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PDF AX3003 Data sheet ( Hoja de datos )
| Número de pieza | AX3003 | |
| Descripción | 3A PWM Buck DC/DC Converter | |
| Fabricantes | Axelite | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AX3003 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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AX3003
150KHz, 3A PWM Buck DC/DC Converter
GENERAL DESCRIPTION
The AX3003 series are monolithic IC designed for a step-down DC/DC converter,
and own the ability of driving a 3A load without additional transistor. It saves board
space. The external shutdown function can be controlled by logic level and then come
into standby mode. The internal compensation makes feedback control having good
line and load regulation without external design. Regarding protected function,
thermal shutdown is to prevent over temperature operating from damage, and current
limit is against over current operating of the output switch. If current limit function
occurs and VFB is down below 0.5V, the switching frequency will be reduced.
The AX3003 series operates at a switching frequency of 150KHz thus allow
smaller sized filter components than what would be needed with lower frequency
switching regulators. The output version included fixed 3.3V, 5V, 12V, and an
adjustable type. The chips are available in a 5-lead TO-252 package.
FEATURES
- Output voltage: 3.3V, 5V, 12V and adjustable output version.
- Adjustable version output voltage range, 1.23V to 19.5V.
- 150KHz fixed switching frequency.
- Voltage mode non-synchronous PWM control.
- Thermal-shutdown and current-limit protection.
- ON/OFF shutdown control input.
- Short Circuit Protect (SCP).
- Operating voltage can be up to 22V.
- Output load current: 3A.
- 5-Lead TO-252 Pb-Free packages.
- Low power standby mode.
- Built-in switching transistor on chip.
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Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.4 Mar.12, 2008
1 page  
150KHz, 3A PWM Buck DC/DC Converter AX3003
Electrical Characteristics (Continued)
version Characteristics Symbol Conditions
Output Feedback
AX3003-ADJ
voltage
Efficiency
Output voltage
AX3003-3.3V
Efficiency
Output voltage
AX3003-5.0V
Efficiency
Output voltage
AX3003-12V
Efficiency
ILOAD =0.2A
V FB VOUT programmed
for 3.3V
η VCC = 12V, ILOAD=3A
V OUT ILOAD =0.2A
η VCC = 12V, ILOAD=3A
V OUT ILOAD =0.2A
η VCC = 12V, ILOAD=3A
V OUT ILOAD =0.2A
η VCC = 15V, ILOAD = 3A
Min Typ
1.193 1.23
74
3.20 3.30
75
4.85 5.00
80
11.64 12.0
89
Max Units
V
1.267
3.40
5.15
12.36
%
V
%
V
%
V
%
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Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.4 Mar.12, 2008
5 Page 
150KHz, 3A PWM Buck DC/DC Converter AX3003
Package Outlines
A
B
5.8
P(TYP.)
b1
b
0.6
1.27
Land Pattern Recommendation (Unit: mm)
L
Symbol
A
B
C
D
P
H
J
K
L
M
b
www.DataSheet4U.com b1
Dimensions In Millimeters
Min.
Nom.
Max.
6.35 6.60 6.85
5.20 5.35 5.50
6.80 7.00 7.30
2.20 2.50 2.80
1.27 REF.
2.20 2.30 2.40
0.45 0.52 0.58
0.00 0.08 0.15
0.90 1.20 1.63
5.40 5.80 6.20
0.50 0.65 0.80
0.40 0.50 0.63
Dimensions In Inches
Min.
0.250
Nom.
0.260
Max.
0.270
0.205 0.211 0.217
0.268 0.276 0.287
0.087 0.098 0.110
0.050 REF.
0.087 0.091 0.094
0.018 0.020 0.023
0.000 0.003 0.006
0.035 0.047 0.064
0.213 0.228 0.244
0.020 0.026 0.031
0.016 0.020 0.025
11/11
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.4 Mar.12, 2008
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AX3003.PDF ] | |
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