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LTC3829 Datasheet(PDF) 4 Page - Linear Technology |
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LTC3829 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 40 page  LTC3829 4 3829fc For more information www.linear.com/LTC3829 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VRUN = 5V, unless otherwise noted. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS TG1,2,3 tr TG1,2,3 tf TG Transition Time Rise Time Fall Time (Note 6) CLOAD = 3300pF CLOAD = 3300pF 25 25 ns ns BG1,2,3 tr BG1,2,3 tf BG Transition Time Rise Time Fall Time (Note 6) CLOAD = 3300pF CLOAD = 3300pF 25 25 ns ns TG/BG t1D Top Gate Off to Bottom Gate On Delay Synchronous Switch-On Delay Time CLOAD = 3300pF Each Driver 30 ns BG/TG t2D Bottom Gate Off to Top Gate On Delay Top Switch-On Delay Time CLOAD = 3300pF Each Driver 30 ns tON(MIN) Minimum On-Time (Note 7) 90 ns INTVCC Linear Regulator VINTVCC Internal VCC Voltage 6V < VIN ≤ 38V 4.8 5.0 5.2 V VLDO INT INTVCC Load Regulation ICC = 0mA to 20mA 0.5 2.0 % VEXTVCC EXTVCC Switchover Voltage EXTVCC Ramping Positive l 4.5 4.7 V VLDO EXT EXTVCC Voltage Drop ICC = 20mA, VEXTVCC = 5V 50 100 mV VLDOHYS EXTVCC Hysteresis 200 mV Oscillator and Phase-Locked Loop fNOM Nominal Frequency VFREQ = 1.2V 450 500 550 kHz fLOW Lowest Frequency VFREQ = 0V 210 250 290 kHz fHIGH Highest Frequency VFREQ ≥ 2.4V 700 770 850 kHz RPLLN PLLIN Input Resistance 100 kΩ IFREQ Frequency Setting Current 9 10 11 µA IISET Shed and Burst Mode Program Current 6.5 7.5 8.5 µA CLKOUT Phase (Relative to Controller 1) Non-Shedding Mode Channel 2 and 3 Shedding 60 180 Deg Deg CLKHIGH Clock High Output Voltage 4 5 V CLKLOW Clock Low Output Voltage 0 0.2 V PGOOD Output VPGL PGOOD Voltage Low IPGOOD = 2mA 0.1 0.3 V IPGOOD PGOOD Leakage Current VPGOOD = 5V 0 ±2 µA VPG PGOOD Trip Level, Either Controller VFB with Respect to Set Output Voltage VFB Ramping Negative VFB Ramping Positive –12 8 –10 10 –7 13 % % Differential Amplifier ADA Gain l 0.997 1 1.003 V/V RIN Input Resistance Measured at DIFFP Input 80 kΩ VOS Input Offset Voltage VDIFFP = VDIFFOUT = 1.5V, IDIFFOUT = 100µA 2.5 mV PSRR Power Supply Rejection Ratio 5V < VIN < 38V 100 dB ICL Maximum Output Current 3 mA VOUT(MAX) Maximum Output Voltage INTVCC = 5V, IDIFFOUT = 300µA VINTVCC – 1.4 VINTVCC – 1.1 V GBW Gain-Bandwidth Product (Note 8) 3 MHz SR Slew Rate (Note 8) 2 V/µs |
Similar Part No. - LTC3829_15 |
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Similar Description - LTC3829_15 |
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