Analogic AAT4626IHS-1-T1 Usb dual-channel power switch Datasheet

AAT4626
USB Dual-Channel Power Switch
SmartSwitch™
General Description
Features
The AAT4626 SmartSwitch™ is part of
AnalogicTech's Application Specific Power
MOSFET™ (ASPM™) product family. It is a dualchannel 500mA 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 systems. An integrated current-limiting circuit protects the input supply against large changes
in load current which may cause the supply to fall
out of regulation. The AAT4626 is also protected
from thermal overload which limits power dissipation and junction temperatures. The current limit
threshold is factory programmed at 1.0A, with a
maximum of 1.5A. The quiescent supply current is
typically a low 20µA. In shutdown mode, the supply
current decreases to less than 1µA.
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The AAT4626 is available in 8 pin SOP or TSSOP
specified over a -40 to 85°C temperature range.
Preliminary Information
•
•
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•
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Compliant to USB 1.1 and 2.0 specifications
2.7V to 5.5V Input voltage range
500mA (min) continuous current per channel
1.25A (max) current limit per channel
90mΩ typical R DS(ON)
Low quiescent current
• Typically 20µA
• 1µA max with Switches off
Thermal shutdown
Slew rate limited turn on
Fault flag with 2ms blanking
Undervoltage Lockout
Temp range -40 to 85°C
UL Approved—File No. E217765
8 pin SOP or TSSOP package
Applications
The AAT4600 Series is a family of adjustable and
fixed SmartSwitch™ products with a range of current handling capabilities. Single versions with
adjustable current limit (AAT4601) or fixed current
limit (AAT4625) as well as dual versions with fixed
current limit (AAT4626) are also available.
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•
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USB ports and peripherals
Notebook computers
Hot swap supplies
General purpose power switching
UL Recognized Component
Typical Application
100kΩ
100kΩ
VCC 5.0V
FLGA
ENA
(ENA)
1
ENA
(ENA)
AAT4626
FLGB
OUTA
ENB
(ENB)
4
ENB
OUTB
(ENB)
2
3
OUTPUTA
8
OUTPUTB
5
0.1µF
6
47µF
GND
4626.2002.1.0.93
47µF
GND
1
AAT4626
USB Dual-Channel Power Switch
Pin Descriptions
Pin #
Symbol
Function
1/4
EN(A/B)
(EN(A/B))
Enable Inputs: Logic-compatible enable input. High input > 2.1V typical. Low
input < 1.9V typical. Active high or active low option available; see Ordering
Information for details.
2/3
FLG(A/B)
Fault Flag Outputs: Active-low, open-drain output. Indicates over current,
UVLO and thermal shutdown.
6
GND
Ground connection
7
IN
Supply Input: This pin is the P-channel MOSFETs' source connections. Also
supplies the IC's internal circuitry.
OUT(A/B)
Switch Outputs: These pins are the P-channel MOSFET drain connection.
8/5
Pin Configuration
SOP-8
(Top View)
ENA (ENA)
FLGA
FLGB
ENB (ENB)
1
2
8
7
2
2
OUTA
IN
GND
OUTB
1
ENB (ENB)
2
FLGA
FLGB
1
ENA (ENA)
TSSOP-8
(Top View)
3
6
4
5
OUTA
IN
GND
OUTB
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AAT4626
USB Dual-Channel Power Switch
Absolute Maximum Ratings
Symbol
VIN
VFLG
IFLG
VOUT
IOUT
VEN
TS
TLEAD
(TA=25°C unless otherwise noted)
Description
IN to GND
FLGA, FLGB to GND
FLGA, FLGB Current
OUTA, OUTB to GND
Output Current
EN (EN) to GND
Storage Temperature
Maximum Soldering Temperature (at Leads)
Value
Units
-0.3 to 6
-0.3 to 6
50
-0.3 to VIN+0.3
Internally Limited
-0.3 to 6
150
300
V
V
mA
V
V
°C
°C
Note: 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.
Thermal Information
Symbol
ΘJA
PD
Description
1
Maximum Thermal Resistance (SOP-8)
Maximum Power Dissipation (SOP-8)1
Value
Units
100
1.25
°C/W
W
Note 1: Mounted on an FR4 printed circuit board with 1 oz. copper ground plane.
Electrical Characteristics (VIN = 5V, TA = -40 to 85°C unless otherwise noted. Typical values
are at TA=25°C; bold values designate full temperature range)
Symbol
Iq
VIN-THRSH
IEN
CEN
Rds(ON)
TON
TON-RISE
TOFF
TOFF-FALL
ISD(OFF)
ILIMIT
Description
Conditions
Quiescent Current
VIN=5V, ENA and ENB active
Low-to-high transition
High-to-low transition
VEN = 0V to 5.5V
Enable Input Threshold
Enable Input Current
Enable Input Capacitance
On-Resistance
Output Turn-On Delay
Output Turn-On Rise Time
Output Turn-Off Delay
Output Turn-Off Fall Time
Output Leakage Current
Current Limit Threshold
OTMP
Over Temperature Shut Down
RFLG
ISINK
VUVLO
TBLANK
Error Flag Output Resistance
Error Flag Off Current
Under voltage Lockout
Fault blanking
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VIN =5V, each switch, TA = 25°C
VIN =3.0V, each switch, TA = 25°C
VIN =5V, RL = 10Ω
RL = 10Ω
VIN =5V, RL = 10Ω
RL = 10Ω
EN=inactive, VIN=5.5V, VOUT=0V
ramped load applied to enable
output, VOUT < 4.0V
TJ increasing
TJ decreasing
VIN =5V, IL = 1mA
VFLG = 5.5V
VIN =increasing, 1% hysterisis
Min
Typ
Max
Units
20
40
2.4
0.01
1
90
100
0.25
0.2
5
1
µA
V
V
µA
pF
mΩ
mΩ
ms
ms
µs
µs
µA
A
0.8
0.75
2.0
0.03
1.0
125
115
30
0.05
2.3
2
130
150
20
20
1
1.50
1
2.7
°C
°C
Ω
µA
V
ms
3
AAT4626
USB Dual-Channel Power Switch
Typical Characteristics
(Unless otherwise noted, VIN = 5V, TA = 25°C)
Quiescent Current
30
25
25
20
Input (µA)
Quiescent Current (µA)
Quiescent Current vs. Temperature
20
15
10
2 channels enabled
15
10
1 channel enabled
5
5
0
0
-40
-20
0
20
40
60
80
100
120
0
1
2
Temperature (°C)
5
6
1.0000
Off-Switch Current (µA)
1.4
1.2
Output (A)
4
Off-Supply Current vs. Temperature
Current Limit
1
0.8
0.6
0.4
0.2
0.1000
0.0100
0.0010
0
0
1
2
3
4
-40
5
-20
0
20
40
60
80
100
120
100
120
Temperature (°C)
Output (V)
Off-Switch Current vs. Temperature
Rdson vs. Temperature
1.0000
Off-Switch Current (µA)
3
Input (V)
140.0
(Both switches)
130.0
0.1000
120.0
110.0
0.0100
Vin=3V
100.0
90.0
0.0010
Vin=5V
80.0
70.0
0.0001
60.0
-40
0.0000
-40
-20
0
20
40
60
80
100
120
-20
0
20
40
60
80
Temperature (°C)
Temperature (°C)
4
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AAT4626
USB Dual-Channel Power Switch
(Unless otherwise noted, VIN = 5V, TA = 25°C)
Turn-ON/OFF Response with
10 Ohm 1µF load
Start Into 1 Ohm load
EN (5V/div)
EN (5V/div)
FAULT (5V/div)
FAULT (5V/div)
Vout (1V/div)
Vout (2V/div)
Iin (500 mA/div)
Iin (200mA/div)
200 µs/div
100µs/div
Short Circuit Through 0.3 Ohm
Thermal Shutdown Response
Input and Output (V)
FAULT (5V/div)
Vout (1V/div)
Iin (500mA/div)
12
Input Voltage
6
4
8
4
Output Current
2
Output (A)
8
EN (5V/div)
0
Output Voltage
0
-4
-1
0
1
2
3
4
5
Time (µs)
100ms / div
6
4
2
Input Voltage
6
Output Current
3
Output Voltage
0
Output (A)
Input and Output (V)
Short Circuit Through 0.6 Ohm
-3
0
-1
0
1
2
3
4
5
Time (µs)
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5
AAT4626
USB Dual-Channel Power Switch
Functional Block Diagram
OUT A
IN
Over-Temp
Protection
OUT B
UnderVoltage
Lockout
EN B (EN B)
EN A (EN A)
1.2V
Reference
Current
Limit
Over-Temp Protection
Under-Voltage Lockout
FLG A
Current Limit
Over-Temp Protection
Under-Voltage Lockout
FLG B
Current Limit
Functional Description
The AAT4626 is a dual integrated MOSFET load
switch with a fixed level current limit, over temperature protection, level shifted inputs and a fault flag
for each switch. 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 conditions. The AAT4626 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 activated when the output load current exceeds a preset internal threshold level. The minimum current
limit threshold characteristic is specified by ILIM(MIN).
If the load switch ambient temperature becomes
excessive or if a short circuit condition 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 ten milliseconds,
6
the system will be informed via the FAULT Flag.
The ten millisecond fault blanking delay allows the
AAT4626 to be turned on into large capacitive
loads without activating the FAULT Flags. The
open drain FAULT outputs can be connected
directly to system controllers driven by voltage levels less than the IN pin voltage without additional
level shifting circuitry.
Each of the two load switches is turned on and off
by applying a logic level signal to the EN(A/B) pin.
The AAT4626 enable function is available in both
active high and active low logic level versions. The
AAT4626 typically consumes 20µA when operating, when off, the device draws less then 1µA. In
the off state, current is prevented from flowing
between the input and output on each respective
channel. The EN(A/B) function has logic level
thresholds that allow the AAT4626 to be TTL compatible and may also be controlled by 2.5V to 5.0V
CMOS circuits. The voltage level on either
EN(A/B) or FAULT(A/B) should not exceed the
input supply level present on the IN pin.
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AAT4626
USB Dual-Channel Power Switch
Applications Information
Operation in Current Limit
If an excessive load is applied to the either output
of an AAT4626, the load current will be limited by
the AAT4626's current limit circuitry. Refer to the
"Current Limit" figure in the typical characteristics
section of this data sheet. If a short circuit were to
occur on the load applied to either the A or B output, there would be a demand for more current
than what is allowed by the internal current limiting
circuit and the voltage at the device output will
drop. This causes the AAT4626 to dissipate more
power than in normal operation, causing the die
temperature to increase. When die temperature
exceeds the internal over temperature threshold,
the AAT4626 will shut down both the A and B output channels. After shutting down, the AAT4626
cools to a level below the over temperature threshold, at which point it will start up again. The
AAT4626 will continue to cycle off and on until one
of the following events occurs; the load current of
the offending output is reduced to a level below the
AAT4626's current limit setting, the input power is
removed, or until the output is turned off by a logic
high level applied to the EN pin of the fault channel.
the printed circuit board assembly under the
AAT4626 when the load switch is not dissipating
power. Equation 1 can be transformed to provide
IMAX; Refer to Equation 2.
IMAX=
TSD(MIN) - TA(MAX)
RDS(ON)(MAX) × RθJA
TSD(MIN) is the minimum temperature required to
activate the device over temperature protection.
The typical thermal limit temperature specification
is 125°C for the AAT4626, for calculations, 115°C is
a safe minimum value to use.
For example, a portable device is specified to operate in a 50°C environment. The printed circuit board
assembly will operate at temperatures as high as
85°C. This portable device has a sealed case and
the area of the printed board assembly is relatively
small causing RθJA to be approximately 100°C/W.
RDS(ON)(MAX) = 130W. Using Equation 2,
IMAX=
115°C - 85°C
= 1.4 A
130W × 120°C/W
If this system requires less than 1.4 A, the thermal
limit will not activate during normal operation.
Input Capacitor
Thermal Considerations
Since the AAT4626 has internal current limit and
over temperature protection, junction temperature
is rarely a concern. If an application requires a
large load current in a high temperature operating
environment, there is the possibility that the over
temperature protection circuit rather than the current limit circuit from one of the two outputs will regulate the current available to the load. In these
applications, the maximum current available without risk of activation of the over temperature circuit
can be calculated. The maximum internal temperature while current limit is not active can be calculated using Equation 1.
TJ(MAX) = IMAX2 × RDS(ON)(MAX) × RθJA + TA(MAX)
In Equation 1, IMAX is the maximum current
required by the load. RDS(ON)(MAX) is the maximum rated RDS(ON) of the AAT4626 at high temperature. RθJA is the thermal resistance between the
device die and the board onto which it is mounted.
TA(MAX) is the maximum ambient temperature for
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The input capacitor serves two purposes. First, it
protects the source power supply from transient
current effects generated by the application load circuits. If a short circuit is suddenly applied to either
output of an AAT4626, there is a microsecond long
period during which a large current can flow before
the current limit circuit becomes active. Refer to the
characteristic curve named "Short Circuit Through
0.3Ω." A properly sized input capacitor can dramatically reduce the load switch input transient
response effects seen by the power supply and
other circuitry upstream from the AAT4626.
The second purpose of the input capacitor is to prevent transient events generated by the load circuits
from effecting the operation of the AAT4626. For
example, if an AAT4626 is used in a circuit that operates from a 5 volt power supply with poor step load
response, it is possible that turning on the load
switch could cause the input power supply to droop
below the AAT4626's under voltage lockout threshold. This drop in voltage would cause the AAT4626
to turn off until the input power supply voltage levels
7
AAT4626
USB Dual-Channel Power Switch
recovers. Since this cycle would be self-perpetuating, the entire circuit could be seen to be unstable. In
the very rare case where capacitor cost is prohibitive
and the input capacitor is omitted, the output load circuit should be slew rate limited when turned on.
Output Capacitor
In order to insure stability while the device current
limit is active, a small capacitance of approximately
1µF should be used on each output. When either
output of the AAT4626 is activated using the
EN(A/B) function, there are no momentary current
transients as in the case of when a short circuit suddenly applied to a device that is already on. Refer to
the characteristic curve named "Turn-On/OFF
Response". Regardless of output capacitor size,
output current on either output is limited to the value
allowed by the threshold determined by the internal
current limiting circuitry. Refer to the internal current
limit threshold specifications stated in the electrical
characteristics section of this datasheet. This permits very large output capacitors to be used.
For example, USB ports are specified to have at
least 120µF of down stream capacitance from their
controlling power switch. An output capacitance as
large as 1000µF would not disturb the input power
supply to an AAT4626 used to control a USB port.
EN Inputs
The AAT4626 has two enable inputs, ENA and
ENB. These two enable inputs allow the AAT4626
to independently control each respective output.
The device is available in both active high EN
enable and active low (EN) enable versions. For
specific part numbers, refer to the ordering information section. When both the A and B outputs of
the AAT4626 are in the off state, the respective outputs are an open circuit and the device quiescent
current consumption is reduced to less than 1µA.
The ENA and ENB threshold voltages are set to
allow the AAT4626 to be controlled by 5 volt TTL
levels as well as CMOS compatible levels ranging
from 2.5 volts to 5 volts. The ENA or ENB function
control voltage levels should not exceed the input
supply level applied to the IN pin.
8
Fault Flag Output
The AAT4626 features an active low fault flag
(FLGA and FLGB) output for each A and B output
channel. The fault flags are provided to alert the
system if the over current or over temperature circuits become active or if the load switch is not
receiving a sufficient voltage level to operate properly. If either the current limit or over temperature
circuits in any combination are constantly active for
more than approximately ten milliseconds, the
FLG(A/B) pin is pulled to ground internally through
an open drain device. The 10 millisecond delay on
the fault function is intended to prevent capacitive
loads connected to one of the load switch outputs
from activating it's respective flag when the device
is turned on. The placement of a pull up resistor
between the FLGA or FLGB pin and the IN pin is
recommended. Reasonable values for the pull up
resistor should range from 10kΩ to 100kΩ. Since
the fault flags are open drain terminals, they may be
pulled up to any voltage that is not greater than the
level present on the IN pin. This is done to allow the
AAT4625 to signal ancillary circuitry that is powered
by voltage levels less than the level on the IN pin.
If a fault flag delay greater then 10ms is required,
addition delay may be added by use of an RC filter.
Referencing to Figure 1, an RC filter can be added
to the fault flag output.
Reverse Voltage
The AAT4626 is designed to control current flowing
from IN to OUT. If a voltage is applied to OUT
which is greater than that on IN, a large resulting
reverse current may flow, potentially damaging the
AAT4626.
Under Voltage Lockout
The AAT4626 has been designed with an under
voltage lockout (UVLO) control circuit. The under
voltage lockout prevents the output MOSFET
devices from turning on until VIN exceeds the typical UVLO threshold of 2.3 volts. During operation,
the device will automatically shutdown if VIN falls
below the UVLO threshold and the fault flags will
be toggled.
4626.2002.1.0.93
AAT4626
USB Dual-Channel Power Switch
V+
100k
USB Controller
Over Current
Flag Input
AAT4626
1
R1
10k
2
3
C1
0.1µF
4
ENA OUTA
FLGA
IN
FLGB GND
ENB OUTB
8
7
6
5
Figure 1: Fault Flag delay RC filter.
power surges. The AAT4626 will turn on in a linear
ramping fashion and regulate the inrush current
with in the specified current limit for the device.
The error flag usually will not be effected during
application turn on since the 10ms fault flag blanking time is intended for these types of events. If an
application turn on current surge exceeds 10ms, an
RC delay filter may be added to the Flag output to
prevent the system from receiving an error during
the start up sequence.
Hot-Plug Applications
Application circuit cards with a high in-rush current
potential can be limited by use of the AAT4626.
The AAT4626 has both slew rate limited turn on
characteristics and current limit controlled outputs,
which make it ideally suited for power port hot-plug
applications. A host power back plane or hot plug
receptacle may be sensitive to short duration high
Cable / Connector
to Hot-Plug Port
VBUS
AAT4626
V+
1
2
CIN
4.7µF
Hot-Plug
Receptacle
3
4
ENA
OUTA
FLGA
IN
FLGB
GND
ENB
OUTB
0.1µF
Card
Application
Circuit A
8
7
6
5
CBULKA
(120µF)
CBULKB
(120µF)
GND
GND
Card
Application
Circuit B
Dual Channel
Inrush Current Protected
Application Card
Figure 2: AAT4626 Input Inrush Current Protected Dual Output Application
4626.2002.1.0.93
9
AAT4626
USB Dual-Channel Power Switch
2. Make component solder pads large to minimize contact resistance
3. The AAT4626 output bulk capacitors and ferrite beads should be placed as close to the
device as possible. PCB traces to the output
connector should be kept as short as possible
to minimized trace resistance and the associated voltage drop (I2R loss).
4. If ferrite beads are used in the circuit, select
ferrite beads with a minimum series resistance.
5. The use of PCB trace vias should be avoided
on all traces that conduct high currents. If
vias are necessary, make the vias as large as
possible and use multiple vias connected in
parallel to minimize their effect.
PCB Layout Information
In order to obtain the maximum performance from
the AAT4626, very careful attention must be considered in regard to the printed circuit board layout.
In most port power switch and port protection applications, high voltage and current transient events
will occur. Proper printed circuit board (PCB) layout can help reduce the effects of transient events.
PCB trace resistance will effect over all circuit transient response, in addition small voltage drops will
be incurred.
Refer to the following guidelines for power port
PCB layout:
1. PCB traces should be kept as short and direct
as possible to minimize the effects of the PCB
on circuit performance.
Trace Resistance
0.01ohms
(5mV)
IN
V+
Ferrite Bead
and PCB trace
resistance
0.02ohms
(10mV)
P-Channel Mosfet
Switch On Resistance
0.09ohms
(45mV)
Cable, Connector
and Contact
Resistance
0.03ohms
(15mV)
OUTA
VBUS
Downstream
Peripheral Port
Input
Power Supply
4.50V to 5.25V
CBULK
0.1µF
CBULK
AAT4626
Ch. A
0.1µF
500mA Max.
Load Current
GND
GND
GND
(5mV)
(10mV)
(15mV)
Total Voltage Drop = 75mV
Figure 3: Summary of typical circuit voltage drops caused by AAT4626 circuit components and PCB
trace resistance.
Evaluation Board Layout
The AAT4626 evaluation layout follows the recommend printed circuit board layout procedures and
can be used as an example for good application
10
layouts. Note that ferrite beards are not used on
this simple device evaluation board. The board
layout shown is not to scale.
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AAT4626
USB Dual-Channel Power Switch
Figure 4: Evaluation board
component side layout
Figure 5: Evaluation board
solder side layout
Figure 6: Evaluation board
top side silk screen layout /
assembly drawing
Application Circuits
Ferrite Beads
7
VBUS = 5.0V
OUTA
8
VBUS(A)
AAT4626
CIN
0.1µF
R1
100k
IN
COUT1
0.1µF
R2
100k
D+
COUT2
120µF
DGND
USB Controller
On/Off A
Error Flag A
Error Flag B
On/Off B
1
2
3
4
ENA
DATA
(Port A)
FLGA
FLGB
Ferrite Beads
ENB
OUTB
6
5
VBUS(B)
COUT3
0.1µF
D+
COUT4
120µF
DGND
DATA
(Port B)
Figure 7: Typical Dual USB Host Port Application
4626.2002.1.0.93
11
AAT4626
USB Dual-Channel Power Switch
VCC
+5.0V
100k
4.50V to 5.25V
Upstream VBUS
100mA Maximum
AAT3200-3.3
VBUS
IN
3.3V USB Controller
VIN
OUT
GND
D+
D-
0.1µF
100k
1µF
ON/OFF A
AAT4626
ENA
Over Current A
FLGA
IN
Over Current B
FLGB
GND
1µF
ON/OFF B
ENB
Ferrite Beads
OUTA
VBUS(A)
120µF
D+
0.1µF
D-
OUTB
GND
GND
USB Port A
GND
Data
Ferrite Beads
USB Port B
VBUS(B)
120µF
D+
0.1µF
DGND
Data A/B
(Two Pair to
USB Controller)
Figure 8: Self-Powered Dual Port USB Hub
100k
4.50V to 5.25V
Upstream V BUS
100mA Maximum
VBUS
AAT3200-3.3
IN
3.3V USB Controller
VIN
OUT
GND
D+
D-
1µF
GND
0.1µF
100k
1µF
ON/OFF A
FLGA
IN
Over Current B
FLGB
GND
ENB
Ferrite Beads
OUTA
Over Current A
ON/OFF B
GND
USB Port A
AAT4626
ENA
VBUS(A)
120µF
0.1µF
D+
D-
OUTB
GND
Data A
USB Port B
Data
Ferrite Beads
VBUS(B)
120µF
0.1µF
D+
DGND
Data B
Figure 9: USB Bus Powered Dual Port USB Hub
12
4626.2002.1.0.93
AAT4626
USB Dual-Channel Power Switch
Ordering Information
Package
Enable
SOP8
Part Number
Marking
Bulk
Tape and Reel
EN (Active-high)
AAT4626IAS-1-B1
AAT4626IAS-1-T1
SOP8
EN (Active-low)
AAT4626IAS-B1
AAT4626IAS-T1
TSSOP8
EN (Active-high)
AAT4626IHS-1-B1
AAT4626IHS-1-T1
TSSOP8
EN (Active-low)
AAT4626IHS-B1
AAT4626IHS-T1
Package Information
SOP-8
Dim
E H
1
2
D
7 (4x)
A
c
A2
Q
b
y
4626.2002.1.0.93
e
A1
L
A
A1
A2
B
C
D
E
e
H
L
Y
θ1
Millimeters
Min
Max
1.35
1.75
0.10
0.25
1.45
0.33
0.51
0.19
0.25
4.80
5.00
3.80
4.00
1.27
5.80
6.20
0.40
1.27
0.00
0.10
0°
8°
Inches
Min
Max
0.053
0.069
0.004
0.010
0.057
0.013
0.020
0.007
0.010
0.189
0.197
0.150
0.157
0.050
0.228
0.244
0.016
0.050
0.000
0.004
0°
8°
Note:
1. PACKAGE BODY SIZES EXCLUDE MOLD FLASH
PROTRUSIONS OR GATE BURRS.
2. TOLERANCE 0.1000mm (4mil) UNLESS
OTHERWISE SPECIFIED
3. COPLANARITY: 0.1000mm
4. DIMENSION L IS MEASURED IN GAGE PLANE.
5. CONTROLLING DIMENSION IS MILLIMETER;
CONVERTED INCH DIMENSIONS ARE NOT
NECESSARILY EXACT.
13
AAT4626
USB Dual-Channel Power Switch
TSSOP-8
Dim
E
1
DETAIL A
E1
2
D
E
0.20
e
A
A1
A2
b
c
D-8
D-28
E
E1
e
L
L1
R
R1
θ1
θ2
Millimeters
Min
Max
1.05
1.20
0.05
0.15
1.05
0.25
0.30
0.127
2.90
3.10
9.60
9.80
4.30
4.50
6.20
6.60
0.65 BSC
0.50
0.70
1.0
0.09
0.09
0°
8°
Inches
Min
Max
0.041
0.047
0.002
0.006
0.041
0.010
0.012
0.005
0.114
0.122
0.378
0.386
0.170
0.177
0.244
0.260
0.025 BSC
0.20
0.028
0.039
0.004
0.004
0°
8°
12°
R1
A2
A
R
1
b
A1
L
DETAIL A
2
L1
Advanced Analogic Technologies, Inc.
1250 Oakmead Parkway, Suite 310, Sunnyvale, CA 94086
Phone (408) 524-9684
Fax (408) 524-9689
14
4626.2002.1.0.93
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