Diodes AP2552/ AP2553/ AP2552A/ AP2553A - Manual (Page 2)

AP2552/AP2553/AP2552A/AP2553A
Document number: DS35404 Rev. 8 - 2
2 of 16
www.diodes.com
February 2014
© Diodes Incorporated
AP2552/ AP2553/ AP2552A/ AP2553A
Typical Applications Circuit
120µF Output Capacitance is a Requirement of USB
Available Options
Part Number Channel Enable Pin (EN)
Recommended Maximum
Continuous Load Current (A)
Current-Limit
Protection
Package
AP2552 1 Active Low
2.1 Constant-Current
U-DFN2020-6
SOT26 AP2553 1 Active High
AP2552A 1 Active Low
2.1 Latch-Off
U-DFN2020-6
SOT26 AP2553A 1 Active High
Pin Descriptions
Pin
Name
Pin Number
I/O Function
AP2552W6-7 AP2553W6-7 AP2552FDC-7 AP2553FDC-7
IN 1 1 6 6 I
Input, connect a 0.1µF or greater ceramic capacitor from
IN to GND as close to IC as possible.
GND 2 2 5 5 — Ground, connect to external exposed pad.
EN 3 — 4 — I Enable input, logic low turns on power switch.
EN — 3 — 4 I Enable input, logic high turns on power switch.
FAULT 4 4 3 3 O
Active-low open-drain output, asserted during over-
current, over-temperature, or reverse-voltage conditions.
ILIM 5 5 2 2 O
Use external resistor to set current-limit threshold;
recommended 10kΩ≦RLIM≦232kΩ.
OUT 6 6 1 1 O Output
Exposed
Pad
— — Pad Pad —
No internal connection; recommend to connect to GND
externally for improved power dissipation. . It should not
be used as electrical ground conduction path.