AP1084_10 Datasheet, PDF (1/11 Pages) Diodes Incorporated – 5A LOW DROPOUT POSITIVE ADJUSTABLE

AP1084
5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Features
• 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)
General Description
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
5V
C1
100uF
V_in
V_out
GND
Tab is V_out
3.3V/5A
C2
100uF
Adjustable Regulator
5V
C1
100uF
V_in
V_out
2.5V/5A
Adj
R1 121Ω
R2 121Ω
C2
100uF
Tab is V_out
Note: V_O = V_REF∗ (1+ ^R2 )
R₁
AP1084 Rev. 9
DS31070
1 of 11
www.diodes.com
JANUARY 2010
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