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34701 数据表(PDF) 2 Page - Freescale Semiconductor, Inc |
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34701 数据表(HTML) 2 Page - Freescale Semiconductor, Inc |
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2 / 38 page  Analog Integrated Circuit Device Data 2 Freescale Semiconductor 34701 INTERNAL BLOCK DIAGRAM INTERNAL BLOCK DIAGRAM Figure 2. 34701 Simplified Internal Block Diagram VIN1 VBST VBD VIN VDDI Internal Supply Boost Control Bandgap Voltage Reference EN1 EN2 RT ADDR SDA SCL RST Power Sequencing Voltage Margining Watchdog Timer Reset Control POR Timer Buck Control Logic Buck HS and LS Driver Thermal Limit I2C Interface Switcher Oscillator 300 kHz Ramp Gen. UVLO Linear Regulator Control ILim + - + - VBST VREF VREF VREF VREF VBST VBST VBST VDDI VDDI VDDI VDDI VDDI VDDI LDRV CS LDO LFB LCMP BOOT SW VIN2 PGND INV VOUT GND FREQ CLKSYN CLKSEL (4) (2) (2) (2) 8.0 V 0.8 V Reset Power Enable SysCon I2C Control SysCon SoftSt Power Down Current Limit PWM Comp Error Amp VLDO VOUT To Reset Control VOUT Power Seq Power Seq I2C Control Q1 Q2 INV LFB Q3 Q4 To Reset Control Q5 Q6 |
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