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LTM4650 Datasheet(PDF) 10 Page - Linear Technology |
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LTM4650 Datasheet(HTML) 10 Page - Linear Technology |
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10 / 34 page  LTM4650 10 4650fb For more information www.linear.com/LTM4650 SIMPLIFIED BLOCK DIAGRAM DECOUPLING REQUIREMENTS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS CIN1, CIN2 External Input Capacitor Requirement (VIN1 = 4.5V to 15V, VOUT1 = 1.5V) (VIN2 = 4.5V to 15V, VOUT2 = 1.0V) IOUT1 = 25A IOUT2 = 25A 44 44 66 66 µF µF COUT1 COUT2 External Output Capacitor Requirement (VIN1 = 4.5V to 15V, VOUT1 = 1.5V) (VIN2 = 4.5V to 15V, VOUT2 = 1.0V) IOUT1 = 25A IOUT2 = 25A 600 600 800 800 µF µF TA = 25°C. Use Figure 1 configuration. Figure 1. Simplified LTM4650 Block Diagram 4650 F01 TEMP CLKOUT RUN1 MODE_PLLIN PHASEMD TRACK1 = 100µA OR TEMP MONITORS 4.7µF 0.22µF SS CAP 1F CIN1 22µF 25V ×3 VIN VIN RFB2 60.4k MTOP1 MBOT1 POWER CONTROL 0.22µF 0.12µH 60.4k COUT1 RFB1 40.2k + VOUT1 1.5V 25A VOUT2 1.2V 25A VFB1 GND GND VIN 4.5V TO 15V GND GND SW2 SW1 PGOOD2 PGOOD1 INTERNAL COMP INTERNAL COMP INTERNAL FILTER 1F CIN2 22µF 25V ×3 MTOP2 MBOT2 0.22µF 0.12µH COUT2 + + – 60.4k VOUT1 VOUT2 VFB2 VOUTS2 VOUTS1 RFSET VIN RT VIN RT SS CAP DIFFOUT DIFFN DIFFP COMP1 SGND TRACK2 INTVCC EXTVCC RUN2 COMP2 fSET SGND |
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