Datasheet

A S7 6 2 0
6 50 m A , U lt r a lo w Ri p p le S te p Do w n D C/ DC Co n v e r te r
1 General Description
2 Key Features
Low quiescent current for efficient partial load operation
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 batterybacked 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.
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
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.
Resistor-programmable Early Power Fail Warning Input
Power-Good Flag
Thermal Shutdown
Fixed 3.3V and adjustable output (1.2V to VIN)
Small 4x4mm 12-Lead MLPQ Enhanced Power Package
By selecting an appropriate inductor value, operating current can be
lowered and switching frequencies tuned to certain load conditions.
Specified from -40ºC to +125ºC junction and 85ºC maximum
ambient temperatures
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
3 Applications
The AS7620 is suitable for Industrial 24VDC applications like PLCs,
robotics; Home Security and Building Control applications; Solidstate utility meters; Signage and LED column power; and Sensor
interfaces.
VIN
LDO
Temp
SHDN
FB
Hysteretic
Controller
Level
Shifter
Soft-Start
+
-
ISENSE
LX
ILIM
PG
VREF
+
-
PF
AS7620
VEPF
www.ams.com/DC-DC_Step-Up/AS7620
+
-
Revision 1.18
1 - 16
AS7620
Datasheet - P i n A s s i g n m e n t s
4 Pin Assignments
2
LX
3
VEPF
PF
10
AS7620
PGND
9
GND
8
GND
7
4
5
6
ILIM
GND
11
FB
1
12
GND
VIN
PG
Figure 2. Pin Assignments (Top View)
SHDN
4.1 Pin Descriptions
Table 1. Pin Descriptions
Pin Number
Pin Name
1
VIN
High Voltage Power Supply Input
2
GND
Must be connected to GND
3
LX
4
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
11
VEPF
12
PG
Pad
PGND
www.ams.com/DC-DC_Step-Up/AS7620
Description
Power Output to Inductor
Must be connected to GND
Early Power Fail output, open drain, active LOW
Comparator voltage input for early power fail warning
Power Good, open drain, active HIGH output, monitors feedback voltage
Exposed pad. Connect to GND plane to help thermal dissipation
Revision 1.18
2 - 16
AS7620
Datasheet - A b s o l u t e M a x i m u m R a t 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
VIN
-0.3
40
V
LX
-0.3
VIN+0.3
V
FB, SHDN
-0.3
VIN+0.3
or 5.5
V
All other pins except LX, FB and SHDN
-0.3
3.6
V
Input Current (latch-up immunity)
-30
+30
mA
Norm: JEDEC 78
kV
Norm: MIL 883 E method 3015
W
θJA = 32ºC/W for a 4-layer board, 4 vias, TAMB =
+70ºC
Whichever is lower
1
Electrostatic Discharge
Electrostatic Discharge HBM
+/- 1
Temperature Ranges and Storage Conditions
Package Power Dissipation
Storage Temperature
1
-55
Junction Temperature
Package body temperature
Humidity non-condensing
Moisture Sensitive Level
5
150
ºC
150
ºC
260
ºC
85
%
3
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).
Represents a max. floor life time of 168h
1. Voltage on pin 7 (SHDN) limited to +5.5V
www.ams.com/DC-DC_Step-Up/AS7620
Revision 1.18
3 - 16
AS7620
Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s
6 Electrical Characteristics
VOUT=3.3V, LX=10µH, CX=100µF, typical values at VIN= +24V and TAMB= +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
TAMB
Operating Temperature Range
TJ
Operating Junction Temperature
VIN
VCC
VST
Conditions
Input Voltage Range
VEPF, ILIM
Start-up Voltage
VFB
Output Voltage
Feedback voltage
AS7620-B
AS7620-A
Controller Hysteresis
AS7620-A
AS7620-B
Typ
Units
-40
85
ºC
-40
125
ºC
32
V
3.6
V
24
-0.3
3.3
V
1.19
Initial, at 25ºC amb.
3.267
Over line, load and temperature
3.218
Initial, at 25ºC amb.
1.178
Over line and temperature
1.166
AS7620-B
VHYS
Max
3.6
AS7620-A
VOUT
Min
At FB node
VIN
3.300
3.333
3.383
1.190
1.202
1.214
3.218
3.300
3.383
8
15
30
22
42
82
V
V
V
V
mV
VEPF
Early Power Fail Threshold
at VEPF
VPG
Power Good Threshold
of VFB at FB pin
Line Regulation
VIN=8V to 24V, RL=200Ω
0.1
%/V
Load Regulation
10% to 90% load change
0.9
%
IFB
IOUT
Input Bias Current
AS7620-A
AS7620-B
91
FB pin
93
3
Output Current
ILIM=0V
ILIM
1.19
Switch Current Limit
1
ILIM=VOUT
2
ILIM=open
At VIN=3.6V
tON
Minimum On-Time
Current limit is not attained to turn off the
switch before the minimum on-time expired
tOFF
Minimum Off-Time
IQ
Quiescent Current
ISHDN
95
%
200
nA
5
µA
ILIM/2
mA
192
240
288
576
720
864
800
1000
1200
0.4
0.8
Ω
100
%
P-Channel on resistance
Maximum Duty Cycle
V
mA
8
10
12
µs
0.22
0.42
0.62
µs
Non-switching
30
45
µA
IOUT=500µA
37
Shutdown Current
TAMB= +25ºC
1
VLO
Shutdown Threshold
IIBN
Logic Input Bias Current
TSHDN
Shutdown Temperature
160
ºC
TSHDN Hysteresis
10
ºC
µA
5
µA
SHDN
1
V
SHDN
1
µA
1. LX=100µH, CX=10µF, Initial accuracy only. For temperature variation, please refer to performance graphs.
2. VOUT from 1.5V to 3.6V
www.ams.com/DC-DC_Step-Up/AS7620
Revision 1.18
4 - 16
AS7620
Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s
7 Typical Operating Characteristics
Figure 3. Efficiency vs. Output Current, VOUT=4.5V
Figure 4. PMOS Rdson vs. Temperature
1000
100
900
VIN=12V
800
Rdson (mohm) .
Efficiency (%)
90
VIN=5V
VIN=24V
80
VIN=32V
70
60
700
600
500
400
300
50
200
100
40
0
-40 -20
30
1
10
100
0
20
40
60 80 100 120
Temp (C)
1000
Iout (mA)
Figure 5. GND Current vs. IOUT @ TAMB
Figure 6. GND Current vs. Temperature @ IOUT=0A
42.0
10000
VIN=24V
100
38.0
VIN=12V
IGND (uA)
IGND (uA)
1000
VIN=5V
VIN=32V
VIN=24V
40.0
36.0
34.0
32.0
10
VIN=12V
VIN=32V
30.0
VIN=5V
28.0
12
0
80
10
0
Temp (C)
Iout (mA)
www.ams.com/DC-DC_Step-Up/AS7620
60
1000.0
40
100.0
20
10.0
0
1.0
-4
0
-2
0
1
Revision 1.18
5 - 16
AS7620
Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s
Figure 7. Current Limit Threshold vs. VIN
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
Figure 8. Average Switching Frequency vs. VIN
1000000
IOUT=500mA
100000
Fsw (Hz)
CL (mA)
ILIM FLOATING
ILIM VOUT
IOUT=50mA
10000
IOUT=5mA
1000
ILIM GND
IOUT=500µA
100
5
10
15
20
25
5 7 9 11 13 15 1719 21 23 25 27 29 31
30
Vin (V)
Vin (V)
Figure 9. Average Switching Frequency vs. IOUT (ILIM=open)
Figure 10. Shutdown Current vs. Temperature
1.8
330000
VIN=24V
1.7
270000
1.6
240000
1.5
ISHDN (uA)
Fsw (Hz)
300000
VIN=12V
210000
180000
150000
VIN=32V
120000
VIN=5V
1.4
VIN=24V
1.3
1.2
VIN=12V
1.1
90000
1
60000
VIN=5V
0.9
30000
0.8
-40 -20
0
0
100
200
300
400
500
0
20
40
60
Figure 11. Line Regulation @ IOUT=10mA
Figure 12. Line Regulation @ IOUT=500mA
0.400%
0.600%
0.300%
Vout Variation (%)
0.800%
0.400%
0.200%
0.000%
-0.200%
-0.400%
0.200%
0.100%
0.000%
-0.100%
-0.200%
-0.600%
-0.300%
-0.800%
-0.400%
-10%
-10%
10%
10%
Vin Variation (%)
www.ams.com/DC-DC_Step-Up/AS7620
80 100 120
Temp (C)
Iout (mA)
Vout Variation (%)
VIN=32V
Vin Variation (%)
Revision 1.18
6 - 16
AS7620
Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s
Figure 13. Load Regulation
Figure 14. Line Regulation VOUT=5V @ 10mA
1.000%
0.800%
Vout Variation %
0.600%
VOUT
0.400%
0.200%
0.000%
-0.200% 0.1
1
10
100
1000
-0.400%
VIN
-0.600%
-0.800%
-1.000%
Iout (mA)
Figure 15. Line Regulation VOUT=5V @ 10mA
Figure 16. Load Regulation VOUT=5V 10mA→500mA
VOUT
VIN
Note: All measurements taken at VIN=24V, VOUT=3.3V, and TAMB=25ºC using the typical application circuit specified in Figure 17, unless
otherwise specified.
www.ams.com/DC-DC_Step-Up/AS7620
Revision 1.18
7 - 16
AS7620
Datasheet - D e t a i l e d D e s c r i p t i o n
8 Detailed Description
Figure 17. System Diagram of AS7620-A with Early Power Fail Warning
3.6V to 32V
VIN
3.3V
CIN
2.2µF
R6
R3
VIN
R7
VHYS
10µH
LX
VOUT
R4
VEPF
R5
AS7620-A
FB
D1 COUT
100µF
SHDN
ILIM
PF
PG
R1
C1
R3
J1
J2
Table 4. AS7620 Output Voltage Options
AS7620
AS7620A-BQFT
AS7620B-BQFT
VOUT
ADJ.
3.3V
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 (VFB) 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 VFB is lower than VREF-VHYST/2 and the current is 0A (DCM). The on time will be terminated if the
VFB is over VREF+VHYST/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 VHYST * VOUT / VREF.
www.ams.com/DC-DC_Step-Up/AS7620
Revision 1.18
8 - 16
AS7620
Datasheet - D e t a i l e d D e s c r i p t i o 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 (VREF) up to virtually VIN (see
100% Duty Cycle Operation on page 11). To select the desired VOUT, the related resistor divider has to be tuned according to the following
formula:
Rh
V OUT = V REF •  1 + -------

Rl 
(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 VOUT (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 VREF. The maximum output current is
ILIM/2.
8.6 Switching Frequency
The switching frequency (fsw) 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 fsw 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:
1
Tsw
1
2
2
ILIM • L • V
( V IN – V OUT ) • V OUT
IN
IOUT = ---------- • --- • --------------------------------------------------
(EQ 2)
Consequently, the fsw can be expressed as following:
2 • IOUT • ( V IN – V OUT ) • V OUT
Fsw = --------------------------------------------------------------------------2
ILIM • L • V IN
(EQ 3)
Figure 18. Chart Illustrating the Fsw vs. IOUT in a Standard Application (VIN=24V, VOUT=3.3V, L=10µH, ILIM=1A)
Fsw vs. Iout
300
Fsw (KHz)
250
200
150
100
50
0
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
Iout (A)
www.ams.com/DC-DC_Step-Up/AS7620
Revision 1.18
9 - 16
AS7620
Datasheet - D e t a i l e d D e s c r i p t i o n
8.7 Power Fail / Power Good
AS7620A-B monitors input and output voltage by VEPF (pin 11) and VFB (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 VIN (VDDH in Figure 19) reaches Vinth, PF is released and so an additional voltage contribution from
VDD 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
VDD
1.2…3.6
VDDH
3.6…32V
R6
Power Fail
RON
VREF
R3
INV
+
R4
R5
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.
Table 5. EPF Network Selection with Different Input BUS
VIN (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
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.
www.ams.com/DC-DC_Step-Up/AS7620
Revision 1.18
10 - 16
AS7620
Datasheet - A p p l i c a t i o n I n f o r m a 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:
V OUT • ( V IN – V OUT )
Irms = IOUT • -------------------------------------------------V IN
(EQ 4)
While designing for wide input/output voltage range, the worst case of Irms=1/2*IOUT 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 fsw
Bigger inductor implies lower bandwidth
2
The inductor must be rated to withstand the peak current (ILIM) and the RMS current Irms =
∆IL
2
I OUT + ----------3
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
1
2
2
ILIM • L
V OUT
The inductor current is forced through the diode during the off-times. The average current flowing through it is --- • fsw • -----------------------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 VIN 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 VIN 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.
www.ams.com/DC-DC_Step-Up/AS7620
Revision 1.18
11 - 16
AS7620
Datasheet - A p p l i c a t i o n I n f o r m a 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
12 - 16
AS7620
Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s
10 Package Drawings and Markings
Figure 21. 12-pin MLPQ 4x4mm Marking
AS7620A
AS7620B
YYWWXZZ
YYWWXZZ
@
@
Table 6. Packaging Code
YY
last two digits of the current year
WW
manufacturing week
www.ams.com/DC-DC_Step-Up/AS7620
X
ZZ
@
plant identifier
free choice / traceability code
sublot identifier
Revision 1.18
13 - 16
AS7620
Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s
Figure 22. 12-pin MLPQ 4x4mm Package
www.ams.com/DC-DC_Step-Up/AS7620
Revision 1.18
14 - 16
AS7620
Datasheet - O r d e r i n g I n f o r m a t i o n
11 Ordering Information
The devices are available as the standard products shown in Table 7.
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
*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:[email protected]
or find your local distributor at http://www.ams.com/distributor
www.ams.com/DC-DC_Step-Up/AS7620
Revision 1.18
15 - 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 indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical 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
www.ams.com/DC-DC_Step-Up/AS7620
Revision 1.18
16 - 16
Similar pages