Skip to main content
Log in
Microchip Technology CL520N3-G — Signal Isolation

CL520N3-G Linear LED Driver, 20 mA, TO-92-3, Active

MPNCL520N3-G
End of Life

Microchip CL520N3-G linear LED driver, 20 mA constant-current output, 1V to 90V output range, TO-226-3 / TO-92-3 through-hole package, -40°C to 125°C junction temperature, active lifecycle.

$0.6Ref. price · indicative, final on quote
Microchip Technology CL520N3-G datasheet (PDF)
PackagingTO-226-3, TO-92-3 (TO-226AA)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CL520N3-G specifications
ParameterValue
TypeLinear
MountingThrough Hole
Voltage - output1V ~ 90V
Voltage4.75V
Current - output (Channel)20mA
I/O channels1
Operating temperature-40°C ~ 125°C (TJ)
PackageBag
ApplicationsLighting, Signage
CaseTO-226-3, TO-92-3 (TO-226AA)

Product details

Linear LED driver for signage and lighting — no inductor, no noise

The Microchip CL520N3-G is a linear constant-current LED driver designed for lighting and signage applications. It delivers a fixed 20 mA per channel from a single output, with an output voltage range spanning 1 V to 90 V — enough headroom to drive long LED strings directly from a high-voltage rail without a switching regulator. The through-hole TO-92-3 package keeps assembly simple for low- to medium-volume production or retrofit boards.

20 mA fixed current — no external resistor needed

The CL520N3-G regulates output current to 20 mA without requiring an external sense resistor. That simplifies the BOM and eliminates a trim step. The supply range starts at 4.75 V minimum and goes up to 90 V maximum, so you can power it from a 5 V logic rail or a 48 V telecom bus — the same part works across both.

No LTB notices, no NRND flags. ROHS3 compliant. For new designs or production fills, the CL520N3-G is a current-catalog item with no imminent obsolescence risk.

Frequently asked questions

What is the maximum number of LEDs that CL520N3-G can drive?

The CL520N3-G delivers 20 mA constant current and can output from 1 V to 90 V. The number of series LEDs depends on the forward voltage of each LED at 20 mA. For example, with white LEDs at roughly 3 V forward drop, you can drive up to 30 in series from a 90 V rail. Parallel strings are not supported — this is a single-output device.

Can CL520N3-G be used with PWM dimming?

Yes. As a linear constant-current driver, you can PWM the supply voltage or the LED string at the output. The 20 mA current regulation responds fast enough for typical dimming frequencies in signage and architectural lighting. There is no dedicated PWM input pin — the dimming is external.