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ISL6260CCRZ Datasheet(PDF) 2 Page - Intersil Corporation |
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ISL6260CCRZ Datasheet(HTML) 2 Page - Intersil Corporation |
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2 / 28 page  2 FN9259.3 June 21, 2010 Pinout ISL6260C (40 LD QFN) TOP VIEW Functional Pin Description PSI# Low load current indicator input. When asserted low, indicates a reduced load-current condition. For ISL6260C, when PSI# is asserted low, PWM2 will be disabled. PMON An analog output. PMON sends out an analog signal proportional to the product of VCCSENSE voltage and the droop voltage. RBIAS 147k Resistor to VSS sets internal current reference. VR_TT# Thermal overload output indicator. NTC Thermistor input to VR_TT# circuit. SOFT A capacitor from this pin to Vss sets the maximum slew rate of the output voltage. It affects both soft start and VID transitioning slew rate. 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. (7k Ω gives approximately 300kHz). VW pin sources current. COMP This pin is the output of the error amplifier. FB This pin is the inverting input of error amplifier. VDIFF This pin is the output of the differential amplifier. VSEN Remote core voltage sense input. Connect to microprocessor die. RTN Remote voltage sensing return. Connect to ground at microprocessor die. DROOP Output of droop amplifier. Output = VO + DROOP. DFB Inverting input to droop amplifier. VO An input to the IC that reports the local output voltage. VSUM This pin is connected to the current summation junction. VIN Battery supply voltage, used for feed forward. VSS Signal ground; Connect to local controller ground. VDD 5V bias power. ISEN3 Individual current sensing for channel 3. ISEN2 Individual current sensing for channel 2. ISEN1 Individual current sensing for channel 1. FCCM Forced Continuous Conduction Mode (FCCM) enable pin to MOSFET drivers. It will disable diode emulation. 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 GND PAD (BOTTOM) VID2 VR_TT# NTC VID1 VID0 PWM1 PWM3 FCCM ISEN1 ISEN2 OCSET FB COMP VW SOFT PMON RBIAS PSI# PWM2 ISEN3 ISL6260C |
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