MXHV9910B IXYS

MXHV9910 Off-Line, High Brightness LED Driver INTEGRATED CIRCUITS DIVISION Features Description 8V to 450V Input Voltage Range The MXHV9910 is a low-cost, high-brightness (HB) DC DC LED driver manufactured using IXYS IC Divisions >90% Efficiency high-voltage BCDMOS on SOI process. This driver Drives Multiple LEDs in Series/Parallel has internal circuitry that allows it to operate from a Combinations universal AC line or from 8V to 450V . This highly Regulated LED Drive Current DC DC Linear or PWM Brightness Control versatile input operating voltage enables this IC to be Resistor-Programmable Oscillator Frequency used in a broad range of HB LED applications. RoHS Compliant The driver features a fixed-frequency, peak-current control method, which provides an ideal solution for Applications driving multiple LEDs in series and in parallel. In Flat-Panel Display RGB Backlighting addition, LED dimming can be implemented by Signage and Decorative LED Lighting applying a small DC voltage to the LD pin, or by DC/DC or AC/DC LED Driver Applications applying a low-frequency digital PWM signal to the PWMD pin. Pb e3 The MXHV9910 is available in a standard 8-lead SOIC package and a thermally enhanced 8-lead SOIC package with an Exposed Thermal Pad (EP) Ordering Information Part Description MXHV9910B SOIC-8 (100/Tube) MXHV9910BTR SOIC-8 Tape & Reel (2000/Reel) SOIC-8 EP (100/Tube) MXHV9910BE With Exposed Thermal Pad SOIC-8 EP Tape & Reel (2000/Reel) MXHV9910BETR With Exposed Thermal Pad MXHV9910 Block Diagram 6 V DD 1 Voltage V IN Regulator Voltage Reference 250mV 8 OSC R T - PWM 4 Control + GATE 7 - LD + 5 PWMD 3 2 GND CS DS-MXHV9910-R03 www.ixysic.com 1MXHV9910 INTEGRATED CIRCUITS DIVISION 1 Specifications . 3 1.1 Package Pinout 3 1.2 Pin Description . 3 1.3 Absolute Maximum Ratings . 3 1.4 Recommended Operating Conditions . 4 1.5 Electrical Characteristics . 4 1.6 Thermal Characteristics 4 2 Functional Description 5 2.1 Overview . 5 2.2 LED Driver Theory of Operation . 5 2.2.1 Input Voltage Regulator . 6 2.2.2 Current Sense Resistor 6 2.2.3 Current Sense Blanking . 7 2.2.4 Enable/Disable 7 2.2.5 Oscillator . 7 2.2.6 Inductor Design 7 2.2.7 Gate Output Drive 8 2.2.8 Linear Dimming 8 2.2.9 PWM Dimming 8 2.2.10 Combination Linear and PWM Dimming . 9 3 Manufacturing Information 10 3.1 Moisture Sensitivity 10 3.2 ESD Sensitivity . 10 3.3 Reflow Profile . 10 3.4 Board Wash 10 3.5 Mechanical Dimensions . 11 3.5.1 MXHV9910B: SOIC-8 11 3.5.2 MXHV9910BE: SOIC-8 With Exposed Thermal Pad 11 3.6 Packaging Information 12 3.6.1 Tape & Reel Information for both 8-Pin Packages 12 2 www.ixysic.com R03