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MC34703R2 bảng dữ liệu(PDF) 8 Page - Freescale Semiconductor, Inc |
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MC34703R2 bảng dữ liệu(HTML) 8 Page - Freescale Semiconductor, Inc |
8 / 46 page Analog Integrated Circuit Device Data 8 Freescale Semiconductor 34703 ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS BUCK ERROR AMPLIFIER (INV, COMP) Input Impedance (13) RIN – 14 – M Ω Output Impedance (13) ROUT – 1.4 – k Ω DC Open Loop Gain (13) AVOL – 80 – dB Gain Bandwidth Product (13) GBW – 4.0 – MHz Slew Rate (13) SR – 2.0 – V/ µs Output Voltage Swing – High Level VIN1 > 3.3 V, IOEA = -400 mA (13) VEAOH – 2.0 – V Output Voltage Swing – Low Level IOEA = 400 mA (13) VEAOL – 0.4 – V Slope Compensation Ramp (13) VSCRAMP – 0.6 – V OSCILLATOR (FREQ) Oscillator Low-Level Output Voltage (CLKSYN Pin), CLKSEL Open VOSCOL – 0.1 0.4 V Oscillator High-Level Output Voltage (CLKSYN Pin), CLKSEL Open (14) VOSCOH 2.7 – 3.3 V Oscillator Input Voltage Threshold (CLKSYN Pin), CLKSEL Grounded VOSCIH 1.2 1.6 2.0 V Oscillator Frequency Adjusting Reference Voltage (FREQ) (16) VFREQ 1.15 1.27 1.35 V Oscillator Frequency Adjusting Resistor Range (16) RFREQ 5.0 – 20 k Ω BOOST REGULATOR (VBST, VIN) Boost Regulator Output Voltage IBST = 20mA, VIN1 = VIN2 = 2.8 V to 8.0 V VBST 7.5 8.0 8.5 V Boost Regulator Output Voltage(15) IBST = 20mA, VIN1 = VIN2 > 8.0V VBST(VGREG) 7.5 8.0 8.8 V Boost Regulator Start-Up Voltage VINBSU – 1.6 1.8 V Boost Regulator Peak Current Limit (Power FET Peak Current) IPBD 0.75 1.0 1.5 A Boost Regulator Power FET Valley Current Limit (Low Level) ILBD 550 600 900 mA Boost Power FET RDS(ON) (16) IBST = 500 mA, VIN1 = VIN2 = 13.5V RDS(ON) – 900 – m Ω Boost Regulator Recommended Output Capacitor CBST – 10 – µF Boost Regulator Recommended Output Capacitor Maximum ESR ESRCBST – – 100 m Ω Notes 13. Design information only. It is not production tested. 14. All internal high level voltages are reference to the VDDI voltage. 15. When the input is above 8 V an integrated linear regulator will provide VBST; under this configuration the external inductor must be removed and the VBD pin left open (floating). 16. Guaranteed by design. Table 3. Static Electrical Characteristics (continued) Characteristics noted under conditions -40°C ≤ TJ ≤ 85°C unless otherwise noted. Input voltages 2.8 V ≤ VIN ≤ 13.5 V. Typical values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted. Characteristic Symbol Min Typ Max Unit |
Số phần tương tự - MC34703R2 |
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Mô tả tương tự - MC34703R2 |
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