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MC34701EK bảng dữ liệu(PDF) 3 Page - Freescale Semiconductor, Inc |
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MC34701EK bảng dữ liệu(HTML) 3 Page - Freescale Semiconductor, Inc |
3 / 38 page Analog Integrated Circuit Device Data Freescale Semiconductor 3 34701 TERMINAL CONNECTIONS TERMINAL CONNECTIONS Figure 3. Terminal Connections Table 1. Terminal Function Description A functional description of each terminal can be found in the FUNCTIONAL TERMINAL DESCRIPTION section beginning on page 15. Terminal Terminal Name Formal Name Definition 1 FREQ Oscillator Frequency This switcher frequency selection terminal can be adjusted by connecting external resistor RF to the FREQ terminal. The default switching frequency (FREQ terminal left open or tied to VDDI) is set to 300 kHz. 2 INV Inverting Input Buck Controller Error Amplifier inverting input. 3 VOUT Output Voltage Output voltage of the buck converter. Input terminal of the switching regulator power sequence control circuit. 4, 5 VIN2 Input Voltage 2 Buck regulator power input. Drain of the high-side power MOSFET. 6, 7 SW Switch Buck regulator switching node. This terminal is connected to the inductor. 8, 9 24, 25 GND Ground Analog ground of the IC, thermal heatsinking. 10, 11 PGND Power Ground Buck regulator power ground. 12 VBD Boost Drain Drain of the internal boost regulator power MOSFET. 13 VBST Boost Voltage Internal boost regulator output voltage. The internal boost regulator provides a 20 mA output current to supply the drive circuits for the integrated power MOSFETs and the external N-channel power MOSFET of the linear regulator. The voltage at the VBST terminal is 7.75V nominal. 14 BOOT Bootstrap Bootstrap capacitor input. 15 SDA Serial Data I2C bus terminal. Serial data. 16 SCL Serial Clock I2C bus terminal. Serial clock. 17 LCMP Linear Compensation Linear regulator compensation terminal. 18 LFB Linear Feedback Linear regulator feedback terminal. 19 LDO Linear Regulator Input terminal of the linear regulator power sequence control circuit. CLKSYN 1 EN2 EN1 ADDR GND GND V DD1 V IN1 LDRV CS LFB LCMP LDO RT CLKSEL RST FREQ V IN2 SW SW GND GND PGND PGND VBD VBST SDA SCL BOOT V IN2 INV V OUT 8 9 10 11 12 13 14 15 16 3 4 5 6 7 2 32 25 24 23 22 21 20 19 18 17 30 29 28 27 26 31 |
Số phần tương tự - MC34701EK |
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Mô tả tương tự - MC34701EK |
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