LTM4702 datasheet(8/38 Pages) AD

8 / 38 page

Data Sheet

LTM4640

analog.com

Rev. 0

8 of 38

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

Figure 3. Pinout Configuration

Pin Descriptions

Table 4. Pin Descriptions

BGA PACKAGE

49-PIN (6.25mm × 6.25mm × 5.07mm)

TJMAX = 125°C, θJCtop = 10.1°C/W, θJCbottom = 3.9°C/W, θJA = 16°C/W

TOP VIEW

θ VALUES ARE DETERMINED BY SIMULATION PER JESD51 CONDITIONS,

WEIGHT 660mg.

θJA VALUE IS OBTAINED WITH DEMO BOARD.

SEE THE APPLICATIONS INFORMATION SECTION FOR LAB MEASUREMENT

AND DERATING INFORMATION.

VOUT

VIN

PHMODE

GND

TSENSE–

TSENSE+

CLKOUT

COMPb

FREQ

VOSNS

–

MODE/CLKIN

TRACK/SS

VOSNS+

INTVCC

RUN

PGOOD

COMPa

VOUT

NAME

DESCRIPTION

CFG 1

A1–A5, F3,

G1–G3

VOUT

Power Output Pins of the Switching Mode Regulator. Apply output load between

these pins and GND. Recommend placing output decoupling capacitance directly

between these pins and the GND. See the Applications Information section for

paralleling outputs.

TSENSE+

Temperature Monitor Pin. An internal diode-connected NPN transistor is placed

between TSENSE+ and TSENSE– pins. See the Applications Information section

for details.

TSENSE–

Low-Side of the Internal Temperature Monitor.

VOSNS+

Positive Input to the Differential Remote Sense Amplifier. Internally, this pin is

connected to the FB pin with a 10kΩ ±0.5% precision resistor. See the Applications

Information section for details.

B2, B6, C3–

C7, D5–D7,

E5–E7, F5–

F7, G6–G7

GND

Power Ground Pins for Both Input and Output Returns. Use large PCB copper areas to

connect the GND pins together.

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