Datasheet LTC3779 (Analog Devices) - 4
| Fabricante | Analog Devices |
| Descripción | 150V VIN and VOUT Synchronous 4-Switch Buck-Boost Controller |
| Páginas / Página | 38 / 4 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| Revisión | A |
| Formato / tamaño de archivo | PDF / 2.6 Mb |
| Idioma del documento | Inglés |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the specified operating
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LTC3779
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 = 15V, VRUN = 5V, VEXTVCC = 0V, VDRVSET = 0V, VVINOV = 0V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Top Gate Off to Bottom Gate On Delay CLOAD = 3300pF Each Driver, VDRVSET = V5 60 ns Synchronous Switch-On Delay Time Bottom Gate Off to Top Gate On Delay CLOAD = 3300pF Each Driver, VDRVSET = V5 60 ns Top Switch-On Delay Time
DRVCC LDO Regulator
VDRVCC DRVCC Regulation Voltage from NDRV NDRV Driving External NFET, VEXTVCC = 0V Regulator 7V < VIN < 150V, VDRVSET = 0V 5.8 6.1 6.4 V 8V < VIN < 150V, VDRVSET = 1/4 VV5 6.8 7.1 7.4 V 9V < VIN < 150V, VDRVSET = Float 7.8 8.1 8.4 V 10V < VIN < 150V, VDRVSET = 3/4 VV5 8.75 9.1 9.45 V 11V < VIN < 150V, VDRVSET = VV5 9.65 10 10.35 V DRVCC Regulation Voltage from Internal VNDRV = VDRVCC, VEXTVCC = 0V VIN LDO 7V < VIN < 150V, VDRVSET = 0V 5.5 5.8 6.1 V 8V < VIN < 150V, VDRVSET = 1/4 VV5 6.5 6.8 7.1 V 9V < VIN < 150V, VDRVSET = Float 7.5 7.8 8.1 V 10V < VIN < 150V, VDRVSET = 3/4 VV5 8.45 8.8 9.15 V 11V < VIN < 150V, VDRVSET = VV5 9.15 9.5 9.85 V DRVCC Load Regulation from VIN LDO ICC = 0mA to 50mA, VEXTVCC = 0V 0.5 2 % VEXTVCC DRVCC Regulation Voltage from Internal 7V < VEXTVCC < 30V, VDRVSET = 0V 5.8 6.1 6.4 V EXTVCC LDO 8V < VEXTVCC < 30V, VDRVSET = 1/4 VV5 6.8 7.1 7.4 V 9V < VEXTVCC < 30V, VDRVSET = Float 7.8 8.1 8.4 V 10V < VEXTVCC < 30V, VDRVSET = 3/4 VV5 8.75 9.1 9.45 V 11V < VEXTVCC < 30V, VDRVSET = VV5 9.65 10 10.35 V DRVCC Load Regulation from Internal ICC = 0mA to 50mA, VEXTVCC = 12V 0.5 2 % EXTVCC LDO VDRVSET = 0V EXTVCC LDO Switchover Voltage EXTVCC Ramping Positive DRVCC – 0.5 V EXTVCC Hysteresis % of DRVCC Regulation Voltage 10 %
V5 Linear Regulator
V5 Regulation Voltage 6V < VDRVCC < 10V 5.3 5.5 5.7 V V5 Load Regulation IV5 = 0mA to 20mA, VDRVCC = 10V 0.5 1 %
Oscillator and Phase-Locked Loop
Nominal Frequency RFREQ = 68.5kΩ 225 250 275 kHz Low Fixed Frequency RFREQ ≤ 20kΩ 30 40 50 kHz High Fixed Frequency RFREQ = 135kΩ 450 500 550 kHz PLLIN Input Threshold VPLLIN Rising 2 V VPLLIN Falling 1.2 V PLLIN Input Resistance 200 kΩ Synchronizable Oscillator Frequency PLLIN = External Clock l 50 600 kHz IFREQ Frequency Setting Current l 18 20 22 µA
PGOOD Output
PGOOD Voltage Low IPGOOD = 2mA 0.1 0.3 V PGOOD Leakage Current VPGOOD = 5.5V ±1 µA PGOOD Trip Level VFB with Respect to Set Regulated Voltage VFB Ramping Negative –10 % VFB Ramping Positive 10 % PGOOD delay VPGOOD High to Low 125 µs Rev A 4 For more information www.analog.com Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS
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 = 15V, VRUN = 5V, VEXTVCC = 0V, VDRVSET = 0V, VVINOV = 0V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Top Gate Off to Bottom Gate On Delay CLOAD = 3300pF Each Driver, VDRVSET = V5 60 ns Synchronous Switch-On Delay Time Bottom Gate Off to Top Gate On Delay CLOAD = 3300pF Each Driver, VDRVSET = V5 60 ns Top Switch-On Delay Time
DRVCC LDO Regulator
VDRVCC DRVCC Regulation Voltage from NDRV NDRV Driving External NFET, VEXTVCC = 0V Regulator 7V < VIN < 150V, VDRVSET = 0V 5.8 6.1 6.4 V 8V < VIN < 150V, VDRVSET = 1/4 VV5 6.8 7.1 7.4 V 9V < VIN < 150V, VDRVSET = Float 7.8 8.1 8.4 V 10V < VIN < 150V, VDRVSET = 3/4 VV5 8.75 9.1 9.45 V 11V < VIN < 150V, VDRVSET = VV5 9.65 10 10.35 V DRVCC Regulation Voltage from Internal VNDRV = VDRVCC, VEXTVCC = 0V VIN LDO 7V < VIN < 150V, VDRVSET = 0V 5.5 5.8 6.1 V 8V < VIN < 150V, VDRVSET = 1/4 VV5 6.5 6.8 7.1 V 9V < VIN < 150V, VDRVSET = Float 7.5 7.8 8.1 V 10V < VIN < 150V, VDRVSET = 3/4 VV5 8.45 8.8 9.15 V 11V < VIN < 150V, VDRVSET = VV5 9.15 9.5 9.85 V DRVCC Load Regulation from VIN LDO ICC = 0mA to 50mA, VEXTVCC = 0V 0.5 2 % VEXTVCC DRVCC Regulation Voltage from Internal 7V < VEXTVCC < 30V, VDRVSET = 0V 5.8 6.1 6.4 V EXTVCC LDO 8V < VEXTVCC < 30V, VDRVSET = 1/4 VV5 6.8 7.1 7.4 V 9V < VEXTVCC < 30V, VDRVSET = Float 7.8 8.1 8.4 V 10V < VEXTVCC < 30V, VDRVSET = 3/4 VV5 8.75 9.1 9.45 V 11V < VEXTVCC < 30V, VDRVSET = VV5 9.65 10 10.35 V DRVCC Load Regulation from Internal ICC = 0mA to 50mA, VEXTVCC = 12V 0.5 2 % EXTVCC LDO VDRVSET = 0V EXTVCC LDO Switchover Voltage EXTVCC Ramping Positive DRVCC – 0.5 V EXTVCC Hysteresis % of DRVCC Regulation Voltage 10 %
V5 Linear Regulator
V5 Regulation Voltage 6V < VDRVCC < 10V 5.3 5.5 5.7 V V5 Load Regulation IV5 = 0mA to 20mA, VDRVCC = 10V 0.5 1 %
Oscillator and Phase-Locked Loop
Nominal Frequency RFREQ = 68.5kΩ 225 250 275 kHz Low Fixed Frequency RFREQ ≤ 20kΩ 30 40 50 kHz High Fixed Frequency RFREQ = 135kΩ 450 500 550 kHz PLLIN Input Threshold VPLLIN Rising 2 V VPLLIN Falling 1.2 V PLLIN Input Resistance 200 kΩ Synchronizable Oscillator Frequency PLLIN = External Clock l 50 600 kHz IFREQ Frequency Setting Current l 18 20 22 µA
PGOOD Output
PGOOD Voltage Low IPGOOD = 2mA 0.1 0.3 V PGOOD Leakage Current VPGOOD = 5.5V ±1 µA PGOOD Trip Level VFB with Respect to Set Regulated Voltage VFB Ramping Negative –10 % VFB Ramping Positive 10 % PGOOD delay VPGOOD High to Low 125 µs Rev A 4 For more information www.analog.com Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS