ISL97682 Ver la hoja de datos (PDF) - Intersil

Número de pieza

componentes Descripción

fabricante

ISL97682

Compact 2-3-4-Ch LED Drivers with Phase Shift Control

Intersil 

ISL97682, ISL97683, ISL97684

Block Diagram

VIN = 4~26.5V

OPTIONAL FUSE

10µH/1.5A

VIN

EN

VDC

REG

INTERNAL

BIAS

ISL97684

O/P SHORT

OUTPUT = 45V, 4 X 50mA*

4.7µF/50V

LX

OVP

OVP

OSC &

RAMP

COMP

FSW

PHASE

FSW SELECT

DETECT

COMP

GM

AMP

Σ♦∏= 0

IMAX ILIMIT

LOGIC

FET

DRIVER

8-BIT

DAC

DYNAMIC

HEADROOM

CONTROL

PE

OPEN CKT, SHORT CKT DETECTS

HIGHEST

VF

STRING

DETECT

RSET

AGND

PWMI

FPWM/

DIRECTPWM

+

-

REFOVP

REFVSC

REF

GEN

VSET

PHASE SELECT

8-BIT

DIGITIZER

PHASE SHIFT

& PWM

CONTROLLER

+

1

-

TEMP

SENSOR

+

4

-

DIRECTPWM

DETECT

PGND

CH1

CH4

*VIN >= 9V AND WITH

GOOD LEDS MATCHING

Ordering Information

FIGURE 2. ISL97684 BLOCK DIAGRAM

PART NUMBER

(Notes 1, 2, 3)

PART MARKING

TEMP RANGE

(°C)

PACKAGE

(Pb-free)

PKG.

DWG. #

ISL97682IRTZ

7682

-40 to +85

16 LD 3x3 TQFN

L16.3x3D

ISL97683IRTZ

7683

-40 to +85

16 LD 3x3 TQFN

L16.3x3D

ISL97684IRTZ

7684

-40 to +85

16 LD 3x3 TQFN

L16.3x3D

ISL97682IRTZ-EVALZ

Evaluation Board

ISL97683IRTZ-EVAL

Evaluation Board

ISL97684IRTZ-EVALZ

Evaluation Board

NOTES:

1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.

2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte

tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil

Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

3. For Moisture Sensitivity Level (MSL), please see device information page for ISL97682, ISL97683, ISL97684. For more information on MSL please

see techbrief TB363.

2

FN7689.0

March 11, 2011

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