AP1512A-K5L-13 Datasheet, PDF (1/12 Pages) Diodes Incorporated – 50KHz, 2A/3A PWM BUCK DC/DC CONVERTER

AP1512/A
50KHz, 2A/3A PWM BUCK DC/DC CONVERTER
Features
• Output voltage: 3.3V, 5V, 12V and adjustable output
version
• Adjustable version output voltage range, 1.23V to
37V+4%
• 50KHz +15% fixed switching frequency
• Voltage mode non-synchronous PWM control
• Thermal-shutdown and current-limit protection
• ON/OFF shutdown control input
• Operating voltage can be up to 60V
• Output load current: 2A (for AP1512)
3A (for AP1512A)
• Low power standby mode
• Built-in switching transistor on chip
• Lead Free Finish/ RoHS Compliant (Note 1)
General Description
The AP1512/A is a monolithic IC designed for use as a
step-down DC/DC converter with the ability of driving a 2A (3A for
AP1512A) load without additional transistor components. The
board space is reduced since AP1512/A requires few external
components. The external shutdown function is controlled by
logic level and can be put into standby mode. The internal
compensation ensures feedback control has good line and load
regulation without external design. Both an integrated Thermal
shutdown and Current Limit function are provided to prevent
damage from exceeding temperature operation and against
exceeding the current operating of the output switch. The
AP1512/A operates at a switching frequency of 50KHz thus
allowing smaller sized filter components than what would be
needed with lower frequency switching regulators. Other features
include a guaranteed +4% tolerance on output voltage under
specified input voltage and output load conditions, and +15%
tolerance on the oscillator frequency. The AP1512/A offers fixed
output voltages of 3.3V, 5V, 12V, plus Adjustable. The package is
available in a standard 5-lead TO263 package.
Applications
• Simple High-efficiency step-down regulator
• On-card switching regulators
• Positive to negative converter
Ordering Information
AP1512 X - XX XX X X
Part Number
Blank : 2A
A : 3A
Output Version
Blank : Adjustable
33 : 3.3V
50 : 5.0V
12 : 12V
Package
K5 : TO263-5L
Lead Free
Packing
L : Lead Free _{-U : Tube}
-13 : Tape & Reel
Device
Package
Code
Packaging
(Note 2)
Tube
Quantity
Part Number
Suffix
13” Tape and Reel
Quantity
Part Number
Suffix
AP1512X-XXK5 Lead-free
K5
TO263-5L
50
-U
800/Tape & Reel
-13
Notes:
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes.
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.
AP1512/A Rev. 4
1 of 12
www.diodes.com
MAY 2008
© Diodes Incorporated