Datasheet LTM8021 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | 36VIN, 500mA Step-Down DC/DC µModule |
| 页数 / 页 | 18 / 1 — FeaTures. DescripTion. Complete Switch Mode Power Supply. Wide Input … |
| 文件格式/大小 | PDF / 388 Kb |
| 文件语言 | 英语 |
FeaTures. DescripTion. Complete Switch Mode Power Supply. Wide Input Voltage Range: 3V to 36V. 500mA Output Current
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LTM8021 36VIN, 500mA Step-Down DC/DC µModule
FeaTures DescripTion
n
Complete Switch Mode Power Supply
The LTM®8021 is a 36VIN 500mA, step-down DC/DC n
Wide Input Voltage Range: 3V to 36V
µModule®. Included in the package are the switching n
500mA Output Current
controller, power switches, inductor, and all support n
0.8V to 5V Output Voltage
components. Operating over an input voltage range of 3V n Fixed 1.1MHz Switching Frequency to 36V, the LTM8021 supports an output voltage range of n Current Mode Control 0.8V to 5V, set by a single resistor. Only an output and n (e4) RoHS Compliant Package with Gold bulk input capacitor are needed to finish the design. Pad Finish The low profile package (2.82mm) enables utilization of n Programmable Soft-Start unused space on the bottom of PC boards for high den- n Tiny, Low Profile (11.25mm × 6.25mm × 2.82mm) sity point of load regulation. A built-in soft-start timer is Surface Mount LGA Package adjustable with just a resistor and capacitor.
applicaTions
The LTM8021 is packaged in a thermally enhanced, n compact (11.25mm × 6.25mm) and low profile (2.82mm) Automotive Battery Regulation n overmolded land grid array (LGA) package suitable Power for Portable Products n for automated assembly by standard surface mount Distributed Supply Regulation n equipment. The LTM8021 is RoHS compliant. Industrial Supplies n Wall Transformer Regulation L, LT, LTC, LTM, µModule, PolyPhase, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Typical applicaTion 7VIN to 36VIN, 5V/500mA µModule Regulator Efficiency and Power Loss
90 450 LTM8021 V 400 IN* V 80 7V TO OUT IN OUT 5V AT 500mA 350 36V EFFICIENCY POWER LOSS (mW) BIAS 70 300 RUN/SS 250 GND ADJ 60 200 1µF 19.1k 2.2µF EFFICIENCY (%) 50 150 POWER 100 LOSS 8021 TA01a 40 50 *RUNNING VOLTAGE RANGE. PLEASE REFER TO THE 30 0 APPLICATIONS INFORMATION SECTION FOR START-UP DETAILS. 1.00 10.00 100.00 1000.00 LOAD CURRENT (mA) 8021 TA01b 8021fd For more information www.linear.com/LTM8021 1 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 Typical Applications Package Description Revision History Package Photo Typical Application Related Parts
FeaTures DescripTion
n
Complete Switch Mode Power Supply
The LTM®8021 is a 36VIN 500mA, step-down DC/DC n
Wide Input Voltage Range: 3V to 36V
µModule®. Included in the package are the switching n
500mA Output Current
controller, power switches, inductor, and all support n
0.8V to 5V Output Voltage
components. Operating over an input voltage range of 3V n Fixed 1.1MHz Switching Frequency to 36V, the LTM8021 supports an output voltage range of n Current Mode Control 0.8V to 5V, set by a single resistor. Only an output and n (e4) RoHS Compliant Package with Gold bulk input capacitor are needed to finish the design. Pad Finish The low profile package (2.82mm) enables utilization of n Programmable Soft-Start unused space on the bottom of PC boards for high den- n Tiny, Low Profile (11.25mm × 6.25mm × 2.82mm) sity point of load regulation. A built-in soft-start timer is Surface Mount LGA Package adjustable with just a resistor and capacitor.
applicaTions
The LTM8021 is packaged in a thermally enhanced, n compact (11.25mm × 6.25mm) and low profile (2.82mm) Automotive Battery Regulation n overmolded land grid array (LGA) package suitable Power for Portable Products n for automated assembly by standard surface mount Distributed Supply Regulation n equipment. The LTM8021 is RoHS compliant. Industrial Supplies n Wall Transformer Regulation L, LT, LTC, LTM, µModule, PolyPhase, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Typical applicaTion 7VIN to 36VIN, 5V/500mA µModule Regulator Efficiency and Power Loss
90 450 LTM8021 V 400 IN* V 80 7V TO OUT IN OUT 5V AT 500mA 350 36V EFFICIENCY POWER LOSS (mW) BIAS 70 300 RUN/SS 250 GND ADJ 60 200 1µF 19.1k 2.2µF EFFICIENCY (%) 50 150 POWER 100 LOSS 8021 TA01a 40 50 *RUNNING VOLTAGE RANGE. PLEASE REFER TO THE 30 0 APPLICATIONS INFORMATION SECTION FOR START-UP DETAILS. 1.00 10.00 100.00 1000.00 LOAD CURRENT (mA) 8021 TA01b 8021fd For more information www.linear.com/LTM8021 1 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 Typical Applications Package Description Revision History Package Photo Typical Application Related Parts