Supertex inc. HV9967B Integrated LED Driver with Average-Mode Current Control Features General Description 3% accurate LED current The HV9967B is an average-mode current control LED driver IC operating in a constant off-time mode. Integrated 60V, 0.8 MOSFET Low sensitivity to external component variation The IC features an integrated 60V, 0.8 MOSFET that can be Single resistor LED current setting used as a stand-alone buck converter switch, or connected as a Fixed off-time control source driver for driving an external high-voltage depletion-mode PWM dimming input MOSFET. The HV9967B is powered through its switching output Output short circuit protection with skip mode when the integrated switch is off. Hence, the same external MOSFET can be used as a high-voltage linear regulator for Over-temperature protection powering the IC. Available in compact 8-Lead MSOP and 8-Lead DFN packages The LED current is programmed with one external resistor. The average-mode current control method does not produce a peak- Applications to-average error, and therefore greatly improves current accuracy DC/DC or AC/DC LED drivers and line and load regulation of the LED current without any need RGB backlighting drivers for flat panel displays for loop compensation or direct sensing of the LED current at a high-voltage potential. The auto-zero circuit cancels the effects of General purpose constant current source the input offset voltage and of the propagation delay of the current Signage and decorative LED lighting sense comparator. Chargers Typical Application Circuit 8.0 - 60VDC + C C D1 LED O IN String U1 4 1 PWMD SW L1 HV9967B 2 8 RSENSE VDD PGND AGND RT R SENSE 367 C DD R T Doc. DSFP-HV9967B Supertex inc. B060712 www.supertex.comHV9967B Pin Configurations Ordering Information Part Number Package Options Packing SW 1 8 VDD HV9967BK7-G 8-Lead DFN (3x3mm) 3000/Reel RSENSE 2 7 AGND GND PGND RT HV9967BMG-G 8-Lead MSOP 2500/Reel 3 6 -G indicates package is RoHS compliant (Green) PWMD 4 5 NC 8-Lead DFN (K7) (top view) 1 8 SW VDD 2 7 RSENSE AGND Absolute Maximum Ratings* 3 6 PGND RT Parameter Value 4 5 NC PWMD SW to GND -0.5V to +65V 8-Lead MSOP (MG) VDD to GND -0.3V to 6.0V (top view) Other I/O to GND -0.3V to (V + 0.3V) DD Product Marking R , I 2.0mA T SET Continuous power dissipation (T = +25C) Y = Last Digit of Year Sealed A H67B 8-Lead DFN (K7) 1.6W W = Code for Week Sealed YWLL 8-Lead MSOP (MG) 350mW L = Lot Number = Green Packaging Junction temperature -40C to +150C Package may or may not include the following marks: Si or Storage temperature range -65C to +150C 8-Lead DFN (K7) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional Top Marking operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute 967B maximum rating conditions for extended periods may affect device reliability. LLLL L = Lot Number YY = Year Sealed Typical Thermal Resistance Bottom Marking WW = Week Sealed Package ja = Green Packaging O 8-Lead DFN 37 C/W YYWW O 8-Lead MSOP 216 C/W Package may or may not include the following marks: Si or 8-Lead MSOP (MG) Electrical Characteristics (The * denotes specifications which apply over the full operating ambient temperature range of -40C < T < 125C. Otherwise specifications are at T = A A 25C. V = 10V/10mA, V = 5.0V unless otherwise noted) SW DD Sym Description Min Typ Max Units Conditions Input V Input DC supply voltage range * 8.0 - 60 V DC input voltage SWDC I Shut-down mode supply current - - 0.5 1.0 mA Pin PWMD to GND INSD Notes: Not production tested guaranteed by design or characterization. * Specifications apply over the full operating ambient temperature range of -40C < T < +125C. A Doc. DSFP-HV9967B Supertex inc. B060712 2 www.supertex.com