MP2214 – 16V, 4A, 600kHz SYNCHRONOUS STEP-DOWN CONVERTER

MP2214 Rev. 0.9

www.MonolithicPower.com

4

9/1/2010

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PIN FUNCTIONS

8-SOICE

Pin #

14-QFN

Pin #

Name

Description

5

8

VCC

Bias Supply. This supplies power to both the internal control circuit and the

gate drivers. A decoupling capacitor to ground is required close to this pin.

3

5, 10

IN

Input Supply. This supplies power to the high side switch. A decoupling

capacitor to ground is required close to this pin to reduce switching spikes.

6，7

4, 11

SW

Switch Node Connection to the Inductor. These pins connect to the internal

high and low-side power MOSFET switches. All SW pins must be

connected together externally.

2

1, 3, 12

PGND,

AGND,

Exposed

Pad

Ground. Connect these pins with larger copper areas to the negative

terminals of the input and output capacitors. Connect exposed pad to GND

plane for proper thermal performance.

4

7

BS

Bootstrap. A capacitor between this pin and SW provides a floating supply

for the high-side gate driver.

1

14

FB

Feedback. This is the input to the error amplifier. An external resistive

divider connected between the output and GND is compared to the internal

0.8V reference to set the regulation voltage.

8

13

EN/SYNC

Enable and Frequency Synchronization Input Pin. Forcing this pin below

0.4V shuts down the part. Forcing this pin above 1.6V turns on the part.

Applying a 500kHz to 2MHz clock signal to this pin synchronizes the

internal oscillator frequency to the external source.

9

POK

Power Good Pin.

2, 6

N/C

No Connect.