Texas Instruments LM8365 User Manual Download Page 15

FCC Interference Statement for Class B EVM devices

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV technician for help.

3.2

Canada

3.2.1

For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210

Concerning EVMs Including Radio Transmitters:

This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.

Concernant les EVMs avec appareils radio:

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation
est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit
accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Concerning EVMs Including Detachable Antennas:

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)
gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for
successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types
listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated.
Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited
for use with this device.

Concernant les EVMs avec antennes détachables

Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et
d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope
rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le
présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le
manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne
non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de
l'émetteur

3.3

Japan

3.3.1

Notice for EVMs delivered in Japan:

Please see

http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page

日本国内に

輸入される評価用キット、ボードについては、次のところをご覧ください。

http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page

3.3.2

Notice for Users of EVMs Considered “Radio Frequency Products” in Japan:

EVMs entering Japan may not be certified

by TI as conforming to Technical Regulations of Radio Law of Japan.

If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required by Radio Law of
Japan to follow the instructions below with respect to EVMs:

1.

Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal
Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for
Enforcement of Radio Law of Japan,

2.

Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to
EVMs, or

3.

Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan
with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note
that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan.

SPACER

SPACER

SPACER

SPACER

SPACER

Summary of Contents for LM8365

Page 1: ...LM8365EVM User Guide User s Guide Literature Number SNVU493 October 2015 ...

Page 2: ...nal and electrical characteristics consult the LM8365 datasheet SNVS233 The EVM contains one LM8365 Micropower Undervoltage Supervisor See Table 1 Table 1 Device and Package Configurations REF DES IC PACKAGE U1 LM8365BALMF27 NOPB SOT 23 1 Features INPUT Voltage Range 1 V to 6 V Extremely Low Quiescent Current 0 65 µA at VIN 2 87 V Threshold Voltage of 2 7 V High Accuracy Threshold Voltage 2 5 Acti...

Page 3: ... off and connected with proper polarity to the VIN TP1 and GND TP4 connectors The input voltage range for the EVM is 1 V to 6 V The RST TP2 pin can be used to monitor the RESET output of the LM8365 in response to various input voltages The DLY TP3 terminal provides a means for observation of the capacitor charging discharging behavior Furthermore the LM8365EVM allows for programming of the RESET o...

Page 4: ... programmed output delay As shown in Figure 1 the RST voltage follows VIN as long as the VIN voltage is above the RESET threshold When VIN falls below this threshold the RESET pin outputs low When VIN rises above the threshold the RST voltage is pulled back up to VIN corresponding to the RESET pin outputting high The LM8365 provides proper voltage supervision in critical situations like undervolta...

Page 5: ...ET pin outputs high only when VIN rises above the RESET threshold plus a certain amount of hysteresis Figure 2 shows the observed hysteresis which can eliminate erratic reset responses in certain situations for example when the input voltage is hovering very close to the threshold voltage Figure 2 RST Response to Threshold VIN 5 SNVU493 October 2015 Applications Submit Documentation Feedback Copyr...

Page 6: ...ettle to a stable voltage before the microprocessor begins running Figure 3 shows this delay which is programmed by populating J2 This corresponds to a CD capacitor of 0 1 µF In an application this provides the user confidence that the microprocessor will exit its reset state when its VCC has stabilized above the minimum operating voltage Figure 3 0 1 µF Capacitor Programmed Delay 6 Applications S...

Page 7: ...o stabilize above the RESET threshold before the supervised device can exit reset state Using the exact same setup as in Section 3 Programmed Delay with 0 1 µF Capacitor we populate J3 instead This corresponds to a CD capacitor of 1 µF Figure 4 1 µF Capacitor Programmed Delay 7 SNVU493 October 2015 Applications Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated ...

Page 8: ... 1 µF Capacitor The behavior of the 1 µF CD capacitor is shown in Figure 5 It should be noted that when the DLY terminal voltage is measured using an oscilloscope probe the CD capacitor may exhibit some leakage current into the oscilloscope probe As a result the RESET pin may output with a slightly longer delay Figure 5 1 µF Capacitor Delay Behavior 8 Applications SNVU493 October 2015 Submit Docum...

Page 9: ...nse For example if we have a microprocessor running code it is crucial that this device does not operate below its specified operating voltage This could potentially lead to disastrous results Figure 6 shows the reaction time of the RESET output when VIN falls below the RESET threshold Figure 6 RST Output Low Response 9 SNVU493 October 2015 Applications Submit Documentation Feedback Copyright 2015...

Page 10: ...t for the LM8365EVM Please note that we have provided an unpopulated footprint for C4 which allows room for an input capacitor Figure 7 Top Layer Layout 10 Board Layout SNVU493 October 2015 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated ...

Page 11: ...SNVU493 October 2015 Schematic Figure 8 LM8365EVM Schematic 11 SNVU493 October 2015 Schematic Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated ...

Page 12: ...able Labels PCB Label 0 650 H Brady THT 14 423 10 M 0 650 W x 0 200 H 10 000 per x 0 200 W roll 1 R1 RES 470 k 5 0 1 W 0603 603 Vishay Dale CRCW0603470KJNEA 3 SH J3 Shunt 100mil Gold plated Black Shunt 3M 969102 0000 DA 4 TP1 TP2 Terminal Turret TH Double Keystone 1502 2 Keystone 1502 2 TP3 TP4 1 U1 Micropower Undervoltage Sensing MF05A Texas LM8365BALMF27 Circuits with Programmable Output Instrum...

Page 13: ...dervoltage Sensing Circuits with Programmable Output Delay datasheet SNVS233 Revision History DATE REVISION NOTES October 2015 Initial release 13 SNVU493 October 2015 Related Documentation Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated ...

Page 14: ...ring the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repair such EVM or provide replacements Repaired EVMs shall be warranted for the remainder of the original warranty period Replaced EVMs shall be warranted for a new full ninety 90 day warranty period 3 ...

Page 15: ... by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are strictly prohibited for use with this device Concernant les EVMs avec antennes détachables Conformément à la rég...

Page 16: ... connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation even with the inputs and outputs kept within the specified allowable ranges some circuit components may have elevated case temperatures These components include but are not limited to linear regulators switching transistors pass transistors cu...

Page 17: ...F REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE LOSS OF DATA OR BUSINESS INTERRUPTION NO CLAIM SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN ONE YEAR AFTER THE RELATED CAUSE OF ACTION HAS OCCURRED 8 2 Specific Limitations IN NO EVENT SHALL T...

Page 18: ...esponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failur...

Reviews: