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R2A20118ASP Datasheet(PDF) 3 Page - Renesas Technology Corp |
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R2A20118ASP Datasheet(HTML) 3 Page - Renesas Technology Corp |
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3 / 10 page  R2A20118ASP Preliminary R03DS0002EJ0100 Rev.1.00 Page 3 of 9 Jul 14, 2010 Block Diagram GD-M VCC GD-S FB COMP OCP-M VREF ZCD-M ZCD-S RAMP OCP COMP1 2.5 V OVP BLOCK GND FB GD Disable ON: 10.5 V OFF: 9.3 V Vzcd_lo = 1.3 V 250 mVhys –0.1 V ~ 4.5 V 4.3 V VREF 0.9 V (design spec) ErrorAmp Iramp OCP-M OCP-S OCP COMP2 0.3 V OCP-S SS UVL BOUT FBLOW 10 μA 10 μA TL VREF S R Q Vcc reset TL COMP ZCD COMP1 ZCD COMP2 LATCH SW COMP OVP2 OVP2 BO Stop GD (BOUT) Hi: ON 7.5 μA RAMP-GAIN Hi: ON Hi: ON 10 μA 80 μA 0 to 240 μA VREF VREF VREF VREF RAMP AMP RT –0.1 V ~ 4.5 V Clamp Clamp + – 1.4 V + – 2.275 V (design spec) + – + – + – 3.2 μA 5 μA 5 μA 3.2 V 6.4 μA Stop GD Hi: ON VREF: 5 V UVLO + – Vac_lo = 3.2 V 390 mVhys Ibo, Iramp Tstart Logic – + – + – + – + 10 μA COMP Discharge |
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