MP5600-COMPACT MULTIPLE-OUTPUT POWER SUPPLY FOR TV-LCD PANEL

MP5600 Rev. 0.9

www.MonolithicPower.com

9

10/19/2009

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© 2009 MPS. All Rights Reserved.

Pin #

Name

Description

18

BST

Buck Regulator Bootstrap Pin. Connect a capacitor between this pin and SWBK to form a

floating supply to drive the internal MOSFET. 0.1µF is recommended for most application.

19.20

SWBK

Buck Regulator Switching Output. SWBK is the source of the internal N-channel MOSFET.

Connect the inductor and schottky diode to SWBK pin.

21

VBK

Buck Regulator Output Pin. Connect buck regulator output to this pin.

22,23

IN1,IN2

Buck Regulator Power Input Pin. Drain of the internal N-channel MOSFET.

24

IN3

Input Pin for powering internal 5V regulator and logic circuitry. Bypass this pin to GND with a

capacitor. A 0.22µF is enough for most application.

25

FSEL

Switching Frequency Select Pin. If FSEL is connected to GND, the switching frequency is

set to 450kHz, if FSEL is connected to VCC, the switching frequency is set to 675kHz.

26

EN1

Buck and Negative Charge Pump Regulator Enable Pin. High level enables buck regulator,

Low level disables buck regulator.

27

DLY2

Positive Charge Pump Delay Pin. Connect a capacitor from DLY2 and GND to set the delay

time between the boost startup and the startup of positive charge pump regulator.

28

VCC

5V Internal Regulator Output Pin. Bypass VCC to GND with 1μF ceramic capacitor. It

provides power for the internal reference, logic and driving circuit.

29

EN2

Boost and Positive Charge Pump Regulator Enable Pin. High level enables boost regulator,

Low level disables boost regulator. EN2 is not effective before EN1 is high.

30,31

PGND

Power Ground. It is refer to boost regulator.

32,33

SWBT

Boost Regulator Power Switching Output. SWBT is the drain of the internal MOSFET.

Connect the inductor and Schottky to both SWBT pins.

34

SWI

Boost Regulator Internal N-Channel MOSFET Pass Switch Input. It is the drain of internal

isolation MOSFET. Connect the cathode of Schottky to SWI.

35

SWO

Boost Regulator Internal N-Channel MOSFET Pass Switch Output. It is the source of

internal isolation MOSFET. SWO is the real boost regulator output.

36

FBBT

Boost Regulator Feedback Pin. Connect FBBT to the center of a resistor divider between

the boost regulator output and GND to set the boost regulator output voltage.

37

COMP

Boost Regulator Compensation Pin. This pin is used to compensate the regulator control

loop. Connect a capacitor or a series RC network from COMP pin to GND.

38

PG

Power Good Pin. Open-Drain Power Good Output indicator for buck regulator.

39

DLY3

Power Good Delay Pin. Connect a capacitor from DLY3 to GND to set the delay time

between buck regulator and PG indication signal.

40

AGND

Analog Ground

EP

GND

Exposed Paddle (GND)