ISL97672AIRZ Ver la hoja de datos (PDF) - Intersil

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componentes Descripción

Fabricante

ISL97672AIRZ

6-Channel LED Driver with Ultra Low Dimming Capability

Intersil 

ISL97672A

Pin Descriptions (I = Input, O = Output, S = Supply)

PIN NAME

FAULT

VIN

EN

VDC

PWM

/FLAG

NC

FSW

AGND

CH0, CH1

CH2, CH3

CH4, CH5

OVP

RSET

COMP

PGND

LX

PIN #

1

2

3

4

5

6

7

8

9

10, 11,

12, 13,

14, 15

16

17

18

19

20

TYPE

DESCRIPTION

O A pull-down current output for external P-channel fault disconnect switch.

S Input supply voltage for IC. Connect a 0.1µF decoupling capacitor close to this pin.

I IC enable pin. Pull high to enable the IC. If EN is low for longer than 30.5ms, IC will be disabled.

S Internal 5V regulator. Connect a 1µF decoupling capacitor on VDC.

I PWM input pin for direct PWM dimming control.

O /FLAG is latched low under any fault condition and resets after input power is recycled or part is re-enabled. This

pin is an open drain that needs pull-up.

I No Connect.

I Boost switching frequency set pin. Connect a resistor between this pin and ground to set up desired boost switching

frequency. See “Switching Frequency” on page 9 for resistance calculation.

S Analog Ground for precision circuits.

I Current source and channel monitoring input for channel 0, 1, 2 3, 4, 5.

I Overvoltage protection input. See “OVP and VOUT” section on page 10.

I LED DC current set pin. Connect a resistor between this pin and ground to set up maximum LED DC current. See

“Maximum DC Current Setting” on page 9 for resistance calculation.

O Boost compensation pin. Connect an RC compensation network between this pin and GND to optimize boost

stability and transient response.

S Power ground.

O Boost converter switching node.

3

FN7710.3

November 22, 2013

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