LTM4601 LINER [Linear Technology], LTM4601 Datasheet
LTM4601
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LTM4601 Summary of contents
Page 1
... MOSFETs, inductor and all support components. The µModule ×15mm × 2.8mm LGA package. Operating over an input voltage range of 4.5 to 20V, the LTM4601 supports an output voltage range of 0. well as output voltage tracking and margining. The high effi ciency design delivers 12A continuous current (14A peak). Only bulk input and output capacitors are needed to complete the design. The low profi ...
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... OSNS LGA PACKAGE 118-LEAD (15mm 15mm 2.8mm) = 125°C, θ = 15°C/W, θ 6°C/W, JMAX JA JC θ DERIVED FROM 95mm × 76mm PCB WITH 4 LAYERS JA WEIGHT = 1.7g *LTM4601-1 ONLY LGA PART MARKING* LTM4601V LTM4601V LTM4601V-1 LTM4601V-1 MIN TYP MAX ● 4.5 ● 1.478 1.5 1.522 ● ...
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... Peak Deviation for Dynamic Load OUTLS t Settling Time for Dynamic Load Step Load 50 Full Load SETTLE I Output Current Limit OUTPK Remote Sense Amp (Note 3) (LTM4601 Only, Not Supported in the LTM4601-1) + – Common Mode Input Voltage Range V OSNS OSNS ...
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... FB V Returning FB Note 2: The LTM4601E/LTM4601E-1 are guaranteed to meet performance specifi cations from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. The LTM4601I/LTM4601I-1 are guaranteed and tested over the –40°C to 85°C temperature range. ...
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... AT 6A/ s LOAD STEP µ • 6.3V CERAMICS OUT µ 470 F 4V SANYO POSCAP C3 = 100pF V 50mV/DIV I 5A/DIV µ s/DIV 4601 G07 LTM4601/LTM4601-1 (See Figure 18 for all curves) Effi ciency vs Load Current with 20V IN 100 OUTPUT CURRENT (A) 4601 G02 1 ...
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... LTM4601/LTM4601 TYPICAL PERFOR A CE CHARACTERISTICS Start-Up OUT V OUT 0.5V/DIV I IN 0.5A/DIV 5ms/DIV V = 12V 1.5V OUT C = 470µF OUT 3 × 22µF SOFT-START = 10nF Step-Down Ratio IN OUT 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0 INPUT VOLTAGE (V) Short-Circuit Protection OUT 0.5V/DIV I IN 1A/DIV 50µ ...
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... M12): (–) Input to the Remote Sense Amplifi er. OSNS This pin connects to the ground remote sense point. The remote sense amplifi used for V NC1 (Pin M12): No Connect On the LTM4601- (Pin J12): (+) Input to the Remote Sense Amplifi er. ...
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... C SS INTV CC DRV CC Figure 1. Simplifi ed LTM4601/LTM4601-1 Block Diagram 8 PGOOD (Pin G12): Output Voltage Power Good Indicator. Open-drain logic output that is pulled to ground when the output voltage is not within ±10% of the regulation point, after a 25µs power bad mask timer expires. ...
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... Schottky diodes. The typical switching frequency is 850kHz at full load. With current mode control and internal feedback loop compensation, the LTM4601 module has suffi cient stability margins and good transient performance under a wide range of operat- ing conditions and with a wide range of output capacitors, even all ceramic output capacitors ...
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... HIGH from SET Input Capacitors LTM4601 module should be connected to a low AC imped- ance DC source. Input capacitors are required to be placed adjacent to the module. In Figure 18, the 10µF ceramic input capacitors are selected for their ability to handle the large RMS current into the converter. An input bulk 19 ...
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... D Output Capacitors The LTM4601 is designed for low output voltage ripple. The bulk output capacitors defi ned as C with low enough effective series resistance (ESR) to meet the output voltage ripple and transient requirements. C can be a low ESR tantalum capacitor, a low ESR polymer capacitor or a ceramic capacitor. The typical capacitance is 200µ ...
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... For example, each LTM4601’s inductor current of a 12V to 2.5V multi- phase design can be read from the Inductor Ripple Current verses Duty Cycle graph (Figure 3). The large ripple current ...
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... To further limit current in the event of an overload condi- tion, the LTM4601 provides foldback current limiting. If the output voltage falls by more than 50%, then the maximum output current is progressively lowered to about one sixth of its full current limit value ...
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... Figure 19 shows an LTM4601 and an LTM4601-1 used in a parallel design. The 2nd LTM4601 device does not require the remote sense amplifi er, therefore, the LTM4601-1 de- vice is used. An LTM4601 device can be used without the diff amp tied to INTV LTM4601-1 devices in parallel with an LTM4601, limit the number to fi ...
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... IN OUT 5V , 1.5V 400LFM IN OUT AMBIENT TEMPERATURE (°C) Figure 9. No Heat Sink 4601 F07 90 100 4600 F09 IN LTM4601/LTM4601 20V LOSS 3 12V LOSS OUTPUT CURRENT (A) 4601 F08 Figure 8. 3.3V Power Loss ...
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... LTM4601/LTM4601 APPLICATIO S I FOR ATIO 1.5V 0LFM 2 IN OUT 5V , 1.5V 200LFM IN OUT 5V , 1.5V 400LFM IN OUT AMBIENT TEMPERATURE (°C) Figure 11. No Heat Sink 12V 0LFM 2 200LFM 400LFM AMBIENT TEMPERATURE (°C) Figure 13. 12V , 3. Heat Sink IN OUT ...
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... NONE 150pF 12 330µF 6.3V NONE 100pF 12 NONE NONE 100pF 12 NONE NONE 22pF 15 NONE NONE 22pF 20 LTM4601/LTM4601-1 PART NUMBER 6TPE330MIL (330µF, 6.3V) 2R5TPE470M9 (470µF, 2.5V) 4TPE470MCL (470µF, 4V) DROOP PEAK TO RECOVERY LOAD STEP (mV) PEAK (mV) TIME (µs) (A/µs) 70 140 ...
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... LTM4601/LTM4601 APPLICATIO S I FOR ATIO Table 3. 1.5V Output at 12A DERATING CURVE V (V) IN Figures Figures Figures Figures 10 Figures 10 Figures 10 Table 4. 3.3V Output at 12A DERATING CURVE V (V) IN Figure 13 12 Figure 13 12 Figure 13 ...
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... Layout Checklist/Example The high integration of LTM4601 makes the PCB board layout very simple and easy. However, to optimize its electri- cal and thermal performance, some layout considerations are still necessary. ...
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... LTM4601/LTM4601 APPLICATIO S I FOR ATIO Frequency Adjustment The LTM4601 is designed to typically operate at 850kHz across most input conditions. The f open or decoupled with an optional 1000pF capacitor. The switching frequency has been optimized for maintaining constant output ripple noise over most operating ranges. ...
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... CC OUT_LCL DRV NC3 CC NC1 NC2 f SGND PGND SET R fSET 100k MARGIN CONTROL SOT-323 DUAL LTM4601/LTM4601 lower the OUT SET current out of the f pin to 24µA. The fSET SET = 3.3V, therefore 130k OUT node and lower the I SET DERATING CURVE V OUT 5V C3 ...
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... CLOCK SYNC C5 0.01µF R4 REVIEW TEMPERATURE V PLLIN TRACK/SS 100k DERATING CURVE IN PGOOD V OUT C3 100pF MPGM V FB RUN MARG0 MARGIN ON/OFF CONTROL COMP MARG1 LTM4601 INTV V CC OUT_LCL DRV DIFFV CC OUT + R1 V OSNS 392k – V OSNS f SGND PGND SET Figure 18. Typical 4.5V-20V , 1.5V at 12A Design IN V ...
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... V PLLIN IN PGOOD PGOOD MPGM C8 RUN 10µF COMP 25V LTM4601-1 ×2 INTV CC DRV CC 392k SGND PGND Figure 19. 2-Phase Parallel, 1.5V at 24A Design LTM4601/LTM4601 0.6V OUT CLOCK SYNC 0° PHASE N = NUMBER OF PHASES TRACK/SS CONTROL TRACK/SS V OUT C6 220pF 22µF MARG0 6.3V MARG1 C4 V 470µF ...
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... LTM4601/LTM4601-1 U TYPICAL APPLICATIO S 24 4601f ...
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... PACKAGE DESCRIPTIO 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 bbb LTM4601/LTM4601-1 25 4601f ...
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... LTM4601/LTM4601-1 PACKAGE DESCRIPTIO PIN NAME INTV CC A8 PLLIN A9 TRACK/SS B9 A10 RUN A11 COMP A12 MPGM PIN NAME G1 PGND G2 PGND G3 PGND G4 PGND G5 PGND G6 PGND G7 PGND G8 PGND G9 PGND G10 - G11 - G12 PGOOD 26 U Pin Assignment Tables ...
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... M4 V OUT PGND M5 V OUT PGND M6 V OUT PGND M7 V OUT PGND M8 V OUT PGND M9 V OUT M10 V OUT M11 V OUT LTM4601/LTM4601-1 PIN NAME PIN NAME A7 INTVCC PLLIN TRACK/ A10 RUN B10 - A11 COMP B11 - A12 MPGM C7 - B12 f C8 ...
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... Basic 10A DC/DC µModule Synchronizable, PolyPhase Operation to 48A, LTM4601-1 Version has no Remote Sensing Pin Compatible with the LTM4600 Synchronizable, PolyPhase Operation to 48A, LTM4601-1 Version has no Remote Sensing, Pin Compatible with the LTM4601 This product contains technology licensed from Silicon Semiconductor Corporation. ● ...