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PDF AAT4626IAS-1-T1 Data sheet ( Hoja de datos )
| Número de pieza | AAT4626IAS-1-T1 | |
| Descripción | USB Dual-Channel Power Switch | |
| Fabricantes | Advanced Analogic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AAT4626IAS-1-T1 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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General Description
The AAT4626 SmartSwitch™ is part of
AnalogicTech's Application Specific Power
MOSFET™ (ASPM™) product family. It is a dual-
channel 500mA current-limited P-channel MOSFET
power switch designed for high-side load-switching
applications. This switch operates with inputs rang-
ing from 2.7V to 5.5V, making it ideal for both 3V
and 5V systems. An integrated current-limiting cir-
cuit protects the input supply against large changes
in load current which may cause the supply to fall
out of regulation. The AAT4626 is also protected
from thermal overload which limits power dissipa-
tion and junction temperatures. The current limit
threshold is factory programmed at 1.0A, with a
maximum of 1.5A. The quiescent supply current is
typically a low 20µA. In shutdown mode, the supply
current decreases to less than 1µA.
The AAT4626 is available in 8 pin SOP or TSSOP
specified over a -40 to 85°C temperature range.
The AAT4600 Series is a family of adjustable and
fixed SmartSwitch™ products with a range of cur-
rent handling capabilities. Single versions with
adjustable current limit (AAT4601) or fixed current
limit (AAT4625) as well as dual versions with fixed
current limit (AAT4626) are also available.
AAT4626
USB Dual-Channel Power Switch
Features
SmartSwitch™
• Compliant to USB 1.1 and 2.0 specifications
• 2.7V to 5.5V Input voltage range
• 500mA (min) continuous current per channel
• 1.25A (max) current limit per channel
• 90mΩ typical RDS(ON)
• Low quiescent current
• Typically 20µA
• 1µA max with Switches off
• Thermal shutdown
• Slew rate limited turn on
• Fault flag with 2ms blanking
• Undervoltage Lockout
• Temp range -40 to 85°C
• UL Approved—File No. E217765
• 8 pin SOP or TSSOP package
Applications
• USB ports and peripherals
• Notebook computers
• Hot swap supplies
• General purpose power switching
UL Recognized Component
Typical Application
100kΩ
VCC 5.0V
0.1µF
GND
100kΩ
ENA
ENA
1
(ENA)
(ENA)
ENB
ENB
4
(ENB)
(ENB)
AAT4626
6
FLGA 2
FLGB 3
OUTA 8
OUTB 5
47µF
OUTPUTA
OUTPUTB
47µF
GND
4626.2002.1.0.93
1
1 page  
(Unless otherwise noted, VIN = 5V, TA = 25°C)
Turn-ON/OFF Response with
10 Ohm 1µF load
EN (5V/div)
FAULT (5V/div)
Vout (2V/div)
Iin (200mA/div)
100µs/div
Thermal Shutdown Response
EN (5V/div)
FAULT (5V/div)
Vout (1V/div)
Iin (500mA/div)
100ms / div
Short Circuit Through 0.6 Ohm
6
Input Voltage
6
4
Output Current
3
2
Output Voltage
0
0 -3
-1 0 1 2 3 4 5
Time (µs)
AAT4626
USB Dual-Channel Power Switch
Start Into 1 Ohm load
EN (5V/div)
FAULT (5V/div) Vout (1V/div)
Iin (500 mA/div)
200 µs/div
Short Circuit Through 0.3 Ohm
8 12
6
Input Voltage
8
4 Output Current 4
20
Output Voltage
0 -4
-1 0 1 2 3 4 5
Time (µs)
4626.2002.1.0.93
5
5 Page 
AAT4626
USB Dual-Channel Power Switch
Figure 4: Evaluation board
component side layout
Figure 5: Evaluation board
solder side layout
Figure 6: Evaluation board
top side silk screen layout /
assembly drawing
Application Circuits
VBUS = 5.0V
CIN
0.1µF
R1
100k
USB Controller
On/Off A
Error Flag A
Error Flag B
On/Off B
7
IN
8
OUTA
AAT4626
R2
100k
1
ENA
2
FLGA
3
FLGB
4
ENB
5
OUTB
6
Figure 7: Typical Dual USB Host Port Application
Ferrite Beads
COUT1
0.1µF
COUT2
120µF
VBUS(A)
D+
D-
GND
DATA
(Port A)
Ferrite Beads
COUT3
0.1µF
COUT4
120µF
VBUS(B)
D+
D-
GND
DATA
(Port B)
4626.2002.1.0.93
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AAT4626IAS-1-T1.PDF ] | |
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