MA2201 [MPOWER]

High Voltage, Step-up LED Driving Controller;


型号：	MA2201
厂家：	Major-Power
描述：	High Voltage, Step-up LED Driving Controller
文件：	总2页 (文件大小：195K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MA2201

High Voltage, Step-up LED Driving Controller



GENERAL DESCRIPTION

The MA2201 is a current mode step-up LED Driving controller. The input voltage range is

widely from 3.5V to 28V, designed to drive an external N-channel MOSFET. Output LED

current is programmable with V_FB＝0.2V.

The PWM switching frequency is 600KHz and allows usage of small external inductor.

External power MOSFET with very low R_DS(ON)provides high efficiency and good product

reliability. The controller also provides protection functions such as input under voltage

lock-out, output over voltage protection (only in SOP8L), current limit, and thermal shutdown.



FEATURES

3.5V to 28V Operating Input Voltage Range.

38V Maximum Output Voltage

600KHz Fixed Switching Frequency.

0.2V ±2% Feedback Voltage Range.

Up to 90% Efficiency.

Drives up to 10 WLEDs.

External Soft-Start Function.

Over Current Protection (OCP).

Thermal Shutdown Protection (OTP).

Input Under Voltage Lock-out (UVLO).

Output Over Voltage Protection (OVP, only in SOP8L).

Available in SOP8L and SOT23-6L Package Types.



SIMPLIFIED APPLICATION CIRCUIT

V_IN=12V

V_OUT

WLEDs

10uH

SS34

220KΩ

NMOS

OVP

GND

10uF

VIN

10KΩ

R_SENSE

0.05Ω

0.1uF

GATE

SENSE

R_SET

1.3Ω

Major Power Technology Co., Ltd.

Rev 1.2

24^th, Mar., 2020

1/13

MA2201



PIN ASSIGNMENT

Name

Description

Chip Enable Pin. Active high.

Internal pull high.

( Top View )

VIN

Input Supply Pin.

OVP

Negative Feedback Input Pin. The

FB voltage is 0.2V. Set LED current

through a resistor from FB to GND.

Soft-Start Pin. Connect an MLCC

Capacitor from SS to GND.

GND

VIN

GATE

SENSE

Current Limit Sense Voltage Pin.

SOP8L

SENSE Connect this pin to GND to disable

this function.

Gate drive for external N-channel

MOSFET.

FB SENSE GATE

GATE

Ground Pin for signal input ground,

GND

OVP

output ground, FB ground, SS

ground, and SENSE ground.

( Top View )

Output Over Voltage Protection.

When OVP actives, it will turn off

switching driver. Set OVP point

through a resistor divider. Connect

to GND to disable this function.

GND

SOT23-6L

VIN

SOP8L package only.



ORDER／MARKING INFORMATION

Top Marking《SOP8L》

Order Information

Part number

2 2 0 1

X X X X X

ID code:internal

WW: 01~52

Packing

Year: 19 = 2019

MA2201 X X

Blank: Tube

A : Taping

Package Type

S: SOP8L

Top Marking《SOT23-6L》

C:SOT23-6L

ID Code: Internal

C 2 Y W X

Week: 01~26(A~Z)

27~52(a~z)

Year: 9 = 2019

Major Power Technology Co., Ltd.

Rev 1.2

24^th, Mar., 2020

2/13

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