AAT4618
器件描述：Current Limited Load Switch
器件厂商：ANALOGICTECH [Advanced Analogic Technologies]
文件大小：225.17KB，共10页
Sponsor by e络盟器件资料摘要：
SmartSwitch
™
AAT4618
Current Limited Load Switch
Preliminary
Information
4618.2002.2.0.9 1
General Description
The AAT4618 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 2.5V, 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 AAT4618 thermal over-
load protection limits power dissipation and junction
temperatures associated with prolonged periods of
operation in current limit. Due to its low R
DS(ON)
, the
AAT4618 can be used to control loads that require up
to 500mAeven while operating at high ambient tem-
peratures. The ultra fast current-limit response to a
sudden short circuit is a mere 400ns which reduces
the requirements of local supply bypassing. An open
drain FAULTflag signals an over current or over tem-
perature condition after a 4ms timeout. Quiescent
current is a low 10µAand in shutdown mode, the sup-
ply current decreases to less than 1µA.
The AAT4618 is available in a 5 pin SOT-23, 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).
Features
• 2.4V to 5.5V Input voltage range
• 500mAmin current limit trip threshold
• Fast transient response:
• 400ns response to short circuit
• Low quiescent current
• 10µAtypical
• < 1µAwith Switch off
• 125mΩ typical R
DS(ON)
• FAULTflag with 4ms blanking
• Undervoltage Lockout
• Thermal shutdown
• Temp range -40 to 85°C
• 4kV ESD Rating
• 5 pin SOT23 package
• 8 pin SC70JW package
Applications
• Peripheral ports
• USB Ports
• Notebook computers
• Personal communication devices
• Hot swap supplies
Typical Application
AAT4618
ON (ON)
IN OUT
FAULT
GND
ON
(ON)
100k
INPUT
GND GND
C
IN
1µF
C
OUT
0.47µF
OUTPUT
FAULT
™
AAT4618
Current Limited Load Switch
Preliminary
Information
4618.2002.2.0.9 1
General Description
The AAT4618 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 2.5V, 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 AAT4618 thermal over-
load protection limits power dissipation and junction
temperatures associated with prolonged periods of
operation in current limit. Due to its low R
DS(ON)
, the
AAT4618 can be used to control loads that require up
to 500mAeven while operating at high ambient tem-
peratures. The ultra fast current-limit response to a
sudden short circuit is a mere 400ns which reduces
the requirements of local supply bypassing. An open
drain FAULTflag signals an over current or over tem-
perature condition after a 4ms timeout. Quiescent
current is a low 10µAand in shutdown mode, the sup-
ply current decreases to less than 1µA.
The AAT4618 is available in a 5 pin SOT-23, 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).
Features
• 2.4V to 5.5V Input voltage range
• 500mAmin current limit trip threshold
• Fast transient response:
• 400ns response to short circuit
• Low quiescent current
• 10µAtypical
• < 1µAwith Switch off
• 125mΩ typical R
DS(ON)
• FAULTflag with 4ms blanking
• Undervoltage Lockout
• Thermal shutdown
• Temp range -40 to 85°C
• 4kV ESD Rating
• 5 pin SOT23 package
• 8 pin SC70JW package
Applications
• Peripheral ports
• USB Ports
• Notebook computers
• Personal communication devices
• Hot swap supplies
Typical Application
AAT4618
ON (ON)
IN OUT
FAULT
GND
ON
(ON)
100k
INPUT
GND GND
C
IN
1µF
C
OUT
0.47µF
OUTPUT
FAULT