Datasheet LTM4601A, LTM4601A-1 (Analog Devices) - 9

LTM4601A/LTM4601A-1
SIMPLIFIED BLOCK DIAGRAM
VIN VOUT_LCL VOUT R1 >1.9V = ON 1M <1V = OFF (50Ω, LTM4601A-1) MAX = 5V RUN UVLO VIN FUNCTION PGOOD + 5.1V 4.5V TO 20V 1.5µF ZENER CIN COMP R2 60.4k INTERNAL COMP Q1 POWER CONTROL SGND 0.47µH VOUT MARG1 1.5V 12A MARG0 22µF VFB 50k 50k + f R SET SET Q2 COUT 40.2k 39.2k PGND MPGM INTV TRACK/SS 10k CC PLLIN C – SS 10k – VOSNS NOT INCLUDED 50k 10k IN THE LTM4601A-1 4.7µF + V + OSNS V – OSNS = NC1 INTV + CC V = NC2 10k OSNS DIFFVOUT = NC3 DRVCC DIFFVOUT 4601A F01
Figure 1. Simplified LTM4601A/LTM4601A-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 = 12A 20 30 µF (VIN = 4.5V to 20V, VOUT = 1.5V) COUT External Output Capacitor Requirement IOUT = 12A 100 200 µF (VIN = 4.5V to 20V, VOUT = 1.5V) 4601afe For more information www.linear.com/LTM4601A 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Revision History Package Photos Related Parts