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AAT4601IAS-B1 데이터시트 PDF




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부품번호 AAT4601IAS-B1 기능
기능 1.5A Current Limited P-Channel Switch
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AAT4601IAS-B1 데이터시트, 핀배열, 회로
AAT4601
1.5A Current Limited P-Channel Switch
General Description
The AAT4601 SmartSwitch™ is part of
AnalogicTech's Application Specific Power
MOSFET™ (ASPM™) product family. It is a 1.5A
Current Limited P-channel MOSFET power switch
designed for high-side load-switching applications.
This switch operates with inputs ranging from 2.7V
to 5.5V, making it ideal for both 3V and 5V sys-
tems. An integrated current-limiting circuit protects
the input supply against large changes in load cur-
rent which could cause the supply to fall out of reg-
ulation. The AAT4601 has protection from thermal
overload which limits power dissipation and junc-
tion temperatures. The maximum current limit
level is 1.5A; the actual threshold is programmed
with a resistor from the SET pin to ground. The qui-
escent supply current is typically 12µA. In shut-
down mode, the supply current decreases to less
than 1µA.
The AAT4601 is available in 8-pin SOP or TSSOP
specified over -40 to 85°C.
Features
SmartSwitch
• 2.7V to 5.5V Input voltage range
• Programmable over current threshold
• Low quiescent current
• 12µA typical
• Less than 1µA with Switch off
• Only 2.5V needed for ON Control
• Thermal Shutdown
• Fault Flag
• 2ms Fault Blanking
• Undervoltage Lockout
• Temperature range -40 to 85°C
• 2kV ESD rating
• UL Approved—File No. E217765
• 8-pin SOP or TSSOP package
Applications
• USB ports
• Notebook computers
• Peripheral ports
• Hot swap supplies
Typical Application
UL Recognized Component
INPUT
1µF
100k
ON
1
IN
2
IN
8 FAULT
3
ON
AAT4601
GND
4
6
OUT
7
OUT
5
SET
RSET
OUTPUT
1uF
4601.2001.11.0.92
1




AAT4601IAS-B1 pdf, 반도체, 판매, 대치품
AAT4601
1.5A Current Limited P-Channel Switch
Typical Characteristics
(Unless otherwise noted, VIN = 5V, TA = 25°C)
Quiescent Current vs. Temperature
25
20
15
10
5
0
-40
-20
0 20 40 60 80
Temperature (°C)
100 120
Quiescent Current
25
20
15
10
5
0
0123456
Input (V)
Current Limit
1
0.8
0.6
0.4
0.2
0
0
9RSET = 2 k
Input Voltage = 5 V
12
3
Output (V)
4
5
Off-Supply Current vs. Temperature
10
1
0.1
0.01
0.001
0.0001
-40
-20
0
20 40 60 80 100 120 140
Temperature (°C)
4
RSET ILIM Product vs ILIM
2500
2000
1500
1000
500
0
0.5 1
Typical I LIM (A)
1.5
2
Off-Switch Current vs. Temperature
10
1
0.1
0.01
0.001
0.0001
-40 -20
0
20 40 60 80 100 120 140
Temperature (°C)
4601.2001.11.0.92

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AAT4601IAS-B1 전자부품, 판매, 대치품
Functional Block Diagram
AAT4601
1.5A Current Limited P-Channel Switch
IN
Under-
voltage
Lockout
Over-temp
Protection
ON
1.2V
Reference
Current
Limit
OUT
FAULT
SET
Functional Description
The AAT4601 is an integrated MOSFET load
switch with an adjustable current limit, over tem-
perature protection, level shifted input and a fault
flag. The current limit control is combined with an
over temperature thermal limit circuit to provide a
comprehensive system to protect the load switch
under short circuit or other adverse operating con-
ditions. The AAT4601 is ideally suited for control
and protection of peripheral ports such as USB,
RS232 and parallel ports.
The current limit and over temperature circuits will
act independently. The device current limit is acti-
vated when the output load current exceeds an
internal threshold level. The internal current limit
threshold is determined by an external resistor
connected between the SET pin and ground. The
minimum current limit threshold is specified by
ILIM(MIN). If the load switch ambient temperature
becomes excessive or if a short circuit condition
4601.2001.11.0.92
persists, the die temperature will rise causing the
over temperature protection circuit to activate.
If the current limit or over temperature protection
circuits are active for more then two milliseconds,
the system will be informed via the FAULT Flag.
The two millisecond delay allows the AAT4601 to
be turned on into capacitive loads without activat-
ing the FAULT Flag. The open drain FAULT output
can be connected directly to system controllers
driven by voltage levels less than the IN pin voltage
without additional level shifting circuitry.
The load switch is turned off by applying a logic high
level to the ON pin. The AAT4601 typically con-
sumes 12µA when operating, when off, the device
draws less then 1µA. In the off state, current is pre-
vented from flowing between the input and output.
The ON function has logic level thresholds that
allow the AAT4601 to be TTL compatible and may
also be controlled by 2.5V to 5.0V CMOS circuits.
The voltage level on either ON or FAULT should not
exceed the input supply level present on the IN pin.
7

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AAT4601IAS-B1

1.5A Current Limited P-Channel Switch

Advanced Analogic Technologies
Advanced Analogic Technologies

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