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PDF AX6612 Data sheet ( Hoja de datos )
| Número de pieza | AX6612 | |
| Descripción | 1.5A Ultra Low Dropout Linear Regulator | |
| Fabricantes | AXElite | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AX6612 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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AX6612
1.5A Ultra Low Dropout Linear Regulator
GENERAL DESCRIPTION
The AX6612 is a 1.5A 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 AX6612 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 AX6612 can be enabled by other power system.
Pulling and holding the EN pin below 0.3V shuts off the output.
The AX6612 is available in SOP-8L-EP package which features small size as
SOP-8L and an Exposed Pad to reduce the junction-to-case resistance, being applicable in
2~3W applications.
FEATURES
- Ultra Low Dropout - 0.15V(typical) at 1.5A 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 with Exposed Pad Pb-Free Package.
1/10
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.4 Jul.06, 2010
1 page  
AX6612
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
AX6612
VIN 5
VOUT 3
VOUT 4
FB 2
C2 C3
100uF 0.1uF
VIN=1.5V
Vout=1.2V/1.5A
R1 C6
1K
12~48nF
C4 C5
220uF 0.1u
R2
2K
2. Using an MLCC as the Output Capacitor
R3
1K
VCNTL=5V
U2
6 VCNTL
VIN 5
ON
OFF
C1
1uF
7 POK
8 EN
1 GND
AX6612
VOUT 3
VOUT 4
FB 2
C3
22uF
VIN=1.5V
R1 C6 C5
39K
56pF 22u
Vout=1.2V/1.5A
R2
78K
VOUT=VFB*(1+R1/R2)
VFB = 0.8V
FUNCTION DESCRIPTIONS
FB
Connecting this pin to an external resistor divider receives the feedback voltage of
the regulator. The output voltage set by the resistor divider is determined by:
5/10
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.4 Jul.06, 2010
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AX6612.PDF ] | |
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