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PDF AP3003 Data sheet ( Hoja de datos )
| Número de pieza | AP3003 | |
| Descripción | BUCK DC-DC CONVERTER | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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Data Sheet
150kHz 3A BUCK DC-DC CONVERTER
General Description
Features
AP3003
The AP3003 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 include internal frequency com-
pensation and a fixed frequency oscillator so that they
are easy to use. A system adopting AP3003 requires a
minimum number of external components to work.
A standard series of inductors, optimized for use with
the AP3003 series, are available from several manu-
facturers. This feature greatly simplifies the design of
switch-mode power supplies.
These ICs are available in TO-220-5 and TO-263-5
packages.
· 3.3V, 5V, 12V Fixed (±4% Tolerance) and Adjust-
able (±3% Tolerance) Output Versions
· Guaranteed 3A Output Load Current
· 150kHz Fixed Frequency Internal Oscillator
· Input Voltage Range up to 32V
· Requires only 4 external components
· High Efficiency up to 90%
· Excellent Line and Load Regulation
· TTL Shutdown Capability
· Low Power Standby Mode, IQ Typically 80µA
· 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-263-5
Aug. 2008 Rev. 1. 2
Figure 1. Package Types of AP3003
BCD Semiconductor Manufacturing Limited
1
1 page  
Data Sheet
150kHz 3A BUCK DC-DC CONVERTER
Absolute Maximum Ratings (Note 1)
AP3003
Parameter
Symbol
Value
Unit
Input Voltage
VIN 40
V
ON/OFF Pin Voltage
VON/OFF
40
V
Feedback Pin Voltage
VFB 40
V
Operating Junction Temperature
TJ 150 oC
Thermal Resistance
(Junction to Ambient, No Heatsink)
TO-220-5
TO-263-5
RθJA
60
oC/W
Lead Temperature (Soldering, 10sec)
TLEAD
260
oC
Storage Temperature Range
TSTG
-65 to 150
oC
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
Maximum Input Voltage (Note 2)
Operating Junction Temperature
3.3V
5.0V
12V
ADJ (VOUT=3.2V)
ADJ (VOUT=2.5V)
Symbol
VIN
TJ
Value
32
32
32
32
25
-40 to 125
Unit
V
oC
Note 2: For ADJ version, the recommended supply voltage depends on the needed output voltage.
Aug. 2008 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
5
5 Page 
150kHz 3A BUCK DC-DC CONVERTER
Typical Performance Characteristics (Continued)
Data Sheet
AP3003
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
-40
-20
OFF
ON
0 20 40 60 80
Junction Temperature (OC)
V =12V
IN
100 120
8
7
6
5
4
3
2
1
V =32V, T =25OC
IN J
0
0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0
ON/OFF Pin Voltage (V)
Figure 16. On/Off Threshold Voltage
vs. Junction Temperature
Figure 17. On/Off Pin Current vs. On/Off Pin Voltage
160
156
152
148
144
140
136
132
128
124
120
-40
-20
0 20 40 60 80
Junction Temperature (OC)
100 120
Figure 18. Switching Frequency vs. Junction Temperature
Aug. 2008 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AP3003.PDF ] | |
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