OB2263

SMD Type Current Mode PWM Controller OB2263 ( SOT-23-6 ) 0.4+0.1 -0.1 ■ Features ● Audio Noise Free Operation ● External Programmable PWM Switching Frequency ● Internal Synchronized Slope Compensation ● Low VDD Startup Current and Low Operating Current (1.4mA) ● Leading Edge Blanking on Current Sense Input ● Good Protection Coverage With Auto Self-Recovery ● Gate Output Maximum Voltage Clamp (13V) ● Overload Protection (OLP) 6 54 1 23 +0.01 -0.01 +0.2 -0.1 0-0.1 +0.10.68 -0.1 +0.21.6 -0.1 +0.22.8 -0.1 +0.11.1 -0.1 IC Unit: mm 0.4 0.55 0.15 +0.02 -0.02 1.GND 2.FB 3.NC 4.SENSE 5.VDD 6.GATE ■ Block Diagram www.kexin.com.cn 1 SMD Type Current Mode PWM Controller OB2263 ■ Typical Applicattion IC OB2263 ■ Terminal Assignments Pin Name GND FB NC SENSE VDD GATE I/O Description P Ground I Feedback input pin. The PWM duty cycle is determined by voltage level into this pin and SENSE pin input. I Current sense input pin. Connected to MOSFET current sensing resistor node. P Chip DC power supply pin. O Totem-pole gate drive output for the power MOSFET. ■ Absolute Maximum Ratings Ta = 25℃ Parameter DC supply voltage VDD Zener Clamp Voltage FB VFB Input Voltage VSENSE Input Voltage to Sense Pin VCC DC clamp current Thermal Resistance Junction to Ambient Junction Temperature Operating temperature Storage Temperature Range Symbol VDD VCC VFB VSENSE ICC RθJA TJ TOPT Tstg Rating 10 to 30 VDD_Clamp+0.1V -0.3 to 7 -0.3 to 7 10 200 -20 to 150 -20 to 85 -55 to 160 Unit V mA ...