iW338 PWM Generator Company Confidential 1 Description The iW338 is a generic PWM signal generator IC to convert a 0-0.6V analog voltage to an inverted 0%-100% PWM duty cycle. The PWM frequency range is set by an external capacitor and is programmable from 100Hz to 50kHz. The output of the iW338 is a 5V PWM driver capable of driving an external optocoupler for isolated applications or a MOSFET for non-isolated applications. 2 Features ●● 8V to 60V DC input voltage ●● Shutdown pin to minimize standby power ●● 1% PWM duty cycle tolerance ●● SOIC-8 package ●● Programmable PWM frequency range: 100Hz to 50kHz 3 Applications ●● Generic PWM duty cycle generator ●● Signal feedback across isolation barrier 8-60V iW338 PWM Output VCC VIN DRV DIM FLT SD GND CF 0-0.6V Figure 3.1 : iW338 Typical Application Circuit Product Summary www.dialog-semiconductor.com Rev. 0.4 Preliminary 1 of 5 10-February-2017 © 2017 Dialog Semiconductor iW338 PWM Generator Company Confidential 4 Pinout Description iW338 1 VIN SD 8 2 GND CF 7 3 VCC FLT 6 4 DRV DIM 5 Figure 4.1 : 8-Lead SOIC Package Pin Number Pin Name Type Pin Description 1 VIN Analog Input 2 GND Ground Ground. 3 VCC Power Power supply for control logic. PWM driver. The DRV output changes duty cycle linearly and inversely proportional to the input of the DIM pin. 100% duty cycle output on the DRV pin corresponds to 0V on the DIM pin and 0% duty cycle corresponds to >0.6V on the DIM pin. Power supply up to 60V. 4 DRV Output 5 DIM Analog Input Dimming interface connection. 6 FLT Analog Input Dimming signal filter capacitor connection. 7 CF Analog Input Sets the PWM output frequency: 100Hz to 50kHz. 8 SD Analog Input Shuts down the IC if voltage is over 2V. Product Summary www.dialog-semiconductor.com Rev. 0.4 Preliminary 2 of 5 10-February-2017 © 2017 Dialog Semiconductor iW338 PWM Generator Company Confidential 5 Absolute Maximum Ratings Absolute maximum ratings are the parameter values or ranges which can cause permanent damage if exceeded. Parameter Symbol Value Units VIN to GND VCC -0.3 to 65 V DIM to GND -0.3 to 5 V DRV, FLT, CF, SD to GND -0.3 to 5 V ±2000 V ESD rating per JEDEC JESD22-A114 Storage temperature range Maximum junction temperature Product Summary www.dialog-semiconductor.com Rev. 0.4 Preliminary 3 of 5 -65 to +150 o C 150 o C 10-February-2017 © 2017 Dialog Semiconductor iW338 PWM Generator Company Confidential 6 Physical Dimensions 8-Lead Small Outline (SOIC) Package E 8 5 1 4 H e h x 45° A1 COPLANARITY 0.10 (0.004) A2 B MIN MAX MIN MAX A 0.053 0.069 1.35 1.75 A1 0.0040 0.010 0.10 0.25 A2 0.049 0.059 1.25 1.50 B 0.014 0.019 0.35 0.49 C 0.007 0.010 0.19 0.25 D 0.189 0.197 4.80 5.00 E 0.150 0.157 3.80 4.00 e A SEATING PLANE Inches Symbol D L α C Millimeters 0.050 BSC 1.27 BSC H 0.228 0.244 5.80 6.20 h 0.10 0.020 0.25 0.50 L 0.016 0.049 0.4 1.25 α 0° 8° Compliant to JEDEC Standard MS12F Controlling dimensions are in inches; millimeter dimensions are for reference only This product is RoHS compliant and Halide free. Soldering Temperature Resistance: [a] Package is IPC/JEDEC Std 020D moisture sensitivity level 1 [b] Package exceeds JEDEC Std No. 22-A111 for solder immersion resistance; package can withstand 10 s immersion < 260˚C Dimension D does not include mold flash, protrusions or gate burrs. Mold flash, protrusions or gate burrs shall not exceed 0.15 mm per end. Dimension E1 does not include interlead flash or protrusion. Interlead flash or protrusion shall not exceed 0.25 mm per side. The package top may be smaller than the package bottom. Dimensions D and E1 are determined at the outermost extremes of the plastic body exclusive of mold flash, tie bar burrs, gate burrs and interlead flash, but including any mismatch between the top and bottom of the plastic body. Figure 6.1 : Physical Dimensions of 8-Pin SOIC Package 7 Ordering Information Part Number Options iW338-10 Package Description SOIC-8 Tape & Reel1 Note 1: Tape and reel packing quantity is 2,500/reel. Minimum ordering quantity is 2,500. Product Summary www.dialog-semiconductor.com Rev. 0.4 Preliminary 4 of 5 10-February-2017 © 2017 Dialog Semiconductor iW338 PWM Generator Company Confidential Disclaimer Information in this document is believed to be accurate and reliable. However, Dialog Semiconductor does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information. Dialog Semiconductor furthermore takes no responsibility whatsoever for the content in this document if provided by any information source outside of Dialog Semiconductor. Dialog Semiconductor reserves the right to change without notice the information published in this document, including without limitation the specification and the design of the related semiconductor products, software and applications. Applications, software, and semiconductor products described in this document are for illustrative purposes only. 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All other product or service names are the property of their respective owners. © 2017 Dialog Semiconductor. All rights reserved. RoHS Compliance Dialog Semiconductor’s suppliers certify that its products are in compliance with the requirements of Directive 2011/65/EU of the European Parliament on the restriction of the use of certain hazardous substances in electrical and electronic equipment. RoHS certificates from our suppliers are available on request. Contacting Dialog Semiconductor United Kingdom (Headquarters) Dialog Semiconductor (UK) LTD Phone: +44 1793 757700 North America Dialog Semiconductor Inc. Phone: +1 408 845 8500 Singapore Dialog Semiconductor Singapore Phone: +65 64 8499 29 China (Shenzhen) Dialog Semiconductor China Phone: +86 755 2981 3669 Germany Dialog Semiconductor GmbH Phone: +49 7021 805-0 Japan Dialog Semiconductor K. K. 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