Datasheet LTM8028 (Analog Devices) - 8

LTM8028
pin FuncTions SYNC (Pin E2):
Frequency Synchronization Pin. This pin
RUN (Pin F1):
The RUN pin acts as an enable pin and allows the switching frequency to be synchronized to an turns off the internal circuitry at 1.55V. The pin does not external clock. The RT resistor should be chosen to oper- have any pull-up or pull-down, requiring a voltage bias for ate the internal clock at 20% slower than the SYNC pulse normal part operation. The RUN pin is internally clamped, frequency. This pin should be grounded when not in use. so it may be pulled up to a voltage source that is higher Do not leave this pin floating. When laying out the board, than the absolute maximum voltage of 6V, provided the avoid noise coupling to or from the SYNC trace. See the pin current does not exceed 100μA. Synchronization section in Applications Information.
block DiagraM
2.2µH BKV VIN VOUT 10Ω 0.2µF 10µF SENSEP 5A LINEAR TEST REGULATOR MARGA PGOOD RUN INPUT-OUTPUT CONTROL SYNC CURRENT I MODE MAX CONTROLLER SS RT V INTERNAL IN POWER GND VOB VO2 VO1 VO0 8028 BD 8028fb 8 For more information www.linear.com/LTM8028 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Package Photo Revision History Typical Application Related Parts