DC1297B Linear Technology, DC1297B Datasheet
DC1297B
Specifications of DC1297B
Related parts for DC1297B
DC1297B Summary of contents
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... The LTM4612 is Pb-free and RoHS compliant. L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase and µModule are registered trademarks and LTpowerCAD is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...
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LTM4612 absoluTe MaxiMuM raTings (Note 1) INTV DRV ............................................. –0. CC ........................................................... –0.3V to 16V OUT PLLIN, FCB, TRACK/SS, MPGM, MARG0, MARG1, PGOOD ....................–0.3V to INTV RUN ............................................................. –0. COMP ................................................ –0.3V ...
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T Application (front page) configuration. SYMBOL PARAMETER I Input Supply Bias Current Q(VIN) I Input Supply Current S(VIN) V Internal V Voltage INTVCC CC Output Specifications I Output Continuous Current Range ...
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LTM4612 elecTrical characTerisTics operating temperature range, otherwise specifications are at T Application (front page) configuration. SYMBOL PARAMETER I Current into DRV Pin DRVCC CC R Resistor Between V and V FBHI OUT V Margin Reference Voltage MPGM ...
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Typical perForMance characTerisTics Efficiency vs Load Current with 3.3V (FCB = 0) OUT 100 3.3V IN OUT 60 12V 3.3V IN OUT 24V 3. OUT 36V 3.3V IN OUT 50 ...
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LTM4612 Typical perForMance characTerisTics Start-Up with 24V to 12V at IN OUT –55°C OUT A V OUT 5V/DIV I IN 1A/DIV 500µs/DIV 4612 G10 SOFT-START CAPACITOR: 3.9nF × 10µF CERAMIC CAPACITORS AND ...
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FuncTions (See Package Description for Pin Assignments) V (Bank 1): Power Input Pins. Apply input voltage be- IN tween these pins and PGND pins. Recommend placing input decoupling capacitance directly between V and PGND pins. PGND (Bank 2): Power ...
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LTM4612 pin FuncTions V (Pin F12): The Negative Input of the Error Ampli- FB fier. Internally, this pin is connected to V 0.5% precision resistor. Different output voltages can be programmed with an additional resistor between the V and SGND ...
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DiagraM > 1. < OFF V OUT MAX = 5V RUN PGOOD COMP INTERNAL COMP SGND MARG1 MARG0 SET FB 5.23k 93.1k FCB 10k MPGM TRACK/SS PLLIN C SS 4.7µF INTV ...
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LTM4612 operaTion Power Module Description The LTM4612 is a standalone nonisolated switching mode DC/DC power supply. It can deliver output current with some external input and output capacitors. This module provides precisely regulated output voltage programmable via ...
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Output Voltage Programming and Margining The PWM controller has an internal 0.6V reference voltage. As shown in the Block Diagram, a 100k internal feedback resistor connects the V and V pins together. Adding a OUT FB resistor, R ...
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LTM4612 applicaTions inForMaTion Operating Frequency The operating frequency of the LTM4612 is optimized to achieve the compact package size and the minimum output ripple voltage while still providing high efficiency. As shown in Figure 2, the frequency is linearly increased ...
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Input Capacitors LTM4612 is designed to achieve the low input radiated EMI noise due to the fast switching of turn-on and turn-off. In the LTM4612, a high-frequency inductor is integrated into the input line for noise attenuation. V ...
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LTM4612 applicaTions inForMaTion 1.00 0.95 0.90 0.85 0.80 0.75 0.70 0.65 0.60 0.55 0.50 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 0.1 0.15 0.2 0.25 Figure 5. Normalized Output Ripple Current vs Duty Cycle, Dlr = V ...
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Fault Conditions: Current Limit and Overcurrent Foldback LTM4612 has a current mode controller, which inherently limits the cycle-by-cycle inductor current not only in steady state operation, but also in transient. To further limit current in the event of ...
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... ages. LTpowerCAD™ from Linear Technology is available for more control loop optimization. FCB Pin The FCB pin determines whether the bottom MOSFET re- mains on when current reverses in the inductor. Tying this pin above its 0.6V threshold enables discontinuous operation where the bottom MOSFET turns off when inductor current reverses ...
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Parallel Operation The LTM4612 device is an inherently current mode con- trolled device. This allows the paralleled modules to have very good current sharing and balanced thermal on the design. Figure 21 shows a schematic of the parallel ...
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LTM4612 applicaTions inForMaTion 6 5 36V TO 15V IN OUT 4 3 24V TO 12V IN OUT LOAD CURRENT (A) 4612 F09 Figure 9. Power Loss at 12V and 15V OUT OUT ...
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Table 3. 12V and 15V Outputs DERATING CURVE V (V) IN Figures 11, 13, 15 24, 36 Figures 11, 13, 15 24, 36 Figures 11, 13, 15 24, 36 Figures 12, 14, 16 24, 36 Figures 12, 14, ...
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LTM4612 applicaTions inForMaTion Safety Considerations The LTM4612 modules do not provide isolation from There is no internal fuse. If required, a slow blow OUT fuse with a rating twice the maximum input current needs to be ...
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PULL-UP SUPPLY ≤ 22V TO 36V R4 R5 100k 10µF 50V CERAMIC PULL-UP SUPPLY ≤ 36V C IN 10µF 50V CERAMIC EXTERNAL 5V SUPPLY IMPROVES EFFICIENCY— ESPECIALLY ...
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LTM4612 applicaTions inForMaTion PULL-UP SUPPLY ≤ 26V TO 36V R4 100k R fSET 806k 10µF 50V CERAMIC Figure 20. 26V to 36V V IN 20V TO 36V C2 10µF 50V + C5 100µF 2-PHASE ...
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V IN 22V TO 36V + 2-PHASE OSCILLATOR + V OUT1 GND OUT2 R5 C11 118k 0.1µF SET MOD LTC6908-1 PULL-UP SUPPLY ≤ 10µF 50V PLLIN 100k 100k D IN PGOOD V ...
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LTM4612 applicaTions inForMaTion 36V + 2-PHASE OSCILLATOR + V OUT1 GND OUT2 C11 R5 0.1µF 200k SET MOD LTC6908-1 Figure 23. 2-Phase, 5V and 3. Design with 500kHz Frequency 10µF 50V ...
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DescripTion PIN NAME ...
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LTM4612 package DescripTion bbb 6.9850 5.7150 4.4450 3.1750 1.9050 0.6350 0.0000 0.6350 1.9050 3.1750 4.4450 5.7150 6.9850 4612fb ...
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... Changes to Figures 17, 19, 21, 22. Changes to the Related Parts. 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. LTM4612 ...
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... LGA Package OUT ≤ 36V; 9mm × 11.25mm × 2.8mm LGA Package IN ≤ 5V, 15mm × 15mm × 4.3mm LGA Package OUT ≤ 5V, Synchronizable, OUT ≤ 24V, Synchronizable, OUT LT 0511 REV B • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2008 4612fb ...