Datasheet LTC3780 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | High Efficiency, Synchronous, 4-Switch Buck-Boost Controller |
| Pages / Page | 30 / 3 — ORDER INFORMATION LEAD FREE FINISH. TAPE AND REEL. PART MARKING. PACKAGE … |
| Revision | G |
| File Format / Size | PDF / 376 Kb |
| Document Language | English |
ORDER INFORMATION LEAD FREE FINISH. TAPE AND REEL. PART MARKING. PACKAGE DESCRIPTION. TEMPERATURE RANGE. LEAD BASED FINISH
Model Line for this Datasheet
Text Version of Document
LTC3780
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3780EG#PBF LTC3780EG#TRPBF LTC3780EG 24-Lead Plastic SSOP –40°C to 85°C LTC3780IG#PBF LTC3780IG#TRPBF LTC3780IG 24-Lead Plastic SSOP –40°C to 125°C LTC3780MPG#PBF LTC3780MPG#TRPBF LTC3780MPG 24-Lead Plastic SSOP –55°C to 125°C LTC3780EUH#PBF LTC3780EUH#TRPBF 3780 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3780IUH#PBF LTC3780IUH#TRPBF 3780I 32-Lead (5mm × 5mm) Plastic QFN –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3780EG LTC3780EG#TR LTC3780EG 24-Lead Plastic SSOP –40°C to 85°C LTC3780IG LTC3780IG#TR LTC3780IG 24-Lead Plastic SSOP –40°C to 125°C LTC3780MPG LTC3780MPG#TR LTC3780MPG 24-Lead Plastic SSOP –55°C to 125°C LTC3780EUH LTC3780EUH#TR 3780 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3780IUH LTC3780IUH#TR 3780I 32-Lead (5mm × 5mm) Plastic QFN –40°C to 125°C Contact the factory for parts specified with wider operating temperature ranges. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C. (Note 7) VIN = 15V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loop
VOSENSE Feedback Reference Voltage ITH = 1.2V, –40°C ≤ T ≤ 85°C (Note 3) l 0.792 0.800 0.808 V –55°C ≤ T ≤ 125°C l 0.792 0.800 0.811 V IVOSENSE Feedback Pin Input Current (Note 3) –5 –50 nA VLOADREG Output Voltage Load Regulation (Note 3) ∆ITH = 1.2V to 0.7V l 0.1 0.5 % ∆ITH = 1.2V to 1.8V l –0.1 –0.5 % VREF(LINEREG) Reference Voltage Line Regulation VIN = 4V to 30V, ITH = 1.2V (Note 3) 0.002 0.02 %/V gm(EA) Error Amplifier Transconductance ITH = 1.2V, Sink/Source = 3µA (Note 3) 0.32 mS gm(GBW) Error Amplifier GBW (Note 8) 0.6 MHz IQ Input DC Supply Current (Note 4) Normal 2400 µA Standby VRUN = 0V, VSTBYMD > 2V 1500 µA Shutdown Supply Current VRUN = 0V, VSTBYMD = Open 55 70 µA VFCB Forced Continuous Threshold 0.76 0.800 0.84 V IFCB Forced Continuous Pin Current VFCB = 0.85V –0.30 –0.18 –0.1 µA VBINHIBIT Burst Inhibit (Constant Frequency) Measured at FCB Pin 5.3 5.5 V Threshold UVLO Undervoltage Reset VIN Falling l 3.8 4 V VOVL Feedback Overvoltage Lockout Measured at VOSENSE Pin 0.84 0.86 0.88 V I – + SENSE Sense Pins Total Source Current VSENSE = VSENSE = 0V –380 µA VSTBYMD(START) Start-Up Threshold VSTBYMD Rising 0.4 0.7 V VSTBYMD(KA) Keep-Alive Power-On Threshold VSTBYMD Rising, VRUN = 0V 1.25 V Rev G For more information www.analog.com 3 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Block Diagram Operation Applications Information Typical Application Related Parts Features Applications Typical Application Description 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
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3780EG#PBF LTC3780EG#TRPBF LTC3780EG 24-Lead Plastic SSOP –40°C to 85°C LTC3780IG#PBF LTC3780IG#TRPBF LTC3780IG 24-Lead Plastic SSOP –40°C to 125°C LTC3780MPG#PBF LTC3780MPG#TRPBF LTC3780MPG 24-Lead Plastic SSOP –55°C to 125°C LTC3780EUH#PBF LTC3780EUH#TRPBF 3780 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3780IUH#PBF LTC3780IUH#TRPBF 3780I 32-Lead (5mm × 5mm) Plastic QFN –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3780EG LTC3780EG#TR LTC3780EG 24-Lead Plastic SSOP –40°C to 85°C LTC3780IG LTC3780IG#TR LTC3780IG 24-Lead Plastic SSOP –40°C to 125°C LTC3780MPG LTC3780MPG#TR LTC3780MPG 24-Lead Plastic SSOP –55°C to 125°C LTC3780EUH LTC3780EUH#TR 3780 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3780IUH LTC3780IUH#TR 3780I 32-Lead (5mm × 5mm) Plastic QFN –40°C to 125°C Contact the factory for parts specified with wider operating temperature ranges. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C. (Note 7) VIN = 15V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loop
VOSENSE Feedback Reference Voltage ITH = 1.2V, –40°C ≤ T ≤ 85°C (Note 3) l 0.792 0.800 0.808 V –55°C ≤ T ≤ 125°C l 0.792 0.800 0.811 V IVOSENSE Feedback Pin Input Current (Note 3) –5 –50 nA VLOADREG Output Voltage Load Regulation (Note 3) ∆ITH = 1.2V to 0.7V l 0.1 0.5 % ∆ITH = 1.2V to 1.8V l –0.1 –0.5 % VREF(LINEREG) Reference Voltage Line Regulation VIN = 4V to 30V, ITH = 1.2V (Note 3) 0.002 0.02 %/V gm(EA) Error Amplifier Transconductance ITH = 1.2V, Sink/Source = 3µA (Note 3) 0.32 mS gm(GBW) Error Amplifier GBW (Note 8) 0.6 MHz IQ Input DC Supply Current (Note 4) Normal 2400 µA Standby VRUN = 0V, VSTBYMD > 2V 1500 µA Shutdown Supply Current VRUN = 0V, VSTBYMD = Open 55 70 µA VFCB Forced Continuous Threshold 0.76 0.800 0.84 V IFCB Forced Continuous Pin Current VFCB = 0.85V –0.30 –0.18 –0.1 µA VBINHIBIT Burst Inhibit (Constant Frequency) Measured at FCB Pin 5.3 5.5 V Threshold UVLO Undervoltage Reset VIN Falling l 3.8 4 V VOVL Feedback Overvoltage Lockout Measured at VOSENSE Pin 0.84 0.86 0.88 V I – + SENSE Sense Pins Total Source Current VSENSE = VSENSE = 0V –380 µA VSTBYMD(START) Start-Up Threshold VSTBYMD Rising 0.4 0.7 V VSTBYMD(KA) Keep-Alive Power-On Threshold VSTBYMD Rising, VRUN = 0V 1.25 V Rev G For more information www.analog.com 3 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Block Diagram Operation Applications Information Typical Application Related Parts Features Applications Typical Application Description 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
