IW338-10

iW338 PWM Generator 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. 1.0 1 of 5 23-Feb-2019 © 2019 Dialog Semiconductor iW338 PWM Generator 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. 1.0 2 of 5 23-Feb-2019 © 2019 Dialog Semiconductor iW338 PWM Generator 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. 1.0 3 of 5 -65 to +150 o C 150 o C 23-Feb-2019 © 2019 Dialog Semiconductor iW338 PWM Generator 6 Physical Dimensions 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 packing quantity is 2,500. Product Summary www.dialog-semiconductor.com Rev. 1.0 4 of 5 23-Feb-2019 © 2019 Dialog Semiconductor iW338 PWM Generator 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. 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Phone: +31 73 640 8822 Taiwan Dialog Semiconductor Taiwan Phone: +886 281 786 222 Email info_pcbg@diasemi.com Web site: www.dialog-semiconductor.com Product Summary www.dialog-semiconductor.com Rev. 1.0 5 of 5 23-Feb-2019 © 2019 Dialog Semiconductor