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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AP2821 데이터시트(PDF) 1 Page - BCD Semiconductor Manufacturing Limited |
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AP2821 데이터시트(HTML) 1 Page - BCD Semiconductor Manufacturing Limited |
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1 / 17 page  Advance Datasheet High-side Power Distribution Switch with Enable AP2821 Mar. 2013 Rev 2. 0 BCD Semiconductor Manufacturing Limited 1 General Description The AP2821 is an integrated high-side power switch that consists of TTL compatible enables input, a charge pump, and N-Channel MOSFET. The switch’s low RDS (ON), 120m Ω, meets USB voltage drop requirements. It includes soft-start to limit inrush current, over-current protection with fold-back, and thermal shutdown to avoid switch failure during hot plug-in. Under voltage lockout (UVLO) function is used to ensure the device remain off unless there is a valid input voltage present. And no reverse current when power off, with shutdown pull-low resistor to discharge the output capacitor when EN is disable. The AP2821 is available in standard package of SOT-23-5. Features • Low MOSFET on Resistance: 120m Ω @VIN=5.0V • Compliant to USB Specifications • Operating Voltage Range: 2.7V to 5.5V • Low Supply Current: 35 μA (Typ.) • Low Shutdown Current: <1 μA • Current Limit with Fold-back: 2A • Under-voltage Lockout • Soft Start-up • Over-current Protection • Over Temperature Protection • Load Short Protection with Fold-back • No Reverse Current when Power off • Pass System ESD: IEC61000-4-2 ± 16KV (Air Discharge) and ± 8KV (Contact Discharge) on USB Connector Applications • USB Power Management • USB Bus/Self Powered Hubs • Hot-plug Power Supplies • Battery-charger Circuits • Notebooks, Motherboard PCs Figure 1. Package Type of AP2821 SOT-23-5 |
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