Datasheet LTM4619 (Analog Devices) - 7

LTM4619
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INTERNAL VIN FILTER + 4.5V TO 26.5V* 1.5µF CIN INTVCC M1 PGOOD PGND SW1 MODE/PLLIN VOUT1 EXTV 2.5V/4A CC L1 + M2 V 1.5µH 10µF IN TK/SS1 COUT1 C PGND SS1 R1 RUN1 60.4k COMP1 R2 VFB1 INTERNAL R  R2  POWER SET1 COMP 28k CONTROL 1.5µF  R1+R2  • VIN TK/SS2 = UVLO THRESHOLD = 1.22V M3 PGND CSS2 SW2 RUN2 VOUT2 COMP2 L2 + 3.3V/4A M4 1.5µH 10µF COUT2 INTERNAL PGND COMP 60.4k FREQ VFB2 INTERNAL R FILTER SET2 SGND 19.1k 4619 BD *USE EXTVCC FOR VIN ≤ 5.5V, OR TIE VIN AND EXTVCC TOGETHER FOR VIN ≤ 5.5V
Figure 1. Simplified LTM4619 Block Diagram Decoupling requireMenTs TA = 25°C. Use Figure 1 configuration. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
External Input Capacitor Requirement CIN (VIN = 4.5V to 26.5V, VOUT1 = 2.5V, VOUT2 = 3.3V) IOUT1 = 4A, IOUT2 = 4A 10 µF External Output Capacitor Requirement COUT1 (VIN = 4.5V to 26.5V, VOUT1 = 2.5V, VOUT2 = 3.3V) IOUT1 = 4A 200 µF COUT2 IOUT2 = 4A 200 µF 4619fc For more information www.linear.com/LTM4619 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Revision History Package Photograph Related Parts Design Resources