AAT4610BIJS-T1 Skyworks Solutions, Inc., AAT4610BIJS-T1 Datasheet - Page 8

• Manufacturer Part Number: AAT4610BIJS-T1
• Description: Power Switch ICs - Power Distribution Current Limited Load Switch
• Manufacturer: Skyworks Solutions, Inc.

Specifications of AAT4610BIJS-T1

• Rohs: yes
• Operating Supply Voltage: 2.4 V to 5.5 V

Functional Block Diagram
Application Information
Setting Current Limit
In most applications, the variation in I
into account when determining R
due to processing variations from part to part, as well as
variations in the voltages at IN and OUT, plus the operat-
ing
Temperature” and “Output Current vs. V
these three factors add up to a ±25% tolerance (see I
specification in Electrical Characteristics section). Figure
1 illustrates a cold device with a statistically higher cur-
rent limit and a hot device with a statistically lower cur-
rent limit, both with R
chart, "R
of 10.5kΩ, this figure shows that the actual current limit
will be at least 0.825A and no greater than 1.375A.
To determine R
by the load and multiply it by 1.33 (typical I
mum I
Next, refer to “R
sponds to the typical current limit value. Choose the
8
temperature.
LIM
SET
/ 0.75). This is the typical current limit value.
vs. I
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
SET,
LIM
SET
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
start with the maximum current drawn
” indicates an I
vs. I
See
ON (ON)
SET
LIM
” and find the R
charts
equal to 8.87kΩ. While the
IN
SET.
LIM
“Current
of 1.1A with an R
The I
LIM
Voltage
Lockout
Under-
must be taken
LIM
OUT
SET
.” Together,
variation is
that corre-
LIM
Limit
= mini-
Reference
1.2V
vs.
SET
LIM
GND
Over-Temperature
largest resistor available that is less than or equal to it.
For greater precision, the value of R
culated using the I
Coefficient vs. I
multiplying the typical current for the chosen R
chart by 1.25. A few standard resistor values are listed
in Table 1.
Protection
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
Figure 1: Current Limit Using 10.5kΩ.
0
0
Current
Device with high current limit at -40°C
Limit
Current Limit vs. Output Voltage
LIM
1
.” The maximum current is derived by
LIM
Current Limited Load Switch
R
SET
OUT
SET
Output Voltage (V)
product found in the chart “R
(R
AAT4610B
2
Device with low current limit at 85°C
I
I
SET
MAX
MIN
= 0.825A
= 1.375A
= 8.87kΩ)
R
SET
DATA SHEET
3
SET
may also be cal-
4
SET
in the
5
SET