Diodes AP1086 - Manual

AP1086
1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
AP1086
Document number: DS31028 Rev. 6 - 2
1 of 10
www.diodes.com
June 2010
© Diodes Incorporated
Description
AP1086 is a low dropout positive adjustable or fixed-mode
regulator with 1.5A 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. AP1086 is also well suited
for other applications such as VGA cards. AP1086 is
guaranteed to have lower than 1.4V dropout at full load
current making it ideal to provide well-regulated outputs of
1.25V to 5.0V with 4.7 to 12V input supply by different output
voltage.
Features
• 3-Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V,3.3V,
5.0V
• 1.4V Maximum Dropout at Full Load Current
• Fast Transient Response
• Built-in Thermal Shutdown
• Output Current Limiting
• Lead Free Packages: TO252-3L, TO263-3L, TO220-3L
• TO252-3L, TO263-3L, and TO220-3L: Available in
“Green” Molding Compound (No Br, Sb)
• Lead Free Finish/ RoHS Compliant (Note 1)
Pin Assignments
3
2
1
V
IN
V
OUT
Adj (GND)
(Top View)
Tab is V
OUT
TO252-3L
3
2
1
V
IN
V
OUT
Tab is V
OUT
(Top View)
Adj (GND)
TO263-3L
Tab is V
OUT
V
OUT
Adj (GND)
(Top View)
V
IN
1
2
3
TO220-3L
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
Typical Application Circuit
5V to 3.3V Fixed Mode Regulator Adjustable Regulator
C2
100uF
5V
3.3V/1.5A
Tab is Vout
Vin
Vout
GND
C1
100uF
R1
121
R2
121
C2
100uF
5V
2.5V/1.5A
Tab is Vout
Vin
Vout
C1
100uF
Adj
V
OUT
=V
ref
(1+R2/R1)
Ω
Ω
×
)
1
2
RE
F
o
R
R (
1
V V
+ ∗ =
Note: