AAT4610BIGV-1-T1 Skyworks Solutions, Inc., AAT4610BIGV-1-T1 Datasheet - Page 9

• Manufacturer Part Number: AAT4610BIGV-1-T1
• Description: Power Switch ICs - Power Distribution Current Limited Load Switch
• Manufacturer: Skyworks Solutions, Inc.

Specifications of AAT4610BIGV-1-T1

• Rohs: yes
• Number Of Outputs: 1
• On Resistance (max): 230 mOhms
• On Time (max): 200 us
• Off Time (max): 12 us
• Operating Supply Voltage: 2.4 V to 5.5 V
• Supply Current (max): 9 uA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOT23-5
• Current Limit: 1.6 A
• Maximum Power Dissipation: 667 mW
• Minimum Operating Temperature: - 40 C
• Switch Current (max): 1 uA

Example: A USB port requires 0.5A. 0.5A multiplied by
1.33 is 0.665A. From the chart named “R
should be less than 18kΩ. 17.8kΩ is a standard value
that is a little less than 18kΩ but very close. The chart
reads approximately 0.525A as a typical I
17.8kΩ. Multiplying 0.525A by 0.75 and 1.25 shows that
the AAT4610B will limit the load current to greater than
0.394A but less than 0.656A.
(kΩ)
R
40.2
30.9
24.9
22.1
19.6
17.8
16.2
14.7
10.5
8.87
6.81
6.04
5.49
4.99
4.64
7.5
13
SET
Limit Typ
Current
Table 1: Current Limit R
(mA)
1000
1100
1325
1600
1925
1950
2100
2350
225
300
350
425
450
525
600
675
700
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
Limit Below
Not Current
Device Will
4
3
2
1
0
5
-0.05
(mA)
1200
1444
1463
1575
1763
169
225
263
319
338
394
450
506
525
750
825
994
0
SET
1A load is turned on at time = 0
Device Always
Current Limits
Values
Below (mA)
SET
0.05
Figure 2: Overload Operation.
LIM
vs. I
1250
1375
1656
2000
2406
2438
2625
2938
281
375
438
531
563
656
750
844
875
value for
LIM
Overload Operation
,” R
0.1
SET
Operation in Current Limit
When a heavy load is applied to the output of the
AAT4610B, the load current is limited to the value of I
determined by R
demanding more current than I
output drops. This causes the AAT4610B to dissipate a
larger than normal quantity of power, and its die tem-
perature to increase. When the die temperature exceeds
an over-temperature limit, the AAT4610B will shut down
until is has cooled sufficiently, at which point it will
startup again. The AAT4610B will continue to cycle on
and off until the load is removed, power is removed, or
until a logic high level is applied to ON.
Enable Input
In many systems, power planes are controlled by inte-
grated circuits which run at lower voltages than the
power plane itself. The enable input ON of the AAT4610B
has low and high threshold voltages that accommodate
this condition. The threshold voltages are compatible
with 5V TTL and 2.5V to 5V CMOS.
Reverse Voltage
The AAT4610B is designed to control current flowing
from IN to OUT. If a voltage is applied to OUT which is
greater than the voltage on IN, large currents may flow.
This could cause damage to the AAT4610B.
0.15
Output Current
Output Voltage
0.2
SET
Current Limited Load Switch
0.25
(see Figure 2). Since the load is
AAT4610B
0.3
1
0.75
0.5
0.25
0
LIM
DATA SHEET
, the voltage at the
LIM
9