Elektronische Bauelemente

SSMG501 Series

Low Power Constant Current LED Driver

11-Dec-2009 Rev. B

Page 1 of 4

http://www.SeCoSGmbH.com/

Any changes of specification will not be informed individually.

RoHS Compliant Product

A suffix of “-C” specifies halogen or lead -free

DESCRIPTION

SSMG501 is a simple general purpose current regulation component that can be easily used in various LED

lighting applications. With the excellent load/line regulation and minimized chip current skew, SSMG501 keep LED’s

current very stable even when power or load fluctuate in a wide

range

and make intensity very uniform in large

area of LED light source.

Except power supply function, the VDD pin of SSMG501 is output enable (OE) also, and can be used in digital

PWM controlled circuit to achieve more precise current adjusting in gray level applications.

The minimized power supply voltage let SSMG501 be used as a current regulative diode (CRD) when VDD and

VP pin are tight together. This application makes SSMG501 very easy to be used. Just like a diode, when this diode

is inserted in LED series, the current in circuit is regulated.

In high supply voltage and low LED load voltage application, two or more single channel SSMG501 can be

connected in series to share redundant high voltage. the extra redundant voltage can be share by each SSMG501 by

a reasonable mechanism. This special capability let SSMG501 very suit for the usage of wide range power supply

that many liner type LED drivers cannot work.

FEATURES

18mA~30mA constant current regulator

Self power structure, no extra power supply is needed

0.4V~17V output voltage

2

µS/2µS current rising/falling time

Cascade-able for higher voltage application

No external current setting resistor is needed

1.6V~12V supply voltage

-40℃~120℃ junction operating temperature

Less than 1%/V load(or line) regulation

APPLICATIONS

General LED Lighting

LED back lighting

LED torch/flashing

RGB lighting

MARKING CODE

SSMG501-18: 1A18

SSMG501-20: 1A20

SSMG501-25: 1A25

SSMG501-30: 1A30

Note: 18, 20, 25, 30 = Output Current(mA)

PACKAGE INFORMATION

Weight: 0.07800g (Approximately)

SOT-23

Millimeter

Millimeter

REF.

Min.

Max.

REF.

Min.

Max.

A

2.70

3.10

G

0.09

0.18

B

2.10

3.00

H

0.45

0.70

C

1.20

1.80

J

0.08

0.25

D

0.89

1.40

K

-

-

E

1.78

2.04

L

0.89

1.02

F

0.30

0.50

Top View

A

L

C B

D

G

H

J

F

K

E

1

2

3

1

2

3