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AP1117 Datasheet

1A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR

No Preview Available !

NOT RECOMMENDED FOR NEW DESIGN
USE AZ1117C/E
AP1117/AP1117I
1A DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR
Description
AP1117 is a low dropout positive adjustable or fixed-mode regulator
with 1A output current capability. The product is voltage specifically
designed to provide well-regulated supply for low IC applications such
as high-speed bus termination and low current 3.3V logic supply.
AP1117 is also well suited for other applications such as VGA cards.
AP1117 is guaranteed to have lower than 1.4V dropout at full load
current making it ideal to provide well-regulated outputs of 1.25 to 5.0
with 6.4V to 18V input supply. AP1117 is available both in commercial
temperature grade (AP1117) and in industrial temperature range
(AP1117I) (SOT223).
Pin Assignments
SOT223
( Top View )
3 VIN
2 VOUT
1 Adj (GND)
Tab is VOUT
Features
1.4V Maximum Dropout at Full Load Current
Fast Transient Response
Output Current Limiting
Built-in Thermal Shutdown
Good Noise Rejection
3-Terminal Adjustable or Fixed 1.5V, 1.8V,2.5V, 3.3V, 5.0V
Operating Junction Temperature range
0°C ≤ TJ ≤ +125°C (All packages)
-20°C ≤ TJ ≤ +125°C (see ordering information)
-40°C ≤ TJ ≤ +125°C (see ordering information)
Lead-Free Packages: SOT223,
Totally Lead-Free; RoHS Compliant (Notes 1 & 2)
SOT223,: Available in “Green” Molding Compound (No Br, Sb)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
PC Peripheral
Communication
Consumer Equipment
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen and Antimony free, "Green"
and Lead-Free.
3. Halogen and Antimony free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
AP1117/AP1117I
Document number: DS31009 Rev. 24 - 3
1 of 10
www.diodes.com
March 2015
© Diodes Incorporated


Diodes Semiconductor Electronic Components Datasheet

AP1117 Datasheet

1A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR

No Preview Available !

NOT RECOMMENDED FOR NEW DESIGN
USE AZ1117C/E
AP1117/AP1117I
5V
C1
10µF
VIN
VOUT
GND
Tab is VOUT
3.3V/1A
C2
22µF
( 5V/3.3V fixed output )
5V
C1
10µF
VIN
VOUT
Adj
Tab is VOUT
R1
121Ω
R2
121Ω
V o 2.5V/1A
C2
22µF
( 5V/2.5V ADJ output )
Note:
Vo
VREF
(1
R2 )
R1
Pin Descriptions
Pin Number
1
2
I/O
I
O
3I
Pin Name
Adj (GND)
VOUT
VIN
Function
A resistor divider from this pin to the VOUT pin and ground sets the output voltage (Ground only for
Fixed-Mode).
The output of the regulator. A minimum of 4.7µF capacitor (0.15Ω ≤ ESR 0.5Ω) must be connected
from this pin to ground to insure stability.
The input pin of regulator. Typically a large storage capacitor is connected from this pin to ground to
insure that the input voltage does not sag below the minimum dropout voltage during the load
transient response. This pin must always be 1.3V higher than VOUT in order for the device to regulate
properly. A minimum of 4.7µF capacitor (0.15Ω ≤ ESR 0.5Ω) must be connected from this pin to
ground to insure stability.
Functional Block Diagram
VIN 3
Thermal
Shutdown
2 VOUT
+
+
+
1.25V
CURRENT
LIMIT
+
1
GND
(FIXED)
1 Adj
Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.)
Symbol
Parameter
AP1117/AP1117I
Document number: DS31009 Rev. 24 - 3
Rating
2 of 10
www.diodes.com
Unit
March 2015
© Diodes Incorporated


Part Number AP1117
Description 1A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR
Maker Diodes Incorporated
Total Page 10 Pages
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