MP6003 – MONOLITHIC FLYBACK/SEPIC DC-DC CONVERTER

MP6003 Rev. 1.01

www.MonolithicPower.com

7

1/26/2014

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OPERATION

The

MP6003

uses

programmable

fixed-

frequency, peak current-mode PWM with a

single-ended primary architecture to regulate

the output voltage. The MP6003 incorporates

features such as protection circuitry and an

integrated high voltage power switch into a

small 8-pin SOIC. This product targets high

performance, cost effective DC-DC converter

applications.

--

+

--

+

--

--

+

+

1.2V

EA

1.0V

1.2V

3.0V

OVLO

6.5V

4.5V

UVLO

ERROR

AMPLIFIER

PWM

COMPARATOR

CURRENT LIMIT

COMPARATOR

CURRENT SENSE

SLOPE

COMP

CLOCK

--

+

--

+

--

+

Σ

THERMAL

MONITOR

SOFT-START

CURRENT LIMIT

OSC

LEB

5

3

4

2

RT

FB

COMP

LINE

REGULATOR

IBIAS

REF

6

8

1

VCC

SW

GND

STARTUP

CONTROL

LOGIC

7 VIN

Figure 1—Functional Block Diagram