DIO5661ST6

Rev 1.0 DIO5661 37V Step-Up LED Driver with PWM to Constant Current Dimming Mode Features Descriptions  Drive up to 10 serial LEDs DIO5661 is a serial white LED driver, featuring an  PWM to Constant Current dimming mode architecture of 86% high-efficiency current mode  Integrated 40V high current switch boost converter, driving up to 10 serial LEDs or a (1.3A limit) 3x13(3LEDs in rows) LED matrix. And it adopts  Wide VIN Input Range: 2.7V~5.5V PWM to Constant Current dimming control mode,  Dimming scheme up to 100:1 range with wide frequency range from 200Hz to 200kHz  Up to 86% PWM converter Efficiency (The  Low 200mV feedback voltage recommended). The serial configuration assures  LED open-circuit (OVP) protection: 37V the very most brightness consistency of the  High switching frequency: 1.1MHz whole LED array.  For Compact Solution Size  Integrated Soft start DIO5661 works on 1.1MHz switching frequency,  < 1µA shutdown current which can maximize current output of 1.3A limit  Compact SOT23-6, TSOT23-6, DFN-6 Package and achieve high current conversion efficiency  Green compliant and result in external compact component size.  -40 to +85 ˚C Temperature range Additionally, dimming frequency the total above external 10kHz is component number is minimized due to the integrated Applications low-side power MOSFET.  LED backlighting  Mobile Phones DIO5661 integrates multiple protection features,  Handheld Devices such as LED open-circuit protection, thermal  Digital Photo Frames shutdown protection and cycle-by-cycle input  Automotive Navigation current limit protection. And the built-in soft start circuit limits inrush current when the circuit starts. Ordering Information Order Part Number Top Marking TA Package DIO5661ST6 61YW Green -40 to +85°C SOT23-6 Tape & Reel, 3000 DIO5661TST6 61YW Green -40 to +85°C TSOT23-6 Tape & Reel, 3000 DIO5661CD6 D61 Green -40 to +85°C DFN2*2-6 Tape & Reel, 3000 www.dioo.com © 2016 DIOO MICROCIRCUITS CO., LTD DIO5661• Rev. 1.0 DIO5661 TSOT23-6/SOT23-6 DFN2*2-6 LX 1 6 VIN GND 2 5 NC FB 3 4 EN FB 1 NC 2 GND 3 GND 8 VIN 5 EN 4 LX Figure 1 Top View Pin Descriptions Name LX GND www.dioo.com Description Converter switching node Converter/IC ground FB Output feedback pin regulated at 0.2V EN IC enable and PWM dimming control pin NC No connected VIN IC supply voltage © 2016 DIOO MICROCIRCUITS CO., LTD DIO5661• Rev.1.0 37V Step-Up LED Driver with PWM to Constant Current Dimming Mode Pin Assignment DIO5661 Stresses beyond those listed under “Absolute Maximum Rating” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other condition beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maxim rating conditions for extended periods may affect device reliability. Parameter Rating Unit Supply Voltage / VIN -0.3 to 6.0 V High Voltage Nodes / LX -0.3 to 40 V -0.3 to VIN + 0.3 V Operating Temperature Range / TJ -40 to 150 °C Storage Temperature Range / TS -65 to 150 °C Lead Temperature Range / TLEAD 300 °C Other pins / FB, EN SOT23-6/TSOT23-6 190 DFN2*2-6 140 Thermal Resistance / θJA °C/W Maximum Power Dissipation at TA