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PDF AAT4612 Data sheet ( Hoja de datos )
| Número de pieza | AAT4612 | |
| Descripción | Current Limited Load Switch | |
| Fabricantes | Advanced Analogic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AAT4612 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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AAT4612
Current Limited Load Switch
General Description
The AAT4612 SmartSwitch™ is a member of
AnalogicTech's Application Specific Power MOS-
FET™ (ASPM™) product family. It is a Current
Limited P-channel MOSFET power switch designed
for high-side load-switching applications operating
with inputs ranging from 2.4V to 5.5V which makes it
ideal for both 3V and 5V systems. An integrated cur-
rent-limiting circuit protects the input supply from large
currents which potentially cause the supply to fall out
of regulation. In addition, the AAT4612 thermal over-
load protection limits power dissipation and junction
temperatures associated with prolonged periods of
operation in current limit. Due to its low RDS(ON), the
AAT4612 can be used to control loads that require up
to 1A even while operating at high ambient tempera-
tures. The ultra fast current-limit response to a sud-
den short circuit is a mere 500ns which reduces the
requirements of local supply bypassing. Quiescent
current is a low 10µA and in shutdown mode, the
supply current decreases to less than 1µA.
The AAT4612 is available in a 5-pin SOT23, and an
8-pin SC70JW specified over a -40 to 85°C temper-
ature range.
The AAT4600 Series is a family of adjustable and
fixed SmartSwitch™ products with a range of current
handling capabilities. Available are single versions
with adjustable current limit (AAT4610, AAT4601) as
well as fixed current limit (AAT4625), and dual ver-
sions with fixed current limit (AAT4626, AAT4670).
Typical Application
Features
SmartSwitch™
• 2.4V to 5.5V Input voltage range
• 1A current limit trip threshold
• Fast transient response:
• <1µs response to short circuit
• Low quiescent current
• 10µA typ
• 1µA max with Switch off
• 100mΩ typical RDS(ON)
• Undervoltage Lockout
• Thermal Shutdown
• Temp range -40 to 85°C
• 4kV ESD Rating
• 5-pin SOT23 package
• 8-pin SC70JW package
Applications
• Peripheral ports
• Notebook computers
• Personal communication devices
• Hot swap supplies
INPUT
CIN
1µF
5 IN
ON 4 ON
AAT4612
SOT23
OUT 1
GND
2
VCC
COUT
0.47µF
GND
GND
4612.2002.1.0.9
1
1 page  
Typical Characteristics
Turn-On
RL=10Ω, CL=0.47µF
6
5
4
3
2
1
0
-1
-0.5
ON
0.0
OUT
0.5 1.0
Time (µs)
1.5
2.0
Short Circuit through 0.3 Ω
6.0 12
Input Voltage
5.0 10
4.0 8
3.0 6
2.0 Output Current
4
Output Voltage
1.0 2
0.0 0
-1 0 1 2 3 4 5
Time (µs)
2.4
2.2
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
2
ON Threshold vs. VIN
VON(H)
VON(L)
2.5 3 3.5 4 4.5 5
VIN (V)
5.5
4612.2002.1.0.9
AAT4612
Current Limited Load Switch
Turn-Off
RL=10Ω, CL=0.47µF
6
5
4
3
2
1
0
-1
-5
ON
0
OUT
5 10
Time (µs)
15
20
Thermal Shutdown Response
Output Voltage (5V/div)
Output Current (1A/div)
Time (50ms/div)
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AAT4612.PDF ] | |
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