IXYS MXHV9910 Off-Line High Brightness LED Driver Features: General Description * 8V to 450V Input Voltage Range * >90% Efficiency * Drives from 1 to Hundreds of LEDs in Series/Parallel Combinations * Regulated LED Drive Current * Linear or PWM Brightness Control * Resistor Programmable Oscillator Frequency * SOIC-8 EP RoHS Compliant Package The MXHV9910 is a high-efficiency off-line LED driver. Manufactured using a dialectically isolated process the MXHV9910 can operate from 8V to 450V. This highly versatile input operating voltage enables a broad range of High Brightness (HB) LED applications. The MXHV9910 drives an external MOSFET at a fixed oscillator frequency set by an external resistor. Peak constant current to an LED string is maintained by modulating the MOSFET GATE signal on and off through the external current sense resistor connected to the CS input. Dimming of and LED string is controlled by adjusting the duty cycle of the PWM input, or applying a control voltage from 0 to 250mV to the LD input. Applications: * Flat Panel Display RGB Backlighting * Signage and Decorative LED Lighting * DC/DC or AC/DC LED Driver Applications Ordering Information Part No. Description MXHV9910BE SOIC-8 EP Tube MXHV9910BETR SOIC-8 EP Tape & Reel Qty 100 2000 Functional Block Diagram and Typical Application 8 - 450 V VDD VDD MXHV9910 Voltage Regulator VIN Voltage Reference ROSC OSC PWM Control LD GND GATE CS PWM_D MXHV9910 Drawing No. HV991009 1 5/31/07 www.claremicronix.com IXYS MXHV9910 Absolute Maximum Ratings Parameter VIN to GND CS PD, PWM_D to GND GATE to GND VDDMAX Thermal Resistance, Junction to Ambient Operating Ambient Storage Temperature Symbol Maximum -0.5 to +460 -0.3 to VDD+0.3 -0.3 to VDD +0.3 -0.3 to VDD+0.3 15 o JA TA TSTG Units V V V V V C/W -40 to +85 -55 to +150 o C C o Absolute Maximum Ratings are stress ratings. Stresses in excess of these ratings can cause permanent damage to the device. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this data sheet is not implied. Exposure of the device to the absolute maximum ratings for an extended period may degrade the device and affect its reliability. Pin Description Pin No. Pin Name 1 VIN Description Input Voltage 8V to 450V DC 2 CS LED Current Sense input. Internal current sense threshold is set at 250mV. The external sense resistor sets the maximum LED current. 3 GND Device Ground 4 GATE External MOSFET Gate Driver Output 5 PWM D Low frequency PWM Dimming Control input with internal pull-down resistor. 6 VDD 7.8V regulated supply voltage output. Requires a storage capacitor to ground. 7 LD Linear Dimming. Sets the current limit lower than the internal 250mV threshold at the current sense comparator. 8 ROSC Resistor to ground sets the oscillator / primary PWM frequency. MXHV9910 Drawing No. HV991009 2 5/31/07 www.claremicronix.com IXYS MXHV9910 Electrical Characteristics TA=25 oC unless otherwise specified. Parameter Input DC Voltage Range Shut-Down mode supply current Internal DC Voltage Regulator Maximum voltage to VDD pin VDD current available for external circuitry PWM D input low voltage PWM D input high voltage PWM D pull-down resistance Current sense threshold voltage Symbol VINDC IINsd VDD VDDmax IDD(ext) Condition DC input voltage PWM_D to GND VIN = 15-450V VIN = 15-450V, IDD(ext) = 0 Gate output open. External voltage applied to the VDD pin VIN = Limited by package power dissipation. VIN = 8-450V VIN = 8-450V VGATE(hi) IOUT = 10mA GATE low output voltage Oscillator frequency Maximum Oscillator PWM Duty Cycle Linear Dimming Voltage Range Current Sense Blanking Interval Delay from CS trip to GATE lo GATE output rise time GATE output fall time VGATE(lo) fOSC IOUT = -10mA ROSC = 400k DMAXhf VLD Typ Max 450 Units V 1 mA 7.8 V 12 1.0 mA 0.5 2.4 REN VCS(hi) GATE high output voltage MXHV9910 Drawing No. HV991009 Min 8 135 250 VDD -0.3 0.3 64 V V kHz 85 VIN = 15V V V k mV % 0 250 mV TBLANK 400 nS tDELAY tRISE tFALL 300 30 30 nS nS nS CGATE = 500pF CGATE = 500pF 3 5/31/07 www.claremicronix.com IXYS MXHV9910 MXHV9910 Drawing No. HV991009 4 5/31/07 www.claremicronix.com IXYS World Wide Sales Offices IXYS Corporation 3540 Bassett Street Santa Clara, CA 925054 Tel: 408-982-0700 Fax: 408-496-0670 e-mail:sales@ixys.net United Kingdom IXYS Semiconductor Limited Langley Park Way Langley Park Chippenham Wiltshire SN 15 1GE - England Tel: 44 1249 444524 Fax: 44 1249 659448 sales@ixys.co.uk Micronix An IXYS Company 145 Columbia Aliso Viejo, CA 92656-1490 Tel: 1-949-831-4622 Fax: 1-949-831-4628 Sales Offices ASIA / PACIFIC Asian Headquarters IXYS Room 1016, Chia-Hsin, Bldg II, 10F, No. 96, Sec. 2 Chung Shan North Road Taipei, Taiwan R.O.C. Tel: 886-2-2523-6368 Fax: 886-2-2523-6368 bradley.green@ixys.co.uk Jhong@clare.com SALES OFFICES AMERICAS Eastern Region [Eastern North America, Mexico, South America] IXYS Corporation Beverly, MA Tel: 508-528-6883 Fax: 508-528-4562 wgh@ixys.net Check the IXYS Website for the local sales office nearest you. (www.ixys.com) Central Region [Central North America] IXYS Corporation Greensburg, PA Tel: 724-836-8530 Fax: 724-836-8540 neil.lejeune@westcode.com Western Region [Western North America] IXYS Corporation Solana Beach, CA Tel: 858-792-1101 slodor@ix.netcom.com http://www.claremicronix.com SALES OFFICES EUROPE European Headquarters IXYS Semiconductor GMBH Edisonstrasse 15 D- 68623 Lampertheim Germany Tel: 49-6206-503203 Fax: 49-6206-503286 marcom@ixys.de MXHV9910 Drawing No. HV991009 IXYS cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in this IXYS product. No circuit patent licenses nor indemnity are expressed or implied. IXYS reserves the right to change the specification and circuitry, without notice at any time. The products described in this document are not intended for use in medical implantation or other direct life support applications where malfunction may result in direct physical harm, injury or death to a person. Specification: MXHV9910 (c)Copyright 2006-2007, IXYS Corporation All rights reserved. Printed in USA. 5 5/31/07 www.claremicronix.com