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MT7212

Step-down constant current LED driver with internal MOS switch

DESCRIPTION
MT7212 is a continuous mode inductive step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the total LED chain voltage. The device operates with a wide input supply voltage up to 80V and provides an externally adjustable output current, and it is suitable for high input voltage and output power applications.
MT7212 combines a 80V power MOSFET. It sets the average output current by the low-side output current sense circuit.
MT7212 provides various protection features to improve the system reliability, including over temperature regulation (OTR), and over temperature shutdown (OTP), LED short/open protection, etc.

FEATURES
 Wide input voltage range: 6.5V ~ 80V
 Few external components
 Built-in VIN line compensation
 Proprietary frequency Jitter technique to reduce EMI
 High efficiency (up to 97%)
 Adjustable constant output current
 Up to 2.5MHz switching frequency
 Over temperature regulation (OTR)
 Inherent open/short-circuit LED protection
 High accuracy output current (±3%)
 Available in SOP8 packages

APPLICATION
 Automotive lighting
 General purpose constant current source
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