Datasheet LTM4630-1 (Analog Devices) - 10

LTM4630-1
SIMPLIFIED BLOCK DIAGRAM
PGOOD1 VIN TRACK1 V 4.5V TO 15V IN SS CAP C C 0.1µF IN1 IN2 22µF 22µF 25V 25V GND V R IN T TEMP = 100µA VIN MTOP1 RT CLKOUT SW1 OR TEMP MONITORS RUN1 0.33µH V VOUT1 OUT1 1.5V MODE_PLLIN + 18A MBOT1 0.22µF COUT1 PHASEMD GND VOUTS1 COMP1 60.4k VFB1 RTH1 10pF RFB1 CTH1 40.2k SGND POWER CONTROL PGOOD2 TRACK2 VIN INTVCC C C SS CAP 0.1µF IN3 IN4 4.7µF 22µF 22µF GND 25V 25V EXTVCC MTOP2 SW2 0.33µH V V OUT2 OUT2 1.2V RUN2 + 18A MBOT2 0.22µF COUT2 GND VOUTS2 60.4k COMP2 + V – FB2 RFB2 10pF 60.4k RTH2 fSET CTH2 INTERNAL RFSET FILTER SGND DIFFOUT DIFFN DIFFP 46301 BD
Figure 1. Simplified LTM4630-1 Block Diagram DECOUPLING REQUIREMENTS TA = 25°C. Use Figure 1 configuration. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
External Input Capacitor Requirement CIN1, CIN2 (VIN1 = 4.5V to 15V, VOUT1 = 1.5V) IOUT1 = 18A 44 µF CIN3, CIN4 (VIN2 = 4.5V to 15V, VOUT2 = 1.2V) IOUT2 = 18A 44 µF External Output Capacitor Requirement COUT1 (VIN1 = 4.5V to 15V, VOUT1 = 1.5V) IOUT1 = 18A 400 µF COUT2 (VIN2 = 4.5V to 15V, VOUT2 = 1.2V) IOUT2 = 18A 400 µF 46301fa 10 For more information www.linear.com/LTM4630-1 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Applications Information Package Description Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Output Total DC Accuracy and AC Transient Performance Applications Information Typical Applications Package Description Revision History Package Photo Design Resources Related Parts