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MA2012

Major Power Technology Co., Ltd.

Rev 1.1

21

th, Feb., 2019

High Voltage, Step-up LED Driver



GENERAL DESCRIPTION

The MA2012 is a current mode step-up LED driver intended for small, low power

applications. The LED driver input voltage ranging is from 3.5V to 28V. The 600KHz

switching frequency allows small external inductors. Internal power MOSFET with very low

RDS(ON) provides high efficiency. The LED driver also requires protection functions such as

input Under-Voltage Lock-Out, output Over Voltage Protection, Current Limit and Thermal

Shutdown. The MA2012 is available in SOP8L-EP package.



FEATURES

-

3.5V to 28V Operating Input Voltage Range.

-

Maximum 38V Output Voltage.

-

600KHz Fixed Switching Frequency.

-

0.2V ±2% Feedback Voltage Range.

-

Up to 90% Efficiency.

-

External Soft-Start Function.

-

Drives up to 10 WLEDs.

-

Over Current Protection (OCP)

-

Thermal Shutdown Protection. (OTP)

-

Input Under Voltage Lockout. (UVLO)

-

Output Over Voltage Protection. (OVP)

-

Available in SOP8L-EP Package Type.



SIMPLIFIED APPLICATION CIRCUIT

1W

WLEDs

VIN=12V

VOUT

C3

0.1uF

R2

10K

Ω

D1

SS34

L1

10uH

U1

1

7

2

8

5

3

6

4

SS

VIN

OVP

SW

GND

SW

R1

220K

Ω

FB

EN

C2

10uF

RSET

1.3

Ω

SW

C1

10uF

C4

0.1uF

(E-PAD)