GENERAL DESCRIPTION
a lower cost. compliant, the IC offers a Burst Mode control FEATURES
feature and ultra-low start-up current and operating current, that is, at the condition of no load or light load, HT2273 can reduce the switch frequency linearly which minimize the switching power loss; the ultra-low startup current and operating current IP make a reliable power for startup design, and also large resistor can be used in the startup circuit to improve switching efficiency. Leading-edge blanking on current sense(CS) input removes the signal glitch due to snubber diode circuit reverse C recovery and thus greatly reduces the external component count and system cost in the design. HT2273 offers comprehensive protection coverage T with automatic self-recovery feature, including cycle by cycle over current protection (OCP), over load protection (OLP),VCC Clamp, under voltage lockout (UVLO), OTP and OVP shut down latch. O The gate-driven output is clamped to maximum 12V to protect the internal MOSFET.