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ISL6115ACBZ-T 数据表(PDF) 3 Page - Intersil Corporation |
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ISL6115ACBZ-T 数据表(HTML) 3 Page - Intersil Corporation |
3 / 10 page 3 FN6855.1 April 23, 2010 Pin Descriptions PIN NO. SYMBOL FUNCTION DESCRIPTION 1 ISET Current Set Connect to the low side of the current sense resistor through the current limiting set resistor. This pin functions as the current limit programming pin. 2 ISEN Current Sense Connect to the more positive end of sense resistor to measure the voltage drop across this resistor. 3GATE External FET Gate Drive Pin Connect to the gate of the external N-Channel MOSFET. A capacitor from this node to ground sets the turn-on ramp. At turn-on this capacitor will be charged to VDD +6.5V by an 14µA current source. 4 VSS Chip Return 5 VDD Chip Supply 12V chip supply. This can be either connected directly to the +12V rail supplying the switched load voltage or to a dedicated VSS +12V supply. 6 CTIM Current Limit Timing Capacitor Connect a capacitor from this pin to ground. This capacitor determines the time delay between an overcurrent event and chip output shutdown (current limit time-out). The duration of current limit time-out is equal to 93kΩ x CTIM. 7 PGOOD Power Good Indicator Indicates that the voltage on the ISEN pin is satisfactory. PGOOD is driven by an open drain N-Channel MOSFET and is pulled low when the output voltage (VISEN) is less than the UV level for the particular IC. 8 PWRON Power-ON PWRON is used to control and reset the chip. The chip is enabled when PWRON pin is driven high to a maximum of 5V or is left open. Do not drive this input >5V. After a current limit time-out, the chip is reset by a low level signal applied to this pin. This input has 20µA pull-up capability. ISL6115A |
类似零件编号 - ISL6115ACBZ-T |
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类似说明 - ISL6115ACBZ-T |
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