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Part Number: LM9072
Description: The LM9072 is a high performance voltage regulator system with operational and protection features tha...
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LM9072
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DataSheet
General Description
LM9072 General Description
The LM9072 is a high performance voltage regulator system with operational and protection features that address many requirements of automotive applications. Two regulated outputs are provided.
The main regulator provides a precision 2% maximum tolerance 5V output at 350 mAwith a low dropout characteristic.
The second regulator provides a 5V output that tracks the main regulator output voltage within 1.5% with load currents up to 80 mA.
The tracking output is ideal for use in powering remotely located sensors with outputs that are ratiometric to the main system supply. This output is fully protected from short circuits to ground or the unregulated input supply (ignition or battery potentials in automotive applications).
The LM9072 also contains a programmable delayed system reset output. Two control inputs are provided. An ON/OFF input intended for connection to an ignition switch, and a Keep Alive input to allow a system to remain powered after ignition has been switched OFF. For EMC concerns the LM9072 remains fully operational and does not generate false rest signals while subjected to, 1 MHz to 400 MHz bulk current injection signals greater than 100 mA on the input supply and tracking output lines.
LM9072 Maximum Ratings
Input Voltage (Continuous) .............................................−45V to 45V
Input Voltage (Transient, t 400 ms) ..........................................60V
Forced Output Voltages
Main Output ......................................................................−0.3V to 7V
Tracking Output ..............................................................−0.3V to 27V
ON/OFF Input Voltage (Note 6) .......................................−0.3V to 16V
ON/OFF Input Current ............................................................± 20 mA
Keep Alive In, Reset Out,
CDELAY Voltage .................................................................−0.3V to 7V
Junction Temperature ..................................................................150
Storage Temperature Range .......................................−65 to +150
ESD Susceptibility (Note 2) .........................................................2000V
Lead Temperature
(Soldering, 10 seconds) ...............................................................265
Input Voltage (Transient, t 400 ms) ..........................................60V
Forced Output Voltages
Main Output ......................................................................−0.3V to 7V
Tracking Output ..............................................................−0.3V to 27V
ON/OFF Input Voltage (Note 6) .......................................−0.3V to 16V
ON/OFF Input Current ............................................................± 20 mA
Keep Alive In, Reset Out,
CDELAY Voltage .................................................................−0.3V to 7V
Junction Temperature ..................................................................150
Storage Temperature Range .......................................−65 to +150
ESD Susceptibility (Note 2) .........................................................2000V
Lead Temperature
(Soldering, 10 seconds) ...............................................................265
LM9072 Features
`Two 5V regulated outputs:
- 350 mA, 2% Main output
- 80 mA, 1.5% Tracking output
`Good EMI (1 MHz to 400 MHz, BCI) immunity
`Separate ON/OFF and Keep-Alive control inputs
`Less than 100 µA quiescent current in OFF state
`Programmable delayed reset output
`Input transient protection over 60V to −45V
`Tracking output protected from shorts to battery
`Less than 1V dropout at full load
`−40°C to +125°C operating temperature range
`Surface mount TO-263 Power Package and Standard TO-220 power package
- 350 mA, 2% Main output
- 80 mA, 1.5% Tracking output
`Good EMI (1 MHz to 400 MHz, BCI) immunity
`Separate ON/OFF and Keep-Alive control inputs
`Less than 100 µA quiescent current in OFF state
`Programmable delayed reset output
`Input transient protection over 60V to −45V
`Tracking output protected from shorts to battery
`Less than 1V dropout at full load
`−40°C to +125°C operating temperature range
`Surface mount TO-263 Power Package and Standard TO-220 power package
LM9072 Typical Application
`Automotive module supply power conditioning
`Remote sensor biasing
`Ratiometric to supply sensor detection
`Continuous operation for save routines and EPROM programming after power down command
`Safety related systems-EMC operational
LM9072
PDF/DataSheet Download
- Datasheet: LM9072
- File Size: 488545 KB
- Manufacturer: NSC [National Semiconductor]
- Click here to Download
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