MNLP2953AM-X

· Output voltage adjusts from 1.23V to 29V
· Guaranteed 250mA output current
· Extremely low quiescent current
· Low dropout voltage
· Extremely tight line and load regulation
· Very low temperature coefficient
· Current and thermal limiting
· Reverse battery protection
· 50mA (typical) output pulldown crowbar
·Auxiliary comparator included with CMOS/TTL compatible output levels. Can be used for fault detection, low input line detection, etc.
· SMD : 5962-9233601MEA*,5962-9233601QXA***,5962-9233601VEA**, 5962-9233601VXA****.

·High-efficiency linear regulator
· Regulator with under-voltage shutdown
· Low dropout battery-powered regulator
· Snap-ON/Snap-OFF regulator

Storage Temperature Range
      ........-65 C < TA < +150 C
Operating Temperature Range
      ........-55 C < TA < +125 C
Maximum Junction Temperature
     ...............+150 C
Lead Temperature
(Soldering, 5 seconds).. ... 260 C
Power Dissipation
(Note 2, 3)
       .........Internally Limited
Input Supply Voltage
      ............-20V to +30V
Feedback Input Voltage
(Note 4)
     ............-0.3V to +5V
Comparator Input Voltage
(Note 5)
    ............-0.3V to +30V
Shutdown Input Voltage
(Note 5)
     ............-3.0V to +30V
Comparator Output Voltage
(Note 5)
    ............-0.3V to +30V
Thermal Resistance
(Note 3)
ThetaJA
CERDIP (Still Air) ........74 C/W
(500LF/Min Air flow) .. ....33 C/W
CERAMIC SOIC (Still Air)....134 C/W
(500LF/Min Air flow).... .. 81 C/W
ThetaJC
CERDIP .............3 C/W
CERAMIC SOIC...... ... 7 C/W
Package Weight
(Typical)
CERDIP.............. TBD
CERAMIC SOIC.........360mg
ESD Tolerance
(Note 6)
          ...............2kV

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.

Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by Tjmax (maximum junction temperature), ThetaJA (package junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is Pdmax = (Tjmax - TA)/ThetaJA or the number given in the Absolute Maximum Ratings, whichever is lower. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown.

The LP2953A is a micropower voltage regulator with very low quiescent current (130uA typical at 1mA load) and very low dropout voltage (typ. 60mV at light load and 470mV at 250mA load current). It is ideally suited for battery-powered systems. Furthermore, the quiescent current increases only slightly at dropout, which prolongs battery life.

The LP2953A retains all the desirable characteristics of the LP2951, but offers increased output current, additional features, and an improved shutdown function.

The internal crowbar pulls the output down quickly when the shutdown is activated.The error flag of LP2953A goes low if the output voltage drops out of regulation. Reverse battery protection is provided. The internal voltage reference is made available forexternal use, providing a low-T.C. reference with very good line and load regulation.