Datasheet LTM4620 (Analog Devices) - 10

LTM4620
SIMPLIFIED BLOCK DIAGRAM
PGOOD1 TRACK1 VIN SS CAP C C 1µF IN1 IN2 22µF 22µF 25V 25V GND V R IN T TEMP = 100µA VIN MTOP1 RT CLKOUT SW1 RUN1 0.33µH VOUT1 VOUT1 MODE_PLLIN + 1.5V/13A MBOT1 2.2µF COUT1 PHASMD GND VOUTS1 COMP1 60.4k VFB1 INTERNAL RFB1 COMP 40.2k SGND POWER CONTROL PGOOD2 TRACK2 VIN INTVCC C C SS CAP 1µF IN3 IN4 4.7µF 22µF 22µF GND 25V 25V EXTVCC MTOP2 SW2 0.33µH VOUT2 VOUT2 1.2V/13A RUN2 + MBOT2 2.2µF COUT2 GND VOUTS2 60.4k COMP2 + V – FB2 RFB2 INTERNAL 60.4k COMP fSET RfSET INTERNAL 121k FILTER SGND DIFFOUT DIFFN DIFFP 4620 BD
Figure 1. Simplified LTM4620 Block Diagram DECOUPLING REQUIREMENTS TA = 25°C. Use Figure 1 configuration. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
External Input Capacitor Requirement CIN1, CIN2 (VIN = 4.5V to 16V, VOUT1 = 1.5V) IOUT1 = 13A 22 µF CIN3, CIN4 (VIN = 4.5V to 16V, VOUT2 = 1.2V) IOUT2 = 13A (Note 8) 22 µF External Output Capacitor Requirement COUT1 (VIN = 4.5V to 16V, VOUT1 = 1.5V) IOUT1 = 13A 300 µF COUT2 (VIN = 4.5V to 16V, VOUT2 = 1.2V) IOUT2 = 13A (Note 8) 300 µF 4620fc 10 For more information www.linear.com/LTM4620 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photo Related Parts