EVQ1531-M-00A

Low Power, Triple Output Step-Up

Plus Charge Pump for TFT Bias

EVQ1531-M-00A Rev.1.0

www.MonolithicPower.com

1

5/10/2017

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

© 2017 MPS. All Rights Reserved.

Monolithic Power Systems

GENERAL DESCRIPTION

The EVQ1531-M-00A Evaluation Board is

designed to demonstrate the capabilities of

MPS’ MP1531 triple output step-up converter

with charge-pumps.

The MP1531 includes a 250KHz fixed-frequency

step-up converter and a positive and negative

linear regulator. The linear regulators are

powered via charge-pumps driven by the step-up

converter switch node.

A single on/off control enables all 3 outputs.

The outputs are internally sequenced at power-

on for ease of use. An internal soft-start

prevents overloading the input source at startup.

Cycle-by-cycle current limit reduces component

stress.

ELECTRICAL SPECIFICATION

Parameter

Symbol

Value Units

Input Voltage

2.7-5.0

V

Main Output Voltage

5

V

Main Output Current

100

mA

(+) Charge Pump Voltage

15

V

(+) Charge Pump Current

5

mA

(–) Charge Pump Voltage

–10

V

(–) Charge Pump Current

5

mA

FEATURES

 2.7V to 5.5V Operating Input Range

 500mA Switch Current Limit

 3 Outputs in Single Package

 Step-Up Converter up to 22V

 Positive 10mA Linear Regulator

 Negative 10mA Linear Regulator

 250mΩ Internal Power MOSFET Switch

 Up to 95% Efficiency

 1μA Shutdown Mode

 Fixed 250KHz Frequency

 Positive Regulator up to 38V

 Negative Regulator down to -20V

 Internal Power-On Sequencing

 Adjustable Soft-Start/Fault Timer

 Thermal Shutdown

 Cycle-by-Cycle Over Current Protection

 Under Voltage Lockout

 Ready Flag

APPLICATIONS

 TFT LCD Displays

 Portable DVD Players

 Tablet PCs

 Car Navigation Displays

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

directive. For MPS green status, please visit MPS website under Quality

Assurance.

“MPS” and “The Future of Analog IC Technology” are Registered

Trademarks of Monolithic Power Systems, Inc.

EVQ1531-M-00A EVALUATION BOARD

Dimensions (2.34”X x 2.25”Y x 0.50”Z)

Board Number

MPS IC Number

EVQ1531-M-00A

MPQ1531DM

            Load Efficiency 

60

68

76

84

92

100

0.00

0.03

0.06

0.09

0.12

0.15

LOAD MAIN OUTPUT ( A )