AP1501
150kHz, 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%
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)
General Description
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
Blank: Adjustable
33: 3.3V
50: 5.0V
12: 12V
Package
K5: TO263-5
T5: TO220-5
T5R: TO220-5 (R)
Lead Free
L: Lead Free
G: Green
Packing
U: Tube
13: Tape & Reel
Device
(Note 4)
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.
Package
Voltage
code
12
33
50
ADJ
12
33
50
ADJ
K5
K5
K5
K5
T5R
T5R
T5R
T5R
Package
(Note 5)
TO263-5
TO263-5
TO263-5
TO263-5
TO220-5(R)
TO220-5(R)
TO220-5(R)
TO220-5(R)
Lead Free/
Green
Green
Green
Green
Green
Green
Green
Green
Green
Quantity
800
800
800
800
50
50
50
50
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
5.
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 <900ppm bromine, <900ppm chlorine (<1500ppm total Br +
Cl) and <1000ppm antimony compounds.
All AP1501-XXK5L variants are End of Life the closest alternative is the AP1501-XXK5G-13.
All AP1501-XXT5L (TO220-5/R) variants are End of Life without any alternative.
All Tubed versions of the AP1501-XXK5G-U are End of Life; closest alternative is the AP1501-XXK5G-13 (tape and reel).
All AP1501-XXT5G-U (TO220-5) variants are Not Recommended for New Design (NRND) without any alternative.
For packaging details, go to our website at:
https://www.diodes.com/design/support/packaging/diodes-packaging/diodes-package-outlines-and-pad-layouts/.
1 of 13
www.diodes.com
November 2017
© Diodes Incorporated
AP1501
Document number: DS31014 Rev. 12 - 2
AP1501
150kHz, 3A PWM Buck DC/DC Converter
Recommended Operating Conditions
Symbol
V
OP
T
A
Operating Voltage
Operating Ambient Temperature
Parameter
Rating
4.5 to 40
-20 to +85
Units
V
o
C
Electrical Characteristics
(All Output Voltage Versions)
Unless otherwise specified, V
IN
= 12V for 3.3V, 5V, adjustable version and V
IN
= 24V for the 12V version. I
LOAD
= 0.5A
Specifications with
boldface type
are for full operating temperature range, the other type are for T
J
= +25º
C.
Symbol
I
FB
F
OSC
V
SAT
DC
I
CL
Parameter
Feedback Bias Current
Oscillator Frequency
Saturation Voltage
Max. Duty Cycle(ON)
Min. Duty cycle(OFF)
Current Limit
Output
Leakage
Output = -1 Current
Quiescent Current
Standby Quiescent
Current
Output = 0
Conditions
V
FB
= 1.3V
(Adjustable version only)
Min
Typ.
40
127
110
I
OUT
= 3A
No outside circuit
V
FB
= 0V force driver on
V
FB
= 0V force driver on
V
FB
= 12V force driver off
Peak current
no outside circuit
V
FB
= 0V force driver on
No outside circuit
V
FB
= 12V force driver off (Note 6)
V
IN
= 40V
V
FB
= 12V force driver off
ON/OFF pin = 5V
V
IN
= 40V
Low (Regulator ON)
150
Max
60
100
173
173
1.4
1.5
Unit
nA
kHz
V
%
1.3
100
0
5.5
3.6
4.0
6.5
200
2
5
150
1.3
15
0.02
37
31
6
o
A
A
mA
mA
A
V
I
L
I
Q
I
STBY
V
IL
V
IH
I
H
I
L
θ
JA
60
10
250
350
0.6
ON/OFF pin Logic Input
Threshold Voltage
High (regulator OFF)
ON/OFF Pin Logic
Input Current
ON/OFF Pin Input
Current
Thermal Resistance
unction to Ambient
V
LOGIC
= 2.5V (OFF)
V
LOGIC
= 0.5V (ON)
TO263-5 (Note 7)
TO220-5(R) (Note 7)
TO263-5 (Note 7)
TO220-5(R) (Note 7)
2.0
25
5
o
A
C/W
θ
JC
Thermal Resistance
Junction to Case
C/W
5
Notes:
6. Feedback pin removed from output and connected to 0V to force the output transistor switch ON. Feedback pin removed from output and
connected to 12V for the 3.3V, 5V, and the ADJ. version, and 15V for the 12V version, to force the output transistor switch OFF.
2
7. Test condition: Device mounted with copper area of approximately 3 in ,1oz, no air flow.
AP1501
Document number: DS31014 Rev. 12 - 2
4 of 13
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November 2017
© Diodes Incorporated
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