Ordering number : ENA1933 Bi-CMOS IC LV5027M LED Driver IC Overview LV5027M is a High Voltage LED drive controller which drives LED current up to 3A with external MOSFET. LV5027M is realized very simple LED circuits with a few external parts. Functions • High Voltage LED Controller • Low noise switching system - 5 stages skip mode Frequency - Soft driving • Built-in Reference Voltage circuit (Internal 0.605V) • Short Protection Circuit Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum Input voltage VIN max -0.3 to 42 CS VCS_abs -0.3 to 7 V V OUT pin VOUT_abs -0.3 to 42 V Allowable power dissipation Pd max 1.0 W Junction temperature Tj 150 °C Operating temperature Topr -30 to +125 °C Storage temperature Tstg -40 to +150 °C Recommended Operating Conditions at Ta = 25°C Parameter Input voltage Symbol VIN Conditions Ratings Unit 8.5 to 42 V Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer' s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 30211 SY 20110215-S00002 No.A1933-1/5 LV5027M Electrical Characteristics at Ta = 25°C, VIN = 12V, unless otherwise specified. Parameter Symbol Ratings Conditions min typ Unit max Reference Voltage block Built-in Reference Voltage VREF VREF VIN regulation VREF_LN 0.585 VIN = 8.5 to 24V 0.605 0.625 V % ±0.5 Under Voltage Lockout Operation Start Input Voltage UVLOON Operation Stop Input Voltage UVLOOFF Hysterisys Voltage UVLOH 8 9 10 V 6.3 7.3 8.3 V 1.7 V Oscillation Frequency FOSC 50 kHz Maximum Duty MAXDuty RT = OPEN 93 % VIO_VR 1 Comparator Input offset Voltage 10 mV (Between CS and VREF) Input current IIOCS IIOREF CS pin max voltage VOM malfunction prevention mask TMSK 160 nA 80 nA 1 V 150 ns time Thermal protection Circuit Thermal shutdown temperature TSD *Design guarantee 165 °C Thermal shutdown hysterisys ΔTSD *Design guarantee 30 °C 1000 mA Drive Circuit OUT sink current IOI 500 OUT source current IOO 120 Minimum On time TMIN 200 300 mA 120 ns VCC current UVLO mode VIN current ICCOFF VIN<UVLOON 80 Normal mode VIN current ICCON VIN>UVLOON, OUT = OPEN 0.6 μA mA VIN Over Voltage Protection Circuit VIN over voltage protection voltage VINOVP 24 27 30 V CS terminal abnormal sensing circuit Abnormal sensing voltage CSOCP 1.9 V *: Design guarantee (value guaranteed by design and not tested before shipment) Package Dimensions unit : mm (typ) 3086B 5 6.4 1 0.15 0.1 (1.5) 1.7max 4.4 6 0.63 5.0 10 0.35 1.0 (0.5) SANYO : MFP10S(225mil) No.A1933-2/5 LV5027M Pin Assignment NC GND NC NC NC LV5027M VIN CS OUT NC GND (TOP VIEW) Pin Function Pin No. Pin name Function 1 NC No connection 2 NC No connection 3 NC No connection 4 CS LED current sensing pin. When this pin voltage exceeds VREF (or REF_IN), external FET is OFF. And if the voltage of the pin exceeds 1.9V, LV5027M turns to latch-off mode. 5 NC No connection 6 GND GND pin 7 OUT Driving the external FET Gate pin. 8 VIN Power supply pin. Operation: VIN > UVLOON Stop: VIN < UVLOOFF Switching Stop: VIN > VINOVP 9 NC No connection 10 GND GND pin No.A1933-3/5 LV5027M Block Diagram VIN Built-in REGULATOR TSD UVLO OVP REFERENCE VOLTAGE 0.605V OSCILATOR S CS + R - Q CONTROL LOGIC OUT Current Limit Comparater Short Protection Circuit GND Sample Application Circuit AC+ LED+ LED- AC- VCC OUT CS GND No.A1933-4/5 LV5027M Skip frequency function LV5027M contains the skip frequency function for reduction of the peak value of conduction noise. This function changes the frequency as follows. Skip Frequency Function VIN UVLO unlocked OUT 45k 55k 52.5k 50k 47.5k 45k Switching frequency is changed as follows. … ×0.9 → ×1.1 → ×1.05 → ×1 → ×0.95 → ×0.9 → ×1.1 … It’s repeated by this loop. CS pin abnormal stop function If the voltage of the pin exceeds 1.9V, LV5027M turns to latch-off mode and switching is stopping. SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of March, 2011. Specifications and information herein are subject to change without notice. PS No.A1933-5/5