ZLDO1117 Datasheet, PDF (1/12 Pages) Diodes Incorporated – 1A Low Dropout Positive Regulator 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5.0V and Adjustable outputs

ZLDO1117
1A Low Dropout Positive Regulator
1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5.0V and Adjustable outputs
Description
ZLDO1117 is a low dropout positive adjustable or fixed-
mode regulator with 1A output current capability.
The ZLDO1117 has a 2% tolerance across the industrial
temperature range and is guaranteed to have lower than
1.2V dropout at full load current making it ideal to provide
well-regulated outputs of 1.2V to 5.0V with input supply
voltages up to 18V.
The ZLDO1117 is ideally suited to provide well-regulated
supplies for low voltage IC applications such as high-
speed bus termination and low current 3.3V logic supply
across the whole industrial temperature range.
Pin Assignments
SOT223
TO252
Features
• 1.2V Maximum Dropout at Full Load Current
• 2% tolerance over temperature, line and load
variations
• Fast Transient Response
• Output Current Limiting
• Built-in Thermal Shutdown
• Good Noise Rejection
• Suitable for use with MLCC capacitors
• -40 to 125°C Junction temperature range
• Available in “Green” Molding Compound (No Br, Sb)
with lead free Finish/RoHS Compliant (Note 1)
Typical Application circuit
1A I/O – 1.8V core regulator
3.3V
ZLDO1117-18
4.7µF
MLCC
1.8V
4.7µF
MLCC
Issue 1
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www.diodes.com
June 2009
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