA < +85OC

REF bypassed with a 0.1µF

capacitor to GND;

IREF = 0; PWMD = GND;

-40OC < TA < +125OC

REF bypassed with a 0.1µF

mV

capacitor to GND; IREF = 0;

VDD = 7.25 – 12V;

PWMD = GND

REF bypassed with a 0.1µF

mV capacitor to GND;

IREF = 0-500µA; PWMD = GND

V ---

V ---

kΩ VPWMD = 5.0V

A

VGATE = 0V

A

VGATE = VDD

ns CGATE = 1.0nF

ns CGATE = 1.0nF

V OVP rising

V OVP falling

ns

0OC < TA < +85OC

-40OC < TA < +125OC

ns

COMP = VDD ; CLIM = REF;

CSENSE = 0 to 600mV step

ns

COMP = VDD ; CLIM = 300mV;

CSENSE = 0 to 400mV step

mV ---

MHz 75pF capacitance at OP pin

dB Output open

● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com

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