Diodes AP1533 - Manual (Page 2)

AP1533
PWM CONTROL 1.8A STEP-DOWN CONVERTER
AP1533 Rev. 4 2 of 9 JULY 2009
DS31192 www.diodes.com © Diodes Incorporated
Ordering Information
AP 1 5 3 3 S G - 13
Package Packing
S : SOP-8L
Green
13 : Tape & Reel G : Green
Device
Package
Code
Packaging
(Note 2)
13” Tape and Reel
Quantity Part Number Suffix
AP1533SG-13 S SOP-8L 2500/Tape & Reel -13
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.
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf .
Pin Assignments
1
2
3
4
8
7
6
5
FB
Output OCSET
SOP-8L
AP1533
Output
EN V
SS
V
CC
V
SS
( Top View )
Pin Descriptions
Pin Name Pin No. Description
FB 1 Feedback pin
EN 2
Power-off pin
H: Normal operation
(Step-down operation)
L: Step-down operation stopped
(All circuits deactivated)
OCSET 3 Add an external resistor to set max output current
V
CC
4 IC power supply pin
Output 5, 6
Switch Pin. Connect external inductor/diode here. Minimize trace area at this pin
to reduce EMI
V
SS
7, 8 GND Pin