EV24830-S-00A

Buck- Boost Mode White LED Driver

5V – 90V, Programmable Frequency

EV24830-S-00A Rev.1.1

www.MonolithicPower.com

1

5/4/2014

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

© 2014 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP24830 is a 90V, white LED driver

suitable for inverting step-up/down applications.

It supports a wide input range with excellent

load and line regulation. Its programmable

current limit provides customized applications

with wide power range. Current mode operation

provides fast transient response and eases loop

stabilization. Fault condition protection includes

thermal shutdown, cycle-by-cycle peak current

limiting, open strings protection and output

short circuit protection.

The MP24830 incorporates both DC and PWM

dimming onto a single control pin. The separate

input reference ground pin allows for direct

enable and/or dimming control for a positive to

negative power conversion

ELECTRICAL SPECIFICATION

Parameter

Symbol

Value

Units

Input Voltage

VIN

5 To

V

Enable Voltage

VEN

5

V

LED Current

ILED

1

A

Switching Frequency

FS

200

kHz

Output Voltage

Protection

28

V

FEATURES

• Programmable Maximum Output Current

• Unique Operation (Buck-Boost Mode)

• Wide 5V to 90V Operating Input Range

• Adjustable Switching Frequency

• Analog and PWM Dimming

• 0.2V Reference Voltage

• 5μA Shutdown Mode

• No Minimum LED Required

• Stable with Low ESR Output Ceramic

Capacitors

• Cycle-by-Cycle Over Current Protection

• Thermal Shutdown Protection

• Open Strings Protection

• Output Short Circuit Protection

• Available in 14-Pin SOIC14

APPLICATIONS

• General LED Illuminations

• Automotive LED Lighting

• TV Backlighting System

• LCD Backlight Panels

• Handheld Computers

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

status, please visit MPS website under Products, Quality Assurance page.

“MPS” and “The Future of Analog IC Technology” are registered trademarks of

Monolithic Power Systems, Inc.

ADAM (Analog Digital Adaptive Modulation) and AAM (Advanced

Asynchronous Mode) are trademarks of Monolithic Power Systems, Inc.

EV24830-S-00A EVALUATION BOARD

TBD

(L x W x H) 6.4cm x 6.4cm x 1.3cm

EV24830-S-00A

MP24830

LED STRING VOLTAGE ( V )

Efficiency vs. LED

String Voltage

80

84

88

92

96

100

10

15

20

25

30

35

40