The LTM®4634 integrates three complete 5A/5A/4A high
efficiency switching mode DC/DC converters into one small
package. Switching controllers, power FETs, inductors, and
most support components are included. Operating over an
input voltage range of 4.75V to 28V, the LTM4634 provides
three independent output voltages. VOUT1 and VOUT2 are
adjustable from 0.8V to 5.5V, while VOUT3 is adjustable
from 0.8V to 13.5V. Each output voltage is set by a single
external resistor.
High switching frequency and a current mode architecture
enable a very fast transient response to line and load
changes without sacrificing stability. The device supports
frequency synchronization, multiphase parallel operation, soft-start and output voltage tracking for supply rail
sequencing.
Fault protection features include overvoltage protection,
overcurrent protection and temperature monitoring. The
power module is offered in a space saving, thermally
enhanced 15mm × 15mm × 5.01mm BGA package. The
LTM4634 is available with SnPb (BGA) or RoHS compliant
terminal finish.
