[DEPRECATED] 1 A Low-Dropout Regulator - AMS1117 → ams-ams1117 / umw-ams1117

@@ -1,3 +1,12 @@+> # DEPRECATED — split by manufacturer+>+> AMS1117 is second-sourced, and the two manufacturers ship **different voltage lineups, different packages and materially different limits**. Merging them onto one page meant every number needed a vendor caveat. This page has been split in two:+>+> - **[1 A Low-Dropout Regulator AMS — AMS1117](https://wiki.adom.inc/adom/ams-ams1117)** — Advanced Monolithic Systems, the original. 1.5–5.0 V including **2.85 V**; SOT-223 / TO-252 / **SO-8**.+> - **[1 A Low-Dropout Regulator UMW — AMS1117](https://wiki.adom.inc/adom/umw-ams1117)** — UMW / Youtai Semiconductor, the second source. **1.2 V**–5.0 V; SOT-223 / TO-252 / **SOT-89**.+>+> Check your BOM before picking one. If it does not name a manufacturer, design to the tighter of the two sets of limits. The content below is kept for reference and is no longer maintained.+ # AMS1117 — 1 A Low-Dropout Voltage Regulator  The **AMS1117** is a three-terminal **1 A low-dropout linear voltage regulator**, available in seven fixed voltages (1.2 / 1.5 / 1.8 / 2.5 / 2.85 / 3.3 / 5.0 V) across its two manufacturers, or as an adjustable regulator set by two resistors around a 1.25 V reference. It operates down to 1 V input-to-output differential (1.3 V max dropout at 0.8 A), is trimmed on-chip to 1.5 %, and includes internal current limiting and thermal shutdown. It is pin-compatible with older three-terminal SCSI regulators, and comes in SOT-223, TO-252 (DPAK) and 8-lead SOIC.

@@ -84,6 +84,22 @@ code{background:rgba(139,148,158,.16);padding:1px 6px;border-radius:5px;font-siz .dsheet{width:100%;height:840px;border:1px solid var(--border);border-radius:12px;background:var(--surface)} </style></head><body><div class=wrap> +<div style="background:rgba(210,153,34,.10);border:1px solid rgba(210,153,34,.34);border-left:5px solid #d29922;border-radius:12px;padding:18px 20px;margin:0 0 22px">+<div style="font-size:16px;font-weight:800;color:#d29922;letter-spacing:.04em;margin-bottom:8px">DEPRECATED &mdash; SPLIT BY MANUFACTURER</div>+<p style="margin:0 0 12px;font-size:14.5px;color:var(--text-body)">AMS1117 is second-sourced, and the two manufacturers ship <b>different voltage lineups, different packages and materially different limits</b>. Merging them onto one page meant every number needed a vendor caveat, which is exactly the sort of thing that gets misread off a datasheet page. This page has been split in two:</p>+<div style="display:grid;grid-template-columns:1fr 1fr;gap:12px">+<a href="https://wiki.adom.inc/adom/ams-ams1117" style="display:block;background:var(--surface);border:1px solid rgba(0,184,177,.34);border-radius:10px;padding:14px 16px;text-decoration:none">+  <div style="font-size:12px;font-weight:800;letter-spacing:.1em;color:#00e6dc;text-transform:uppercase">The original</div>+  <div style="font-size:15.5px;font-weight:700;color:var(--text);margin-top:6px">1 A Low-Dropout Regulator AMS &mdash; AMS1117</div>+  <div style="font-size:13px;color:var(--text-2);margin-top:5px">Advanced Monolithic Systems &middot; 1.5&ndash;5.0 V incl. <b>2.85 V</b> &middot; SOT-223 / TO-252 / <b>SO-8</b></div></a>+<a href="https://wiki.adom.inc/adom/umw-ams1117" style="display:block;background:var(--surface);border:1px solid rgba(140,107,247,.34);border-radius:10px;padding:14px 16px;text-decoration:none">+  <div style="font-size:12px;font-weight:800;letter-spacing:.1em;color:#a98bf9;text-transform:uppercase">Second source</div>+  <div style="font-size:15.5px;font-weight:700;color:var(--text);margin-top:6px">1 A Low-Dropout Regulator UMW &mdash; AMS1117</div>+  <div style="font-size:13px;color:var(--text-2);margin-top:5px">UMW / Youtai Semiconductor &middot; <b>1.2 V</b>&ndash;5.0 V &middot; SOT-223 / TO-252 / <b>SOT-89</b></div></a>+</div>+<p style="margin:12px 0 0;font-size:13.5px;color:var(--text-2)"><b>Check your BOM before picking one.</b> If it does not name a manufacturer, design to the tighter of the two sets of limits. The content below is kept for reference and is no longer maintained.</p>+</div>+ <div class=ident><h1>AMS1117</h1><span class=mfr>Advanced Monolithic Systems &middot; UMW</span><span class=badge>1 A LDO</span></div> <p class=oneline>Three-terminal <b>1 A low-dropout linear voltage regulator</b>, in seven fixed voltages across its two manufacturers (1.2 / 1.5 / 1.8 / 2.5 / 2.85 / 3.3 / 5.0 V) or an adjustable version set by two resistors around a 1.25 V reference. Operates down to <b>1 V input-to-output differential</b> (1.3 V max dropout at 0.8 A), with on-chip trimming to 1.5 %, internal current limit and thermal shutdown. Pin-compatible with older three-terminal SCSI regulators. Offered in SOT-223, TO-252 (DPAK) and 8-lead SOIC.</p> <div class=metarow>