www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 1 - 16
AS7620
650mA, Ultra low Ri pple S tep Do w n DC/DC Converter
1 General Description
The AS7620 is an easy-to-use, high-efficiency, high-voltage,
hysteretic step-down DC-DC converter, operating in asynchronous
mode. Its low-power architecture extends hold-up time in battery-
backed and critical applications where maximum up-time over a wide
input supply voltage range is needed, while still providing for high
efficiencies of up to 90% during peak current demands.
Although the AS7620 is optimized for 24V applications found in
industrial and medical systems, its ability to support 100% Duty
Cycle makes the AS7620 ideal for applications demanding maximum
up-time and soft power fail behavior. In combination with low idle
current of only 30µA, on-demand switching reduces operating
current at low load currents.
By selecting an appropriate inductor value, operating current can be
lowered and switching frequencies tuned to certain load conditions.
A pin-strapped current limit input minimizes inductor peak current
and thus inductor size and cost for any given application.
The device further includes output short-circuit protection and
thermal shutdown. In shutdown mode, only 1µA (typ) of current is
consumed.
Figure 1. AS7620 - Block Diagram
2 Key Features
Low quiescent current for efficient partial load operation
Wide Supply Voltage Range, 3.6V to 32V
100% Duty Cycle extends operating range
Pin-programmable cycle-by-cycle current limit
Integrated PMOS eliminates bootstrap capacitor
Resistor-programmable Early Power Fail Warning Input
Power-Good Flag
Thermal Shutdown
Fixed 3.3V and adjustable output (1.2V to V
IN
)
Small 4x4mm 12-Lead MLPQ Enhanced Power Package
Specified from -40ºC to +125ºC junction and 85ºC maximum
ambient temperatures
3 Applications
The AS7620 is suitable for Industrial 24VDC applications like PLCs,
robotics; Home Security and Building Control applications; Solid-
state utility meters; Signage and LED column power; and Sensor
interfaces.
+
-
+
-
+
-
LX
ILIM
PG
PF
VIN
SHDN
FB
VEPF
LDO
Temp Level
Shifter
Soft-Start I
SENSE
V
REF
Hysteretic
Controller
AS7620
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 2 - 16
AS7620
Datasheet - Pin A s s ig n m e n t s
4 Pin Assignments
Figure 2. Pin Assignments (Top View)
4.1 Pin Descriptions
Table 1. Pin Descriptions
Pin Number Pin Name Description
1 V
IN
High Voltage Power Supply Input
2 GND Must be connected to GND
3 LX Power Output to Inductor
4 GND Must be connected to GND
5 FB Feedback input
6 ILIM Current Limit input
7 SHDN Shutdown input, active low
8 GND Must be connected to GND
9 GND Must be connected to GND
10 PF Early Power Fail output, open drain, active LOW
11 VEPF Comparator voltage input for early power fail warning
12 PG Power Good, open drain, active HIGH output, monitors feedback voltage
Pad PGND Exposed pad. Connect to GND plane to help thermal dissipation
1
2
3
4 5 6
7
8
9
10
11
12
V
IN
GND
LX
GND
FB
ILIM
PG
VEPF
PF
GND
GND
SHDN
AS7620
PGND
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AS7620
Datasheet - Abs o l u t e M a x i m u m R at i n g s
5 Absolute Maximum Ratings
Stresses beyond those listed in Table 2 may cause permanent damage to the device. These are stress ratings only, and functional operation of
the device at these or any other conditions beyond those indicated in Electrical Characteristics on page 4 is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Table 2. Absolute Maximum Ratings
Parameter Min Max Units Comments
Electrical Parameters
V
IN
-0.3 40 V
LX -0.3 V
IN
+0.3 V
FB, SHDN -0.3 V
IN
+0.3
or 5.5 V Whichever is lower
All other pins except LX, FB and SHDN -0.3 3.6 V
Input Current (latch-up immunity) -30 +30 mA Norm: JEDEC 78
1
1. Voltage on pin 7 (SHDN) limited to +5.5V
Electrostatic Discharge
Electrostatic Discharge HBM +/- 1 kV Norm: MIL 883 E method 3015
Temperature Ranges and Storage Conditions
Package Power Dissipation 1 W θJA = 32ºC/W for a 4-layer board, 4 vias, T
AMB
=
+70ºC
Storage Temperature -55 150 ºC
Junction Temperature 150 ºC
Package body temperature 260 ºC
The reflow peak soldering temperature (body
temperature) specified is in accordance with IPC/
JEDEC J-STD-020“Moisture/Reflow Sensitivity
Classification for Non-Hermetic Solid State Surface
Mount Devices”.
The lead finish for Pb-free leaded packages is matte tin
(100% Sn).
Humidity non-condensing 5 85 %
Moisture Sensitive Level 3 Represents a max. floor life time of 168h
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 4 - 16
AS7620
Datasheet - Ele c t r i ca l C h a ra c t e ris t i c s
6 Electrical Characteristics
V
OUT
=3.3V, L
X
=10µH, C
X
=100µF, typical values at V
IN
= +24V and T
AMB
= +25ºC (unless otherwise specified). All limits are guaranteed. The
parameters with min and max values are guaranteed with production tests or SQC (Statistical Quality Control) methods.
Table 3. Electrical Characteristics
Symbol Parameter Conditions Min Typ Max Units
T
AMB
Operating Temperature Range -40 85 ºC
T
J
Operating Junction Temperature -40 125 ºC
V
IN
Input Voltage Range 3.6 24 32 V
V
CC
VEPF, ILIM -0.3 3.6 V
V
ST
Start-up Voltage 3.3 V
V
OUT
Output Voltage
AS7620-A 1.19 V
IN
V
AS7620-B Initial, at 25ºC amb. 3.267 3.300 3.333 V
Over line, load and temperature 3.218 3.383
V
FB
Feedback voltage AS7620-A Initial, at 25ºC amb. 1.178 1.190 1.202 V
Over line and temperature 1.166 1.214 V
AS7620-B 3.218 3.300 3.383
V
HYS
Controller Hysteresis AS7620-A At FB node 8 15 30 mV
AS7620-B 22 42 82
V
EPF
Early Power Fail Threshold at V
EPF
1.19 V
V
PG
Power Good Threshold of V
FB
at FB pin 91 93 95 %
Line Regulation V
IN
=8V to 24V, R
L
=200Ω0.1 % / V
Load Regulation 10% to 90% load change 0.9 %
I
FB
Input Bias Current AS7620-A FB pin 200 nA
AS7620-B 3 5 µA
I
OUT
Output Current I
LIM
/2 mA
I
LIM
Switch Current Limit
ILIM=0V
1
1. LX=100µH, C
X
=10µF, Initial accuracy only. For temperature variation, please refer to performance graphs.
192 240 288
mA
ILIM=V
OUT
2
2. V
OUT
from 1.5V to 3.6V
576 720 864
ILIM=open 800 1000 1200
P-Channel on resistance 0.4 0.8 Ω
Maximum Duty Cycle At V
IN
=3.6V 100 %
t
ON
Minimum On-Time Current limit is not attained to turn off the
switch before the minimum on-time expired 8 10 12 µs
t
OFF
Minimum Off-Time 0.22 0.42 0.62 µs
I
Q
Quiescent Current Non-switching 30 45 µA
I
OUT
=500µA 37 µA
I
SHDN
Shutdown Current T
AMB
= +25ºC 1 5 µA
V
LO
Shutdown Threshold SHDN 1 V
I
IBN
Logic Input Bias Current SHDN 1 µA
T
SHDN
Shutdown Temperature 160 ºC
T
SHDN
Hysteresis 10 ºC
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 5 - 16
AS7620
Datasheet - Ty p ica l O per a t i n g C h a r a c t e r isti c s
7 Typical Operating Characteristics
Figure 3. Efficiency vs. Output Current, V
OUT
=4.5V Figure 4. PMOS Rdson vs. Temperature
Figure 5. GND Current vs. I
OUT
@ T
AMB
Figure 6. GND Current vs. Temperature @ I
OUT
=0A
0
100
200
300
400
500
600
700
800
900
1000
-40 -20 0 20 40 60 80 100 120
Temp (C)
Rdson (mohm) .
30
40
50
60
70
80
90
100
1 10 100 1000
Iout (mA)
Efficiency (%)
VIN=32V
VIN=12V
VIN=24V
VIN=5V
28.0
30.0
32.0
34.0
36.0
38.0
40.0
42.0
-40-20 020 40 6080100120
Temp (C)
IGND (uA)
1
10
100
1000
10000
1.0 10.0 100.0 1000.0
Iout (mA)
IGND (uA)
VIN=32V
VIN=24V
VIN=12V
VIN=5V
VIN=32V
VIN=24V
VIN=5V
VIN=12V
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 6 - 16
AS7620
Datasheet - Ty p i c a l O p er a t i n g C h a r a c t e r is ti c s
Figure 7. Current Limit Threshold vs. V
IN
Figure 8. Average Switching Frequency vs. V
IN
Figure 9. Average Switching Frequency vs. I
OUT
(ILIM=open) Figure 10. Shutdown Current vs. Temperature
Figure 11. Line Regulation @ I
OUT
=10mA Figure 12. Line Regulation @ I
OUT
=500mA
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
5 10 15 20 25 30
Vin (V)
CL (mA)
ILIM GND
ILIM VOUT
ILIM FLOATING
100
1000
10000
100000
1000000
5 7 9 1113151719212325272931
Vin (V)
Fsw (Hz)
IOUT=500µA
IOUT=5mA
IOUT=50mA
IOUT=500mA
0
30000
60000
90000
120000
150000
180000
210000
240000
270000
300000
330000
0 100 200 300 400 500
Iout (mA)
Fsw (Hz)
VIN=5V
VIN=12V
VIN=24V
VIN=32V
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
-40 -20 0 20 40 60 80 100 120
Temp (C)
ISHDN (uA)
VIN=5V
VIN=12V
VIN=24V
VIN=32V
-10% 10%
-0.800%
-0.600%
-0.400%
-0.200%
0.000%
0.200%
0.400%
0.600%
0.800%
Vout Variation (%)
Vin Variation (%)
-10% 10%
-0.400%
-0.300%
-0.200%
-0.100%
0.000%
0.100%
0.200%
0.300%
0.400%
Vout Variation (%)
Vin Variation (%)
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 7 - 16
AS7620
Datasheet - Ty p i c a l O p er a t i n g C h a r a c t e r is ti c s
Figure 13. Load Regulation Figure 14. Line Regulation V
OUT
=5V @ 10mA
Figure 15. Line Regulation V
OUT
=5V @ 10mA Figure 16. Load Regulation V
OUT
=5V 10mA
→
500mA
Note: All measurements taken at V
IN
=24V, V
OUT
=3.3V, and T
AMB
=25ºC using the typical application circuit specified in Figure 17, unless
otherwise specified.
-1.000%
-0.800%
-0.600%
-0.400%
-0.200%
0.000%
0.200%
0.400%
0.600%
0.800%
1.000%
0.1 1 10 100 1000
Iout (mA)
Vout Variation %
VOUT
VIN
VOUT
VIN
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 8 - 16
AS7620
Datasheet - D e ta i l e d D es c r i pt io n
8 Detailed Description
Figure 17. System Diagram of AS7620-A with Early Power Fail Warning
8.1 Shut Down
The device can be shut down by providing a voltage lower than 1V at the SHDN pin (7). In this condition, the consumption is only 1µA (typ). The
AS7620 is providing an internally regulated pull-up circuit. No external pull-up resistor shall be used, which could otherwise damage the
shutdown input. Connect the SHDN input directly to an open drain port only.
8.2 Soft Start
The device implements a soft start by limiting the inrush current into the output choke. Initially, the internal PMOS is turned on until the current
reaches the programmed current limit (see Current Limit on page 9) and then is immediately turned off. It will be turned on again when the
current approaches 0A. In this time frame, the FB voltage (V
FB
) will be lower than the reference and so the duty cycle will be driven by the
current limit only.
8.3 Regulation
Both AS7620-A and AS7620-B are based on a hysteretic control method. Moreover, the switch current is monitored to make the converter
always work in discontinuous current mode (DCM). The advantages of this type of control system can be summarized as following:
High efficiency even at light load
Intrinsically stable
Simplicity
Readiness during the load transient
The internal PMOS is switched on when the V
FB
is lower than V
REF
-V
HYST
/2 and the current is 0A (DCM). The on time will be terminated if the
V
FB
is over V
REF
+V
HYST
/2 or if the current limit (CL) is triggered. In practice, considering the most common application conditions (L=10µH ÷
100µH; C=10µF - 100µF) and setting the CL threshold according to the load, the on time is normally terminated by the CL intervention and the
output voltage ripple will stay within 1.25% of the output voltage (typ) or V
HYST
* V
OUT
/ V
REF
.
Table 4. AS7620 Output Voltage Options
AS7620 AS7620A-BQFT AS7620B-BQFT
V
OUT
ADJ. 3.3V
2.2µF
100µF
D
1
10µH
V
OUT
3.6V to 32V
V
IN
L
X
FB
I
LIM
C
OUT
PF
R
7
R
6
R
5
R
3
R
4
C
IN
PG
AS7620-A
V
EPF
V
HYS
J
1
V
IN
SHDN
J
2
R
1
R
3
3.3V
C
1
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 9 - 16
AS7620
Datasheet - D e ta i l e d D es c r i pt io n
8.4 VOUT Selection
The AS7620-B features a 3.3V fixed output voltage. The AS7620-A provides an adjustable output from 1.2V (V
REF
) up to virtually V
IN
(see
100% Duty Cycle Operation on page 11). To select the desired V
OUT
, the related resistor divider has to be tuned according to the following
formula:
(EQ 1)
Where:
Rh is the high side resistor of the output divider
Rl is the resistor of the output divider
Note: It is suggested to select resistors in the range of hundreds of kΩ in order to limit the current consumption.
8.5 Current Limit
The current is sensed during the on time of the internal PMOS. Three different current limit thresholds can be selected by the ILIM pin:
1. 240mA (typ) ILIM shorted to GND
2. 720mA (typ) ILIM shorted to V
OUT
(from 1.5V to 3.6V)
3. 1000mA (typ) ILIM floating
This threshold is intended as peak current limit. If the current reaches the threshold during the on time, the PMOS is turned off and it will be
turned on again only when the current approaches 0A and the feedback voltage is equal or lower than V
REF
. The maximum output current is
ILIM/2.
8.6 Switching Frequency
The switching frequency (f
sw
) changes according to the application conditions and, in particular, to the output current in order to optimize the
efficiency in any load condition. Anyway, it is always possible to estimate the f
sw
during the design process. As described in the Regulation (refer
to page 8) – the converter always works in DCM and, normally, the peak current into the inductor is the CL threshold (ILIM). The average of the
inductor current must be equal to the output current. The following formula provides the relationship between inductor current and output current:
I
OUT
= (EQ 2)
Consequently, the f
sw
can be expressed as following:
(EQ 3)
Figure 18. Chart Illustrating the Fsw vs. I
OUT
in a Standard Application (V
IN
=24V, V
OUT
=3.3V, L=10µH, ILIM=1A)
V
OUT
V
REF
1Rh
Rl
-------
+
•=
1
Tsw
---------- 1
2
--- ILIM
2
L•V
IN
•
V
IN
V
OUT
–( ) V
OUT
•
--------------------------------------------------
••
Fsw 2I
OUT
•V
IN
V
OUT
–( ) V
OUT
••
ILIM
2
L•V
IN
•
----------------------------------------------------------------------------
=
Fsw vs. Iout
0
50
100
150
200
250
300
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Iout (A)
Fsw (KHz)
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 10 - 16
AS7620
Datasheet - D e ta i l e d D es c r i pt io n
8.7 Power Fail / Power Good
AS7620A-B monitors input and output voltage by VEPF (pin 11) and V
FB
(pin 5) respectively. Two dedicated flags PF (pin 10) and PG (pin 12)
are provided outside to inform about early input power fail (active low) and output within regulation. Figure 19 illustrates the typical connection for
VEPF. During start up, PF is initially low. By selecting R3, R4, R5 and R6, it is possible to set the desired input voltage threshold above which the
input power is considered stable. Once V
IN
(VDDH in Figure 19) reaches Vinth, PF is released and so an additional voltage contribution from
V
DD
is added at the VPF pin, realizing in fact a hysteresis to eliminate PF oscillation due to power supply noise.
Figure 19. Open-Drain Output Stage for Comparator
Table 5 provides the resistors values covering all the standard input BUS. The resistors values are 1% commercial values. It is mandatory to use
the correct resistors values to guarantee the respect of maximum absolute voltages at EPF and PF pin. VDD has been considered 3.3V.
Otherwise EPF pin should be shorted to GND and PF left floating.
Terminology:
VRST: Reset voltage for the EPF. It is 90% of the Input BUS voltage.
VTRIP: Trip voltage for the EPF. It is 80% of the Input BUS voltage.
8.8 Thermal Protection
The internal junction temperature is continuously monitored. If it reaches 150ºC (min), the PMOS is turned off. The device can switch again if the
temperature is decreased by at least 10ºC. If the over-temperature persists, the device will be shut down again resulting in a hiccup mode for the
output power.
Table 5. EPF Network Selection with Different Input BUS
V
IN
(V) VRST (V) VTRIP (V) R3 (KΩ) R4 (KΩ) R5 (KΩ) R6 (KΩ)
5 4.5 4 365 143 1740 1370
6 5.4 4.8 464 143 1870 1430
9 8.1 7.2 768 140 2050 1580
12 10.8 9.6 1070 140 2100 1650
15 13.5 12 1370 140 2150 1690
20 18 16 1870 140 2210 1740
24 21.6 19.2 2260 140 2260 1740
28 25.3 22.5 2670 140 2260 1740
VDDH
3.6…32V
VDD
1.2…3.6
Power Fail
R
ON
R6
R3
R4
V
REF
R5
INV
-
+
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 11 - 16
AS7620
Datasheet - A pp l i c a t io n I n f o r ma t i o n
9 Application Information
9.1 Input Capacitors
An input capacitor is required to sustain the peak current requested by the turning on of the internal PMOS. When used, the capacitor helps to
reduce the noise and saves the input battery life. The input capacitor has to withstand the input RMS current, which can be calculated by the
following formula:
(EQ 4)
While designing for wide input/output voltage range, the worst case of Irms=1/2*I
OUT
must be considered. Suggested capacitors are low ESR
OSCON, polymer, aluminum or MLCCs. Tantalum types are not recommended for their weakness in withstanding big inrush currents.
9.2 Output Inductor
The inductor together with the output capacitor represents the output filter. Using the AS7620, the inductor is charged and completely discharged
at every switching cycle being that the converter is forced to work in DCM. Values from 10µH to 100µH are suitable to work with AS7620 and its
selection should consider the following statements:
Bigger inductor implies lower f
sw
Bigger inductor implies lower bandwidth
The inductor must be rated to withstand the peak current (ILIM) and the RMS current
9.3 Output Capacitor
The output capacitor together with the inductor represents the output filter. The bigger the capacitance is, the lower will be the output ripple.
Usually, low ESR MLCCs are preferred as they are inexpensive and small in size. Any value from 10µF is suitable, considering the load transient
specifications of the application as well.
9.4 Free Wheeling Diode
The inductor current is forced through the diode during the off-times. The average current flowing through it is
The reverse voltage must be higher than the input voltage and safely it is common to consider 30% more. Normally, a schottky diode is preferred
because of its low forward voltage.
9.5 Stability
Even though the hysteretic voltage mode is intrinsically stable, an excessive noise at the FB could cause instability. For this reason care must be
taken drawing the layout, reducing the noise and shielding the FB path from it. The main noise generator is the switching node, which is
commutated from GND to V
IN
by the internal PMOS and the free wheeling diode and through which a pulse current flows. It is wise to add a
MLCC capacitor as close as possible to the V
IN
pin of the device and provide a wide/short path between the LX pin and the external components
(inductor and diode). It is preferable to draw the FB path as far as possible from the LX node and, perhaps, shielding it with a GND track. Another
recommendation is to use low ESL output capacitors, thus avoiding electrolytic parts. A big ESL adds a square wave contribution on the FB that
can make the device work improperly.
9.6 100% Duty Cycle Operation
Thanks to the PMOS structure of the internal switch, the device can actually work at 100% duty cycle. This feature is very helpful during the load
transient, because the maximum power can be transferred to the output in order to recover as fastest. The device will try to work at 100% duty
whenever the FB voltage is lower than the upper window’s threshold. Moreover, in this condition, the safety is always guaranteed by the current
limit.
Irms I
OUT
V
OUT
V
IN
V
OUT
–( )• V
IN
--------------------------------------------------•=
Irms I
OUT2
IL
2
∆3
-----------
+=
1
2
--- fsw ILIM
2
L•
V
OUT
------------------------
••
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 12 - 16
AS7620
Datasheet - A pp l i c a t io n I n f o r ma t i o n
9.7 Demo Board
A demonstration board is available to test the device functionalities and performance in a standard application. For further information, please
refer to the AS7620EB datasheet.
Figure 20. Demo Board Photograph
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 13 - 16
AS7620
Datasheet - P ac ka g e D ra w i n gs a nd M a r ki n g s
10 Package Drawings and Markings
Figure 21. 12-pin MLPQ 4x4mm Marking
Table 6. Packaging Code
YY WW X ZZ @
last two digits of the current year manufacturing week plant identifier free choice / traceability code sublot identifier
AS7620A
YYWWXZZ
@
AS7620B
YYWWXZZ
@
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 15 - 16
AS7620
Datasheet - O rd e r i ng I n f o r m a ti on
11 Ordering Information
The devices are available as the standard products shown in Table 7.
*Available on request
Note: All products are RoHS compliant.
Buy our products or get free samples online at ICdirect: http://www.ams.com/ICdirect
Technical Support is found at http://www.ams.com/Technical-Support
For further information and requests, please contact us mailto:sales@ams.com
or find your local distributor at http://www.ams.com/distributor
Table 7. Ordering Information
Ordering Code Marking Output Description Delivery Form Package
AS7620-BQFT AS7620A adjustable 500mA Hysteretic High Voltage Step-Down
Converter with Dual Power Monitor Tape and Reel 12-pin MLPQ 4x4mm
AS7620B-BQFT* AS7620B 3.3V
500mA Hysteretic High Voltage Step-Down
Converter with Dual Power Monitor
without Output Delay
Tape and Reel 12-pin MLPQ 4x4mm
www.ams.com/DC-DC_Step-Up/AS7620 Revision 1.18 16 - 16
AS7620
Datasheet
Copyrights
Copyright © 1997-2011, ams AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights
reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the
copyright owner.
All products and companies mentioned are trademarks or registered trademarks of their respective companies.
Disclaimer
Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. ams AG makes no
warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described
devices from patent infringement. ams AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior
to designing this product into a system, it is necessary to check with ams AG for current information. This product is intended for use in normal
commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability
applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing
by ams AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard
production flow, such as test flow or test location.
The information furnished here by ams AG is believed to be correct and accurate. However, ams AG shall not be liable to recipient or any third
party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indi-
rect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the tech-
nical data herein. No obligation or liability to recipient or any third party shall arise or flow out of ams AG rendering of technical or other services.
Contact Information
Headquarters
ams AG
Tobelbaderstrasse 30
A-8141 Unterpremstaetten, Austria
Tel: +43 (0) 3136 500 0
Fax: +43 (0) 3136 525 01
For Sales Offices, Distributors and Representatives, please visit:
http://www.ams.com/contact
