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PDF AX3132 Data sheet ( Hoja de datos )
| Número de pieza | AX3132 | |
| Descripción | PWM Control 2A Step-Down Converter | |
| Fabricantes | AXElite | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AX3132 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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AX3132
PWM Control 2A Step-Down Converter
GENERAL DESCRIPTION
AX3132 consists of step-down switching regulator with PWM control. These devise
include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and
etc.
AX3132 provides low-ripple power, high efficiency, and excellent transient
characteristics. The PWM control circuit is able to the duty ratio linearly form 0 up to 100%.
This converter is build out soft start function that prevents overshoot and inrush current at
startup. An over current protect function and short circuit protect function are built inside,
and when OCP or SCP happens, the operation frequency will be reduced. The operating
frequency is decided by outside resistance. An external compensation is easily to system
stable; the low ESR output capacitor can be used.
With the addition of an internal P-channel Power MOS, a coil, capacitors, and a diode
connected externally, these ICs can function as step-down switching regulators. They serve
as ideal power supply units for portable devices when coupled with the SOP-8L with
exposed pad package, providing such outstanding features as low current consumption.
Since this converter can accommodate an input voltage up to 32V, it is also suitable for the
operation via an AC adapter.
FEATURES
- Input voltage：8V to 32V
- Output voltage：3.3V to 26V
- Duty ratio：0% to 100% PWM control
- Oscillation frequency range is 50K~350KHz by outside resistance setting
- Enable with Soft-Start function
- Current Limit, Short Circuit Protect (SCP) and Thermal Shutdown protection
- Built-in internal SW P-channel MOS.
- SOP-8L-EP Pb-Free package.
1/11
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Oct.20, 2010
1 page  
AX3132
APPLICATION CIRCUIT
EL cap
VIN+8~32V
C5
470uF
C1
1uF
C6
0.1uF
C10 C7
0.1uF 0.1uF
AX3132ES
VCC
SW
VGATE
FB
EN/SS COMP
GND
OSC
R3
R2
C9
L1
1
2
D1
B240
R1
5.6K
R4
1.1K
VOUT = 5V/2A
C2
C3
0.1uF
C4
470uF
R1
VOUT = VFB x (1 +
)
R4
VFB = 0.815V ; R4 suggest 0.8K ~ 3k
COUT ESR Range
30m~80mΩ
80m~300mΩ
EL Capacitor Compensation Table
Frequency (Hz) VIN Range R2 C9 C2
L1
50K
150K
250K
350K
50K
150K
250K
350K
8~32V
100 4n7 3300p 100u
560 4n7 2200p 68u
560 4n7 1000p 33u
1K 6n8 1000p 22u
100 4n7 3300p 100u
560 4n7 1500p 68u
560 4n7 680p 33u
1K 6n8 680p 22u
5/11
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Oct.20, 2010
5 Page 
PACKAGE OUTLINES
X
AX3132
Expose Pad
b
D
7 (4X)
L
DETAIL A
θ
e
y
Symbol
Dimensions in Millimeters
Min. Nom. Max.
A - - 1.75
A1 0
- 0.15
A2 1.25
-
-
C 0.1 0.2 0.25
D 4.7 4.9 5.1
E 3.7 3.9 4.1
H 5.8 6 6.2
L 0.4 - 1.27
b 0.31 0.41 0.51
e 1.27 BSC
y - - 0.1
X - 2.34 -
Y - 2.34 -
θ 0O - 8O
Mold flash shall not exceed 0.25mm per side
JEDEC outline: MS-012 BA
DETAIL A
Dimensions in Inches
Min. Nom. Max.
- - 0.069
0 - 0.06
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
- 0.092 -
- 0.092 -
0O - 8O
11/11
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Oct.20, 2010
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AX3132.PDF ] | |
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