Diodes AP2822 Uživatelský manuál stáhnout pdf

Preliminary Datasheet

0.5A to 2.0A High-side Power Distribution Switches AP2822

Dec. 2012 Rev 1. 1 BCD Semiconductor Manufacturing Limited

General Description

The AP2822 is an integrated high-side power switch

that consists of N-Channel MOSFET, charge pump,

over current & temperature and other related protection

circuits. The switch’s low R

DS(ON)

, 85mΩ, is designed

to meet USB voltage drop requirements. The IC

includes soft-start to limit inrush current, over-current

protection, load short 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. A FLAG output is

available to indicate fault conditions to the local USB

controller.

The AP2822 is available in the standard package of

SOT-23-5.

Applications

• USB Power Management

•

USB Bus/Self Powered Hubs

• Hot-plug Power Supplies

• Battery-charger Circuits

• Notebooks, Motherboard PCs

Features

•

Low MOSFET On Resistance: 85mΩ

• Compliant to USB Specifications

• Available 4 Versions of Continuous Load:

0.5A/1.0A/1.5A/2.0A

• Logic Level Enable Pin: Available with

Active-high or Active-low Version

• Operating Voltage Range: 2.7V to 5.5V

• Low Supply Current: 68µA (Typ.)

• Low Shutdown Current: 1.0µA (Max)

• Under-voltage Lockout

• Soft Start-up

• Over-current Protection

• Over Temperature Protection

• Load Short Protection with Fold-back

• No Reverse Current When Power Off

• Deglitched FLAG Output with Open Drain

• With Output Shutdown Pull-low Resistor

Figure 1. Package Type of AP2822

SOT-23-5

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