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LTC3562 Datasheet(PDF) 3 Page - Linear Technology |
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LTC3562 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 20 page  LTC3562 3 3562fa BUCK DC/DC ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, VIN = 3.8V, VOUTx = 1.5V, unless otherwise noted. ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, VIN = 3.8V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS I2C Port DVCC Operating Voltage l 1.5 5.5 V DVCC Operating Current DVCC = 1.8V, Serial Port Idle 1 μA DVCC UVLO Threshold Voltage 1V VIL SDA, SCL (Low Level Input Voltage) 0.3 • DVCC V VIH SDA, SCL (High Level Input Voltage) 0.7 • DVCC V VOL SDA (Digital Output Low) IPULLUP = 3mA 0.08 V Serial Port Timing (Note 4) tSCL Clock Operating Frequency 400 kHz tBUF Bus Free Time Between Stop and Start Conditions 1.3 μs tHD,STA Hold Time After (Repeated) Start Condition 0.6 μs tSU,STA Repeated Start Condition Setup Time 0.6 μs tSU,STO Stop Condition Setup Time 0.6 μs tHD,DAT(OUT) Data Hold Time 225 ns tHD,DAT(IN) Input Data Hold Time 0 900 ns tSU,DAT Data Setup Time 100 ns tLOW Clock Low Period 1.3 μs tHIGH Clock High Period 0.6 μs tf Clock Data Fall Time 20 300 ns tr Clock Data Rise Time 20 300 ns tSP Spike Suppression Time 50 ns PARAMETER CONDITIONS MIN TYP MAX UNITS Regulators R600A, R400A, R600B, R400B fOSC 1.91 2.25 2.59 MHz Maximum Duty Cycle Pulse Skip Mode 100 % LDO Mode Closed Loop ROUT LDO Mode 0.25 Ω Regulators R600A, R600B PMOS Switch Current Limit Pulse Skip Mode 850 1200 1500 mA PMOS RDS(ON) 0.38 Ω NMOS RDS(ON) 0.38 Ω LDO Mode Open Loop ROUT LDO Mode 2.2 Ω Available Output Current Forced Burst Mode LDO, VOUT = 1.2V 75 50 140 mA mA SW Pull-Down in Shutdown Shutdown 2.5 kΩ |
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