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PDF AX6615 Data sheet ( Hoja de datos )
| Número de pieza | AX6615 | |
| Descripción | 3A Ultra Low Dropout Linear Regulator | |
| Fabricantes | AXElite | |
| Logotipo |  |
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AX6615
3A Ultra Low Dropout Linear Regulator
GENERAL DESCRIPTION
The AX6615 is a 3A ultra low dropout linear regulator. This product is specifically
designed to provide well supply voltage for front-side-bus termination on motherboards and
NB applications. The IC needs two supply voltages, a control voltage for the circuitry and a
main supply voltage for power conversion, to reduce power dissipation and provide
extremely low dropout. The AX6615 integrates many functions. A Power-On-Reset (POR)
circuit monitors both supply voltages to prevent wrong operations. A thermal shutdown and
current limit functions protect the device against thermal and current over-loads. A POK
indicates the output status with time delay which is set internally. It can control other
converter for power sequence. The AX6615 can be enabled by other power system.
Pulling and holding the EN pin below 0.3V shuts off the output.
The AX6615 is available in SOP-8L-EP and TDFN-10L packages which features
small size as an Exposed Pad to reduce the junction-to-case resistance, being applicable
in 2~3W applications.
FEATURES
- Ultra Low Dropout - 0.23V(typical) at 3A Output Current
- Low ESR Output Capacitor (Multi-layer Chip Capacitors (MLCC)) Applicable
- 0.8V Reference Voltage
- Fast Transient Response
- Adjustable Output Voltage by External Resistors
- Power-On-Reset Monitoring on Both VCNTL and VIN Pins
- Internal Soft-Start
- Under-Voltage Protection
- Current-Limit and Thermal Shutdown Protection
- Power-OK Output with a Delay Time
- SOP-8L-EP and TDFN-10L (3mm*3mm) Pb-Free Package.
1/12
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.2 Jun.15 2011
1 page  
AX6615
APPLICATION CIRCUIT
1. Using an Output Capacitor with ESR≧20mΩ
R3
1K
VCNTL=5V
C1
1uF
ON
OFF
U1
6 VCNTL
7 POK
8 EN
1 GND
VIN 5
3
VOUT
VOUT 4
FB 2
AX6615ES
C2 C3
100uF 0.1uF
VIN=1.5V
Vout=1.2V/3A
R1 C6
1K
12~48nF
C4 C5
220uF 0.1u
R2
2K
2. Using an MLCC as the Output Capacitor
SOP-8L-EP
R3
10K
VCNTL=5V
U2
6 VCNTL
VIN 5
ON
C1 OFF
1uF
7 POK
8 EN
1 GND
VOUT 3
VOUT 4
FB 2
AX6615ES
VOUT=VFB*(1+R1/R2)
VFB = 0.8V
TDFN-10L
VCNTL=5V
ON
C1 OFF
1uF
R3
10K
U2
3 VCNTL
4 POK
5 EN
VIN 1
VIN 2
VOUT 8
VOUT 9
6 GND
FB 7
AX6615J10
VOUT=VFB*(1+R1/R2)
VFB = 0.8V
VIN=1.5V
C3
10uF
R1
39K
C6
56pF
Vout=1.2V/3A
C5
10uF
R2
78K
VIN=1.5V
C3
10uF
Vout=1.2V/3A
R1
39K
C6
56pF
C5
10uF
R2
78K
5/12
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.2 Jun.15 2011
5 Page 
PACKAGE OUTLINES
(1) SOP-8L-EP
X
AX6615
Expose Pad
b
D
7 (4X)
L
DETAIL A
θ
e
y
DETAIL A
Symbol
A
A1
A2
C
D
E
H
L
b
e
y
X
Y
θ
Dimensions in Millimeters
Min. Nom. Max.
- - 1.75
0 - 0.15
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
- 2.34 -
- 2.34 -
0O - 8O
Mold flash shall not exceed 0.25mm per side
JEDEC outline: MS-012 BA
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
11/12
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.2 Jun.15 2011
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AX6615.PDF ] | |
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