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PDF AT814 Data sheet ( Hoja de datos )
| Número de pieza | AT814 | |
| Descripción | 1A Low Voltage Low Dropout Regulator | |
| Fabricantes | Immense Advance Tech | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AT814 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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AT814
1A Low Voltage Low Dropout Regulator
FEATURES
Immense Advance Tech.
DESCRIPTION
Adjustable Voltage Versions
Output Current up to 1A
Current limiting and thermal shutdown
Low Ground Current
Fast Transient Response
Reverse-Battery Protection
Reverse-Leakage Protection
Low Dropout Voltage 410mV @ 1A
Ideal for 3.0V to 2.5 Vconversion
Ideal for 2.5V to 1.8V conversion
APPLICATIONS
The AT814 is a high current, high accuracy,low -
dropout voltage regulator. Using process with a
PNP pass element, this regulator is ideal for PC add-
in cards that need to convert from standard 5V to
3.3V, 3.3V to 2.5V or 2.5V to 1.8V.
The AT814 feature 410mV (@1A) dropout voltage
and very low ground Current. Designed for high
current loads, this device also finds applictions in
lower current, extremely low dropout-critical
systems, where its tiny dropout voltage and ground
current values areimportant attributes.
The AT814 is fully protected with over current
limiting , thermal shutdown, and reversed-battery
production. The AT814 feature logic level ON/OFF
control and with adjustable output voltage from
1.24V to 8V. On the AT814, the ENABLE pin may
be tied to VIN if it is not required for ON/OFF
control. The AT814 is available in the SOP-8
package.
LDO Linear Regulatorfor PC add-inCards
PowerPC Power Supplies
High-efficiency linear power supplies
SMPS Post Regulaor
Multimedia and PCProcessor Supplies
Battery Chargers
Low-Voltage Micro Controllers and
Digital Logic
TYPICAL APPLICATION CIRCUITS
AT814
4 5V V VIN IN OUT
+
C1
Enable
3 VIN
2 EN
1 GND
6VOUT
ADJ 7
GND 8
VOUT
R1
+
C2
R2
Ver.1.31
VOUT = 1.24
[1+
R1
R2
]
Volts
1
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1 page  
AT814
1A Low Voltage Low Dropout Regulator
TYPICAL OPERATING CHARACTERISTICS
Immense Advance Tech.
450
400
350
300
250
200
150
100
50
0
0.0
0.25 0.5
0.75 1.0 1.25
Output Current (A)
Dropout Voltage vs. Output Current
Adjust Vout to 1.8V
650
ILOAD = 1A
600
550
450
400
350
300
-20 0 20 40 60 80 100 120
Temperature (°C)
Dropout Voltage vs. Temperature
2.8
ILOAD = 1A
2.6
2.4
2.2
2.0
1.8
2 2.2 2.4 2.6 2.8 3.0 3.2
Input Voltage(V)
Dropout Characteristics
Adjust Vout to 2.5V
1.8
ILOAD = 100mA
1.5
1.2
0.9
0.6
0.3
0
0
2468
Supply Voltage (V)
10
Ground Current vs. Supply Voltage
Adjust Vout to 2.5V
30
ILOAD = 1A
25
1.0
ILOAD = 10mA
0.8
20
0.6
15
0.4
10
0.2
5
00 20 40 60 80 100 120 140
Temperature (°C)
Ground Current vs. Temperature
0
0 20 40 60 80 100 120 140
Temperature (°C)
Ground Current vs. Temperature
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3DEVICES
3.24
3.22
3.20
0
20 40 60 80 100 120 140
Temperature (°C)
Output Voltage vs. Temperature
Adjust Vout to 3.3V
2.55
2.54
2.53
2.52
2.51
2.50
2.49
2.48
3DEVICES
2.47
2.46
2.45
0
20 40 60 80 100 120 140
Temperature (°C)
Output Voltage vs. Temperature
Adjust Vout to 2.5V
5
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5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet AT814.PDF ] | |
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