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PDF AAT4614 Data sheet ( Hoja de datos )
| Número de pieza | AAT4614 | |
| Descripción | Adjustable Current Limited Load Switch | |
| Fabricantes | Analogic Corporation | |
| Logotipo |  |
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SmartSwitchTM
PRODUCT DATASHEET
AAT4614
Adjustable Current Limited Load Switch with Fault Flag
General Description
The AAT4614 SmartSwitch is a current limited P-channel
wwMwO.dSaFtaEsThepeto4wu.ecormswitch designed for high side load switch-
ing applications. This switch operates with inputs ranging
from 2.4V to 5.5V, making it ideal for both 3V and 5V
systems. An integrated current-limiting circuit protects
the input supply against large currents which may cause
the supply to fall out of regulation. Reverse current
blocking is provided to protect the load switch from
reverse current potentials while the device is shutdown.
The AAT4614 is also protected from thermal overload
which is limited by power dissipation and junction tem-
peratures. Current limit threshold is programmed with a
resistor from SET to ground and may be adjusted for
levels up to 1.6A. The ultra-fast current limit response to
a sudden short circuit is a mere 1μs which reduces the
requirements of local supply bypassing. An open drain
FAULT flag signals an over-current or over-temperature
condition after a 4ms blanking time to prevent false
reporting. Quiescent current is a low 10μA and the supply
current decreases to less than 1μA in shutdown mode.
The AAT4614 is offered in the small Pb-free, 8-pin
SC70JW, SOT23-6 and SOT23-5 packages, and is speci-
fied for operation over the -40°C to +85°C ambient
temperature range.
Features
• Input Voltage Range: 2.4V to 5.5V
• Programmable Over-Current Threshold
• Fast Transient Response:
▪ 1μs Response to Short Circuit
• Low Quiescent Current
▪ 10μA Typical while Enabled
▪ 1μA Max with Switch Off (TA = 25°C)
• 130mΩ Typical RDS(ON)
• Only 2.4V Needed for ON/OFF Control
• Under-Voltage Lockout
• Reverse Blocking During Disable
• 4ms Fault Blanking
• Fault Flag Open Drain Output
(Not Available for SOT23-5 Package)
• Active Hi/Lo Enable Options
• Over-Temperature Protection
• 4kV ESD Rating
• 6-Pin SOT23, 5-Pin SOT23,or 8-Pin SC70JW Package
• Temperature Range: -40°C to +85°C
Applications
• Hot Swap Supplies
• Notebook Computers
• Portable Products
• Proprietary Peripheral Ports
• USB Ports
Typical Application
Power Supply Input
1μF EN/EN
IN AAT4614 OUT
ON/ON
SET GND FLT
RSET
100k
Fault Flag
Output
0.47μF
4614.2009.03.1.1
www.analogictech.com
1
1 page  
SmartSwitchTM
PRODUCT DATASHEET
AAT4614
Adjustable Current Limited Load Switch with Fault Flag
Typical Characteristics
Unless otherwise noted, VIN = 5V, TA = 25°C, RSET = 6.8KΩ.
www.datasheet4u.com
Quiescent Current vs. Temperature
20
15
10
5
0
-40 -15 10 35 60
Temperature (°C)
85
Output Current vs. Output Voltage
(RSET = 6.8KΩ)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0 1234
Output Voltage (V)
5
Quiescent Current vs. Input Voltage
20
15
10
5
0
01 23 45 6
Input Voltage (V)
Off-Switch Current vs. Temperature
4
3
2
1
0
-40 -15 10 35 60
Temperature (°C)
85
220
200
180
160
140
120
100
80
60
40
20
0
-40
RDS(ON) vs. Temperature
VIN = 3V
VIN = 5V
-15 10 35 60 85
Temperature (°C)
100
10
1
100
RSET vs. ILIM
1000
ILIM (mA)
10000
4614.2009.03.1.1
www.analogictech.com
5
5 Page 
SmartSwitchTM
PRODUCT DATASHEET
AAT4614
Adjustable Current Limited Load Switch with Fault Flag
Evaluation Board Schematic
www.datasheet4u.com
TP1
OUT
TP2
GND
TP3
FAULT/SET
C2
0.47μF
U1
1 OUT
2 GND
3 FLT
AAT4614
IN
SET
ON/ON
6
5
4
C1 R1
1μF TP 4 6.8K
TP5
IN
SET
TP6
ON
R2
100K
R3
6.8K
Note: Do Not Solder R3 for SOT23-6 Device;
Do Not Solder R1,R2 for SOT23-5 Device
1
2
3
JP1
Figure 6: AAT4614 Evaluation Board Schematic for SOT23-6 and SOT23-5 Package.
TP6
ON
TP5
SET
TP3
FAULT
R2
100K
R1
6.8K
TP4
IN
C1
1μF
U1 AAT4614
1 FLT
2 ON/ON
3 SET
4 IN
GND
GND
GND
OUT
8
7
6
5
TP2
GND
TP1
C2
0.47μF
OUT
JP1
1
2
3
Figure 7: AAT4614 Evaluation Board for SC70JW-8 Package.
4614.2009.03.1.1
www.analogictech.com
11
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| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet AAT4614.PDF ] | |
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