MP1660

16V, 3A, 600kHz, High-Efficiency,

Synchronous, Step-Down Converter

with 0.6V VREF in a SOT563 Package

MP86953 Rev. 1.0

www.MonolithicPower.com

1

6/9/2020

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

© 2020 MPS. All Rights Reserved.

DESCRIPTION

The

MP1660

is

a

fully

integrated,

high-

frequency, synchronous, rectified, step-down,

switch-mode

converter

with

internal

power

MOSFETs. The MP1660 offers a very compact

solution that achieves 3A of output current, with

excellent load and line regulation over a wide

input range. The MP1660 uses synchronous

mode operation for higher efficiency over the

output current load range.

Constant-on-time

(COT)

control

operation

provides very fast transient response, easy loop

design, and very tight output regulation.

Full protection features include short-circuit

protection (SCP), over-current protection (OCP),

under-voltage protection (UVP), and thermal

shutdown.

The MP1660 requires a minimal number of

readily

available,

standard

external

components, and is available in a space-saving

SOT563 package.

FEATURES

 Wide 4.5V to 16V Operating Input Range

 110mΩ/60mΩ Low R

DS(ON) Internal Power

MOSFETs

 190μA Low I

Q

 High-Efficiency Synchronous Mode

Operation

 Power-Save Mode at Light-Load

 Fast Load Transient Response

 600kHz Switching Frequency

 Internal Soft Start (SS)

 Over-Current Protection (OCP) and Hiccup

Mode

 Thermal Shutdown

 Output Adjustable from 0.6V

 Available in a SOT563 Package

Optimized Performance with

MPS Inductor MPL-AL6050 Series

APPLICATIONS

 Security Cameras

 Digital Set-Top Boxes

 Flat-Panel Television and Monitors

 General Purposes

All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For

MPS green status, please visit the MPS website under Quality Assurance.

“MPS”, the MPS logo, and “Simply, Easy Solutions” are registered trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

MP1660

VIN

EN

VIN

FB

BST

VOUT

SW

GND

12V

C1

22

μF

C3

1

μF L1

4.7

μH

C2

22

μFx2

R1

40.2k

Ω

R2

8.87k

Ω

EN

3.3V/3A

R3

18k

Ω

R4

10

Ω

Efficiency vs. Load Current

VOUT = 3.3V, L = 4.7µH, DCR = 16.5m

Ω

70

75

80

85

90

95

100

0.01

0.1

1

10

LOAD CURRENT (A)

VIN=5V

VIN=12V

VNI=16V