ltm8033 Linear Technology Corporation, ltm8033 Datasheet
ltm8033
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ltm8033 Summary of contents
Page 1
... Included in the package are the switching controller, power switches, inductor, filters and all support components. Operating over an input voltage range of 3.6V to 36V, the LTM8033 supports an output voltage range of 0.8V to 24V, and a switching frequency range of 200kHz to 2.4MHz, each set by a single resistor. ...
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... LTM8033EV#PBF LTM8033EV#PBF LTM8033IV#PBF LTM8033IV#PBF LTM8033MPV#PBF LTM8033MPV#PBF 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: This product is only offered in trays. For more information go to: ...
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... Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTM8033E is guaranteed to meet performance specifications from 0°C to 125°C internal. Specifications over the full –40°C to 125°C internal operating temperature range are assured by design, characterization and correlation with statistical process controls ...
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... LTM8033 TYPICAL PERFORMANCE CHARACTERISTICS 8V Efficiency OUT 95 12V 36V 24V 500 1000 1500 2000 2500 OUTPUT CURRENT (mA) 8033 G04 Bias Current vs Load Current, 2.5V OUT 12V IN 15 24V 36V 500 1000 ...
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... OUTPUT CURRENT (mA) Minimum Required Input Voltage vs Output Voltage OUT 3000 OUTPUT VOLTAGE (V) LTM8033 T = 25°C, unless otherwise noted. A Input Current vs Output Current 3.3V OUT 2500 2000 1500 5.5V IN 1000 500 IN 36V 500 1000 ...
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... LTM8033 TYPICAL PERFORMANCE CHARACTERISTICS Minimum Required Input Voltage vs Load Current, 3.3V OUT 6.0 5.5 TO START, WITH RUN = V IN 5.0 RUN/SS CONTROLLED START 4.5 4.0 TO RUN 3.5 3.0 0 500 1000 1500 2000 2500 LOAD CURRENT (mA) 8033 G22 Minimum Required Input Voltage vs Load Current, 12V OUT RUN OR START 16 15 ...
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... G31 Temperature Rise vs Load Current, 18V 24V 2000 2500 3000 8033 G33 LTM8033 T = 25°C, unless otherwise noted. A OUT 36V IN 12V IN 24V IN 500 1000 1500 2000 2500 3000 LOAD CURRENT (mA) 8033 G32 OUT 36V ...
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... V + BIAS is less than 56V. RUN/SS (Pin G8): Pull the RUN/SS pin below 0.2V to shut down the LTM8033. Tie to 2.5V or more for normal operation. If the shutdown feature is not used, tie this pin to the V pin. RUN/SS also provides a soft-start function; ...
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... BLOCK DIAGRAM V IN EMI FILTER FIN RUN/SS SHARE SYNC 8.2μH CURRENT MODE CONTROLLER GND RT PGOOD LTM8033 V OUT 15pF 1μF 499k AUX BIAS ADJ 8033 BD 8033f 9 ...
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... EN55022 class stand alone product. This μModule provides a precisely regulated output voltage program- mable via one external resistor from 0.8V to 25V. The input voltage range is 3.6V to 36V. Given that the LTM8033 is a step-down converter, make sure that the input voltage is high enough to support the desired output voltage and load current ...
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... LTM8033. A ceramic input capacitor combined with trace or cable inductance forms a high Q (under damped) tank circuit. If the LTM8033 circuit is plugged into a live supply, the input voltage can ring to twice its nominal value, possibly exceeding the device’s rating. This situation can be easily avoided ...
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... LTM8033 APPLICATIONS INFORMATION Table 1. Recommended Component Values and Configuration ( OUT IN 3.6V to 36V 0.8V 4.7μF , 50V, 1206 3.6V to 36V 1V 4.7μF , 50V, 1206 3.6V to 36V 1.2V 4.7μF , 50V, 1206 3.6V to 36V 1.5V 4.7μF , 50V, 1206 3.6V to 36V 1.8V 4.7μF , 50V, 1206 4.1V to 36V 2.5V 4.7μF , 50V, 1206 5.3V to 36V 3.3V 4.7μF , 50V, 1206 7 ...
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... For proper operation, it must be powered by at least 2.8V. If the output voltage is programmed to 2.8V or higher, BIAS may be simply tied to V can be tied to V pin voltage is too high, the efficiency of the LTM8033 may R VALUE (kΩ) T suffer. The optimum BIAS voltage is dependent upon many ...
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... Typical Performance Characteristics section. RUN 15k 0.22μF Figure 2. To Soft-Start the LTM8033, Add a Resistor and Capacitor to the RUN/SS Pin 14 Soft-Start The RUN/SS pin can be used to soft-start the LTM8033, reducing the maximum input current during start-up. The RUN/SS pin is driven through an external RC filter to cre- ate a voltage ramp at this pin ...
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... Figure 3. The Input Diode Prevents a Shorted Input from Discharging a Backup Battery Tied to the Output. It Also Protects the Circuit from a Reversed Input. The LTM8033 Runs Only When the Input is Present Shorted Input Protection Care needs to be taken in systems where the output will be held high when the input to the LTM8033 is absent ...
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... Pay attention to the location and density of the thermal vias in Figure 4. The LTM8033 can benefit from the heat sinking afforded by vias that connect to internal GND planes at these locations, due to their proximity to internal power handling components ...
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... LTM8033 is typically only a component, so conducted emissions are not ad- dressed at this level. Thermal Considerations The LTM8033 output current may need to be derated required to operate in a high ambient temperature or deliver a large amount of continuous power. The amount of current derating is dependent upon the input voltage, ...
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... LTM8033. The bulk of the heat flow out of the LTM8033 is through the bottom of the module and the LGA pads into the printed circuit board. Consequently a poor ...
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... Please refer to the PCB Layout section for printed circuit board design suggestions. The LTM8033 is equipped with a thermal shutdown that will inhibit power switching at high junction temperatures. The activation threshold of this function, however, is above 125°C to avoid interfering with normal operation. Thus, ...
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... LTM8033 OUT SHARE AUX RUN/SS BIAS FIN PGOOD 4.7μF RT SYNC GND ADJ 4.7μF 8033 TA05 76.8k 93. 500kHz 8V Step-Down Converter LTM8033 * OUT 4.7μF SHARE AUX RUN/SS BIAS FIN PGOOD 1μF RT SYNC GND ADJ 52.3k 54. 700kHz * RUNNING VOLTAGE RANGE. PLEASE REFER TO THE APPLICATIONS INFORMATION SECTION FOR START-UP DETAILS. ...
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... OPTIONAL SYNCHRONIZATION CLOCK 4.7μF * RUNNING VOLTAGE RANGE. PLEASE REFER TO THE APPLICATIONS INFORMATION SECTION FOR START-UP DETAILS. NOTE: SYNCHRONIZE THE TWO MODULES TO AVOID BEAT FREQUENCIES, IF NECESSARY. OTHERWISE, TIE EACH SYNC TO GND. Current Sharing Two LTM8033 Parts LTM8033 OUT FIN AUX 10μF ...
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... LTM8033 PACKAGE DESCRIPTION PIN NAME PIN NAME OUT OUT OUT A4 GND B4 A5 GND B5 A6 SHARE B6 A7 ADJ B7 PGOOD A8 GND B8 SYNC PIN NAME PIN NAME G1 GND G2 GND G3 AUX G4 BIAS G5 GND H5 G6 GND H6 G7 GND G8 RUN PACKAGE PHOTOGRAPH ...
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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 bbb 4.445 3.175 1.905 0.635 0.635 1.905 3.175 4.445 Z aaa LTM8033 8033f 23 ...
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... PART NUMBER DESCRIPTION LTM8031 Ultralow Noise EMC 1A μModule Regulator LTM8032 Ultralow Noise EMC 2A μModule Regulator 24 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● 3.3V Step-Down Converter LTM8033 OUT SHARE AUX RUN/SS BIAS FIN PGOOD 4.7μF RT SYNC GND ADJ 10μ ...