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PDF AX6302 Data sheet ( Hoja de datos )
| Número de pieza | AX6302 | |
| Descripción | Ultra Low Output Voltage Linear N-FET Controller | |
| Fabricantes | AXElite | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AX6302 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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AX6302
Ultra Low Output Voltage Linear N-FET
Controller
GENERAL DESCRIPTION
The AX6302 is an ultra low output voltage linear N-FET controller. This product is
specifically designed to provide well supply voltage for front-side-bus termination on
motherboards and NB applications. The AX6302 integrates many functions. A
Power-On-Reset (POR) circuit monitors supply voltages to prevent wrong operations. A
POK indicates the output status with time delay which is set internally. It can control other
converter for power sequence. The AX6302 can be enabled by other power system.
A 0.5V reference voltage with 2% accuracy provide tight regulation of the output
voltage, enable control, open drain power good signal, under-voltage protection and soft
start.
FEATURES
- Low ESR Output Capacitor (MLCC and POSCAP) Applicable
- 0.5V Reference Voltage with 2% accuracy
- Fast Transient Response
- Adjustable Output Voltage Down to 0.5V
- Enable Control
- Internal Soft-Start
- Under-Voltage Short Circuit Protection
- Drive N-Channel MOSFETs
- Power-OK Output with a Delay Time
- SOT-23-6L Pb-Free Package.
1/6
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.2 Oct.18, 2011
1 page  
AX6302
Under-Voltage Protection (UVP)
The AX6302 monitors the voltage on FB pin after soft-start process is finished.
Therefore the UVP is disabling during soft-start. When the voltage on FB pin falls below
the under-voltage threshold, the UVP circuit shuts off the output immediately. After a while
(~ 70% Duty), the AX6302 starts a new soft-start to regulate output.
Thermal Shutdown
A thermal shutdown circuit limits the junction temperature of AX6302. When the
junction temperature exceeds +150°C, a thermal sensor turns off the output NMOS,
allowing the device to cool down. The regulator regulates the output again through
initiation of a new soft-start cycle after the junction temperature cools by 50°C, resulting in
a pulsed output during continuous thermal overload conditions.
TYPICAL CHARACTERISTICS
1.28
1.26
1.24
1.22
VOUT 1.2
(V) 1.18
1.16
1.14
1.12
3
Line regulation (VOUT)
3.5 4
4.5 5
VCNTL (V)
1.215
1.213
1.211
1.209
VOUT 1.207
(V) 1.205
1.203
1.201
1.199
1.197
5.5 6
1.195
0
0. 512
0. 509
0. 506
VFB 0.503
(V) 0.500
0.497
0. 494
0. 491
0. 488
Temperature Vs VFB
-40℃ -25℃ 0℃ 25℃ 50℃ 75℃ 100℃
Temperature (℃)
Load Regulation (VOUT)
0.5 1
1.5 2
IOUT (A)
2.5 3
5/6
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.2 Oct.18, 2011
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet AX6302.PDF ] | |
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