LP2952-N, LP2952A, LP2953, LP2953A

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SNVS095F – MAY 2004 – REVISED MARCH 2015

Functional Block Diagrams (continued)

Figure 29. LP2953 Block Diagram

7.3 Feature Description

7.3.1 Fixed Voltage Options and Programmable Voltage Version

The LP2952 and LP2953 provide 2 fixed output options: 3.3 V and 5 V. To meet different requirements for the

application, they can also be used as programmable voltage regulators with external resistor networks; see

Application Information for more details.

7.3.2 High-Accuracy Output Voltage

With special and careful design to minimize all contributions to the output voltage error, the LP2952 and LP2953

distinguished themselves as very high output voltage accuracy micropower LDO. This includes a tight initial

tolerance (0.5% typical), extremely good load and line regulation, and a very low output voltage temperature

coefficient, making the part an ideal a low-power voltage reference.

7.3.3 Error Detection Comparator Output

The LP2952 and LP2953 will generate a logic low output when the output falls out of regulation by more than

approximately 5%. See Application Information for more details.

7.3.4 Auxiliary Comparator

An auxiliary comparator is designed for customer special purpose when shutdown is activated. This block is still

active and can be used to generate fault detection, low input line detection signal for system controllers. The

comparator output level is CMOS- or TTL-compatible. See Application Information for more details.

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Product Folder Links: LP2952-N LP2952A LP2953 LP2953A