OB2273MP datasheet(8/10 Pages) ETC2

8 / 10 page

OB2273

High Performance Current Mode PWM Controller

Good power supply system reliability is achieved

with auto-recovery protection features including

Cycle-by-Cycle current limiting (OCP), Over Load

Protection (OLP), and Under Voltage Lockout on

VDD (UVLO), and latch shutdown features

including over temperature protection (OTP), fixed

or adjustable VDD over voltage protection (OVP).

With On-Bright Proprietary technology, the OCP is

line voltage compensated to achieve constant

output power limit over the universal input voltage

range.

At overload condition when FB input voltage

exceeds power limit threshold value for more than

TD_PL, control circuit reacts to shut down the

converter. It restarts when VDD voltage drops

below UVLO limit. For protection with latch shut

down mode, control circuit shutdowns (latch) the

power MOSFET when an Over Temperature

condition or Over Voltage condition is detected

until VDD drops below 5V (Latch release voltage) ,

and device enters power on restart-up sequence

thereafter.

Confidential

Preliminary Datasheet

OB_DOC_DS_227302

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OB2273MP Datasheet(PDF) 8 Page - List of Unclassifed Manufacturers