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ISL6261 Datasheet(PDF) 6 Page - Renesas Technology Corp |
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ISL6261 Datasheet(HTML) 6 Page - Renesas Technology Corp |
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6 / 34 page  ISL6261 FN9251 Rev 1.00 Page 6 of 34 Sep 27, 2006 Functional Pin Description FDE Forced diode emulation enable signal. Logic high of FDE with logic low of DPRSTP# forces the ISL6261 to operate in diode emulation mode with an increased VW-COMP voltage window. PGD_IN Digital Input. Suggest connecting to MCH_PWRGD, which indicates that VCC_MCH voltage is within regulation. RBIAS A 147K resistor to VSS sets internal current reference. VR_TT# Thermal overload output indicator with open-drain output. Over-temperature pull-down resistance is 10. NTC Thermistor input to VR_TT# circuit and a 60µA current source is connected internally to this pin. SOFT A capacitor from this pin to GND pin sets the maximum slew rate of the output voltage. The SOFT pin is the non-inverting input of the error amplifier. OCSET Overcurrent set input. A resistor from this pin to VO sets DROOP voltage limit for OC trip. A 10µA current source is connected internally to this pin. VW A resistor from this pin to COMP programs the switching frequency (eg. 6.81K = 300kHz). COMP The output of the error amplifier. FB The inverting input of the error amplifier. VDIFF The output of the differential amplifier. VSEN Remote core voltage sense input. RTN Remote core voltage sense return. DROOP The output of the droop amplifier. DROOP-VO voltage is the droop voltage. DFB The inverting input of the droop amplifier. VO An input to the IC that reports the local output voltage. 1 40 2 3 4 5 6 7 8 9 10 30 29 28 27 26 25 24 23 22 21 39 38 37 36 35 34 33 32 31 11 12 13 14 15 16 17 18 19 20 VID2 VID1 VID0 VCCP LGATE VSSP PHASE UGATE BOOT NC FDE PGD_IN RBIAS VR_TT# NTC SOFT OCSET VW COMP FB GND PAD (BOTTOM) |
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Similar Description - ISL6261 |
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