Datasheet LTC3896 (Analog Devices) - 4

LTC3896
elecTrical characTerisTics The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2), VIN = 12V, VRUN = 5V with respect to GND, EXTVCC = 0V, V – DRVSET = 0V, VPRG = FLOAT unless otherwise noted. All pin voltages with respect to VOUT , unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
BG Pull-Up On-Resistance VDRVSET = INTVCC 2.0 Ω BG Pull-Down On-Resistance 1.0 Ω BOOST to DRVCC Switch On-Resistance VSW = 0V, VDRVSET = INTVCC 11 Ω TG Transition Time: (Note 6) VDRVSET = INTVCC Rise Time CLOAD = 3300pF 25 ns Fall Time CLOAD = 3300pF 15 ns BG Transition Time: (Note 6) VDRVSET = INTVCC Rise Time CLOAD = 3300pF 25 ns Fall Time CLOAD = 3300pF 15 ns Top Gate Off to Bottom Gate On Delay CLOAD = 3300pF each driver, VDRVSET = INTVCC 55 ns Synchronous Switch-On Delay Time Bottom Gate Off to Top Gate On Delay Top CLOAD = 3300pF each driver, VDRVSET = INTVCC 50 ns Switch-On Delay Time tON(MIN) TG Minimum On-Time (Note 7) VDRVSET = INTVCC 80 ns
DRVCC LDO Regulator
DRVCC Voltage from NDRV LDO Regulator NDRV Driving External NFET, VEXTVCC = 0V 7V < V – IN < 150V, DRVSET = VOUT 5.8 6.0 6.2 V 11V < VIN < 150V, DRVSET = INTVCC 9.6 10.0 10.4 V DRVCC Load Regulation from NDRV LDO NDRV Driving External NFET Regulator ICC = 0mA to 50mA, VEXTVCC = 0V 0 1.0 % DRVCC Voltage from Internal VIN LDO NDRV = DRVCC (NDRV LDO Off), VEXTVCC = 0V 7V < V – IN < 150V, DRVSET = VOUT 5.6 5.85 6.1 V 11V < VIN < 150V, DRVSET = INTVCC 9.5 9.85 10.3 V DRVCC Load Regulation from VIN LDO ICC = 0mA to 50mA, VEXTVCC = 0V DRVSET = VOUT 1.4 2.5 % DRVSET = INTVCC 0.9 2.0 % DRV – CC Voltage from Internal EXTVCC LDO 7V < VEXTVCC < 13V, DRVSET = VOUT 5.8 6.0 6.2 V 11V < VEXTVCC < 13V, DRVSET = INTVCC 9.6 10.0 10.4 V DRVCC Load Regulation from Internal ICC = 0mA to 50mA EXTV – CC LDO DRVSET = VOUT , VEXTVCC = 8.5V 0.7 2.0 % DRVSET = INTVCC, VEXTVCC = 13V 0.5 2.0 % EXTVCC LDO Switchover Voltage EXTVCC Ramping Positive DRVUV = V – OUT 4.5 4.7 4.9 V DRVUV = INTVCC, DRVSET = INTVCC 7.4 7.7 8.0 V EXTVCC Hysteresis 250 mV Programmable DRVCC RDRVSET = 50kΩ, NDRV Driving External NFET, 5.0 V VEXTVCC = 0V Programmable DRVCC RDRVSET = 70kΩ, NDRV Driving External NFET, 6.4 7.0 7.6 V VEXTVCC = 0V Programmable DRVCC RDRVSET = 90kΩ, NDRV Driving External NFET, 9.0 V VEXTVCC = 0V
INTVCC LDO Regulator
VINTVCC INTVCC Voltage ICC = 0mA to 2mA 4.7 5.0 5.2 V
Oscillator and Phase-Locked Loop
Programmable Frequency RFREQ = 25kΩ, PLLIN = DC Voltage 105 kHz Programmable Frequency RFREQ = 65kΩ, PLLIN = DC Voltage 375 440 505 kHz Programmable Frequency RFREQ = 105kΩ, PLLIN = DC Voltage 835 kHz 3896f 4 For more information www.linear.com/LTC3896 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts