Low Power Constant Current LED Driver
RoHS Compliant Product
A suffix of “-C” specifies halogen or lead -free
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.
18mA~30mA constant current regulator
Self power structure, no extra power supply is needed
0.4V~17V output voltage
2µS/2µS current rising/falling time
Cascade-able for higher voltage application
No external current setting resistor is needed
1.6V~12V supply voltage
PWM dimming by VDD pin
-40℃~120℃ junction operating temperature
Less than 1%/V load(or line) regulation
General LED Lighting
LED back lighting
F GH J
Note: 18, 20, 25, 30 = Output Current(mA)
Weight: 0.07800g (Approximately)
11-Dec-2009 Rev. B
Any changes of specification will not be informed individually.
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