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MCP9510C Datasheet(PDF) 9 Page - Microchip Technology |
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MCP9510C Datasheet(HTML) 9 Page - Microchip Technology |
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9 / 28 page  © 2008 Microchip Technology Inc. DS22114A-page 9 MCP9509/10 3.0 PIN DESCRIPTIONS TABLE 3-1: PIN FUNCTION TABLE 3.1 External Resistor Input (SET) This pin is used to connect a resistor between the SET and GND pins to select the temperature trip point (TSET). The resistor value can be determined either from Equation 4-2 or the lookup table shown in Table 4-2. 3.2 Ground (GND) The GND pin is the system ground pin. 3.3 Hysteresis Input (HYS) This is an input pin which can be connected to VDD or GND to select output hysteresis. Either 2°C (HYS = GND) or 10°C (HYS = VDD) of hysteresis can be selected. 3.4 Power Pin (VDD) The operating voltage range, as specified in the DC electrical specification table, is applied on this pin. 3.5 Open-Drain Output (OUT) (MCP9509) This output is triggered when temperature exceeds the programmed trip temperature. This pin requires a pull-up resistor. 3.6 Selectable Output (OUT, OUT) (MCP9510) The output pin can be configured as either a Push-Pull Active-High, Push-Pull Active-Low, or an Open-drain Output with an internal pull-up resistor. The three output options of the MCP9510 are selected by the OUTSET pin. 3.7 Output Control (OUTSET) (MCP9510) The OUTSET pin is used to select the desired configuration of the OUT or OUT pin. TABLE 3-1: OUTSET SELECTABLE OUTPUTS MCP9509 MCP9510 Symbol Description SOT-23-5 SOT-23-6 1 1 SET External Trip Temperature Resistor (RSET) input 2 2 GND Ground 3— OUT Open-drain output —3 OUT, OUT Selectable Output pin, function set by OUTSET pin 4 4 HYS Hysteresis Input HYS = GND, hysteresis is 2°C HYS = VDD, hysteresis is 10°C 56 VDD Power pin — 5 OUTSET Output Control OUTSET = GND, Active-Low, Push-Pull OUTSET = VDD, Active-High, Push-Pull OUTSET = Unconnected, Active-Low, Open-Drain with an internal pull-up OUTSET Pin OUT / OUT Pin GND Push-Pull, Active-Low VDD Push-Pull, Active-High unconnected (i.e. open) Open-Drain output with an internal pull-up resistor of 100 k Ω (typical) |
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