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參數(shù)資料
| 型號(hào)： | AAT4670IWP-T1 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | Dual-Input, Dual-Output Load Switch |
| 中文描述： | 雙輸入，雙輸出負(fù)荷開(kāi)關(guān) |
| 文件頁(yè)數(shù)： | 1/13頁(yè) |
| 文件大?。?/td> | 279K |
| 代理商： | AAT4670IWP-T1 |
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SmartSwitch
AAT4670
Dual-Input, Dual-Output Load Switch
4670.2006.09.1.4
1
General Description
The AAT4670 SmartSwitch is a member of
AnalogicTech’s Application Specific Power MOS-
FET (ASPM) product family. The AAT4670
consists of dual, independent, 1A current limited,
slew rate controlled P-channel MOSFET power
switches with a dedicated source and drain pin
assigned to each switch. The internal circuitry auto-
matically derives power from the higher of the two
input power source pins with a low operating quies-
cent current of 18μA. In shutdown mode, the supply
current decreases to less than 1μA. The switches
operate with inputs ranging from 2.2V to 5.5V, mak-
ing them ideal for 2.5V, 3V, and 5V systems. The
dual configuration permits integration of the load
switch function for systems with two different power
busses. Independent under-voltage lockout circuits
will shut down the corresponding switch if its input
voltage falls below the under-voltage lockout thresh-
old. If the die temperature reaches the thermal limit,
both switches thermal cycle off and on indefinitely
without damage until the thermal condition is
removed. An open drain FAULT output signals an
over-current or over-temperature condition for each
channel. Input logic levels are TTL compatible.
The AAT4670 is available in a Pb-free, space-sav-
ing, thermally-enhanced TDFN 3x3x0.8mm 12-lead
package. The device is also available in a Pb-free
8-pin SOP, TSSOP, or MSOP package and is spec-
ified over the -40°C to +85°C temperature range.
Features
2.2V to 5.5V Input Voltage Range
1A Current Limit Per Channel
95m
Ω
Typical R
DS(ON)
Fast Transient Response:
— <1μs Response to Short Circuit
Low 18μA Quiescent Current
1μA Max with Switches Off
Slew Rate Controlled
Thermal Shutdown
Fault Flags with 3ms Blanking
Under-Voltage Lockout
Temperature Range: -40°C to +85oC
Available in TDFN33-12, SOP-8, TSSOP-8, or
MSOP-8 Package
Applications
Hot Swap Supplies
Media Bay
Notebook Computer
PDA, Subnotebook
Peripheral Ports
USB Ports
Typical Application
INA
INB
EN
C
INA
1
μ
F
C
INB
1
μ
F
FAULTA
FAULTB
OUTA
OUTB
GND
AAT4670
INA
INB
GND
GND
OUTA
OUTB
EN
FAULTA
FAULTB
C
OUTA
1
μ
F
C
OUTB
1
μ
F
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