SP2260 60V Buck LED Driver DESCRIPTION SP2260 is the monolithic IC designed for a step-down LED driver capable of driving 1.5A/3A load without an additional transistor. The input voltage range is up to 60V. Its feedback voltage, VFB, is 200mV. The SP2260 operates at a switching frequency of 52kHz. The external shutdown function is controlled by a logic level on the ON/OFF pin and then the circuit comes into the standby mode with ISTBY~50µA (typ.). The ON/OFF pin may be used for the analog dimming. As the voltage on the ON/OFF pin is increased from 0.07V to 0.67V, the voltage on the FB pin falls from 200mV to 0. The self-protection features include a cycle-by-cycle current limit and a thermal protection. SP2260 is available in standard TO-263 and SOP-8 with power pad. package. FEATURES APPLICATIONS DC/DC LED driver applications Backlighting for flat panel displays General purpose constant current source Automotive Chargers PIN CONFIGURATION PSOP-8L TO-263-5L VIN Max = 60V VFB = 200mV Frequency 52kHz ILED Max 1.5A with PSOP-8L ILED Max 3.0A with TO-263-5L On/Off input may be used for the Analog Dimming Thermal protection Cycle-by-cycle current limit PART MARKING PSOP-8L TO-263-5L 2013/06/18 Ver.5 Page 1 SP2260 60V Buck LED Driver TYPICAL APPLCATION CIRCUIT PIN DESCRIPTION Pin (PSOP-8L) 1 2 3 4 5~8 Pin (TO263-5) 1 2 4 5 3 Symbol VIN SW FB DIM GND Description Supply Voltage Input Switch Feedback ON/Off and Linear Dimming Ground ORDERING INFORMATION ※ ※ ※ ※ Part Number SP2260S8RG Package PSOP- 8L Part Marking SP2260 SP2260S8RGB PSOP- 8L SP2260 SP2260T265RG TO-263-5L SP2260 SP2260T265RGB TO-263-5L SP2260 SP2260S8RG : 13” Tape Reel ; Pb – Free SP2260S8RGB : 13” Tape Reel ; Pb – Free; Halogen – Free SP2260T265RG : 13" Tape Reel ; Pb – Free SP2260T265RGB : 13" Tape Reel ; Pb – Free; Halogen – Free BLOCK DIAGRAM 2013/06/18 Ver.5 Page 2 SP2260 60V Buck LED Driver ABSOULTE MAXIMUM RATINGS (TA=25℃ Unless otherwise specified) Parameter DC Supply Voltage ON/OFF and Dimming Voltage Symbol VIN DIM SW Voltage FB Voltage Operating Temperature Maximum Junction Temperature Storage Temperature SW FB TOPR TJ(Max) TS Value 63 -0.3~VIN -0.8 -0.3~VIN -40～125 150 -65～150 Unit V V V V ℃ ℃ ℃ The IC has a protection circuit against static electricity. Do not apply high static electricity or high voltage that exceeds the performance of the protection circuit to the IC. ELECTRICAL CHARACTERISTICS (Tj=25℃, VIN=12V, ILOAD=350mA Unless otherwise specified) Symbol Parameter VIN Operating Voltage Conditions VIN = 12V, ILOAD = 350mA, DIM = 0V VIN = 5.5V~60V, ILOAD = 350mA, VDIM = 0V VFB = 250mV, DIM= 0V VFB Feedback Voltage IFB FOSC Feedback Current Oscillator Frequency VSAT Saturation Current DMAX ILO Max Duty SW Leakage Current VIN=60V, VFB = 1.5V, VSW = 0V CL VTH IIH IIL IQ ISTBY VDIM ISW=1.5A ISW=3.0A DIM Threshold Voltage Input Current On/Off Input Current On/Off Quiescent Current Standby Current Dimming Voltage 2013/06/18 Ver.5 VOn/Off = 2.5V VOn/Off = 0 V VFB = 1.5V VIN=60V, VDIM = 5V VIN = 12V, ILOAD = 0 Typ. 200 180 -150 47 -50 52 1.35 1.35 -0.3 2.5 4.5 -0.07 1.0 -1.0 -1.0 PSOP-8L TO-263-5L PSOP-8L TO-263-5L Current Limit Min. 5.5 190 600 Max. Unit 60 V 210 mV mV 220 150 58 1.5 1.5 100 4.5 6.5 nA KHz V V % mA A A 1.4 2.0 V 0.01 -0.3 5.3 50 670 1.0 1.0 10 200 750 uA uA mA uA mV Page 3 SP2260 60V Buck LED Driver PERFORMANCE CHARACTERISTICS (Circuit for typical application circuit) Fig.1 Feedback Voltage Fig.2 Normalized Feedback Voltage Fig.3 Switch Saturation Voltage (no any components connected to SW-pin. Vfb=0) Fig.4 Oscillator Frequency Fig.5 Dimming Voltage Fig.6 Normalized Dimming Voltage 2013/06/18 Ver.5 Page 4 SP2260 60V Buck LED Driver PSOP- 8L PACKAGE OUTLINE 2013/06/18 Ver.5 Page 5 SP2260 60V Buck LED Driver TO-263 PACKAGE OUTLINE 2013/06/18 Ver.5 Page 6 SP2260 60V Buck LED Driver Information provided is alleged to be exact and consistent. SYNC Power Corporation presumes no responsibility for the penalties of use of such information or for any violation of patents or other rights of third parties which may result from its use. No license is granted by allegation or otherwise under any patent or patent rights of SYNC Power Corporation. Conditions mentioned in this publication are subject to change without notice. This publication surpasses and replaces all information previously supplied. SYNC Power Corporation products are not authorized for use as critical components in life support devices or systems without express written approval of SYNC Power Corporation. ©The SYNC Power logo is a registered trademark of SYNC Power Corporation ©2012 SYNC Power Corporation – Printed in Taiwan – All Rights Reserved SYNC Power Corporation 7F-2, No.3-1, Park Street NanKang District (NKSP), Taipei, Taiwan 115 Phone: 886-2-2655-8178 Fax: 886-2-2655-8468 http://www.syncpower.com 2013/06/18 Ver.5 Page 7