Diodes AP1084 - Manual

AP1084
5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
AP1084 Rev. 9 1 of 11 JANUARY 2010
DS31070 www.diodes.com © Diodes Incorporated
• 1.4V Maximum Dropout at Full Load Current
• Built-in
Thermal Shutdown
• Output Current Limiting
• Adjustable Output Voltage or Fixed 1.5V, 1.8V, 2.5V,
3.3V, 5.0V
•
Fast Transient Response
• Good Noise Rejection
• Lead Free Packages: TO252-3L, TO263-3L and
TO220-3L
• TO252-3L, TO263-3L and TO220-3L: Available in
“Green” Molding Compound (No Br, Sb)
• Lead Free Finish/RoHS Compliant (Note 1)
AP1084 is a low dropout positive adjustable or fixed-mode
regulator with 5.0A output current capability. The product is
specifically designed to provide well-regulated supply for low
voltage IC applications such as high-speed bus termination and
low current 3.3V logic supply. AP1084 is also well suited for other
applications such as VGA cards. AP1084 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 3.3V with 4.7 to
12V input supply.
Typical Application Circuit
5.0V to 3.3V Fixed Mode Regulator
C2
100uF
5V
3.3V/5A
Tab is V
out
V
in
V
out
GND
C1
100uF
Adjustable Regulator
R1
R2
C2
100uF
5V
2.5V/5A
Tab is V
out
V
in
V
out
Adj
C1
100uF
121
121
Ω
Ω
)
R
1
R
2
(1 V
REF
V
O
+ ∗ =
Note:
Features General Description