User Manual

AP2161D/AP2171D
Document number: DS32250 Rev. 5 - 2
2 of 19
www.diodes.com
March 2013
© Diodes Incorporated
AP2161D/AP2171D
Typical Applications Circuit
0.1uF
IN
GND
EN
OUT
ON
120uF
Power Supply
2.7V to 5.5V
0.1uF
OFF
FLG
Load
10k
10uF
AP2171D Enable Active High
Available Options
Part Number Channel
Enable Pin
(EN)
Current Limit
(Typical)
Recommended Maximum
Continuous Load Current
AP2161D 1 Active Low 1.5A 1A
AP2171D 1 Active High 1.5A 1A
Pin Descriptions
Pin
Name
Pin Number
Functions
SO-8
MSOP-8
MSOP-8EP SOT25 U-DFN2018-6
GND 1 1 2 1 Ground
IN 2, 3 2, 3 5 2 Voltage input pin ( all IN pins must b e tied together ext ernally)
EN 4 4 4 3 Enable inpu t, acti ve low (AP21 61D) or act ive high ( AP2171D)
FLG 5 5 3 4
Over-current and over-temperature fault report; open- drain flag is a ctive low w hen
triggered
OUT 6, 7 6, 7 1 5, 6 Voltage output pin (all OUT p ins must be t ied together externally )
NC 8 8 N/A N/A No internal connection; recommend tie to OUT pins
Exposed tab - Exposed tab - Exposed tab
Exposed pad.
It should be connected to GND and thermal mass for enhanced thermal
impedance.
It should not be used as electrical ground condu ction path.