Datasheet LT3507A (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Triple Monolithic Step-Down Regulator with LDO |
| Pages / Page | 30 / 3 — orDer inForMation. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*. … |
| File Format / Size | PDF / 398 Kb |
| Document Language | English |
orDer inForMation. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*. PACKAGE DESCRIPTION. TEMPERATURE RANGE
Model Line for this Datasheet
Text Version of Document
LT3507A
orDer inForMation LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3507AEUHF#PBF LT3507AEUHF#TRPBF 3507A 38-Lead (5mm × 7mm) Plastic QFN –40°C to 125°C LT3507AIUHF#PBF LT3507AIUHF#TRPBF 3507A 38-Lead (5mm × 7mm) Plastic QFN –40°C to 125°C LT3507AHUHF#PBF LT3507AHUHF#TRPBF 3507A 38-Lead (5mm × 7mm) Plastic QFN –40°C to 150°C LT3507AEFE#PBF LT3507AEFE#TRPBF LT3507AFE 38-Lead Plastic TSSOP –40°C to 125°C LT3507AIFE#PBF LT3507AIFE#TRPBF LT3507AFE 38-Lead Plastic TSSOP –40°C to 125°C LT3507AHFE#PBF LT3507AHFE#TRPBF LT3507AFE 38-Lead Plastic TSSOP –40°C to 150°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. 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 temperature range, otherwise specifications are at TA = 25°C. VIN1, VIN2, VIN3 = 12V, VBOOST1, VBOOST2, VBOOST3 = 17V, unless otherwise noted. (Notes 2, 7) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage Internal UVLO on VIN1 l 3.8 4 V Input Quiescent Current Not Switching, VBIAS = 3.3V 2 3.5 mA Bias Quiescent Current Not Switching, VBIAS = 3.3V 5 7.5 mA Shutdown Current VRUN1,2,3 = 0V 1 µA Reference Voltage Line Regulation 5V < VIN1 < 36V 0.01 %/V VC Source Current VC = 0.6V 20 µA VC Sink Current VC = 0.6V 30 µA VC Clamp Voltage 1.8 V Switching Frequency RT = 40.2k l 0.9 1.1 MHz Switching Phase SW1 to SW2,3, RT = 40.2k 180 Deg Foldback Frequency VFB = 0V, RT = 40.2k 120 kHz Frequency Shift Threshold on FB 0.4 V RUN Threshold 1 1.5 V PGOOD Output Voltage Low IPGOOD = 200µA 0.2 0.4 V PGOOD Pin Leakage VPGOOD = 2V 10 400 nA PGOOD Threshold Offset VFB Rising 58 80 105 mV Feedback Pin Voltage l 788 800 812 mV Feedback Pin Bias Current l –50 –500 nA Error Amplifier Transconductance 330 µS Error Amplifier Voltage Gain 500 V/V VC Switching Threshold 0.9 V Switch Leakage Current 0.01 10 µA Minimum Boost Voltage Above Switch (Note 4) 1.8 2.5 V ITRK/SS VTRK/SS = 0V 1.25 µA VIN1-VINSW IVINSW = 1mA 0.35 V
Converter 1
VC1 to Switch Current Gain 6 A/V 3507afa For more information www.linear.com/LT3507A 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Package Description Typical Applications Related Parts
orDer inForMation LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3507AEUHF#PBF LT3507AEUHF#TRPBF 3507A 38-Lead (5mm × 7mm) Plastic QFN –40°C to 125°C LT3507AIUHF#PBF LT3507AIUHF#TRPBF 3507A 38-Lead (5mm × 7mm) Plastic QFN –40°C to 125°C LT3507AHUHF#PBF LT3507AHUHF#TRPBF 3507A 38-Lead (5mm × 7mm) Plastic QFN –40°C to 150°C LT3507AEFE#PBF LT3507AEFE#TRPBF LT3507AFE 38-Lead Plastic TSSOP –40°C to 125°C LT3507AIFE#PBF LT3507AIFE#TRPBF LT3507AFE 38-Lead Plastic TSSOP –40°C to 125°C LT3507AHFE#PBF LT3507AHFE#TRPBF LT3507AFE 38-Lead Plastic TSSOP –40°C to 150°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. 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 temperature range, otherwise specifications are at TA = 25°C. VIN1, VIN2, VIN3 = 12V, VBOOST1, VBOOST2, VBOOST3 = 17V, unless otherwise noted. (Notes 2, 7) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage Internal UVLO on VIN1 l 3.8 4 V Input Quiescent Current Not Switching, VBIAS = 3.3V 2 3.5 mA Bias Quiescent Current Not Switching, VBIAS = 3.3V 5 7.5 mA Shutdown Current VRUN1,2,3 = 0V 1 µA Reference Voltage Line Regulation 5V < VIN1 < 36V 0.01 %/V VC Source Current VC = 0.6V 20 µA VC Sink Current VC = 0.6V 30 µA VC Clamp Voltage 1.8 V Switching Frequency RT = 40.2k l 0.9 1.1 MHz Switching Phase SW1 to SW2,3, RT = 40.2k 180 Deg Foldback Frequency VFB = 0V, RT = 40.2k 120 kHz Frequency Shift Threshold on FB 0.4 V RUN Threshold 1 1.5 V PGOOD Output Voltage Low IPGOOD = 200µA 0.2 0.4 V PGOOD Pin Leakage VPGOOD = 2V 10 400 nA PGOOD Threshold Offset VFB Rising 58 80 105 mV Feedback Pin Voltage l 788 800 812 mV Feedback Pin Bias Current l –50 –500 nA Error Amplifier Transconductance 330 µS Error Amplifier Voltage Gain 500 V/V VC Switching Threshold 0.9 V Switch Leakage Current 0.01 10 µA Minimum Boost Voltage Above Switch (Note 4) 1.8 2.5 V ITRK/SS VTRK/SS = 0V 1.25 µA VIN1-VINSW IVINSW = 1mA 0.35 V
Converter 1
VC1 to Switch Current Gain 6 A/V 3507afa For more information www.linear.com/LT3507A 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Package Description Typical Applications Related Parts
