DATA SHEET
AAT4687: Over-Voltage Protection Switch
Applications
Description
Cell phones
The AAT4687 OVPSwitch™ is a member of the Skyworks
Application Specific Power MOSFET (ASPM™) product family. It is
a P-channel MOSFET power switch with precise over-voltage
protection control, designed to protect low-voltage systems
against high-voltage faults up to +28 V. If the input voltage
exceeds the programmed over-voltage threshold, the P-channel
MOSFET switch is turned off to prevent damage to the output load
circuits. The AAT4687 is available with an internally programmed
over-voltage trip point or as an adjustable version programmed by
two external resistors.
Digital still cameras
GPS
MP3 players
Personal data assistants (PDAs)
USB hot-swap/live-insertion devices
Features
Over-voltage protection up to 28 V
Fixed or adjustable over-voltage protection threshold
3 V under-voltage lockout threshold
Fast OVP response:
0.7 s typical to over-voltage transient
Low operation quiescent current:
30 A typical
1 A max in shutdown (disabled)
Thermal shutdown protection
100 m typical (130 m Max.) RDS(ON) at 5 V
The AAT4687 includes an under-voltage lockout (UVLO) protection
circuit, which puts the device into sleep mode at low input
voltages, consuming less than 1 A of current. The AAT4687 also
includes an enable pin (EN) to enable or disable the device and an
OVP, OTP fault indicator (FLT).
The AAT4687 is offered in a small 10-pin, 2.2 mm 2.0 mm
SC70JW package, and is specified for operation over the 40 °C
to +85 °C ambient temperature range.
A typical application circuit is shown in Figure 1. The pin
configurations are shown in Figure 2. Signal pin assignments and
functional pin descriptions are provided in Table 1.
OVP, OTP fault indicator
1.8 A maximum continuous current
VIO + 5 V
VIN
3 V ~ 28 V
Temperature range: 40 °C to +85 °C
SC70JW (10-pin, 2.2 mm 2.0 mm) package (MSL1, 260 ºC
per JEDEC J-STD-020)
IN
OVP
R2
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.
VOUT
COUT
1 μF
AAT4687
R1
CIN
1 μF
OUT
EN
FLT
GND
Fault Flag
tc220
Figure 1. AAT4687 Typical Application Circuit
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DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH
OVP
GND
FLT
EN
IN
1
10
2
9
3
8
4
7
5
6
N/C
GND
FLT
EN
IN
GND
GND
GND
OUT
OUT
(a) Adjustable Version
1
10
2
9
3
8
4
7
5
6
(b) Fixed Version
GND
GND
GND
OUT
OUT
tc221
Figure 2. AAT4687 Pinout – 10-Pin, 2.2 mm 2.0 mm SC70JW
(Top View)
Table 1. AAT4687 Signal Descriptions
Pin Number
Adjustable
Fixed
1
N/C
Name
Description
OVP
Over-voltage protection threshold input (adjustable only). In the fixed version, this pin is not connected.
GND
Ground connection pin.
FLT
Over-voltage or over-temperature fault reporting output pin. Open drain. FLT goes low when input voltage exceeds the
over-voltage threshold or an over-temperature fault occurs. An external pull up resistor to VIO (6.5 V max) should be added.
EN
Enable input pin, active low. An internal pull-down resistor is connected on this pin. Connect to ground for normal
operation. Connect to high (6.5 V Max) to shut down the device, which then draws less than 1 A of current.
5
IN
Power input pin. Connect 1 F capacitor from IN to GND.
6, 7
OUT
2, 8, 9, 10
3
4
Output. Connect a 0.1 F ~ 47 F capacitor from OUT to GND.
Electrical and Mechanical Specifications
Typical performance characteristics of the AAT4687 are shown in
Figures 3 through 20
The absolute maximum ratings of the AAT4687 are provided in
Table 2, the thermal information is listed in Table 3, and electrical
specifications are provided in Table 4.
Table 2. AAT4687 Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Minimum
Maximum
Units
0.3
+30
V
IN to GND
VIN
OVP to GND
VOVP
0.3
+6.5
V
FLT, EN to GND
VFLT, VEN
0.3
+6.5
V
OUT to GND
VOUT
0.3
VIN + 0.3
V
Maximum continuous switch current
IMAX
1.8
A
Operating junction temperature range
TJ
40
150
ºC
Storage temperature
TSTG
40
150
ºC
Maximum soldering temperature (at leads)
TLEAD
300
ºC
Note 1:
Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
parameters set at or below their nominal value. Exceeding any of the limits listed may result in permanent damage to the device.
Table 3. AAT4687 Thermal Information
Parameter
Symbol
Value
Units
Maximum thermal resistance (Note 1)
JA
160
ºC/W
Maximum power dissipation (Note 1, Note 2)
PD
625
mW
Note 1:
Mounted on an FR4 board.
Note 2:
Derate 6.25 mW/°C above 25 °C.
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DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH
CAUTION: Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device. This device
must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body
or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times.
Table 4. AAT4687 Electrical Specifications (Note 1)
(VIN = 5 V, TA = –40 C to +85C, Unless Otherwise Noted, Typical Values are TA = 25 C)
Parameter
Symbol
Input over-voltage protection range
VIN_MAX
Normal operating input voltage range
VIN
Operation quiescent current
IQ
Test Condition
Min
Typical
Max
Units
28
V
14
V
30
60
A
1
A
3.0
3.3
V
3
VIN = 5 V, EN = 0 V, IOUT = 0 A
Shutdown supply current
ISD(OFF)
EN = VIN, VIN = 5.5 V, VOUT = 0 V
Under-voltage lockout threshold
VUVLO
Rising edge
Under-voltage lockout threshold hysteresis
VUVLO_HYS
0.1
V
Adjustable
Over-voltage lockout threshold, OVP pin
VOVP_TH
Over-voltage lockout threshold hysteresis,
OVP pin
VOVP_HYS
Rising edge
1.084
1.1
1.117
V
23
mV
6.5
V
2.1
% of
VOVPT
Fixed
Over-voltage lockout threshold, IN pin
(Note 2)
VOVPT
Over-voltage lockout threshold hysteresis,
IN pin
VOVP_HYS
Rising edge
MOSFET Switch
PMOS On-resistance
RDS(ON)
IOUT = 1500 mA, TA = 25 °C
Switch Off-leakage
ID(OFF)
EN = VIN
100
130
m
1
A
0.4
V
Logic
EN input low voltage
VEN(L)
EN input high voltage
VEN(H)
1.6
EN input leakage
IEN
VEN = 5.5 V or 0 V
FLT output voltage low
FLTOL
IFLT = 1 mA
FLT output leakage current
FLTIOL
V
0.5
2.0
A
0.4
V
1
A
15
ms
Timing
FLT blanking time
tBLK_FLT
From de-assertion of OV
5
10
FLT assertion delay time from over-voltage
(OV)
tD_FLT
From assertion of OV
Over-voltage release time
tRLS_OV
VIN = 5 V, VOVP fall from 1.13 V to 1.07 V in 1 ns
Over-voltage response time
tRESP_OV
VIN = 5V, VOVP rise from 1.07 V to 1.13 V in 1 ns
0.7
s
Turn on delay time
tON
VIN = 5V; ROUT = 10 ; COUT = 1 F
10
ms
Turn on rise time
tR
VIN = 5V; ROUT = 10 ; COUT = 1 F
1
ms
Turn off delay time
tOFF
VIN = 5V; ROUT = 10 ; COUT = 1 F
9
ms
Turn off fall time
tF
VIN = 5V; ROUT = 10 ; COUT = 1 F
4.5
ms
s
1
5
10
15
ms
Thermal Protection
Shutdown temperature
TSHDN
150
°C
Over-temperature shutdown hysteresis
THYS
20
°C
Note 1:
Performance is guaranteed only under the conditions listed in this table.
Note 2:
Fixed OVP Threshold Voltage Version is available from 5 V to 14 V at 50 mV step.
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DATA SHEET • AAT4687: SINGLE CELL LI+ SWITCH MODE BATTERY CHARGER
Typical Performance Characteristics
(VIN = 5 V, TA = –40 C to +85C, Unless Otherwise Noted, Typical Values are TA = 25 C)
90
40
Quiescent Current (μA)
Quiescent Current (μA)
80
70
60
50
40
30
35
30
25
20
10
3
4
5
6
7
8
9
10
11
12
13
15
-40
14
tc223
tc222
20
-15
85
0.42
3
2.4
1.8
1.2
tc224
0.6
4
6
8
10
12
14
16
18
20
22
24
26
0.35
0.28
0.21
0.14
0.07
0.00
-40
28
tc225
3.6
Shutdown Supply Current (μA)
4.2
Shutdown Supply Current (μA)
60
Figure 4. Operation Quiescent Current vs Temperature
(VIN = 5 V, No Load)
Figure 3. Operation Quiescent Current vs Supply Voltage
-15
10
35
60
85
Temperature (°C)
Supply Voltage (V)
Figure 5. Shutdown Supply Current vs Supply Voltage
Figure 6. Shutdown Supply Current vs Temperature
(VIN = 6.5 V)
0.014
160
On-Resistance (mΩ)
0.012
0.010
0.008
0.006
0.004
140
120
100
80
0.000
2
4
6
8
10
12
14
16
18
20
22
24
26
Supply Voltage (V)
Figure 7. Switch Off Leakage vs Supply Voltage
28
60
-40
tc227
0.002
tc226
Switch Off Leakage Current (μA)
35
Temperature (°C)
Supply Voltage (V)
0
2
10
-15
10
35
60
85
Temperature (°C)
Figure 8. PMOS On-Resistance vs Temperature
(VIN = 5 V, ILOAD = 1 A)
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DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH
13
OVP
(1 V/div)
12
11
tBLK_FLT (ms)
VOUT
(2 V/div)
IOUT
(500 mA/div)
10
9
tc228
7
-40
tc229
8
FLT
(5 V/div)
-15
Figure 9. FLT Blanking Time (VIN = 5 V, COUT = 1 F, OVP
Transient from 1.2 V to 0.8 V, ROUT = 10 )
85
13
UVLO_Hi
UVLO_Low
12
tRLS_OV (ms)
3.30
3.10
2.90
11
10
9
tc230
2.70
-15
10
35
60
8
-40
85
tc231
UVLO Threshold (V)
60
Figure 10. FLT Blanking Time vs Temperature
3.50
-15
10
35
60
85
Temperature (°C)
Temperature (°C)
Figure 12. Over-Voltage Release Time vs Temperature
(VIN = 5 V, COUT = 1 F, ROUT = 10 )
Figure 11. Under-Voltage Lockout Threshold vs Temperature
800
1.12
OVP_Threshold_Hi
OVP_Threshold_Low
1.11
750
1.10
tRESP_OV (ns)
OVP Threshold (V)
35
Temperature (°C)
Time (2 ms/div)
2.50
-40
10
1.09
1.08
700
650
1.07
600
1.05
-40
-15
10
35
60
85
Temperature (°C)
Figure 13. Over-Voltage Lockout Threshold vs Temperature
550
-40
tc233
tc232
1.06
-15
10
35
60
85
Temperature (°C)
Figure 14. Over-Voltage Response Time vs Temperature
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1.4
1.4
1.3
1.3
1.2
1.2
VEN(L) (V)
1.1
1.1
1
1
0.8
3
4
5
6
7
8
9
10
11
12
13
−40 °C
25 °C
85 °C
0.9
tc234
−40 °C
25 °C
85 °C
0.9
0.8
3
14
4
5
6
7
8
9
10
11
12
13
14
Supply Voltage (V)
Supply Voltage (V)
Figure 16. EN Input Low Voltage vs Supply Voltage
Figure 15. EN Input High Voltage vs Supply Voltage
5.0 V
VOUT
(2 V/div)
VOUT
(2 V/div)
tc235
VEN(H) (V)
DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH
0V
EN
(2 V/div)
0V
EN
(2 V/div)
tc236
tc237
0V
Time (2 ms/div)
Time (2 ms/div)
Figure 18. Turn Off Delay Time (VIN = 5 V, ROUT = 10 )
Figure 17. Turn On Delay Time (VIN = 5 V, ROUT = 10 )
VIN
(5 V/div)
OVP
(1 V/div)
OVP
(1 V/div)
0.7 μs
VOUT
(100 mV/div)
VOUT
(2 V/div)
tc238
tc239
FLT
(5 V/div)
FLT
(5 V/div)
Time (5 μs/div)
Figure 19. Over-Voltage Protection Response
Time (500 ns/div)
Figure 20. Over-Voltage Response Time
(VIN = 5 V, OVP Transient from 0.8 V to 1.2 V)
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DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH
Fixed Option
(metal programable)
IN
OUT
FLT
OVP
Sense
and
Control
OVP
EN
GND
tc240
Figure 21. AAT4687 Functional Block Diagram
Functional Description
The AAT4687 provides up to 28 V over-voltage protection when
powering low-voltage systems such as cell phones, MP3
players, and PDAs or when charging Lithium-Ion batteries from
a poorly regulated supply. The AAT4687 is inserted between the
power supply or charger source and the load to be protected.
The AAT4687 IC includes a low-resistance P-channel MOSFET,
under-voltage lockout protection, over-voltage monitor, fast
shut-down circuitry, and a fault output flag.
In normal operation, the P-channel MOSFET acts as a slew-rate
controlled load switch, connecting and disconnecting the power
supply from IN to OUT. A low-resistance MOSFET is used to
minimize the voltage drop between the voltage source and the
load and to reduce power dissipation. When the voltage on the
input exceeds the over-voltage protection trip voltage (internally
set in the fixed voltage version or externally by a voltage divider
to the OVP pin for the adjustable version), the device
immediately turns off the internal P-channel FET, disconnecting
the load from the input and preventing damage to downstream
components. Simultaneously, the fault flag is raised, alerting
the system to a problem.
If an over-voltage condition is applied at the time of the device
enable, then the switch will remain OFF.
A functional block diagram is shown in Figure 21. Figure 22
shows the timing diagram.
Under-Voltage Lockout (UVLO)
The AAT4687 has a fixed 3.0 V under-voltage lockout level
(UVLO). When the input voltage is less than the UVLO level, the
MOSFET is turned off. Hysteresis of 100 mV is included to
ensure circuit stability.
Over-Voltage Protection (OVP)
The AAT4687 adjustable version has a 1.1 V ±1.5%
overvoltage trip threshold on the OVP pin. With a resistor
divider on the OVP pin from IN to GND, the over-voltage trip
point can be adjusted anywhere within the input voltage range
(see Table 5). Once the over-voltage trip level is triggered, the
PMOS switch controller will turn off the PMOS in less than
0.7 s.
In the AAT4687 fixed version, the resistor divider is internally
integrated with the input voltage trip point at 6.5 V. The fixed
version of the AAT4687 does not have a connection to the
internal OVP circuitry, and Pin 1 is designed to be left
unconnected.
Over-Temperature Protection (OTP)
If the ambient temperature of the device exceeds TSHDN, the
OVP switch is turned off, and the pin is driven low. The OVP
switch recovers automatically when the junction temperature
falls below (TSHDN 20 °C).
Fault Indicator (FLT)
The output is an active-low open-drain fault reporting output. A
pull-up resistor should be connected from FLT to the logic I/O
voltage of the host system. FLT is asserted immediately if an
over-voltage or over-temperature fault occurs.
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DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH
VOVPT
IN
VOVPT
tD_FLT
tBLK_FLT
FLT
tRESP_OV
tRLS_OV
OUT
50%
EN
tOFF
tON
OUT
90%
50%
10%
90%
50%
10%
tF
tR
tc244
Figure 22. AAT4687 Timing Diagram
Enable Control (EN)
EN is an active-low enable input. EN is driven low, connected to
ground, or left floating for normal device operation. Taking EN
high turns off the MOSFET. In case of an over-voltage or UVLO
condition, toggling EN does not override the fault condition and
the switch remains off.
Device Operation
On initial power-up, if VIN < VUVLO or if VOVP > VOVP_TH (1.1 V),
the PMOS is held off. If VUVLO < VIN, VOVP < VOVP_TH, and EN is
low, the device enters startup after a 10 ms internal delay.
and the sensitive devices, they are insulated from the voltage
spike, and the input supply is disconnected in 0.7 s.
Figure 23 shows the over-voltage protection response time test
circuit, with R1 = 487 k, R2 = 110 k, COUT = 1 F and
ROUT = 10 . Figure 24 is the typical over-voltage response
time curve. The input voltage is rapidly increased from 5 V to
12 V by a voltage surge or voltage spike. The voltage at the OVP
pin is also increased until it reaches the over-voltage trip point.
At this point, the FLT pin is pulled low and the output voltage
starts to fall. Figure 25 shows a zoom-in scope capture of the
OVP response time; the output is disconnected from the input in
as little as 0.7 s.
Application Information
Adjustable Version - Over-Voltage Protection Resistors
Over-Voltage Protection
The over-voltage protection threshold is programmed with two
resistors: R1 and R2. To limit current flow through the external
resistor string while maintaining good noise immunity, use
smaller resistor values, such as 10 k for R2. Using a larger
value further reduces system current, but also increases the
impedance of the OVP node, making it more sensitive to
external noise and interference. A suggested value for R2 is
110 k. In the case of R2 = 110 k and VOVP_TH = 1.1 V, R1
can be approximated by the following formula:
The AAT4687 over-voltage protection circuit provides fast
protection against transient voltage spikes and short duration
spikes of high voltage from the power supply lines. The
AAT4687 can quickly disconnect the input supply from the load
and avoid damage to sensitive components.
In portable product applications, removing the battery pack
during charging can create large transients, and a high voltage
spike can occur which can damage other electronic
components (such as the battery charger) in the product. A "hot
plug" of the AC/DC wall adapter into the AC outlet can create
and release a voltage spike from the transformer. As a result,
some sensitive components within the product can be
damaged. Whe the AAT4687 is placed between the power lines
V
V
R1 OVPT 1 R2 OVPT 1 110
VOVP _ TH
.
1
1
Where the voltage is in V, resistance in k.
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DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH
SCOPE
+12 V
LOAD
AAT4687
VIN
+5 V
1
2
3
4
OVP
8
7
6
5
GND
10
GND
VOUT
Fault
tc241
Figure 23. Over-Voltage Protection Response Time Test Circuit
Table 5 summarizes resistor values for various over-voltage
settings. Use 1% tolerance metal film resistors for programming
the desired OVP setting.
VIN
(5 V/div)
OVP
(1 V/div)
VOUT
(2 V/div)
Table 5. Recommended OVP Setting for the Adjustable Version
tc238
FLT
(5 V/div)
Time (5 μs/div)
Figure 24. Typical Over-Voltage Response Time
OVP
(1 V/div)
0.7 μs
VOUT
(100 mV/div)
R2 (k)
R1 (k)
VOVPT Setting (V)
110
387
5.0
110
487
6.0
110
536
6.5
110
787
9.0
110
1000
11.0
110
1300
14.0
110
1540
16.5
110
1780
19.0
110
2050
21.5
110
2320
24.0
110
2550
26.5
tc239
FLT
(5 V/div)
Time (500 ns/div)
Figure 25. Typical Over-Voltage Response (Zoom View)
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DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH
Input Capacitor
A 1 F or larger capacitor is typically recommended for CIN. CIN
should be located as close to the device VIN pin as practically
possible. Ceramic, tantalum, or aluminum electrolytic
capacitors may be selected for CIN. There is no specific
capacitor equivalent series resistance (ESR) requirement for CIN.
However, for higher current operation, ceramic capacitors are
recommended for CIN due to their inherent capability over
tantalum capacitors to withstand input current surges from low
impedance sources such as batteries in portable devices.
Capacitors are typically manufactured in different voltage
ratings. If the maximum possible surge voltage is known, select
capacitors with a voltage rating at least 5 V higher than the
maximum possible surge voltage. Otherwise, 50 V rated
capacitors are generally good for most OVP applications to
prevent any surge voltage.
Output Capacitor
A 0.1 F 47 F output capacitor is required at the output.
Likewise, with the output capacitor, there is no specific
capacitor ESR requirement. COUT may be increased to
accommodate any load transient condition.
Thermal Considerations and Maximum Output Current
The AAT4687 is designed to deliver a continuous output load
current. The limiting characteristic for maximum safe operating
output load current is package power dissipation. In order to
obtain high operating currents, careful device layout and circuit
operating conditions must be taken into account. The following
description assumes the load switch is mounted on a printed
circuit board utilizing the minimum recommended footprint in
the Printed Circuit Board Layout Recommendations section. At
any given ambient temperature (TA), the maximum package
power dissipation can be determined by the following equation:
PD( MAX )
TJ ( MAX ) TA
JA
Constants for the AAT4687 are maximum junction temperature
(TJ(MAX) = +125 °C) and package thermal resistance
(JA = 160 °C/W). Worst-case conditions are calculated at the
maximum operating temperature, TA = +85 °C. Typical
conditions are calculated under normal ambient conditions
where TA = +25 °C. At TA = +85 °C, PD(MAX) = 250 mW. At
TA = +25 °C, PD(MAX) = 625 mW.
The maximum continuous output current for the AAT4687 is a
function of the package power dissipation and the RDS of the
MOSFET at TJ(MAX). The maximum RDS of the MOSFET at TJ(MAX)
is calculated by increasing the maximum room temperature.
For maximum current, refer to the following equation:
I OUT ( MAX )
PD( MAX )
RDS
The maximum allowable output current for the AAT4687 is
1.8 A. If the output current exceeds 1.8 A, the device is
damaged.
Printed Circuit Board Layout Recommendations
For proper thermal management and to take advantage of the
low RDS(ON) of the AAT4687, certain circuit board layout rules
should be followed:
VIN and VOUT should be routed using wider than normal traces,
and GND should be connected to a ground plane.
To maximize package thermal dissipation and power handling
capacity of the AAT4687 SC70JW-10 package, the ground
plane area connected to the ground pins should be as large as
possible.
For best performance, CIN and COUT should be placed close to
the package pins.
Evaluation Board Description
The AAT4687 Evaluation Board is used to test the performance
of the AAT4687. An Evaluation Board schematic diagram is
provided in Figure 26. Layer details for the Evaluation Board are
shown in Figure 27. The Evaluation Board has additional
components for easy evaluation, and the bill of materials
required for the system is shown in Table 6.
Package Information
Package dimensions for the 10-pin SC70JW package are shown
in Figure 28. Tape and reel dimensions are shown in Figure 29.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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June 3, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 201962C
DATA SHEET • AAT4687: SINGLE CELL LI+ SWITCH MODE BATTERY CHARGER
+5 V
DS
Red LED
VIN
U1
AAT4687
R1
499 kΩ
C1
1 μF
5
8
9
10
1
IN
GND
GND
GND
OVP
FLT
OUT
OUT
EN
GND
3
7
6
4
2
VOUT
R
1.5 kΩ
C3
C2
1 μF
R2
110 kΩ
JP1
Enable
tc242
Figure 26. AAT4687 Evaluation Board Schematic
Table 6. AAT4687 Evaluation Board Bill of Materials
Component
Part number
Description
Manufacturer
U1
AAT4687
Over-voltage protection switch
Skyworks
R1
RC0603FR-07499KL
Resistor 499 k 1/10W 1% 0603 SMD
Yageo
R2
RC0603FR-07110KL
Resistor 110 k 1/10W 1% 0603 SMD
Yageo
R3
RC0603FR-071K5L
Resistor 1.5 k 1/10W 1% 0603 SMD
Yageo
C1
GRM31MR71H105K
Ceramic capacitor 1 F 1206 X7R 50V 10%
Murata
C2
GRM21BR71C105K
Ceramic capacitor 1 F 0805 X7R 16V 10%
Murata
C3
Not populated
D1
0805KRCT
HB
Red LED 0805
(a) Component Side Layout
HB
(b) Solder Side Layout
tc243
Figure 27. AAT4687 Evaluation Board Layer Details
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201962C • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • June 3, 2014
9
DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH
Pin 1 Location
2.20 ± 0.20
1.75 ± 0.10
0.40 BSC
0.225 ± 0.075
Top View
0.45 ± 0.10
0.100
0.05 ± 0.05
0.15 ± 0.05
1.10 MAX
0.85 ± 0.15
2.00 ± 0.20
4°° ± 4°°
2.10 ± 0.30
7°° ± 3°°
Side View
End View
All dimensions in millimeters.
tc37
Figure 28 AAT4687 10-pin SC70JW Package Dimensions
4.00 ± 0.10
1.75 ± 0.05
1.30 ± 0.10
2.00 ± 0.05
1.55 ± 0.05
8.00 ± 0.30
3.50 ± 0.05
2.50 ± 0.10
Pin 1 Location
2.40 ± 0.10
0.20 ± 0.03
4.00 ± 0.10
All dimensions are in millimeters.
tc38
Figure 29. AAT4687 10-pin SC70JW Tape and Reel Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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June 3, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 201962C
DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH
Ordering Information
Model Name
OVP Trip Voltage
Adjustable
Part Marking
(Note 1)
7QXYY
Manufacturing Part Number (Note 2)
Evaluation Board Part Number
AAT4687IJQ-T1
AAT4687IJQ-EVB
AAT4687IJQ-6.5-T1
AAT4687IJQ-6.5-EVB
AAT4687 over-voltage protection switch
6.5 V
Note 1: XYY = assembly and date code.
Note 2: Sample stock is generally held on part numbers listed in BOLD.
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