Datasheet AAT4620 Datasheet (Analogic Tech)

SmartSwitch

™

General Description

The AAT4620 SmartSwitch is a current limited P­channel MOSFET power switch designed for high­side load-switching applications in PCMCIA
GSM/GPRS/3G modem cards. Used in conjunc­tion with a super capacitor, the AAT4620 will
ensure that the power ratings of the PCMCIA host
are not exceeded at any time. Featuring two inde­pendent, programmable current limits and a power
loop, the AAT4620 can ensure that the super
capacitor can be charged without exceeding PCM­CIA specifications. The current limit is set by two
external resistors allowing a ±10% current limit
accuracy over the normal operating temperature
range. The switch can be controlled from either of
the two enable inputs and in the off condition will
block currents in both directions. The AAT4620
also incorporates a System READY function which
can advise the system that the super capacitor is
fully charged and ready for use. Adjustable hys­teresis is provided with the addition of an external
resistor. The quiescent supply current is typically a
low 40µA. In shutdown mode, the supply current
decreases to less than 1µA.

The AAT4620 is available in a thermally enhanced,
Pb-free, 12-pin TSOPJW package and is specified
over the -40°C to 85°C temperature range.

Features

•VINRange: 3.0V to 5.5V

• Dual Independent Current Limits
— 100mA to 1200mA
— ±10% Current Accuracy
— 20°C Temperature Band

• Reverse Current Blocking Protection

• Power Loop

• Low Quiescent Current
— 40µA Typical
— 1.0µA Max with Switch Off

• 65mΩ Typical R

DS(ON)

at 3V

• Only 1.4V Needed for Enable Control Pin

• System READY Output with Externally
Programmable Hysteresis

• Under-Voltage Lockout

• Temperature Range: -40 to 85°C

• 12-Pin TSOPJW Package

Applications

• CF Card Port Power Protection

• Express Card GSM/GPRS/3G Modems

• Hot Swap Supplies

• PCMCIA Card GSM/GPRS/3G Modems

• Personal Communication Devices

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

Typical Application

GND

EN IL

EN IU

ISETU

ISETL

OUT

RDY

R

SETU

R

SETL

SuperCap

To Load

V

CC

VCC

100kΩ

To μC

R

HYS

Under­Voltage

Lockout

1.2V

Reference

Current

Limit

Control

Reverse
Blocking

Over-Temp

Protection

Power

Loop

EN

OPERATION

EN

SUPERCAP

4620.2007.04.1.1 1

Pin Descriptions

Pin Configuration

TSOPJW-12

(Top View)

1

2

3

4

5

6

12

11

10

9

8

7

EN IU

EN IL

GND

VCC
VCC
VCC

RDY
RHYS
ISETU
ISETL
OUT
OUT

Pin # Symbol Function

1 EN IU Enable input. Active low enable with internal pull up. Also switches in the higher current limit

to allow the System to start functioning. Can be directly connected to System Ready for
automatic enabling. When both EN IL and EN IU are enabled, I

SETU

will be selected.

2 EN IL

Enable input. Active low enable with internal pull up. Also switches in the lower current limit
initiating the super capacitor to start charging.

3 GND Device ground connection.

4, 5, 6 VCC Input pins to the P-channel MOSFET source. Connect 1µF capacitor from VCC to GND.

7, 8 OUT P-channel MOSFET drain connection. Connect to super capacitor from OUT to GND.

9 ISETL Lower current-limit set input. A resistor from ISETL to ground sets the maximum lower cur-

rent limit for the switch. Current limit can be set between 100mA and 1200mA.

10 ISETU Upper current limit set input. A resistor from ISETU to ground sets the maximum upper cur-

rent limit for the switch. Current limits can be set between 100mA and 1200mA. Connect to
ground to disable current limit.

11 RHYS System READY hysteresis. Connect a resistor to ground to set the System Ready com-

parator hysteresis.

12 RDY

System ready pin. Open drain, active low, initiated when the capacitor is 98% charged.

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

2 4620.2007.04.1.1

Absolute Maximum Ratings

1

Thermal Characteristics

Symbol Description Value Units

V

CC

VCC to GND -0.3 to 6 V

V

EN

EN to GND -0.3 to VCC+ 0.3 V

V

SET

, V

OUT

SET, OUT to GND -0.3 to VCC+ 0.3 V

I

MAX

Maximum Continuous Switch Current 2.5 A

Symbol Description Value Units

θ

JA

Maximum Thermal Resistance

2

160 °C/W

P

D

Maximum Power Dissipation

2

625 mW

T

J

Operating Junction Temperature Range -40 to 150 °C

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

4620.2007.04.1.1 3

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. Mounted on an FR4 board.

Electrical Characteristics

1

VCC= 3.0V to 5.5V, TA= -40°C to 85°C unless otherwise noted. Typical values are at TA= 25°C.

Symbol Description Conditions Min Typ Max Units

V

CC

Operation Voltage 3.0 5.5 V

I

Q

Quiescent Current

EN IL

or EN IU = VCC, I

OUT

= 0,

40 75 µA

R

HYS

= 200kΩ

I

QU0

Quiescent Current U

0

EN IL = VCC, EN IU = GND, I

OUT

= 0,

I

SET

= GND, R

HYS

= 200kΩ

40 75 µA

I

Q(OFF)

Off Supply Current EN IL = EN IU = V

CC

0.4 1.0 µA

I

SD(OFF)

Off Switch Current EN IL = EN IU = VCC, V

SUPERCAP

= 0 0.4 10 µA

V

UVLO

Under-Voltage Lockout Rising edge, 1% hysteresis 2.7 3.0 V

R

DS(ON)

On-Resistance

V

CC

=4.75V, R

SETL

= R

SETU

= 0k 50 100

mΩ

VCC=3.0V, R

SETL

= R

SETU

= 0k 65 120

I

LIMLACC

Lower Current Limit Accuracy

R

SETL

= 249kΩ; ΔTA≤ 20°C 180 200 220

mA

R

SETL

= 249kΩ 170 200 230

I

LIMUACC

Upper Current Limit Accuracy

R

SETU

= 1.24MΩ; ΔTA≤ 20°C 900 1000 1100

mA

R

SETU

= 1.24MΩ 850 1000 1150

I

LIM(MIN)

Lower Minimum Current Limit 75 mA

V

EN(L)

EN Input Low Voltage VCC=3.0V to 5.5V

2

0.4 V

V

EN(H)

EN Input High Voltage VCC= 3.0V to 5.5V

2

1.4 V

I

EN(SINK)

EN Input Leakage VEN= 5.5V 1.0 µA

T

DEL(OFF)

Turn-Off Delay Time VCC= 5V 0.4 1.0 µs

V

RDY

System READY Trip Threshold V

OUT

rising, TA= 25°C

98 % of

V

OUT

V

RDYHYS

System READY Hysteresis R

HYS

= 200kΩ 200 mV

V

RDY(L)

System READY Voltage Low I

SINK

= 1mA 0.4 V

I

RDY

RDY Leakage Current V

RDY

< 5.5V, V

OUT

< 98% of V

OUT

1.0 µA

OTMP Shutdown Temperature 145 °C

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

4 4620.2007.04.1.1

1. The AAT4620 is guaranteed to meet performance specification over the -40°C to 85°C operating temperature range and is assured by
design, characterization and correlation with statistical process controls.

2. For VINoutside this range consult the Typical EN Threshold curve.

Typical Characteristics

Off-Supply Current vs. Temperature

(E

NUB

= E

NLB

= VCC; V

OUT

= Open)

Temperature (°

°

C)

I

Q(OFF)

(µA)

0.01

0.1

1

10

-40 -20 0 20 40 60 80 100 120

VIN = 3.3V

VIN = 5V

Off-Switch Current vs. Temperature

(E

NUB

= E

NLB

= VCC; V

OUT

= 0V)

Temperature (°

°

C)

I

SD(OFF)

(µA)

0.01

0.1

1

10

100

-40 -20 0 20 40 60 80 100 120

VIN = 5V

VIN = 3.3V

Reverse Off-Switch Current vs. Temperature

(E

NUB

= E

NLB

= VCC; VIN = 0V)

Temperature (°

°

C)

I

RSD(OFF)

(µA)

0.01

0.1

1

10

100

-40 -20 0 20 40 60 80 100 120

V

OUT

= 5V

V

OUT

= 3.3V

R

SET

vs. I

LIM

(25°°C)

R

SET

(kΩ)

I

LIM

(A)

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40

0 200 400 600 800 1000 1200 1400 1600

VIN = 5V

VIN = 3.3V

Output Current vs. Output Voltage

(R

SETU

= 383kΩΩ, 25°C)

Output Voltage (V)

Output Current (A)

0.00

0.10

0.20

0.30

0.40

0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 3.3

VIN = 5V

VIN = 3.3V

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

4620.2007.04.1.1 5

Typical Characteristics

I

LIM

vs. Temperature

(VIN = 4V; V

OUT

= 3.85V; ENUB = 0V; R

SET

= 1.24MΩΩ)

Temperature (

°

C)

I

LIM

(mA)

960

980

1000

1020

-50 -25 0 25 50 75 100

Quiescent Current IQU vs. Temperature

(E

NUB

= 0V; E

NLB

= VCC; or E

NLB

= 0V; E

NUB

= VCC;V

OUT

= Open)

Temperature (°°C)

I

QU

(µA)

25

30

35

40

45

50

55

-40 -20 0 20 40 60 80 100 120

VIN = 5V

VIN = 3.3V

I

LIM

vs. Temperature

(VIN = 4V; V

OUT

= 3.85V; ENLB = 0V; R

SET

= 249kΩΩ)

Temperature (

°

C)

I

LIM

(mA)

190

195

200

205

210

-50 -25 0 25 50 75 100

V

RHYS

vs. R

RHYS

R

RHYS

(kΩΩ)

V

RHYS

(V)

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40

1.60

1.80

2.00

0 500 1000 1500

R

DS(ON)

vs. Temperature

(R

SET

= 0ΩΩ)

Temperature (

°

C)

R

DS(ON)

(m

Ω

)

30

40

50

60

70

80

90

-40 -20 0 20 40 60 80 100

VIN = 3V

VIN = 5V

R

DS(ON)

vs. Input Voltage

(R

SET

= 0kΩΩ)

Input Voltage (V)

R

DS(ON)

(m

Ω

)

45

50

55

60

65

70

2.5 3 3.5 4 4.5 5 5.5

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

6 4620.2007.04.1.1

Typical Characteristics

VIL vs. Input Voltage

(E

NUB

= Open; Vary E

NLB

; 25°C)

Input Voltage (V)

V

IL

(V)

0.6

0.7

0.8

0.9

1.0

1.1

2.5 3.5 4.5 5.5 6.5 7.
5

VIH vs. Input Voltage

(E

NLB

= Open; Vary E

NUB

; 25°C)

Input Voltage (V)

V

IH

(V)

0.6

0.7

0.8

0.9

1.0

1.1

2.50 3.50 4.50 5.50 6.50 7.50

VIH vs. Input Voltage

(E

NLB

= Open; Vary E

NUB

; 25°C)

Input Voltage (V)

V

IH

(V)

0.6

0.7

0.8

0.9

1.0

1.1

2.50 3.50 4.50 5.50 6.50 7.50

VIL vs. Input Voltage

(E

NLB

= Open; Vary E

NUB

; 25°C)

Input Voltage (V)

V

IL

(V)

0.6

0.7

0.8

0.9

1.0

1.1

2.5 3.5 4.5 5.5 6.5 7.5

Hard Short Circuit

(VIN = 3.3V)

Time (200ms/div)

Input Voltage (top) (V)

Output Voltage (middle) (V)

Output Current (A)

0

2

4

6

-0.2

0.0

0.2

0.4

Soft Short Circuit with 5ΩΩ Series Impedanc

e

(VIN = 5V)

Time (200ms/div)

Input Voltage (top) (V)

Output Voltage (middle) (V)

Output Current (A)

0

2

4

6

-0.2

0.0

0.2

0.4

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

4620.2007.04.1.1 7

Typical Characteristics

Short Circuit with 5ΩΩ Series Impedance

(VIN = 3.3V)

Time (200ms/div)

Input Voltage (middle) (V)

Output Voltage (bottom) (V)

Output Current (A)

0

2

4

0.0

0.2

0.4

0.6

0.8

1.0

Hard Short Circuit

(VIN = 5V)

Time (200ms/div)

Input Voltage (top) (V)

Output Voltage (middle) (V)

Output Current (A)

0

2

4

6

-0.2

0.0

0.2

0.4

Charging Profile

(I

LIMIT

= 150mA; VIN = 5V; CO = 0.55F)

Time (20ms/div)

Output Voltage (V)

Output Current (A)

0

2

-0.05

0.00

0.05

0.10

0.15

Charging Profile

(I

LIMIT

= 150mA; VIN = 5V; CO = 0.55F)

Time (5s/div)

Output Voltage (V)

Output Current (A)

0

2

4

6

-0.15

0.00

0.15

0.30

Charging Profile

(VIN = 5V, V

ISETL

= V

ISETU

= 0V, CO = 0.55F)

Time (2s/div)

Output Voltage (V)

Output Current (A)

0

2

4

6

-0.5

0.0

0.5

1.0

1.5

Charging Profile

(I

LIMIT

= 1A; VIN = 5V; CO = 0.55F)

Time (2s/div)

Output Voltage (V)

Output Current (A)

0

2

4

6

-0.2

0.0

0.2

0.4

0.6

0.8

1.0

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

8 4620.2007.04.1.1

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

4620.2007.04.1.1 9

Functional Block Diagram

GND

EN IL

EN IU

ISETU

VCC

OUT

ISETL

RDY

RHYS

Reverse
Blocking

Over-Temp

Protection

Power

Loop

Under-

Voltage

Lockout

1.2V

Reference

Current Limit

Control

Functional Description

The AAT4620 is an integrated P-channel MOSFET
load switch with an upper and lower adjustable cur­rent limits which can be enabled independently,
over temperature protection, a power loop and a
super capacitor charger. The current limit control is
combined with an over temperature thermal limit
and power loop circuit to provide a comprehensive
system to protect the load switch and its supply
from load conditions which exceed the supply spec­ifications. The AAT4620 has been designed specif­ically to provide the interface between a PCMCIA

host and PCMCIA card where a super capacitor has
been used to "average out" high pulse currents
which would otherwise exceed the PCMCIA/
Express Card power specifications. e.g. GSM/
GPRS modem cards, where pulse currents during
transmit signals can exceed the 1A maximum spec­ification (1.3A in the case of Express Card).

The current limit and over temperature circuits act
independently. The device current limit is activated
when the output load current exceeds an internal
threshold level. There are two internal current lim­its which are enabled independently. The current
limit threshold in each case is determined by exter-

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

10 4620.2007.04.1.1

nal resistors connected between the two SET pins
and ground. The minimum current limit threshold is
specified by I

LIM(MIN)

. If the load condition maintains
the device in current limit and the chip temperature
reaches a critical point, then an internal power loop
will reduce the current to a safe level. Connecting
ISETU to ground disables the current limit protec­tion allowing a low impedance path to the host VCC.

The load switch is turned off by applying a logic
high level to both of the EN pins. When both EN IL
and EN IU are selected ISETU will be selected.
The EN function has logic level thresholds that
allow the AAT4620 to be TTL compatible and may
also be controlled by 2.5V to 5.0V CMOS circuits.
The voltage level applied to the EN pins should not
exceed the input supply level present on the VCC
pin. The AAT4620 typically consumes 40µA when
operating, when off, the device draws less then
1µA. In the off state, current is prevented from flow­ing between the input and output.

Under-voltage lockout circuitry ensures that the
VCCsupply is high enough for correct operation of
the IC. Also included is a System Ready function
which will be activated when the capacitor voltage
is charged and the load is permitted to take current.
For automatic functionality, this pin can be directly
connected to the EN IU pin. An external resistor is
provided to add hysteresis to this function.

Application Information

ISETU and ISETL Current Limit Set

The AAT4620 current limit is set at two different lev­els. Resistors from ISETL and ISETU set the lower
and upper current limit levels respectively.

The ISETL and ISETU nodes operate within a win­dow of 0.75V to 1.5V for resistor values ranging from

93.75Ω to 1.5MΩ. Resistor values outside this range
are not recommended. The ISETL and ISETU
source current varies with the resistor value used
according to Table 1. To determine the resulting cur­rent limit multiply the R

SETU

or R

SETL

node voltage
times the gain in Table 1. Note that the voltage at the
node varies from 0.75V to 1.5V and the current limit
gain varies depending on the resistor value used.

If the set pin is open circuit or allowed to exceed
2V, all power devices are disabled and the input is
disconnected from the output. Shorting the set pin
to GND enables all power devices and shorts the
V

CC

to the output pin with no current limit.

To activate the upper current level (R

SETU

) pull EN IU

low. To activate the lower current level (R

SETL

) pull

EN IL

low. If both EN IU and EN IL are pulled low the

EN IU current limit level (R

SETU

) will be selected.

V

ISET

= R

SET

· I

ISET

= 0.75V to 1.5V

Table 1: R

SET

Table.

R

SET

Range I

ISET

(µA) I

LIM/VISET

(A/V) Current Limit Range (A) Current Limit

1.5Meg - 750k 1 0.8 1.2-0.6 R

SET

*1µA*0.8

750k - 375k 2 0.4 0.6-0.3 R

SET

*2µA*0.4

375k - 187.5k 4 0.2 0.3-0.15 R

SET

*4µA*0.2

187.5 - 93.75k 8 0.1 0.15-0.075 R

SET

*8µA*0.1

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

4620.2007.04.1.1 11

Figure 1: Calculated Current Limit R

SET

Characteristic.

System Ready Hysteresis (RHYS) and
System Ready (RDY)

In internal comparator senses the output voltage
and delivers a ready signal to the external micro
controller when the output voltage reaches 98% of
the final value (VCC). The comparator hysteresis is
programmed by a resistor from the RHYS pin to
ground. The RHYS voltage determines the hys­teresis voltage and is equal to the RHYS source
current (1µA) times the RHYS resistance.

The system ready pin (RDY

) is an open drain out­put that switches low when the output voltage
reaches 98% of the input voltage. It requires an
external pull up resistor tied to the input voltage
with a typical value of 100kΩ.

Power Loop

The AAT4620 power loop limits the load current in
the event that the device power dissipation becomes
excessive. The AAT4620 power loop regulates the
die temperature to 100°C, decreasing the load cur­rent in increments of 1/32 of the current limit set point
when the die temperature reaches 100°C. When the

die temperature exceeds 100°C it decreases the
load current by 1/32 of the current limit set point. If
die temperature is less than 100°C, it increases the
load current in increments of 1/32 of the current limit
set point until the set current limit point is reached or
the die temperature exceeds 100°C.

The delay time between die temperature measure­ments varies depending on the load current limit
set point. The delay ranges from 1ms for a 75mA
current limit set point to 8ms for a 1.5A current limit
set point.

For the condition where there is no current limit set
point (shorting R

SETU

or R

SETL

to ground) the soft

start increments the current limit is 1/32 steps of

1.2A until the current reaches 1.2A, at which point
the power MOSFET turns on fully. At this point, the
current is limited by the R

DS(ON)

of the power MOS­FET and other series resistance. The Power Loop
and Over-Temperature Loop then takes control to
limit the current until the output voltage has fully
charged.

Over-Temperature Protection

If the die temperature rate of rise is fast enough to
exceed the power loop regulated temperature,
over-temperature shutdown disables the device.
The over-temperature threshold is 145°C. After
over-temperature shutdown, soft start is initiated
once the die temperature drops to 130°C.

Short Circuit Protection

The series pass power MOSFET turns off com­pletely after the output has charged to within 18mV
of the input voltage. This protects the device in the
event of a short circuit applied to the output.
Applying a short circuit or heavy load to the output
initiates the digital soft start where the current
ramps from zero to the final programmed value. The
power loop will be activated once the digital soft
start begins.

Under-Voltage Shutdown

Under-voltage lockout enables the device at 2.7V
typical with 100mV of hysteresis. The maximum
UVLO level is 3.0V.

I

LOAD

vs. R

SETU

and R

SETL

R

SETU

and R

SETL

(MΩΩ)

I

LOAD

Limit (A)

0.0

0.2

0.4

0.6

0.8

1.0

1.2

0.10 0.30 0.50 0.70 0.90 1.10 1.30 1.50

V

HYST

= R

HYS

· 1μA

= 200kΩ · 1μ

A

= 0.2V

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

12 4620.2007.04.1.1

Figure 2: AAT4620 Evaluation Board Schematic.

Figure 3: AAT4620 Evaluation Board PCB Top Side.

R1

4.7K

C1
10μF

C2

10μF

RDY

D1

VCC

5

ENIU

1

VCC

6

OUT

8

ENIL

2

GND

3

OUT

7

VCC

4

ISETL

9

ISETU

10

RHYS

11

RDY

12

AAT4620

R2
200K

R3

1.00M

R4
120K

VCC

GND

Out

GND

1

2

3

ENIU

J2

1

2

3

ENIL

J1

1

2

J3

1

2

J4

Digitally Programmed Soft Start
Current Limit

At turn on, the digital soft start increases the load
current in discrete levels equal to 1/32 of the final
programmed current limit set point from zero to the
final programmed current limit level.

Reverse Current Blocking

An internal comparator disables the internal pass
transistor when the input voltage is less than the
output voltage blocking any reverse current from
the output to the input.

Evaluation Board

The evaluation board schematic is shown in Figure 2.

The PCB layout is shown in Figures 3 and 4.

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

4620.2007.04.1.1 13

Figure 4: AAT4620 Evaluation Board PCB Bottom Side.

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

14 4620.2007.04.1.1

Ordering Information

Package Information

TSOPJW-12

All dimensions in millimeters.

0.20

+ 0.10

- 0.05

0.055 ± 0.045

0.45 ± 0.1

5

7° NOM

4° ± 4°

3.00 ± 0.10

2.40 ± 0.10

2.85 ± 0.20

0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC

0.15 ± 0.05

0.9625

±

0.0375

1.00

+ 0.10

- 0.065

0.04 REF

0.010

2.75 ± 0.25

All AnalogicTech products are offered in Pb-free packaging. The term “Pb-free” means
semiconductor products that are in compliance with current RoHS standards, including
the requirement that lead not exceed 0.1% by weight in homogeneous materials. For more
information, please visit our website at http://www.analogictech.com/pbfree.

Package Marking

1

Part Number (Tape and Reel)

2

TSOPJW-12 UZXYY AAT4620ITP-T1

1. XYY = assembly and date code.

2. Sample stock is generally held on part numbers listed in BOLD.

AAT4620

PCMCIA Current Limit Interface

and Capacitor Charger

4620.2007.04.1.1 15

Advanced Analogic Technologies, Inc.

830 E. Arques Avenue, Sunnyvale, CA 94085
Phone [phone]
Fax [phone]

© Advanced Analogic Technologies, Inc.

AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work
rights, or other intellectual property rights are implied. AnalogicTech reserves the right to make changes to their products or specifications or to discontinue any product or service with­out notice. Except as provided in AnalogicTech’s terms and conditions of sale, AnalogicTech assumes no liability whatsoever, and AnalogicTech disclaims any express or implied war­ranty relating to the sale and/or use of AnalogicTech products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent,
copyright or other intellectual property right. In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards must be provided by the
customer to minimize inherent or procedural hazards. Testing and other quality control techniques are utilized to the extent AnalogicTech deems necessary to support this warranty.
Specific testing of all parameters of each device is not necessarily performed. AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated.
All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders.