PM8908 datasheet(6/28 Pages) STMICROELECTRONICS

tên linh kiện	PM8908

Giải thích chi tiết về linh kiện	Monolithic buck converter for DDR memory termination

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Pin description and connection diagrams

PM8908

6/28

DocID027688 Rev 3

Pin description and connection diagrams

Figure 4. Pin connection (top view)

Pin description

PM8908

PGND

VIN

PHASE

PGND

VIN

PHASE

Table 2. Pin description

Function

No.

Name

PGND

Power ground connection, connected to the embedded low-side MOSFET

source. Connect to the PGND PCB plane. See Figure 1.

VIN

Power input voltage, connected to the embedded high-side MOS drain.

Supply range is from 1 V to 3.5 V. Bypass VIN pins to PGND pins close to the

IC package with high quality MLCC capacitors. See Figure 1.

6GND

All the internal references are referred to this pin. Connect to the PCB signal

ground.

7REF

Reference output.

Connect a 1

F MLCC capacitor to GND. See Figure 1.

8COMP

Error amplifier output.

Connect with RF - CF to the REF pin for loop compensation. See Figure 1.

9REFIN

Reference input.

Apply a voltage between 0.5 to 2.0 V. Filter with at least 0.01

F MLCC

capacitors to GND.

VOUT

Output voltage sense.

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