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AP2821

High-Side Power Distribution Switch With Enable

Datasheet

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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), 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.

Application(s)

USB Power Management

USB Bus/Self Powered Hubs

Hot-plug Power Supplies

Battery-charger Circuits

Notebooks, Motherboard PCs

Product Specifications

Product Parameters

Type	OCP Switch
AEC Qualified	No
Compliance (Only Automotive supports PPAP)	Standard
Maximum Continuous Output Current (A)	1.5
(MAX) Maximum Current Limit Fixed (A)	2.8
Adjustable Current Limit	No
Channels	1
Enable Logic	Active High
Minimum Operating Voltage (V)	2.7
Maximum Operating Voltage (V)	5.5
Quiescent Current Typ (µA)	35
RDS(ON) (VIN = 5V) Typ (mΩ)	120
Reverse Current Block	Yes
Minimum Power Supply Voltage (V)	2.7
Maximum Power Supply Voltage (V)	5.5
Output Discharge	Yes
(TYP) Output Rise Time mS	1.9
OCP Output Latch Off	No
OCP Flag	No
Power Good	No
Operating Ambient Temperature Range (°C)	-40 to 85
Overtemperature Protection	Yes
UL Certificate	No

Technical Documents

Recommended Soldering Techniques

TN1.pdf

RoHS CofC

RoHSFile

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2672	2024-03-11	2024-09-07	Device End of Life (EOL)