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6-Channel LED Driver with Ultra Low Dimming Capability

封装信息

Lead Count (#) 20
Pkg. Code LMT
Pitch (mm) 0.5
Pkg. Type QFN
Pkg. Dimensions (mm) 3.99 x 3.00 x 0.90

环境和出口类别

Moisture Sensitivity Level (MSL) 3
Pb (Lead) Free Yes
ECCN (US) EAR99
RoHS (ISL97672AIRZ) 下载
HTS (US)

产品属性

Lead Count (#) 20
Carrier Type Tube
Moisture Sensitivity Level (MSL) 3
Pb (Lead) Free Yes
Pb Free Category Pb-Free 100% Matte Tin Plate w/Anneal-e3
Temp. Range -40 to +85°C
Backlight for LCD Size (inches) 17 - 17
Brightness Control PWM
Channels (#) 6
Fault Switch Yes
Frequency Range (MHz) .6 - 1.2
IQ (Max) (μA) 5
IS (mA) 5
ISW (Typical) (mA) 2000
Input Voltage (Max) (V) 26.5
Input Voltage (Min) (V) 4.5
Input Voltage Range (V) 4.5 - 26.5
Integrated Diode No
LEDs (#) 78
Length (mm) 4
MOQ 1500
Output Current Max/Channel (mA) 50
Output Voltage (Max) (V) 45
Over Voltage Protection Yes
Parametric Category Backlight LED Drivers
Peak Efficiency (%) 92.9
Pitch (mm) 0.5
Pkg. Dimensions (mm) 4.0 x 3.0 x 0.90
Pkg. Type QFN
Qualification Level Standard
Thickness (mm) 0.9
Topology [Rail 1] Inductor Boost
Total Current for DC/DC Lighting (mA) 300
Width (mm) 3

描述

The ISL97672A is an integrated 6-channel power LED driver for LCD backlight applications. The ISL97672A is capable of driving LEDs with input from 4. 5V to 26. 5V and maximum output up to 45V. The ISL97672A employs an adaptive boost switching architecture that allows Direct PWM dimming with dimming duty cycle as low as 0. 007% at 200Hz or 0. 8% at 20kHz. PWM Dimming frequency can be as high as 30kHz. The ISL97672A employs the dynamic headroom control that monitors the highest LED forward voltage string for output regulation to minimize headroom voltage and power loss in a typical multi-string operation. Typical current matching between channels is ±0. 7%. The ISL97672A incorporates extensive protection functions that flag whenever a fault occurs. The protections include string-open and short-circuit detections, OVP, OTP, and an optional output short-circuit protection with external fault disconnect switch. The ISL97672A is offered in a compact 20 Ld QFN 3x4 package and can operate in ambient temperatures of -40°C to +85°C.