AP1501
150kHz, 3A PWM Buck DC/DC Converter
Features
General Description
Output voltage: 3.3V, 5V, 12V and adjustable output
version
Adjustable version output voltage range, 1.23V to 37V+4%
150kHz +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 40V
Output load current: 3A
Low power standby mode
Built-in switching transistor on chip
TO263-5 and TO220-5(R) packages totally Lead-Free &
Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
The AP1501 is a fully integrated step-down DC/DC converter,
with the ability to drive 3A load without the need of additional
driver components. The AP1501 operates at a switching
frequency of 150kHz enabling the use of small size filter
components. As a result, board space is reduced and BOM costs
are lowered.
The AP1501 has integrated the shutdown function that allows
standby mode to be activated via an external logic signal input.
The internal compensation facilitates feedback control for line
and load regulation without the need of an external circuitry. The
AP1501 has a built-in Thermal shutdown and Current Limit
function to prevent damage from high operating temperature and
high current operating to the output switch.
Additional features include a guaranteed +/- 4% tolerance on the
output voltage under specified input and output load conditions,
and +/- 15% on oscillator frequency. The AP1501 offers both
fixed and a Adjustable output voltages. For fixed outputs the
AP1501 supports 3.3V, 5.0V and 12V. The package options
available are standard 5-lead TO263 and TO220(R) packages.
Applications
Simple High-efficiency step-down regulator
On-card switching regulators
Positive to negative converter
Ordering Information
AP1501 - XX XXX X - X
Output Version
Package
Blank: Adjustable
AP1501-12K5G-13
AP1501-33K5G-13
AP1501-50K5G-13
AP1501-K5G-13
AP1501-12T5RG-U
AP1501-33T5RG-U
AP1501-50T5RG-U
AP1501-T5RG-U
Notes:
1.
2.
3.
4.
5.
L: Lead Free
G: Green
K5: TO263-5
T5: TO220-5
T5R: TO220-5 (R)
33: 3.3V
50: 5.0V
12: 12V
Device
(Note 4)
Lead Free
Voltage
Package
code
Package
(Note 5)
Lead Free/
Green
Quantity
12
33
50
ADJ
12
33
50
ADJ
K5
K5
K5
K5
T5R
T5R
T5R
T5R
TO263-5
TO263-5
TO263-5
TO263-5
TO220-5(R)
TO220-5(R)
TO220-5(R)
TO220-5(R)
Green
Green
Green
Green
Green
Green
Green
Green
800
800
800
800
50
50
50
50
Packing
U: Tube
13: Tape & Reel
Part Number
Suffix
13’’Tape
Tube
and reel
NA
-13
NA
-13
NA
-13
NA
-13
-U
NA
-U
NA
-U
NA
-U
NA
Status
(Note 4)
In production
In production
In production
In production
End of Life
End of Life
NRND
NRND
Alternative
None
None
None
None
No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and
Antimony-free,"Green" and Lead-free.
Halogen- and Antimony-free "Green” products are defined as those which contain
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