MP8652 – 15A, 14V, HIGH FREQUENCY STEP-DOWN WITH SYNCHRONOUS GATE DRIVER

MP8652 Rev. 0.9

www.MonolithicPower.com

2

10/26/2009

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2009 MPS. All Rights Reserved.

PACKAGE REFERENCE

TOP VIEW

PIN 1 ID

1

2

3

4

5

6

7

VCC

SYNCOUT

SYNCIN

EN

SS/TRK

FB

COMP

17

16

15

14

13

12

11

SW

VIN

PG BST VIN

GND GATE VIN

89

10

20

19

18

Part Number*

Package

Temperature

MP8652DL

3mm x 4mm

QFN

–40

°C to +85°C

For RoHS compliant packaging, add suffix –LF

(e.g. MP8652DL–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)

QFN (3mm x 4mm)................. 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 approximately 1” square of 1 oz copper.

ELECTRICAL CHARACTERISTICS

Parameters

Symbol

Condition

Min

Typ

Max

Units

Feedback Voltage

4.5V

0.794

0.810

0.826

V

Feedback Current

10

nA

Switch On Resistance

(4)

25

mΩ

Switch Leakage

0.1

10

μA

Current Limit

(4)

21

A

Oscillator Frequency

400

kHz

Fold-back Frequency

100

kHz

Maximum Duty Cycle

90

%

Minimum On Time

(4)

100

ns

Soft-Start Charging Current

8

μA

Maximum COMP Level

4.4

V

Gain of Error Amplifier

2

mA/V

Error Amplifier Sink Current

–270

μA

Error Amplifier Source Current

+270

μA

Power Good Ramp Up Threshold

90

%

Power Good Ramp Down Threshold

85

%