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AP2821 Datasheet, PDF (1/17 Pages) BCD Semiconductor Manufacturing Limited – High-side Power Distribution Switch with Enable | |||
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Advance Datasheet
High-side Power Distribution Switch with Enable
AP2821
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 switchâs
low RDS (ON), 120mΩ, 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: 120mΩ
@VIN=5.0V
⢠Compliant to USB Specifications
⢠Operating Voltage Range: 2.7V to 5.5V
⢠Low Supply Current: 35μA (Typ.)
⢠Low Shutdown Current: <1μA
⢠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
Mar. 2013 Rev 2. 0
SOT-23-5
Figure 1. Package Type of AP2821
BCD Semiconductor Manufacturing Limited
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