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PDF AX3001 Data sheet ( Hoja de datos )
| Número de pieza | AX3001 | |
| Descripción | 2A PWM Buck DC/DC Converter | |
| Fabricantes | AXElite | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AX3001 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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AX3001
150KHz, 2A PWM Buck DC/DC Converter
GENERAL DESCRIPTION
The AX3001 series are monolithic IC designed for a step-down DC/DC converter, and
own the ability of driving a 2A 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 AX3001 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 standard 8-lead SOP
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: 2A.
- SOP-8L Pb-Free packages.
- Low power standby mode.
- Built-in switching transistor on chip.
1/11
1 page  
AX3001
ELECTRICAL CHARACTERISTICS (CONTINUED)
Version
Characteristics Symbol Conditions Min Typ Max Units
AX3001-ADJ Output Feedback voltage
ILOAD =0.2A
VFB VOUT programmed
for 3.3V
1.193 1.23 1.267 V
Efficiency
η VCC = 12V, ILOAD=2A
79
%
AX3001-3.3V Output voltage
VOUT ILOAD =0.2A
3.20 3.30 3.40 V
Efficiency
η VCC = 12V, ILOAD=2A
80
%
AX3001-5.0V Output voltage
VOUT ILOAD =0.2A
4.85 5.00 5.15 V
Efficiency
η VCC = 12V, ILOAD=2A
84
%
Output voltage
VOUT ILOAD =0.2A
11.64 12.0 12.36 V
AX3001-12V
Efficiency
η
VCC = 15V,
ILOAD = 2A
90 %
APPLICATION CIRCUIT
(1) Adjustable Output Voltage Version
VIN=12V
C1
470uF
C2
0.1uF
U1
1 Vcc
2 SW
3 FB
4 EN
Vss 8
Vss 7
Vss 6
Vss 5
ON/OFF AX3001
L1
1
2
33uH
D1
B340A
Vout=5.0V/2A
R1
4.7K
C3
470uF
C6
0.1uF
R2
1.5K
VOUT = VFB
(1
+
R1
R2
)
VFB = 1.23V
R2 = 0.47K ~ 2.6K
Table 1 Resistor select for output voltage setting
VOUT
R2
R1
5V
1.5K 4.7K
1.8K 5.6K
3.3V
1.5K
1.8K
2.5K
3.0K
2.5V 1.8K 1.8K
1.8V 1.8K 0.82K
5/11
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.2.0 Jul.11, 2011
5 Page 
PACKAGE OUTLINES
AX3001
b
D
7 (4X)
L
DETAIL A
θ
e
y
Symbol
A
A1
A2
C
D
E
H
L
b
e
y
θ
Dimensions in Millimeters
Min. Nom. Max.
- - 1.75
0.1 - 0.25
1.25 -
-
0.1 0.2 0.25
4.7 4.9
5.1
3.7 3.9
4.1
5.8 6
6.2
0.4 - 1.27
0.31 0.41
0.51
1.27 BSC
- - 0.1
0O -
8O
Mold flash shall not exceed 0.25mm per side
JEDEC outline: MS-012 AA
DETAIL A
Dimensions in Inches
Min. Nom. Max.
- - 0.069
0.04 - 0.1
0.049
-
-
0.0075 0.008 0.01
0.185
0.193
0.2
0.146
0.154 0.161
0.228
0.236 0.244
0.015 - 0.05
0.012
0.016
0.02
0.050 BSC
- - 0.004
0O - 8O
11/11
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.2.0 Jul.11, 2011
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AX3001.PDF ] | |
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