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PDF ZLDO1117 Data sheet ( Hoja de datos )
| Número de pieza | ZLDO1117 | |
| Descripción | Low Dropout Positive Adjustable | |
| Fabricantes | Diodes | |
| Logotipo |  |
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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
1 of 12
www.diodes.com
June 2009
©Diodes Incorporated
1 page  
www.DataSheet4U.com
10mV
ZLDO1117-2.5V
CIN = 1µF, COUT = 10µF TANT
IPRELOAD = 100mA, Istep = 500mA
0
-10mV
600mA
100mA
ZLDO1117
ZLDO1117-2.5V
CIN = 1µF, COUT = 4.7µF MLCC
IPRELOAD = 100mA, ISTEP = 500mA
10mV
0
-10mV
600mA
100mA
Transient load regulation with 10µF tantalum capacitor Transient load regulation with 4.7µF MLCC capacitor
ZLDO1117 2.5V
CIN = 1µF, COUT = 4.7µF MLCC
ILOAD = 100mA
10
0
5V
4V
10µs/div
Transient line regulation with 4.7µF MLCC capacitor
90
85
80
75 ILOAD = 100mA, VIN - VOUT = 3V
70
65
60
55
50
10
100 1,000
Frequency (Hz)
Ripple rejection
10,000
100,000
Issue 1
5 of 12
www.diodes.com
June 2009
©Diodes Incorporated
5 Page 
www.DataSheet4U.com
Package outlines
SOT223
ZLDO1117
TO252
Issue 1
11 of 12
www.diodes.com
June 2009
©Diodes Incorporated
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ZLDO1117.PDF ] | |
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