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Data Sheet

500mA High-side Power Distribution Switch with Enable and Flag AP2805

Aug. 2012 Rev 1. 0 BCD Semiconductor Manufacturing Limited

General Description

The AP2805 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 RDS (ON), 60mΩ, design

easily to meet USB voltage drop requirements. It

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 AP2805 is available in standard packages of

SOIC-8 and MSOP-8.

Features

•

Low MOSFET on Resistance:

60mΩ@V

=5.0V

• Compliant to USB Specifications

•

Operating Voltage Range: 2.7V to 5.5V

•

Low Supply Current: 60µA (Typ.)

•

Low Shutdown Current: 1.0µA (Max)

•

Guarantee 0.5A Continuous Load

•

Current Limit: 0.7A (Min), 1.4A (Max)

•

Under-voltage Lockout

•

Logic Level Enable Pin: Available in

Active-high or Active-low Version

•

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 for

A/C Versions

• UL Approved (File No. E339337)

• Nemko CB Scheme IEC60950-1, Ref. Certif

No. NO67288

Applications

• USB Power Management

•

USB Bus/Self Powered Hubs

• Hot-plug Power Supplies

• Battery-charger Circuits

• Notebooks, Motherboard PCs

Figure 1. Package Types of AP2805

SOIC-8 MSOP-8

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