MP6004—PRIMARY-SIDE REGULATED FLYBACK/BUCK 80V DCDC CONVERTER

MP6004 Rev. 1.0

www.MonolithicPower.com

12

4/14/2015

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2015 MPS. All Rights Reserved.

PIN FUNCTIONS

PIN#

Name

Description

1, 2

GND

Switching converter power return

.

3

EN

Regulator on/off control input.

EN can program VIN UVLO start-up through a Zener

diode and a resistor divider.

4,12

NC

No connection.

NC is not connected internally. Float NC or connect to GND in layout.

5

VIN

Positive power supply terminal.

6

FB2

Feedback for non-isolated buck solution.

Connect FB2 to VIN in flyback application.

7

MODE

Buck mode or flyback mode select pin.

MODE is pulled up internally to VCC through a

1.5 µA current source. Float MODE for buck application mode; connect MODE to GND for

flyback application mode.

8

FB1

Feedback for flyback solution.

Connect FB1 to GND in buck application.

9

ILIM

IC switching current limit program pin.

Connect ILIM to GND through a resistor to

program the peak current limit.

10

AGND Analog power return for switching converter control circuit.

11

VCC

Supply bias voltage pin, powered through internal LDO from VIN

. It is recommended

to connect a capacitor (no less than 1 µF) between VCC and GND.

13,14

SW

Drain of converter switching MOSFET.