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MC34713EP 데이터시트(PDF) 3 Page - Freescale Semiconductor, Inc |
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MC34713EP 데이터시트(HTML) 3 Page - Freescale Semiconductor, Inc |
3 / 21 page Analog Integrated Circuit Device Data Freescale Semiconductor 3 34713 PIN CONNECTIONS PIN CONNECTIONS Figure 3. 34713 Pin Connections Table 1. 34713 Pin Definitions A functional description of each pin can be found in the Functional Pin Description section beginning on page 9. Pin Number Pin Name Pin Function Formal Name Definition 1 GND Ground Signal Ground Analog signal ground of IC 2 FREQ Passive Frequency Adjustment Buck converter switching frequency adjustment pin 3 ILIM Input Soft Start Soft Start adjustment 4 PG Output Power Good Active-low (open drain) power-good status reporting pin 5, 8 NC None No Connect No internal connections to these pins. Recommend attaching a 0.1µF capacitor from pin 8 to GND. 6 SD Input Shutdown Shutdown mode input control pin 7 VREFIN Input Voltage-Tracking- Reference Input Voltage-Tracking-Reference voltage input 9 COMP Passive Compensation Buck converter external compensation network pin 10 INV Input Error Amplifier Inverting Input Buck converter error amplifier inverting input pin 11 VOUT Output Output Voltage Discharge FET Discharge FET drain connection (connect to buck converter output capacitors) 12,13,14 PGND Ground Power Ground Ground return for buck converter and discharge FET 15,16,17 SW Power Switching Node Buck converter power switching node 18,19,20 PVIN Supply Power-Circuit Supply Input Buck converter main supply voltage input 21 BOOT Passive Bootstrap Bootstrap switching node (connect to bootstrap capacitor) 22,23 VIN Supply Logic-Circuit Supply Input Logic circuits supply voltage input 24 VDDI Passive Internal Voltage Regulator Internal Vdd Regulator (connect filter capacitor to this pin) GND FREQ ILIM PG NC SD SW PGND PGND SW SW PVIN Transparent Top View 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 |
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