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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LT3750 датащи(PDF) 3 Page - Linear Technology |
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LT3750 датащи(HTML) 3 Page - Linear Technology |
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3 / 16 page  LTC3226 3 3226fa ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C (Note 3). VIN = 3.3V, VCPO = 5V, VOUT = 3.3V, VMID = 1/2 VCPO unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Input Supply Range l 2.5 5.5 V IVIN(ST) VIN Quiescent Current in Normal Mode VPFI > 1.2V, VCPO_FB > 1.2V, VIN < VCPO 10 μA ICPO(ST) CPO Quiescent Current in Normal Mode VPFI > 1.2V, VCPO_FB > 1.2V, VIN < VCPO 20 μA IVOUT(ST) VOUT Quiescent Current in Normal Mode VOUT = VIN, VPFI > 1.2V, VCPO_FB > 1.2V, VIN < VCPO 5μA ICPO(BU) CPO Quiescent Current in Backup Mode VPFI < 1.2V, VLDO_FB > 0.8V, VCPO > VOUT 24 μA IVOUT(BU) VOUT Quiescent Current in Backup Mode VIN = 0V, VPFI < 1.2V, VLDO_FB > 0.8V, VCPO > VOUT 3μA Ideal Diode Controller VFWD(EDA) External Ideal Diode Forward Voltage (VIN-VOUT)IVOUT = 2mA 15 mV VRTO Fast Turn-Off Voltage (VIN-VOUT)VIN Falling –45 mV Fast Turn-On Voltage (VIN-VOUT)VOUT Falling 45 mV Charge Pump Supercapacitor Charger VCPO_FB CPO_FB Pin Threshold for Entering Sleep Mode l 1.18 1.21 1.24 V CPO_FB Pin Hysteresis for Exiting Sleep Mode 20 mV ICPO_FB Charge Pump FB Pin Input Leakage VCPO_FB = 1.3V l –50 50 nA fOSC CLK Frequency 0.75 0.9 1.05 MHz ROL Effective Open-Loop Output Impedance (Note 4) VCPO = 4.5V, CFLY = 1μF 6 Ω VPROG PROG Pin Servo Voltage VCPO_FB < 1.2V l 0.98 1.0 1.02 V IVIN(ILIM) Input Current Limit RPROG = 33.3k, VCPO = 0V 360 mA hPROG Ratio of VIN Input Current Limit to PROG Pin Current RPROG = 33.3k, VCPO = 0V 10,500 A/A ICHRG(1x) CPO Pin Charging Current (1x Mode) VIN = 3.8V, RPROG = 33.3k, VCPO = 3V 315 mA ICHRG(2x) CPO Pin Charging Current (2x Mode) RPROG = 33.3k 157.5 mA ISC Short-Circuit Charge Current PROG Pin Grounded, VCPO = 0V 600 mA VMODE VIN to CPO Voltage Differential for Switching Mode from 1x to 2x 200 mV 1x/2x Mode Comparator Hysteresis 120 mV VCLAMP Maximum Voltage Across Either Supercapacitor After Charging l 2.65 2.75 V VSTACK Maximum Supercapacitor Stack Voltage l 5.3 5.5 V VMID VMID Output Voltage 2.5 V VMID Current Sourcing Capability VMID < VCPO/2, VCPO_FB > 1.24V 4.5 mA VMID Current Sinking Capability VMID > VCPO/2, VCPO_FB > 1.24V 5.5 mA CPO_FB Pin Threshold Voltage (Rising) for CAPGOOD l 1.09 1.11 1.13 V CPO_FB Pin Hysteresis for CAPGOOD 20 mV CAPGOOD Output Low Voltage ISINK = 5mA 65 mV CAPGOOD High Impedance Leakage Current VCAPGOOD = 5V l 1μA |
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