AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
AP1117 Rev. 19 1 of 12 JANUARY 2010
DS31009
www.diodes.com © Diodes Incorporated
• 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
• Lead Free Packages: SOT223-3L, TO252-3L,
SOT89-3L, TO263-3L and TO220-3L
• SOT223-3L, TO252-3L, SOT89-3L, TO263-3L and
TO220-3L: Available in “Green” Molding Compound
(No Br, Sb)
• Lead Free Finish/RoHS Compliant (Note 1)
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 in commercial temperature
grade.
• PC Peripheral
• Communication
Typical Application Circuit
C2
22uF
5V
3.3V/1A
Tab is V
OUT
VIN
VOUT
GND
C1
10uF
( 5V/3.3V fixed output )
R1
121
R2
121
C2
22uF
5V
2.5V/1A
Tab is V
OUT
VIN
VOUT
Adj
C1
10uF
o
V
( 5V/2.5V ADJ output )
)
R
R
(1 VV
1
2
REFo
+×=
Note:
Ω
Ω
Features
General Description
Applications
