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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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34701 датащи(PDF) 34 Page - Freescale Semiconductor, Inc |
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34701 датащи(HTML) 34 Page - Freescale Semiconductor, Inc |
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34 / 38 page  Analog Integrated Circuit Device Data 34 Freescale Semiconductor 34701 TYPICAL APPLICATIONS Figure 33. Simplified Block Diagram and Basic Application 100 uF Buck Control Logic + - + - Thermal Limit Current Limit Error Amp. PWM Comp. UVLO VBST VDDI SW FREQ Power Down Reset Control POR Timer SysCon SysCon INV EN2 GND 0.8V R b (2) EN1 SoftSt CLKSYN VIN2 Buck HS & LS Driver VBST Vref Vref Power Enable 8.0V VBST Boost Control VBD 10uF VDDI LDRV Vref LFB CS LDO RT RESET +3.3V Supply Voltage VDDI R S SDA SCL Ct PGND Reset R F 4.7 uH 10uH VIN1 VIN BOOT CLKSEL VOUT VLDO C B LCMP VBST L1 C O C IN Vref VDDI Q2 Q1 (2) (2) (4) ADDR I2C Interface Rt I2C Control I2C Control C LDO 5 x 2.2 uF C BST D B Q LDO L BST 0.1uF VDDI R pd 10k VDDI Internal Supply VDDI Bandgap Voltage Reference Power Sequencing Voltage Margining W-dog Timer VBST Ramp Gen. VOUT To Reset Control Pow. Seq. Switcher Oscillator 300kHz C IN VBST Linear Regulator Control I-lim VOUT 100pF 1.5k 2 x 22 uF 10uF 6.8nF 470pF 39k 300k 27k 300 (Optional) 5.1k 100k 100nF 1.0 uF 0.022 R Pow. Seq. 4.7k 1.5k Q3 Q4 INV LFB + 100 uF Buck Control Logic Buck Control Logic + - + - + - + - Thermal Limit Current Limit Error Amp. PWM Comp. UVLO VBST VDDI SW FREQ Power Down Reset Control POR Timer SysCon SysCon INV EN2 GND 0.8V R b (2) EN1 SoftSt CLKSYN VIN2 Buck HS & LS Driver Buck HS & LS Driver VBST Vref Vref Power Enable 8.0V VBST Boost Control Boost Control VBD 10uF VDDI LDRV Vref LFB CS LDO RT RESET VDDI R S SDA SCL Ct PGND Reset R F 4.7 uH 10uH VIN1 VIN BOOT CLKSEL VOUT VLDO C B LCMP VBST L1 C O C IN Vref VDDI Q2 Q1 (2) (2) (4) ADDR I2C Interface Rt I2C Control I2C Control C LDO 5 x 2.2 uF C BST D B Q LDO L BST 0.1uF VDDI R pd 10k VDDI Internal Supply VDDI Bandgap Voltage Reference Power Sequencing Voltage Margining W-dog Timer VBST Ramp Gen. Ramp Gen. VOUT To Reset Control Pow. Seq. Switcher Oscillator 300kHz C IN VBST Linear Regulator Control I-lim Linear Regulator Control I-lim VOUT 100pF 1.5k 2 x 22 uF 10uF 6.8nF 470pF 39k 300k 27k 300 (Optional) 5.1k 100k 100nF 1.0 uF 0.022 R Pow. Seq. 4.7k 1.5k Q3 Q4 INV LFB + + 7.75V RST RST +3.3V Supply Voltage VOUT=1.8V VLDO=3.3V @1.0A +3.3V or VLDO to MCU Q5 Q6 |
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