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RT8175AGQW Datasheet(PDF) 2 Page - Richtek Technology Corporation |
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RT8175AGQW Datasheet(HTML) 2 Page - Richtek Technology Corporation |
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2 / 47 page  RT8175A 2 DS8175A-02 September 2015 www.richtek.com © Copyright 2015 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Functional Pin Description Pin Configurations WQFN-32L 4x4 (TOP VIEW) Pin No. Pin Name Pin Function 1 VREF Fixed 0.6V Output Reference Voltage. This voltage is only used to offset the output voltage of the IMON pin. Between this pin and GND must be placed a exact 0.47 F decoupling capacitor. 2 COMP CORE VR Compensation Node. This pin is the output node of the error amplifier. 3 FB CORE VR Feedback Voltage Input. This pin is the negative input node of the error amplifier. 4 VSEN CORE VR Voltage Sense Input. This pin is connected to the terminal of CORE VR output voltage. 5 RGND Return Ground for CORE VR. This pin is the negative node of the differential remote voltage sensing. 6 VCC Supply Voltage Input. Connect this pin to GND via a ceramic capacitor larger than 2.2 F. The decoupling capacitor should be placed as close to the controller as possible. If the ripple of voltage source is large, RC low pass filter is recommended. (R = 20 , C = 2.2F) 7 SET1 1st Platform Setting. Platform can use this to set DVID compensation time, RSET, DVID compensation width and OCS. 8 SET2 2nd Platform Setting. Platform can use this to set ICCMAX, QRTH and QRWIDTH. 9 SET3 3rd Platform Setting. Platform can use this to set zero load-line, anti-overshoot, ADDR, switching frequency range, shrink TON at PS2 and PS3 and ZCD threshold voltage. 10 IBIAS Internal Bias Current Setting. Connecting this pin to GND by a 100k resistor can set the internal current. Do not connect this pin to GND by a bypass capacitor. 11 TSEN Thermal Sense Input of CORE VR. Ordering Information Note : Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. VREF VSEN FB COMP DRV_EN PVCC PHASE VCC RGND PGND SET1 DRV_EN SET2 VR_READY 33 24 23 22 21 1 2 3 4 10 11 12 13 31 30 29 28 20 19 5 6 9 32 14 27 18 7 15 26 16 25 17 8 GND LGATE BOOT Package Type QW : WQFN-32L 4x4 (W-Type) RT8175A Lead Plating System G : Green (Halogen Free and Pb Free) |
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