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AAT4686 Datasheet

  • AAT4686

  • MOSFET Driver IC with Over-Voltage Protection

  • 13頁(yè)

  • ANALOGICTECH

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PRODUCT DATASHEET
AAT4686
OVPSwitch
TM
General Description
The AAT4686 OVPSwitch鈩?is a member of AnalogicTech鈥檚
Application Specific Power MOSFET鈩?(ASPM鈩? product
family. It is a P-channel MOSFET driver IC with precise
over-voltage protection control, designed to protect low-
voltage systems against high-voltage faults up to +28V.
If the input voltage exceeds the programmed over-volt-
age threshold, the external P-channel MOSFET switch
will be turned off to prevent damage to the output load
circuits. The AAT4686 is available with an internally pro-
grammed over-voltage trip point or as an adjustable
version programmed by a two external resistors.
The AAT4686 also includes an under-voltage lockout
(UVLO) protection circuit, which will put the device into
sleep mode at low input voltages only consuming < 1渭A
of current.
The AAT4686 is offered in a small Pb-free, 8-pin SC70JW
package, and is specified for operation over the -40擄C to
+85擄C ambient temperature range.
MOSFET Driver IC with Over-Voltage Protection
Features
鈥?Over-Voltage Protection up to 28V
鈥?(Fixed or Adjustable) Over-Voltage Protection Threshold
鈥?Fast OVP Response:
鈻?/div>
1
渭s
(Max) to Over-Voltage Transient
鈥?Low Operation Quiescent Current
鈻?/div>
30渭A Typical
鈻?/div>
1渭A Max in Shutdown (Disabled)
鈥?Drives External P-Channel MOSFETs
鈥?Under-Voltage Lockout
鈥?Temperature Range: -40 to 85擄C
鈥?Available in SC70JW-8 Package
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Cell Phones
Digital Still Cameras
GPS
MP3 Players
Personal Data Assistants (PDA)
USB Hot Swap / Live Insertion Devices
Typical Application
Fixed Version*
V
OUT
Adjustable Version
V
OUT
+5V
V
IN
3.75V 鈥?28V
IN
GATE
+5V
V
IN
3.75V 鈥?28V
IN
OVP
GATE
1渭F
EN
GND
FLT
Fault Flag
1渭F
EN
GND
FLT
Fault Flag
* Contact manufacturer for available options.
4686.2008.02.1.0
www.analogictech.com
1

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