AAT4610B - Skyworks Solutions, Inc.

DATA SHEET
AAT4610B
Current Limited Load Switch
General Description
Features
The AAT4610B SmartSwitch is a current limited P-channel
MOSFET power switch designed for high-side load
switching applications. This switch operates with inputs
ranging from 2.4V to 5.5V, making it ideal for both 3V
and 5V systems. An integrated current-limiting circuit
protects the input supply against large currents which
may cause the supply to fall out of regulation. The
AAT4610B is also protected from thermal overload which
limits power dissipation and junction temperatures. It
can be used to control loads that require up to 1A.
Current limit threshold is programmed with a resistor
from SET to ground. The quiescent supply current is
typically a low 9μA. In shutdown mode, the supply current decreases to less than 1μA.
• Input Voltage Range: 2.4V to 5.5V
• Programmable Over-Current Threshold
• Fast Transient Response:
▪ 400ns Response to Short Circuit
• Low Quiescent Current
▪ 9μA Typical
▪ 1μA Max with Switch Off
• 145mΩ Typical RDS(ON)
• Only 2.5V Needed for ON/OFF Control
• Under-Voltage Lockout
• Thermal Shutdown
• 4kV ESD Rating
• 5-Pin SOT23 or 8-Pin SC70JW Package
• Temperature Range: -40°C to +85°C
The AAT4610B is available in a Pb-free 5-pin SOT23 or
8-pin SC70JW package and is specified over the -40°C to
+85°C temperature range.
Applications
•
•
•
•
Hot Swap Supplies
Notebook Computers
Peripheral Ports
Personal Communication Devices
UL Recognized Component
• UL Approved—File No. E217765
• Certified to IEC 60950-1(ed. 2), IEC 60950-1(ed. 2);
am1
Typical Application
INPUT
OUTPUT
IN
AAT4610B
OUT
SOT23-5
ON (ON)
SET
ON/(ON)
GND
1μF
GND
RSET
0.47μF
GND
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
1
DATA SHEET
AAT4610B
Current Limited Load Switch
Pin Descriptions
Pin Number
SOT23-5
SC70JW-8
Symbol
1
2
5
6, 7, 8
OUT
GND
3
1
SET
4
2
ON
5
3, 4
IN
Function
P-channel MOSFET drain. Connect a 0.47μF capacitor from OUT to GND.
Ground connection.
Current limit set input. A resistor from SET to ground sets the current limit for
the switch.
Enable input. Two versions are available, active-high and active-low. See Ordering Information for details.
P-channel MOSFET source. Connect a 1μF capacitor from IN to GND.
Pin Configuration
SOT23-5
(Top View)
OUT
GND
SET
2
1
SC70JW-8
(Top View)
5
IN
2
3
4
ON
SET
ON
IN
IN
1
8
2
7
3
6
4
5
GND
GND
GND
OUT
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
DATA SHEET
AAT4610B
Current Limited Load Switch
Absolute Maximum Ratings1
TA = 25°C, unless otherwise noted.
Symbol
Description
VIN
VON
VSET, VOUT
IMAX
TJ
TLEAD
VESD
IN to GND
ON(ON) to GND
SET, OUT to GND
Maximum Continuous Switch Current
Operating Junction Temperature Range
Maximum Soldering Temperature (at Leads)
ESD Rating2 - HBM
Value
Units
-0.3 to 6
-0.3 to VIN + 0.3
-0.3 to VIN + 0.3
2
-40 to 150
300
4000
V
V
V
A
°C
°C
V
Value
Units
150
667
°C/W
mW
Thermal Characteristics3
Symbol
JA
PD
Description
Thermal Resistance (SOT23-5 or SC70JW-8)
Power Dissipation (SOT23-5 or SC70JW-8)
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions
specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin.
3. Mounted on a demo board.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
3
DATA SHEET
AAT4610B
Current Limited Load Switch
Electrical Characteristics
VIN = 5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol
VIN
IQ
Description
IQ(OFF)
ISD(OFF)
VUVLO
Operation Voltage
Quiescent Current
Off Supply Current
Off Switch Current
Under-Voltage Lockout
RDS(ON)
On Resistance
TCRDS
ILIM
ILIM(MIN)
VON(L)
Conditions
Min
2.4
VIN = 5V, ON (ON) = Active, IOUT = 0
ON (ON) = Inactive, VIN = 5.5V
ON (ON) = Inactive, VIN = 5.5V, VOUT = 0
Rising Edge, 1% Hysteresis
VIN = 5.0V, TA = 25°C
VIN = 4.5V, TA = 25°C
VIN = 3.0V, TA = 25°C
9
0.01
1.8
145
150
190
On Resistance Temperature Coefficient
Current Limit
Minimum Current Limit
ON (ON) Input Low Voltage
Typ
Max
Units
5.5
25
1
1
2.4
180
V
μA
μA
μA
V
mΩ
230
2800
RSET = 6.8kΩ
VON(H)
ON (ON) Input High Voltage
ION(SINK)
TRESP
TOFF
TON
ON (ON) Input Leakage
Current Limit Response Time
Turn-Off Time
Turn-On Time
VIN = 2.7V to 5.5V1
VIN = 2.7V to < 4.2V1
VIN ≥ 4.2V to 5.0V1
VON = 5.5V
VIN = 5V
VIN = 5V, RL = 10Ω
VIN = 5V, RL = 10Ω
TSD
Over-Temperature Threshold
VIN = 5V
1.2
1.6
130
ppm/°C
2.0
0.8
2.0
2.4
TJ Increasing
TJ Decreasing
V
0.01
0.4
4
12
125
115
1
12
200
1. For VIN outside this range, consult Typical ON (ON) Threshold curve.
4
A
mA
V
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
μA
μs
μs
μs
°C
DATA SHEET
AAT4610B
Current Limited Load Switch
Typical Characteristics
Unless otherwise noted, VIN = 5V, TA = 25°C.
Quiescent Current vs. Temperature
Quiescent Current vs. Input Voltage
Quiescent Current (μA)
20
15
10
5
0
-40
-20
0
20
40
60
80
100
15
10
5
0
0
120
1
2
3
4
5
Temperature (°C)
Input Voltage (V)
Output Current vs. Output Voltage
RDS(ON) vs. Temperature
6
(RSET = 22.1kΩ)
0.4
RDS(ON) (mΩ)
Output Current (A)
0.5
0.3
0.2
0.1
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
240
220
200
180
160
140
120
100
80
60
40
20
0
Input = 3V
Input = 5V
-40
-20
0
20
40
60
80
100
Output Voltage (V)
Temperature (˚˚C)
Off-Supply Current vs. Temperature
Off-Switch Current vs. Temperature
10
1
0.1
0.01
-40
120
10
Off-Switch Current (μA)
Off-Supply Current (μA)
Quiescent Current (μA)
20
-20
0
20
40
60
80
Temperature (°C)
100
120
1
0.1
0.01
0.001
-40
-20
0
20
40
60
80
100
120
Temperature (°°C)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
5
DATA SHEET
AAT4610B
Current Limited Load Switch
Typical Characteristics
Unless otherwise noted, VIN = 5V, TA = 25°C.
Turn-On vs. Temperature
Turn-Off vs. Temperature
(RLOAD = 10Ω; CLOAD = 0.47μF)
(RLOAD = 10Ω; CLOAD = 0.47μF)
6
20
VIN = 5V
10
0
-40
-20
0
VIN = 5V
5
VIN = 3V
Turn-Off Time (μs)
Turn-On Time (μs)
30
20
40
60
80
4
VIN = 3V
3
2
1
0
100
-40
-20
0
20
Temperature (°C)
Turn-On
5
ON
Output
Voltage (V)
Voltage (V)
6
5
3
2
1
2
0
10
15
20
25
30
35
40
45
-10
50
Output
1
-1
5
-5
0
5
10
Time (μs)
12
10
Input Voltage
5
6
4
Output Current
2
2
0
Output Voltage
-2
-4
0.0
0.5
1.0
1.5
Time (μs)
6
8
4
0
-0.5
25
30
35
40
45
50
2.0
2.5
3.0
2.20
Output Current (A)
Input and Output Voltage (V)
8
1
20
V IH and V IL vs. VIN
7
3
15
Time (μs)
Short-Circuit Through 0.3Ω
6
100
3
0
0
ON
4
-1
-5
80
Turn-Off
6
-10
60
(RL = 10Ω
Ω; CL = 0.47μF)
(RL = 10Ω; CL = 0.47μF)
4
40
Temperature (°C)
2.00
1.80
1.60
1.40
VIH
1.20
VIL
1.00
0.80
2.5
3.0
3.5
4.0
4.5
VIN (V)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
5.0
5.5
DATA SHEET
AAT4610B
Current Limited Load Switch
Typical Characteristics
Unless otherwise noted, VIN = 5V, TA = 25°C.
RSET vs. ILIM
RSET Coefficient vs. ILIM
10
RSET ILIM Product (kV)
RSET (kΩ)
100
10
1
100
9
8
7
6
5
1000
10000
ILIM (mA)
0
0.5
1
1.5
2
ILIM (A)
Output Current vs. Temperature
(RSET = 22.1kΩ)
Current Limit (%)
0.5
0.4
0.3
0.2
0.1
0
-0.1
-50
- 25
0
25
50
75
100
Temperature (°°C)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
7
DATA SHEET
AAT4610B
Current Limited Load Switch
Functional Block Diagram
IN
OUT
Over-Temperature
Protection
UnderVoltage
Lockout
ON (ON)
1.2V
Reference
SET
Current
Limit
RSET
GND
Setting Current Limit
In most applications, the variation in ILIM must be taken
into account when determining RSET. The ILIM variation is
due to processing variations from part to part, as well as
variations in the voltages at IN and OUT, plus the operating temperature. See charts “Current Limit vs.
Temperature” and “Output Current vs. VOUT.” Together,
these three factors add up to a ±25% tolerance (see ILIM
specification in Electrical Characteristics section). Figure
1 illustrates a cold device with a statistically higher current limit and a hot device with a statistically lower current limit, both with RSET equal to 8.87kΩ. While the
chart, "RSET vs. ILIM” indicates an ILIM of 1.1A with an RSET
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 RSET, start with the maximum current drawn
by the load and multiply it by 1.33 (typical ILIM = minimum ILIM / 0.75). This is the typical current limit value.
Next, refer to “RSET vs. ILIM” and find the RSET that corresponds to the typical current limit value. Choose the
8
largest resistor available that is less than or equal to it.
For greater precision, the value of RSET may also be calculated using the ILIM RSET product found in the chart “RSET
Coefficient vs. ILIM.” The maximum current is derived by
multiplying the typical current for the chosen RSET in the
chart by 1.25. A few standard resistor values are listed
in Table 1.
Current Limit vs. Output Voltage
(RSET = 8.87kΩ)
1.6
IMAX = 1.375A
1.4
Current Limit (A)
Application Information
Device with high current limit at -40°C
1.2
1.0
Device with low current limit at 85°C
0.8
IMIN = 0.825A
0.6
0.4
0.2
0
0
1
2
3
4
Output Voltage (V)
Figure 1: Current Limit Using 10.5kΩ.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
5
DATA SHEET
AAT4610B
Current Limited Load Switch
Operation in Current Limit
RSET
(kΩ)
Current
Limit Typ
(mA)
Device Will
Not Current
Limit Below
(mA)
Device Always
Current Limits
Below (mA)
40.2
30.9
24.9
22.1
19.6
17.8
16.2
14.7
13
10.5
8.87
7.5
6.81
6.04
5.49
4.99
4.64
225
300
350
425
450
525
600
675
700
1000
1100
1325
1600
1925
1950
2100
2350
169
225
263
319
338
394
450
506
525
750
825
994
1200
1444
1463
1575
1763
281
375
438
531
563
656
750
844
875
1250
1375
1656
2000
2406
2438
2625
2938
When a heavy load is applied to the output of the
AAT4610B, the load current is limited to the value of ILIM
determined by RSET (see Figure 2). Since the load is
demanding more current than ILIM, the voltage at the
output drops. This causes the AAT4610B to dissipate a
larger than normal quantity of power, and its die temperature 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 integrated 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.
Table 1: Current Limit RSET Values
Example: A USB port requires 0.5A. 0.5A multiplied by
1.33 is 0.665A. From the chart named “RSET vs. ILIM,” RSET
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 ILIM value for
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.
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.
Overload Operation
1
0.5
0.25
0
5
Output Current
4
3
1A load is turned on at time = 0
Output Voltage
2
Output Current (A)
Output Voltage (V)
0.75
1
0
-0.05
0
0.05
0.1
0.15
0.2
0.25
0.3
Figure 2: Overload Operation.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
9
DATA SHEET
AAT4610B
Current Limited Load Switch
Ordering Information
Package
Enable
Marking1
Part Number (Tape and Reel)2
SOT23-5
SC70JW-8
SOT23-5
SC70JW-8
ON (active high)
ON (active high)
ON (active low)
ON (active low)
8FXYY
8GXYY
B9XYY
B8XYY
AAT4610BIGV-1-T1
AAT4610BIJS-1-T1
AAT4610BIGV-T1
AAT4610BIJS-T1
Skyworks Green™ products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to Skyworks
Definition of Green™, document number
SQ04-0074.
Package Information
SOT23-5
2.85 ± 0.15
1.90 BSC
0.075 ± 0.075
10°° ± 5°°
0.40 ± 0.10
0.15 ± 0.07
GAUGE PLANE
4°° ± 4°°
1.10 ± 0.20
0.60 REF
1.20 ± 0.25
2.80 ± 0.20
1.575 ± 0.125
0.95
BSC
0.60 REF
0.45 ± 0.15
0.10 BSC
All dimensions in millimeters.
1. XYY = assembly and date code.
2. Sample stock is generally held on part numbers listed in BOLD.
10
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
DATA SHEET
AAT4610B
Current Limited Load Switch
SC70JW-8
2.20 ± 0.20
1.75 ± 0.10
0.50 BSC 0.50 BSC 0.50 BSC
0.225 ± 0.075
2.00 ± 0.20
0.100
7° ± 3°
0.45 ± 0.10
4° ± 4°
0.05 ± 0.05
0.15 ± 0.05
1.10 MAX
0.85 ± 0.15
0.048REF
2.10 ± 0.30
All dimensions in millimeters.
Copyright © 2012 Skyworks Solutions, Inc. All Rights Reserved.
Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a
service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to update the materials or information and shall have no
responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes.
No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of Sale.
THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A PARTICULAR
PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED. SKYWORKS DOES
NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM
THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury, death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper
use or sale.
Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product
design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters.
Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for
identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201937A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2012
11