AP7217
500mA CMOS LDO
AP7217
Document number: DS31292 Rev. 4 - 2
1 of 10
www.diodes.com
April 2010
© Diodes Incorporated
Description
The AP7217 low-dropout linear regulator operates from a
3.3V to 5.5V supply and delivers a guaranteed 500mA (min)
continuous load current.
The high-accuracy output voltage is preset to an internally
trimmed voltage. An active-low open-drain reset output
remains asserted for at least 20ms (TYP) after output voltage
reaches V
DF
.
The space-saving SOP-8L package is suitable for “pocket”
and hand-held applications.
Features
• Very Low Dropout Voltage
• Low Current Consumption: Typ. 50μA
• Output Voltage: 3.3V
• Guaranteed 500mA (min) Output
• Input Range up to 5.5V
• Current Limiting
• Stable with either electrolytic capacitor or low-ESR MLCC
(multi-layer ceramic capacitor) Low Temperature
Coefficient
• SOP-8L: Available in “Green” Molding Compound
(No Br, Sb)
• Lead Free Finish/ RoHS Compliant (Note 1)
Pin Assignments
1
2
3
4
6
5
EN
SOP-8L
AP7217
( Top View )
VR
OUT
NC
NC
V
IN
GND
NC
VD
OUT
8
7
Applications
• HD/ BlueRay DVD & MP3/4 Players
• Mobile Handsets and Smartphones
• Digital Still Camera
• Hand-Held Computers
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
AP7217
V
IN
VD
OUT
VR
OUT
EN
GND
100K
VD
OUT
U1
4
6
2
8
V
IN
C
IN
1uF
7
C
OUT
1uF
ON
OFF
VR
OUT
