Microchip MIC3223 Bedienungsanleitung


Lies die bedienungsanleitung für Microchip MIC3223 (24 Seiten) kostenlos online; sie gehört zur Kategorie Nicht kategorisiert. Dieses Handbuch wurde von 19 Personen als hilfreich bewertet und erhielt im Schnitt 4.6 Sterne aus 10 Bewertungen. Hast du eine Frage zu Microchip MIC3223 oder möchtest du andere Nutzer dieses Produkts befragen? Stelle eine Frage

Seite 1/24
MIC3223
High Power Boost LED Driver with
Integrated FET
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
January 2010
M9999-011510-A
General Description
The MIC3223 is a constant current boost LED driver
capable of driving a series string of high power LEDs. The
MIC3223 can be used in general lighting, bulb replacement,
garden pathway lighting and other solid state illumination
applications.
The MIC3223 is a peak current mode control PWM boost
regulator and the 4.5V and 20V operating input voltage
range allows multiple applications from a 5V or a 12V bus.
The MIC3223 implements a fixed internal 1MHz switching
frequency to allow for a reduction in the design footprint
size. Power consumption has been minimized through the
implementation of a 200mV feedback voltage that provides
an accuracy of ±5%. The MIC3223 can be dimmed through
the use of a PWM signal and features an enable pin for a
low power shutdown state.
The MIC3223 is a very robust LED driver and offers the
following protection features: over voltage protection (OVP),
thermal shutdown, switch current limiting and under voltage
lockout (UVLO).
The MIC3223 is offered in a low profile exposed pad 16-pin
TSSOP package.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
4.5V to 20V supply voltage
200mV feedback voltage with an accuracy of ±5%
Step-up output voltage (boost) conversion up to 37V
1MHz switching frequency
100m/3.5A internal power FET switch
LEDs can be dimmed using a PWM signal
User settable LED current (through external resistor)
Externally programmable soft-start
Protection features that include:
Output over-voltage protection (OVP)
Under-voltage lockout (UVLO)
Over temperature protection
Junction temperature range: -40°C to +125°C
Available in a exposed pad 16-pin TSSOP package
Applications
Architectural lighting
Industrial lighting
Signage
Landscape lighting (garden/pathway)
Under cabinet lighting
MR-16 bulbs
_______________________________________________________________________________________________________________________
Typical Application


Produktspezifikationen

Marke: Microchip
Kategorie: Nicht kategorisiert
Modell: MIC3223

Brauchst du Hilfe?

Wenn Sie Hilfe mit Microchip MIC3223 benötigen, stellen Sie unten eine Frage und andere Benutzer werden Ihnen antworten