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PDF LM3404 Data sheet ( Hoja de datos )
| Número de pieza | LM3404 | |
| Descripción | 1.0A Constant Current Buck Regulator | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LM3404 (archivo pdf) en la parte inferior de esta página. Total 2 Páginas | ||
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ADVANCE INFORMATION
October 2006
LM3404/04HV
1.0A Constant Current Buck Regulator for Driving High
Power LEDs
General Description
The LM3404/04HV are monolithic switching regulators de-
signed to deliver constant currents to high power LEDs. Ideal
for automotive, industrial, and general lighting applications,
they contain a high-side NFET switch with a minimum over-
temperature current limit of 1.2A for step-down (Buck) regu-
lators. Hysteretic control with controlled on-time coupled with
an external resistor allow the converter output voltage to
adjust as needed to deliver constant current to series and
series-parallel connected LED arrays of varying number and
type. Output current dimming via PWM, broken/open LED
protection, low-power shutdown and thermal shutdown com-
plete the feature set.
Features
n Integrated 1.2A NFET
n VIN Range 6V to 42V (LM3404)
n VIN Range 6V to 75V (LM3404HV)
n 1.2A Output Current Over Temperature
n Cycle-by-Cycle Current Limit
n No Control Loop Compensation Required
n Separate PWM Dimming and Low Power Shutdown
n Supports all-ceramic output capacitors and
capacitor-less outputs
n Thermal shutdown protection
n SO-8 Package
Applications
n LED Driver
n Constant Current Source
n Automotive Lighting
n General Illumination
n Industrial Lighting
Typical Application
Connection Diagram
20205401
20205402
8-Lead Plastic SO-8 Package
NS Package Number M08A
© 2006 National Semiconductor Corporation DS202054
www.national.com
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| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet LM3404.PDF ] | |
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