1A Adjustable/Fixed Low Dropout Linear Regulator
General Description
Key Features
The AMS1117-ADJ and AMS1117-1.2,-1.5,-1.8,-2.5,-2.85,
-3.3 and-5 are low dropout three-terminal regulators with
1A output current capability. These devices have been
optimized for low voltage where transient response and
minimum input voltage are critical. The 2.85V version is
designed specifically to be used in Active Terminators for
SCSI bus.
- Low dropout voltage
- Load regulation: 0.2% typical
- Optimized for Low Voltage
- On-chip thermal limiting
- Standard SOT-223 and TO-252 packages
- Three-terminal adjustable or fixed low dropout
1.2V,1.5V,1.8V, 2.5V, 2.85V, 3.3V, 5V. Regulators
On-chip thermal limiting provides protection against any
combination of overload and ambient temperatures that
would create excessive junction temperatures.
Applications
- Active SCSI terminators
- High efficiency linear regulators
- Post regulators for switching supplies
- Battery chargers
- 12V to 5V linear regulators
-Motherboard clock supplies
Unlike PNP type regulators where up to 10% of the output
current is wasted as quiescent current, the quiescent cur-
rent of the AMS1117 flows into the load, increasing effi-
ciency.
The AMS1117 series regulators are available in the indus-
try-standard SOT-223 and TO-252 power packages.
Typical Application
Figure 1. Typical Applications of AMS1117
Notice: The distance between Vout pin and Capacitor should not exceed 4cm for excellent performance
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