Data Sheet

LTM4640

analog.com

Rev. 0

36 of 38

ORDERING GUIDE

Table 14.Ordering Guide

MODEL

TEMPERATURE

RANGE 1

PACKAGE

DESCRIPTION*

PACKAGE OPTION

LTM4640EY#PBF

–40°C to 125°C Part marking: 4640,

SAC305 (RoHS) ball

finish, e1 finish code,

moisture sensitivity

level (MSL 4) rated

device.

49-Pin, 6.25mm × 6.25mm × 5.07mm, BGA

package.

LTM4640IY#PBF

–40°C to 125°C Part marking: 4640,

SAC305 (RoHS) ball

finish, e1 finish code,

moisture sensitivity

level (MSL 4) rated

device.

49-Pin, 6.25mm × 6.25mm × 5.07mm, BGA

package.

1

The LTM4640, including E-grade and I-grade parts (see Table 14), is tested under pulsed load conditions such

that TJ ≈ TA. The LTM4640E is guaranteed to meet performance specifications over the 0°C to 125°C internal

operating temperature range. Specifications over the –40°C to 125°C internal operating temperature range are

assured by design, characterization, and correlation with statistical process controls. The LTM4640I is

guaranteed to meet specifications over the full –40°C to 125°C internal operating temperature range. Note

that the maximum ambient temperature consistent with these specifications is determined by specific

operating conditions in conjunction with board layout, the rated package thermal resistance, and other

environmental factors.

Contact the factory for parts specified with wider operating temperature ranges. *Ball finish code is per IPC/JEDEC

J-STD-609. The temperature grade is identified by a label on the shipping container.

Recommended LGA and BGA PCB assembly and manufacturing procedures.

LGA and BGA package and tray drawings.

Table 15. Evaluation Boards

PART NUMBER

DESCRIPTION

DC3107A

20VIN, 20A Step-Down DC-to-DC µModule Regulator evaluation (demo) board.