LTM4615 datasheet(8/32 Pages) LINER

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LTM4639

4639f

For more information www.linear.com/LTM4639

PIN FUNCTIONS

EXTVCC (E12): External power input to an internal control

switchallowsanexternalsourcegreaterthan4.7V,butless

than 6V to supply IC power and bypass the internal INTVCC

LDO. EXTVCC must be less than VIN at all times during

power-on and power-off sequences. See the Applications

Informationsection.5Voutputapplicationcanconnectthe

5V output to this pin to improve efficiency. The 5V output

is connected to EXTVCC in the 5V derating curves.

VOUT_LCL (L12): This pin connects to VOUT through a 1M

resistor,andtoVFBwitha60.4kresistor.Theremotesense

amplifier output DIFF_OUT is connected to VOUT_LCL, and

drives the 60.4k top feedback resistor in remote sensing

applications. When the remote sense amplifier is used,

DIFF_OUT effectively eliminates the 1MΩ from VOUT to

VOUT_LCL. When the remote sense amplifier is not used,

then connect VOUT_LCL to VOUT directly.

VOSNS+ (J12): (+) Input to the Remote Sense Amplifier.

This pin connects to the output remote sense point. The

remote sense amplifier can be used for VOUT ≤ 3.3V.

Connect to ground when not used.

VOSNS– (M12): (–) Input to the Remote Sense Amplifier.

This pin connects to the ground remote sense point. The

remote sense amplifier can be used for VOUT ≤ 3.3V.

Connect to ground when not used.

DIFF_OUT (K12): Output of the Remote Sense Amplifier.

This pin connects to the VOUT_LCL pin for remote sense

applications. Otherwise float when not used. The remote

sense amplifier can be used for VOUT ≤ 3.3V.

MTP1, MTP2, MTP3, MTP4, MTP5, MTP6, MTP7, (A12,

B11,C10,C11,C12,D10,D11,D12):Extramountingpads

usedforincreasedsolderintegritystrength.Leavefloating.

LTM4615 Datasheet(PDF) 8 Page - Linear Technology