ltm8020 Linear Technology Corporation, ltm8020 Datasheet
ltm8020
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ltm8020 Summary of contents
Page 1
... Included in the package are the switch- ing controller, power switches, inductor, and all support components. Operating over an input voltage range 36V, the LTM8020 supports an output voltage range of 1.25V to 5V, set by a single resistor. Only bulk capacitors are needed to fi nish the design. ...
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... Lead Temperature (Soldering, 10 sec) .................... 240° ORDER INFORMATION LEAD FREE FINISH PART MARKING LTM8020EV#PBF LTM8020V Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. For more information on lead free part marking, go to: This product is only offered in trays. For more information go to: ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi ...
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... V = 2.5V ⎯ S ⎯ H ⎯ D ⎯ N Note 2: The LTM8020E is guaranteed to meet performance specifi cations from 0°C to 85°C provided the maximum internal temperature rating is not exceeded. Specifi cations over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls ...
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... LTM8020 TYPICAL PERFORMANCE CHARACTERISTICS 5V Power Loss OUT 1000 100 10 1 12V 24V 36V 0.1 0 100 I (mA) OUT 8020 G04 Input Current vs Output Current (24V ) IN 0.060 1.8V OUT 2.5V OUT 3.3V 0.050 OUT 5V OUT 0.040 0.030 0.020 0.010 0 0 0.05 0.10 0.15 OUTPUT CURRENT (A) 4356 G07 Input Current vs Input Voltage ...
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... G13 ⎯ S ⎯ H ⎯ D ⎯ N (Pin C1): The SHDN pin is used to put the LTM8020 in shutdown mode. Tie to ground to shut down the LTM8020. Apply 2V or more for normal operation. If the shutdown feature is not used, tie this pin to V GND (Pins C2, D1, D2, D3, D4, D5, E2, E3, E4, E5): The ...
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... LTM8020 BLOCK DIAGRAM V IN 0.1μF SHDN CONTROLLER GND 6 CURRENT MODE 22μH V OUT 15pF 499k 10μF BIAS ADJ 80220 BD 8020f ...
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... The input voltage range 36V. Given that the LTM8020 is a step down con- verter, make sure that the input voltage is high enough to support the desired output voltage and load current. See Block Diagram ...
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... A fi nal precaution regarding ceramic capacitors concerns the maximum input voltage rating of the LTM8020. A ceramic input capacitor combined with trace or cable inductance forms a high Q (under damped) tank circuit. If the LTM8020 circuit is plugged into a live supply, the – 1.25), input voltage can ring to twice its nominal value, possi- OUT bly exceeding the device’ ...
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... The small size, robustness and low impedance of ceramic capacitors make them an attractive option for the input bypass capacitor of LTM8020. However, these capacitors can cause problems if the LTM8020 is plugged into a live IN supply (see Linear Technology Application Note 88 for a complete discussion). The low loss ceramic capacitor ...
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... AI.EI. 0.1μF Figure 4. A Well Chosen Input Network Prevents Input Voltage Overshoot and Ensures Reliable Operation When the LTM8020 is Connected to a Live Supply 10 Finally, be aware that at high ambient temperatures the internal Schottky diode will have signifi cant leakage current increasing the quiescent current of the LTM8020. ...
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... X5R Open 47μF 6.3V 1206 X5R 2.43M 22μF 6.3V 1206 X7R 1.1M 10μF 6.3V 0805 X7R 499k 10μF 6.3V 0805 X7R 301k 10μF 6.3V 0805 X7R 165k 22μF 6.3V 0805 X7R 301k 10μF 6.3V 0805 X7R 165k LTM8020 BIAS Connection >2V, < 25V >2V, < 25V >2V, < 25V V OUT V OUT V OUT ...
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... ADJ 8020 TA02 3.3V Step-Down Converter OUT LTM8020 1μF SHDN BIAS GND ADJ 301k 1% 8020 TA04 1.8V Step-Down Converter OUT LTM8020 2.2μF SHDN BIAS GND ADJ 1.1M 1% 8020 TA03 V OUT 1.25V 200mA 47μF X5R V OUT 3.3V 200mA 10μF X5R V OUT 1.8V 200mA 22μ ...
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... V IN OUT 5V TO 30V LTM8020 SHDN BIAS 2.2μF GND –5V ADJ 85mA –5V 10μF 165k X5R 1% –5V Positive to Negative Converter Output vs Input Voltage 250 200 150 100 (V) IN 8020 TA08 LTM8020 V OUT 5V 200mA 8020 TA06 13 8020f ...
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... LTM8020 PACKAGE DESCRIPTION bbb 2.5400 1.2700 0.0000 1.2700 2.5400 0.3175 0.0000 0.3175 8020f ...
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... Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTM8020 Pinout (Sorted by Pin Number) PIN SIGNAL DESCRIPTION ...
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... McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● 3.3V Step-Down Converter OUT LTM8020 1μF SHDN BIAS GND ADJ 301k 1% 8020 TA07 COMMENTS Basic 10A DC/DC μModule, 15mm × 15mm × 2.8mm LGA –55°C to 125°C Operation, 15mm × 15mm × 2.8mm LGA ...