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LTC3586 Datasheet(PDF) 5 Page - Linear Technology |
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LTC3586 Datasheet(HTML) 5 Page - Linear Technology |
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5 / 36 page  LTC3586/LTC3586-1 3586fb elecTrical characTerisTics The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VBUS = 5V, BAT = 3.8V, VIN1 = VIN2 = VIN3 = VIN4 = VOUT3 = 3.8V, VOUT4 = 5V, RPROG = 1k, RCLPROG = 3.01k, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Switching Regulators 1 and 2 (Buck) IVIN1,2 Pulse-Skip Mode Input Current Burst Mode® Input Current Shutdown Input Current IVOUT1,2 = 0µA, (Note 7) IVOUT1,2 = 0µA, (Note 7) IVOUT1,2 = 0µA, (Note 7) 225 35 60 1 µA µA µA ILIM1,2 PMOS Switch Current Limit Pulse-Skip/Burst Mode Operation (Note 5) 600 800 1100 mA RP1,2 PMOS RDS(ON) 0.6 Ω RN1,2 NMOS RDS(ON) 0.7 Ω D1,2 Maximum Duty Cycle 100 % RSW1,2 SW1,2 Pull-Down in Shutdown 10 kΩ Switching Regulator 3 (Buck-Boost) IVIN3 Input Current PWM Mode, IVOUT3 = 0µA Burst Mode Operation, IVOUT3 = 0µA Shutdown 220 13 0 400 20 1 µA µA µA VOUT3(LOW) Minimum Regulated Output Voltage For Burst Mode Operation or PWM Mode 2.65 2.75 V VOUT3(HIGH) Maximum Regulated Output Voltage 5.5 5.6 V ILIMF3 Forward Current Limit (Switch A) PWM Mode (Note 5) l 2 2.5 3 A IPEAK3(BURST) Forward Burst Current Limit (Switch A) Burst Mode Operation l 200 275 350 mA IZERO3(BURST) Reverse Burst Current Limit (Switch D) Burst Mode Operation l –30 0 30 mA IMAX3(BURST) Maximum Deliverable Output Current in Burst Mode Operation 2.7V ≤ VIN3 ≤ 5.5V, 2.75V ≤ VOUT3 ≤ 5.5V (Note 8) 50 mA RDS(ON)P PMOS RDS(ON) Switches A, D 0.22 Ω RDS(ON)N NMOS RDS(ON) Switches B, C 0.17 Ω ILEAK(P) PMOS Switch Leakage Switches A, D –1 1 µA ILEAK(N) NMOS Switch Leakage Switches B, C –1 1 µA RVOUT3 VOUT3 Pull-Down in Shutdown 10 kΩ DBUCK(MAX) Maximum Buck Duty Cycle PWM Mode l 100 % DBOOST(MAX) Maximum Boost Duty Cycle PWM Mode 75 % tSS3 Soft-Start Time 0.5 ms Switching Regulator 4 (Boost) IVIN4 Input Current FB4 > 0.8V, IVOUT4 = 0µA Shutdown, VOUT4 = 0V 180 1 µA µA IVOUT4 Q-Current Drawn from Boost Output FB4 = 0V 7.5 mA ILIMF4 NMOS Switch Current Limit (Note 5) 2000 2800 mA VOUT4 Output Voltage Adjust Range 5 V VOV4 Overvoltage Shutdown 5.1 5.3 5.5 V ∆VOV4 Overvoltage Shutdown Hysteresis 0.3 V Burst Mode is a registered trademark of Linear Technology Corporation. |
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