Ap7217 – Diodes AP7217 User Manual
Page 8
AP7217
500mA CMOS LDO
AP7217
Document number: DS31292 Rev. 4 - 2
8 of 10
April 2010
© Diodes Incorporated
Application Note
Short circuit protection
When VRout pin is shorted to GND or VRout voltage is less than 200mV, short circuit protection will be triggered
and clamp the output current to approximately 50mA.
VD
OUT
(reset output)
---Open-Drain Active-Low reset output---
In general, VD
OUT
is pulled up by a resistor (100Kohm) to V
IN
. The AP7217 microprocess (uP) supervisory
circuitry asserts a guaranteed logic-low reset during power-up and power-down. Reset is asserted asserts when
V
IN
is below the reset threshold and remain asserted for at least t
RP
after V
IN
rises above the reset threshold.
As long as V
IN
is lower than the reset threshold, VD
OUT
remains at logic "0". When V
IN
become higher than V
TH
, a
logic "1" is asserted after a time delay defined by t
RP
.
Ordering Information
AP 7217 - 33 S G - 13
S : SOP-8L
Output voltage
Package
33 : 3.3V
Packing
Green
G : Green
13 : Tape & Reel
Device
Package
Code
Packaging
(Note 3)
13” Tape and Reel
Quantity
Part Number Suffix
AP7217-33SG-13
S
SOP-8L
2500/Tape & Reel
-13
Notes: 3. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
Marking Information
( Top View )
7217-33
YY WW X X
Logo
Part Number
5
8
4
1
WW : Week : 01~52; 52
YY : Year : 08, 09,10~
G : Green
X : Internal Code
represents 52 and 53 week