Preliminary Datasheet
150kHz 3A PWM BUCK DC-DC CONVERTER
General Description
The AP3001 series of regulators are fixed frequency
PWM buck (step-down) DC/DC converter, capable of
driving a 3A load with excellent line and load regula-
tion. These regulators are simple to use and include
internal frequency compensation and a fixed frequency
oscillator, so that a system adopting AP3001 requires a
minimum number of external components to work.
These ICs are available in TO-220-5, TO-220B-5 and
TO-263-5 packages.
AP3001
Features
·
·
·
·
·
·
·
3.3V, 5V Fixed and Adjustable Output Versions
Guaranteed 3A Output Load Current
150kHz Fixed Frequency Internal Oscillator
Excellent Line and Load Regulation
TTL Shutdown Capability
Low Power Standby Mode, I
Q
Typically 80
µ
A
Built-in Current Limit Protection and Thermal
Shutdown Circuit
Applications
·
·
·
·
LCD Monitor and LCD TV
On-Card DC-DC Converter
DVD Recorder
PDP
TO-220-5
TO-220B-5
TO-263-5
Figure 1. Package Types of AP3001
Apr. 2007 Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
150kHz 3A PWM BUCK DC-DC CONVERTER
Pin Configuration
T/TB Package
(TO-220-5/TO-220B-5)
S Package
(TO-263-5)
AP3001
5
4
3
2
1
ON/OFF
FEEDBACK
GND
OUTPUT
V
IN
5
4
3
2
1
ON/OFF
FEEDBACK
GND
OUTPUT
V
IN
Figure 2. Pin Configuration of AP3001 (Top View)
Pin Description
Pin Number
1
2
3
4
Pin Name
V
IN
OUTPUT
GND
FEEDBACK
Unregulated input voltage
Switch driver output
Ground
Feedback pin. For fixed version, connect it to system output. For adjustable version,
connect it with an external resistor divider to program the system output voltage
The TTL logic compatible input to control the regulator on or off
Function
5
ON/OFF
Apr. 2007 Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
150kHz 3A PWM BUCK DC-DC CONVERTER
Functional Block Diagram
ON/OFF
5
1
1.235V
REFERENCE
2.5V
REGULATOR
220
mV
START UP
200
mV
AP3001
V
IN
+
Bias
Current
2.5V
COMP
Frequency Shift
150kHz
OSC
_
_
COMP
+
FEEDBACK
4
1:100
R2
_
EA
+
_
COMP
LATCH
DRIVER
&
INV
2
THERMAL
SHUTDOWN
3
+
R1
For 3.3V
5V
ADJ
R1=2.49k R2=4.18k
R1=2.49k R2=7.57k
R1=Open R2=0
OUTPUT
GND
Figure 3. Functional Block Diagram of AP3001
Apr. 2007 Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
150kHz 3A PWM BUCK DC-DC CONVERTER
Ordering Information
AP3001
-
E1: Lead Free
Blank: Tin Lead
TR: Tape and Reel
Blank: Tube
Package
T: TO-220-5
TB: TO-220B-5
S: TO-263-5
ADJ: Adjustable Output
3.3: Fixed Output 3.3V
5.0: Fixed Output 5.0V
AP3001
Circuit Type
Package
Temperature
Range
Part Number
Tin Lead
AP3001T-ADJ
Lead Free
AP3001T-ADJE1
AP3001T-3.3E1
AP3001T-5.0E1
AP3001TB-ADJE1
AP3001TB-3.3E1
AP3001TB-5.0E1
AP3001S-ADJE1
AP3001S-ADJTRE1
AP3001S-3.3E1
AP3001S-3.3TRE1
AP3001S-5.0E1
AP3001S-5.0TRE1
Tin Lead
AP3001T-ADJ
AP3001T-3.3
AP3001T-5.0
Marking ID
Lead Free
AP3001T-ADJE1
AP3001T-3.3E1
AP3001T-5.0E1
AP3001TB-ADJE1
AP3001TB-3.3E1
AP3001TB-5.0E1
AP3001S-ADJE1
AP3001S-ADJE1
AP3001S-3.3E1
AP3001S-3.3E1
AP3001S-5.0E1
AP3001S-5.0E1
Packing
Type
Tube
Tube
Tube
Tube
Tube
Tube
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
TO-220-5
-40 to 85
o
C
AP3001T-3.3
AP3001T-5.0
AP3001TB-ADJ
AP3001TB-ADJ
AP3001TB-3.3
AP3001TB-5.0
AP3001S-ADJ
AP3001S-ADJ
AP3001S-3.3
AP3001S-3.3
AP3001S-5.0
AP3001S-5.0
TO-220B-5
-40 to 85
o
C
AP3001TB-3.3
AP3001TB-5.0
AP3001S-ADJ
AP3001S-ADJTR
TO-263-5
-40 to 85
o
C
AP3001S-3.3
AP3001S-3.3TR
AP3001S-5.0
AP3001S-5.0TR
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Apr. 2007 Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
150kHz 3A PWM BUCK DC-DC CONVERTER
Absolute Maximum Ratings (Note 1)
Parameter
Maximum Supply Voltage
ON/OFF Pin Input Voltage
Feedback Pin Voltage
Thermal Resistance (For
TO-220-5, TO-220B-5 and
R
θJA
P
D
T
J
T
LEAD
T
STG
Symbol
Value
40
-0.3 to 25
-0.3 to 25
60
Unit
V
V
V
o
C/W
AP3001
TO-263-5 Packages)
Power Dissipation (T
A
=25
o
C, No Heat Sink)
Operating Junction Temperature
Lead Temperature (Soldering, 10sec)
Storage Temperature Range
ESD ( Machine Model)
ESD ( Human Body Model)
2.08
150
260
-65 to 150
250
2500
W
o
C
o
C
o
C
V
V
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Max-
imum Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Symbol
AP3001-3.3V
Supply Voltage (Note 2)
V
IN
AP3001-5.0V
AP3001-ADJ
(V
OUT
=12V)
Operating Junction Temperature
T
J
Min
4.75
7.5
16
-40
Max
10
18
28
125
o
C
Unit
V
Note 2: For detailed recommended input supply voltage range, please refer to the test "conditions" for each output
voltage version. For ADJ version, the recommended supply voltage dependes on the needed output voltage, the
experienced formula is 1.5*V
OUT
≤V
IN
≤2.5*V
OUT
and 4.5V≤V
IN
≤36V
.
Apr. 2007 Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
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