ISL97672 6-Channel LED Driver

ISL97672

6-Channel LED Driver

	Features Description		iSim Design Simulation
	Technical Documentation		Tools And Support
	Pricing / Samples		Related Devices

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	ISL97672IRZ

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	ISL97672IRZ	Details
	ISL97672IRZ-T	Details
	ISL97672IRZ-TK	Details

Datasheet
	ISL97672
	6-Channel LED Driver

Topologies

Inductor Boost

# of LEDs (max)

# of Channels

Digital Interface

Backlight For LCD Size (inches)

up to 17

Total Current for DC/DC Lighting (mA)

240

I_OUT (max/Channel) (mA)

Peak Efficiency (%)

92.9

V_IN (V)

4.5 to 26.5

V_OUT (max) (V)

Frequency (MHz)

0.6/1.2

I_S (max) (mA)

I_q (max) (μA)

I_sw (typ) (mA)

2000

Integrated Diode

OVP

Fault Switch

Brightness Control

PWM

Product Information

Key Features

6 Channels
4.5V to 26.5V Input
45V Output Max
Up to 40mA LED Current per channel
Direct PWM Dimming without Phase Shift
PWM Dimming Linearity 0.4%~100% <30kHz
Adjustable 200kHz to 1.4MHz Switching Frequency
Dynamic Headroom Control
Protections with Flag Indication
- String Open/Short Circuit, V_OUT Short Circuit, Overvoltage and
  Over-Temperature Protections
- Optional Master Fault Protection
Current Matching ±0.7%
20 Ld 4mmx3mm QFN Package

Description

The ISL97672 is an integrated power LED driver that controls 6 channels of LED current for LCD backlight applications. The ISL97672 is capable of driving up to 78 LEDs from 4.5V to 26V or 48 LEDs from a boost supply of 2.7V to 26V and a separate 5V bias supply on the VIN pin.

The ISL97672 compensates for non-uniformity of the forward voltage drops in the LED strings with its 6 voltage controlled-current source channels. Its headroom control monitors the highest LED forward voltage string for output regulation, to minimize the voltage headroom and power loss in a typical multi-string operation.

The ISL97672 allows direct PWM mode by following the external signal from 0Hz to 30KHz at 0.4% to 100% duty cycle and maintaining a typical ±0.7% current matching between channels.

The ISL97672 features a separate EN pin and extensive protection functions that flag whenever a fault occurs. The protections include string open and short circuit detections, OVP, OTP, thermal shutdown and an optional input overcurrent protection with fault disconnect switch.

Pricing / Packaging / Samples / Ordering

iBuy direct from Intersil	iBuy direct - out of stock	Request samples
Check distributor inventory	Available in RoHS/Pb-Free

	Part No.	Design-In Status	Temp.	Package	MSL	Price US $

	ISL97672IRZ	Active	Ind	20 Ld QFN	1	1.20

	ISL97672IRZ-T	Active	Ind	20 Ld QFN T+R	1	1.20

	ISL97672IRZ-TK	Active	Ind	20 Ld QFN T+R	1	1.20

The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice.
MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020
SMD = Standard Microcircuit Drawing

Technical Documentation

Datasheet(s):
6-Channel LED Driver
Evaluation Board(s):
ISL97671/2/3/4IRZ-EVAL Quick Start Guide ISL97672 Evaluation Kit Software
Technical Homepage:
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Tools And Support
iSim Design Simulation
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Application Block Diagrams

Applications

Notebook Displays LED Backlighting
LCD Monitor LED Backlighting
Automotive Displays LED Backlighting
Automotive or Traffic Lighting

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Parametric Table

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