MP8768 – 8A, 28V, SYNCHRONOUS STEP-DOWN CONVERTER WITH INTERNAL MOSFET

MP8768 Rev. 1.0

www.MonolithicPower.com

2

12/12/2013

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2013 MPS. All Rights Reserved.

PACKAGE REFERENCE

TOP VIEW

FB

PG

EN/SYNC

IN

IN

IN

AAM

1

2

3

4

5

6

7

GND

BG

VCC

BST

SW

SW

SW

14

13

12

11

10

9

8

EXPOSED PAD

ON BACKSIDE

CONNECT TO GND

Refer PCB Layout example

in Application Section

Part Number*

Package

MP8768DL

3x4 QFN14

Temperature

Top Marking

–40

°C to +85°C

8768

For RoHS compliant packaging, add suffix –LF

(eg. MP8768DL–LF–Z)

All Other Pins................................ –0.3V to +6V

Junction Temperature.............................. 150

°C

Lead Temperature ................................... 260

°C

Storage Temperature.............. –65

°C to +150°C

Recommended Operating Conditions

(2)

Operating Temperature ............ –40

°C to +85°C

Thermal Resistance

(3)

3x4 QFN14 .............................48 ...... 11 ...

°C/W

Notes:

1) Exceeding these ratings may damage the device.

2) The device is not guaranteed to function outside of its

operating conditions.

3) Measured on JESD51-7, 4-layer PCB.

ELECTRICAL CHARACTERISTICS

Parameters

Symbol

Condition

Min

Typ

Max

Units

Supply Current (Shutdown)

0

1.0

μA

Supply Current (Quiescent)

1

1.2

mA

Switch On Resistance

(4)

50

mΩ

Switch Leakage

0

10

μA

Current Limit

(4)

9.5

A

Oscillator Frequency

400

600

800

KHz

Fold-back Frequency

0.25

Maximum Duty Cycle

85

90

%

Sync Frequency Range

0.3

2

MHz

Feedback Voltage

788

808

828

mV

Feedback Current

10

50

nA

EN/SYNC Input Low Voltage

0.4

V

EN/SYNC Input High Voltage

2

V

2

EN Input Current

0

μA

EN Turn Off Delay

5

μs

Power Good Threshold Rising

0.9

Power Good Threshold Falling

0.7