LTM4643 datasheet(8/30 Pages) AD

8 / 30 page

LTM4638

Rev. C

For more information www.analog.com

RUN (B4): Run Control Input Pin. Enable regulator opera-

tion by tying the specific RUN pin above 1.25V. Tying it

below 1.1V shuts down the specific regulator channel.

TSENSE+ (A6): Temperature Monitor Pin. An internal diode

connected NPN transistor is placed between TSENSE+ and

TSENSE– pins. See the Applications Information section.

GND (B2, B6, C3-C7, D5-D7, E5-E7, F5-F7, G6-G7):

Power Ground Pins for Both Input and Output Returns.

Use large PCB copper areas to connect all GND together.

PIN FUNCTIONS

PGOOD (B5): Output Power Good Pin with Open-Drain

Logic. PGOOD is pulled to ground when the voltage on

the FB pin is not within ±8% of the internal 0.6V reference.

TSENSE–(A7):LowSideoftheInternalTemperatureMonitor.

SW (B7): Switching node of each channel that is used

for testing purposes. Also an R-C snubber network can

be applied to reduce or eliminate switch node ringing, or

otherwise leave floating. See the Applications Information

section.

LTM4643 데이터시트(PDF) 8 Page - Analog Devices