LTM4639
Low VIN 20A DC/DC
µModule Step-Down Regulator
DESCRIPTION FEATURES Complete 20A Switch Mode Power Supply
n 2.375V to 7V Input Voltage Range (V < 4.5V,
IN
Need CPWR Bias)
n 0.6V to 5.5V Output Voltage Range
n ±1.5% Maximum Total DC Output Voltage Error
(–40°C to 125°C)
n Differential Remote Sense Amplifier for Precision
Regulation (VOUT ≤ 3.3V)
n Current Mode Control/Fast Transient Response
n Parallel Multiphase Current Sharing (Up to 80A)
n Frequency Synchronizatio Selectable Pulse-Skipping or Burst Mode® Operatio Soft-Start/Voltage Tracking
n Up to 88% Efficiency (3.3V , 1.5V
IN
OUT)
n Overcurrent Foldback Protectio Output Overvoltage Protectio Internal Temperature Monitor
n Overtemperature Protectio 15mm × 15mm × 4.92mm BGA Package The LTM®4639 is a complete 20A output high efficiency
switch mode step-down DC/DC µModule (micromodule)
regulator. Included in the package are the switching
controller, power FETs, inductor and compensation …