Diodes AP2181D/AP2191D - Manual (Page 2)

AP2181D/AP2191D
Document number: DS32251 Rev. 3 - 2
2 of 18
www.diodes.com
March 2013
© Diodes Incorporated
AP2181D/AP2191D
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
AP2191D Enable Active High
Available Options
Part Number Channel
Enable Pin
(EN)
Current Limit
(Typical)
Recommended Maximum
Continuous Load Current
AP2181D 1 Active Low 2.1A 1.5A
AP2191D 1 Active High 2.1A 1.5A
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 be tied together externally)
EN 4 4 4 3 Enable input, active low (AP2181D) or active high (AP2191D)
FLG 5 5 3 4
Over-current and over-temperature fault report; open-drain flag is active low when
triggered
OUT 6, 7 6, 7 1 5, 6 Voltage output pin (all OUT pins must be tied 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 conduction path.