Datasheet LT8642S (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | 18V, 10A Synchronous Step-Down Silent Switcher 2 |
| 页数 / 页 | 26 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION … |
| 文件格式/大小 | PDF / 1.4 Mb |
| 文件语言 | 英语 |
ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION http://www.linear.com/product/LT8642S#orderinfo
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LT8642S
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
VIN, EN/UV, PG, BIAS ..18V TOP VIEW FB, SS ...4V SYNC/MODE Voltage . ..6V Operating Junction Temperature Range (Note 2) FB PG V C SS SYNC/MODE CLKOUT 24 23 22 21 20 19 LT8642SE .. –40°C to 125°C BIAS 1 18 RT LT8642SI ... –40°C to 125°C INTV 2 25 26 17 EN/UV Storage Temperature Range .. –65°C to 150°C CC GND GND GND 3 16 GND Maximum Reflow (Package Body) Temperature ...260°C VIN 4 15 VIN 27 28 VIN 5 GND GND 14 VIN VIN 6 13 VIN 7 8 9 10 11 12 BST SW SW SW SW SW LQFN PACKAGE 24-LEAD (4mm × 4mm × 0.94mm) JEDEC BOARD: θJA = 38°C/W, θJC(PAD) = 7°C/W (NOTE 3) DEMO BOARD: θJA = 24°C/W EXPOSED PAD (PINS 25–28) ARE GND, SHOULD BE SOLDERED TO PCB
ORDER INFORMATION http://www.linear.com/product/LT8642S#orderinfo PACKAGE** MSL PART NUMBER PART MARKING* FINISH CODE PAD FINISH TYPE RATING TEMPERATURE RANGE
LT8642SEV#PBF –40°C to 125°C 8642S e4 Au (RoHS) LQFN (Laminate Package with QFN Footprint) 3 LT8642SIV#PBF –40°C to 125°C • Consult Marketing for parts specified with wider operating temperature • Terminal Finish Part Marking: www.linear.com/leadfree ranges. *Device temperature grade is identified by a label on the shipping • Recommended PCB Assembly and Manufacturing Procedures: container. www.linear.com/umodule/pcbassembly • Pad finish code is per IPC/JEDEC J-STD-609. • Package and Tray Drawings: www.linear.com/packaging Parts ending with PBF are RoHS and WEEE compliant. **The LT8642S package has the same dimensions as a standard 4mm × 4mm QFN package.
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage l 2.5 2.8 V VIN Quiescent Current in Shutdown VEN/UV = 0V, VIN = 12V 0.75 3 µA VIN Quiescent Current in Sleep VEN/UV = 2V, VFB > 0.597V, VSYNC = 0V, VBIAS = 0V, 230 290 µA VIN = 12V l 230 340 Feedback Reference Voltage VIN = 6V, VC = 1.25V 0.594 0.597 0.600 V VIN = 6V, VC = 1.25V l 0.586 0.597 0.606 V Feedback Voltage Line Regulation VIN = 4.0V to 18V l 0.004 0.02 %/V Feedback Pin Input Current VFB = 0.6V –20 20 nA Error Amplifier Transconductance VC = 1.25V 1.4 1.7 2.0 mS Error Amp Gain 340 Rev 0 2 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Applications Related Parts
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
VIN, EN/UV, PG, BIAS ..18V TOP VIEW FB, SS ...4V SYNC/MODE Voltage . ..6V Operating Junction Temperature Range (Note 2) FB PG V C SS SYNC/MODE CLKOUT 24 23 22 21 20 19 LT8642SE .. –40°C to 125°C BIAS 1 18 RT LT8642SI ... –40°C to 125°C INTV 2 25 26 17 EN/UV Storage Temperature Range .. –65°C to 150°C CC GND GND GND 3 16 GND Maximum Reflow (Package Body) Temperature ...260°C VIN 4 15 VIN 27 28 VIN 5 GND GND 14 VIN VIN 6 13 VIN 7 8 9 10 11 12 BST SW SW SW SW SW LQFN PACKAGE 24-LEAD (4mm × 4mm × 0.94mm) JEDEC BOARD: θJA = 38°C/W, θJC(PAD) = 7°C/W (NOTE 3) DEMO BOARD: θJA = 24°C/W EXPOSED PAD (PINS 25–28) ARE GND, SHOULD BE SOLDERED TO PCB
ORDER INFORMATION http://www.linear.com/product/LT8642S#orderinfo PACKAGE** MSL PART NUMBER PART MARKING* FINISH CODE PAD FINISH TYPE RATING TEMPERATURE RANGE
LT8642SEV#PBF –40°C to 125°C 8642S e4 Au (RoHS) LQFN (Laminate Package with QFN Footprint) 3 LT8642SIV#PBF –40°C to 125°C • Consult Marketing for parts specified with wider operating temperature • Terminal Finish Part Marking: www.linear.com/leadfree ranges. *Device temperature grade is identified by a label on the shipping • Recommended PCB Assembly and Manufacturing Procedures: container. www.linear.com/umodule/pcbassembly • Pad finish code is per IPC/JEDEC J-STD-609. • Package and Tray Drawings: www.linear.com/packaging Parts ending with PBF are RoHS and WEEE compliant. **The LT8642S package has the same dimensions as a standard 4mm × 4mm QFN package.
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage l 2.5 2.8 V VIN Quiescent Current in Shutdown VEN/UV = 0V, VIN = 12V 0.75 3 µA VIN Quiescent Current in Sleep VEN/UV = 2V, VFB > 0.597V, VSYNC = 0V, VBIAS = 0V, 230 290 µA VIN = 12V l 230 340 Feedback Reference Voltage VIN = 6V, VC = 1.25V 0.594 0.597 0.600 V VIN = 6V, VC = 1.25V l 0.586 0.597 0.606 V Feedback Voltage Line Regulation VIN = 4.0V to 18V l 0.004 0.02 %/V Feedback Pin Input Current VFB = 0.6V –20 20 nA Error Amplifier Transconductance VC = 1.25V 1.4 1.7 2.0 mS Error Amp Gain 340 Rev 0 2 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Applications Related Parts