Rev 1.1 DIO5662 37V Step-Up LED Driver with PWM to Constant Current Dimming Mode Features Descriptions Drive up to 10 serial LEDs DIO5662 is a serial white LED driver, featuring an architecture of 86% high-efficiency current mode PWM to Constant Current dimming mode boost converter, driving up to 10 serial LEDs or a Integrated 40V high current switch (1.3A limit) 3x13(3LEDs in rows) LED matrix. And it adopts PWM to Constant Current dimming control mode, Wide V Input Range: 2.7V~5.5V IN with wide frequency range from 200Hz to 200kHz Dimming scheme up to 100:1 range (The dimming frequency above 10kHz is Up to 86% PWM converter Efficiency recommended). The serial configuration assures Low 300mV feedback voltage the very most brightness consistency of the LED open-circuit (OVP) protection: 37V whole LED array. High switching frequency: 1.1MHz For Compact Solution Size DIO5662 works on 1.1MHz switching frequency, Integrated Soft start which can maximize current output of 1.3A limit < 1A shutdown current and achieve high current conversion efficiency Compact SOT23-6, TSOT23-6, DFN2*2-6 and result in external compact component size. Package Additionally, the total external component Green compliant number is minimized due to the integrated -40 to 85 C Temperature range low-side power MOSFET. Applications LED backlighting DIO5662 integrates multiple protection features, Mobile Phones such as LED open-circuit protection, thermal shutdown protection and cycle-by-cycle input Handheld Devices current limit protection. And the built-in soft start Digital Photo Frames circuit limits inrush current when the circuit Automotive Navigation starts. Ordering Information Order Part Number Top Marking T Package A DIO5662ST6 62YW Green -40 to 85C SOT23-6 Tape & Reel, 3000 DIO5662TST6 62YW Green -40 to 85C TSOT23-6 Tape & Reel, 3000 DIO5662CD6 D62 Green -40 to 85C DFN2*2-6 E Tape & Reel, 3000 www.dioo.com 2018 DIOO MICROCIRCUITS CO., LTD DIO5662 Rev. 1.1 37V Step-Up LED Driver with PWM to Constant Current Dimming Mode DIO5662 Pin Assignment TSOT23-6/SOT23-6 DFN2*2-6 LX 1 6 V IN 1 FB 8 V IN NC 2 GND 5 EN 2 5 NC GND 3 4 GND LX FB 3 4 EN Figure 1 Top View Pin Descriptions Name Description LX Converter switching node GND Converter/IC ground FB Output feedback pin regulated at 0.3V EN IC enable and PWM dimming control pin NC No connected V IC supply voltage IN www.dioo.com 2018 DIOO MICROCIRCUITS CO., LTD DIO5662 Rev. 1.1