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OB2535 is a high performance offline PWM Power switch for low power AC/DC charger and adapter applications. It can achieve ±5% precision constant voltage (CV) and high precision constant current (CC). It operates in primary-side sensing and regulation. Consequently, opto-coupler and TL431 could be eliminated.
Features:
◆ ±5% constant voltage regulation at universal AC input
◆ Primary-side sensing and regulation without TL431 and opto-coupler
◆ Programmable CV and CC regulation
◆ Adjustable constant current and output power setting
◆ Built-in primary winding inductance compensation
◆ Programmable cable drop compensation
◆ Power on soft-start
◆ Built-in leading edge blanking (LEB)
◆ Cycle-by-Cycle current limiting
◆ VDD under voltage lockout with hysteresis (UVLO)
◆ VDD OVP
◆ VDD clamp
◆ Available in SOP8 packages, RoHS compliant
Applications:
◆ CC/CV Battery Charger
◇Cell/Cordless Phone Charger
◇Digital Camera Charger
◇PDA Charger
◆ Small Power Adapter
◆ Auxiliary Power for PC, TV etc.
◆ Linear Regulator/RCC Replacement
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Device
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MOSFET Rdson(ohm)
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Package
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Max Pout(W)note
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Max Pout(W)(85~264V)
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Frequency
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OB2531
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External
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SOT23-6
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--
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--
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95kHz
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OB2532
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External
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SOT23-6
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--
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--
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60kHz
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OB2535/E
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12
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SOP8
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10
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5
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60kHz
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OB2536/E
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12
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DIP8
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16
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9
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60kHz
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OB2538/E
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5
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DIP8
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20
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15
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60kHz
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OB2539
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5
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DIP8
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18
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13
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95kHz
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