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MC33730EK Datasheet(PDF) 5 Page - Freescale Semiconductor, Inc |
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MC33730EK Datasheet(HTML) 5 Page - Freescale Semiconductor, Inc |
5 / 28 page Analog Integrated Circuit Device Data Freescale Semiconductor 5 33730 PIN CONNECTIONS 16 P1(1) Logic Input Programming Pin 1 Programming pin 1 for the VDD3, VDDL, and VKAM reference voltages. 17 P2(1) Logic Input Programming Pin 2 Programming pin 2 for the VDD3, VDDL, VKAM reference voltages. 18 PFD Analog Output Protection FET Drive Reverse battery protection FET gate drive. 19 BOOT Analog Input Bootstrap This pin is connected to the bootstrap capacitor. 20 SR Analog Input Slew-rate Slew-rate Control of the switching regulator. 21,22 SW Power Output Switch Node These pins are the source of the internal power switch (N-channel MOSFET). 23,24 VBAT Power Input Battery Voltage Supply Voltage supply to the IC (external reverse battery protection needed in some applications). 25 KA_VBAT Power Input Keep Alive Supply This pin is the keep alive supply input. 26 CP Analog Output Charge Pump External capacitor reservoir of the internal charge pump. 27 VKAM Power Output Keep Alive Memory Keep-Alive Memory (standby) supply output. 28 VDD3 Analog Input VDD3 Linear Regulator This is a VDD3 regulator output feedback pin. This pin is also the output of the VDD3 standby regulator. 29 VDD3_B Analog Output VDD3 Linear Regulator Base Drive This pin can be used also as an additional standby regulator without the external pass transistor. 30 GND Ground Ground This pin is a ground. 31 VIGN Analog Input Voltage Ignition This pin is the ignition switch control input pin. It contains an internal protection diode. 32 P3(1) Logic Input Programming Pin 3 Programming pin 3 for the VDD3, VDDL, and VKAM reference voltages. Notes 1. Programming pins must never be left floating, they must be tied to ground or protected battery voltage depending on the output voltage selections desired. Table 2. 33730 Pin Definitions(continued) A functional description of each pin can be found in the Functional Pin Description section beginning on page 12. Pin Number Pin Name Pin Function Formal Name Definition |
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