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AMS1117-1.2: 1 A Fixed 1.2 V LDO, SOT-223

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AMS AMS1117-1.2 low-dropout linear regulator, fixed 1.2 V output, 1 A output current, 1.3 V max dropout, SOT-223 package with tab on pin 2.

ldoregulator1.2vsot-223ams1117power
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ams1117-1-2.adom-lbr.json Publish 1.0.0 6d ago
ams1117-1-2.glb Publish 1.0.0 6d ago
ams1117-1-2.kicad_sym Publish 1.0.0 6d ago
ams1117-1-2.lbr Publish 1.0.0 6d ago
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SOT-223-3_TabPin2.kicad_mod Publish 1.0.0 6d ago

AMS1117-1.2: 1 A Fixed 1.2 V LDO, SOT-223

Fixed 1.2 V variant of the ubiquitous AMS1117 1 A low-dropout linear regulator, in the SOT-223 package with the tab carrying VOUT (pin 2). Needs a 22 uF output capacitor for stability per the datasheet.

Key specs

Parameter Value
Output voltage 1.2 V fixed
Output current 1 A
Dropout 1.3 V max at 1 A
Input range up to 15 V
Package SOT-223, tab = pin 2 (VOUT)

Where it is used

Supplies the KSZ9131 gigabit PHY 1.2 V core rail (U902) on the Large Automotive Eth Switch Molecule, fed from the 3.3 V rail.

Note: the sibling page ams1117-3-3 covers the 3.3 V variant.

Ordering

Vendor Part number
AMS / UMW and second sources AMS1117-1.2

Files

File What
ams1117-1-2.kicad_sym KiCad symbol (3 pins)
SOT-223-3_TabPin2.kicad_mod KiCad footprint
ams1117-1-2.step / ams1117-1-2.glb 3D model
ams1117-1-2.lbr Fusion 360 / EAGLE library
ams1117-1-2.adom-lbr.json adom-lbr canonical JSON