Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. TO252 (DPAK)

TO220-3

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AP1122 (Obsolete)

1A LOW DROPOUT POSITIVE REGULATOR

Datasheet

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Description

AP1122 is a low dropout positive fixed-mode regulator with 1A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 1.2V logic supply. AP1122 is also well suited for other applications such as VGA cards. AP1122 is guaranteed to have lower than 1.3V dropout at full load current making it ideal to provide well-regulated outputs of 1.2 output voltage with 2.5V input voltage supply.

Feature(s)

1.3V maximum dropout at full load current

Fixed 1.2V± 2% output voltage

Fast transient response

Output current limiting

Built-in thermal shutdown

Good noise rejection

Packages: SOT223-3L, TO252-3L, SOT89-3L, TO263-3L and TO220-3L

SOT223-3L and TO252-3L: Available in “Green” Molding Compound (No Br, Sb)

Lead Free Finish/RoHS Compliant

Application(s)

PC peripheral

Communication

Specifications & Technical Documents

Product Parameters

Channels	1
Enable Active	N/A
Features	High current
I_OUT	1
I_{Q (mA)}	N/A
PSRR	60
V_OUT	1.2

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

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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-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products