Datasheet LTM4603, LTM4603-1 (Analog Devices) - 9

LTM4603/LTM4603-1
siMpliFieD block DiagraM
VOUT_LCL VIN VOUT >1.9V = ON 1M R1 <1V = OFF (50Ω, LTM4603-1) UVLO MAX = 5V RUN VIN FUNCTION PGOOD + 5.1V 4.5V TO 20V R2 1.5µF ZENER CIN COMP 60.4k INTERNAL COMP POWER CONTROL SGND Q1 1µH VOUT MARG1 1.5V 6A MARG0 22µF VFB 50k 50k + f R SET SET Q2 COUT 40.2k 33.2k PGND MPGM INTVCC TRACK/SS 10k PLLIN CSS 10k – V – OSNS NOT INCLUDED IN THE LTM4603-1 4.7µF 50k 10k + V + OSNS VOSNS– = NC1 INTV V CC OSNS+ = NC2 10k DIFFVOUT = NC3 DRVCC DIFFVOUT 4603 F01
Figure 1. Simplified LTM4603/LTM4603-1 Block Diagram Decoupling requireMents TA = 25°C, VIN = 12V. Use Figure 1 configuration. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
CIN External Input Capacitor Requirement IOUT = 6A 20 µF (VIN = 4.5V to 20V, VOUT = 1.5V) COUT External Output Capacitor Requirement IOUT = 6A 100 200 µF (VIN = 4.5V to 20V, VOUT = 1.5V) 4603fb 9 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 Application Package Description Revision History Typical Application Package Photograph Related Parts