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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTC3589 датащи(PDF) 4 Page - Linear Technology |
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LTC3589 датащи(HTML) 4 Page - Linear Technology |
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4 / 44 page  LTC3589 4 3589p ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Operating Input Supply Voltage, VIN l 2.7 5.5 V IVINLDO1 VIN Quiescent Current All Enables = 0V l 10 17 μA fOSC Oscillator Frequency l 1.9 2.25 2.6 MHz Step Down Switching Regulators 1, 2, and 3 IVIN Pulse-Skipping Mode VIN Quiescent Current Per Buck Burst Mode® VIN Quiescent Current Per Buck VFB = 0.85V (Note 5) l l 135 27 TBD 40 μA μA IFB Feedback Pin Input Current VFB = 0.8V –0.1 0.1 μA DX Maximum Duty Cycle VFB = 0V 100 % RSW SW Pull-Down Resistance Regulators Disabled 2000 Ω tSS Soft-Start Rate (Note 6) 2 V/ms VFB(MAX) Maximum Feedback Voltage BxDTV1 = BxDTV2 = 11111, VIN = 2.7V to 5.5V l 0.735 0.75 0.765 V VFB(LSB) Feedback LSB Step Size 12.5 mV VFB(MIN) Minimum Feedback Voltage BxDTV1 = BxDTV2 = 00000, VIN = 2.7V to 5.5V l 0.351 0.3625 0.374 V 1.6A Step Down Switching Regulator 1 (Buck 1) ILIM1 Peak PMOS Current Limit SW1 l 2.2 2.7 A RP1 RDS(ON) of PMOS1 ISW1 = 100mA 180 mΩ RN1 RDS(ON) of NMOS1 ISW1 = 100mA 110 mΩ 1.0A Step Down Switching Regulators 2 and 3 ILIM2, 3 Peak PMOS Current Limit SW2 l 1.5 1.9 A RP2, 3 RDS(ON) of PMOS3 250 mΩ RN2, 3 RDS(ON) of NMOS3 130 mΩ 1.2A Buck-Boost Switching Regulator 4 (Buck-Boost) IVIN PWM Mode VIN Quiescent Current Burst Mode VIN Quiescent Current VBB_FB = 0.85V l l 130 19 μA μA VBB_FB Feedback Voltage VIN = 2.7V to 5.5V, VOUT = 5.5V l 0.776 0.8 0.824 V VOUTBB Output Voltage Range 1.8 5.0 V ILIM4 Peak PMOS Current Limit SW4AB l 2.5 2.7 A IPEAK4 Forward Burst Current Limit (Switch A) Burst Mode Operation 500 mA ILIMR4 Reverse Current Limit (Switch D) 800 mA IZERO4 Reverse Burst Current Limit (Switch D) Burst Mode Operation 0 mA RP4 RDS(ON) of Switch A and Switch D ISW4AB = ISW4CD = 100mA 160 mΩ RN4 RDS(ON) of Switch B and Switch C ISW4AB = ISW4CD = –100mA 110 mΩ ROUT4 BB_OUT Pull-Down Resistance Regulator Disabled 2000 Ω tSS Soft-Start Rate (Note 6) 2 V/ms IFB Feedback Pin Input Current VFB = 0.85V –0.1 0.1 μA The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = PVIN1 = PVIN2 = PVIN3 = PVIN4 = VIN_LDO2 = VIN_LDO34 = DVDD = 3.8V. All regulators disabled unless otherwise noted. |
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