TLC770X Datasheet, PDF (18/27 Pages) Texas Instruments – BiCMOS SUPPLY VOLTAGE SUPERVISORS

5. Examples of Applications
To allow these Supply Voltage Supervisors to be used in a variety of systems, they have been provided with various
threshold voltages V_t .
 TLC7701: This device is needed when there are no “standard” supply voltages to be monitored. The desired
threshold voltage can be set by means of external voltage divider (See Section 3).
 TLC7703: For battery operated applications with nominal supply voltages of 3.3V, but with which a minimum
supply voltage of 2.7V is permissible, in order to extend the operating time.
 TLC7733: For applications requiring a nominal supply voltage of 3.3V (±10%).
 TLC7705: For applications in microcomputer systems, which operate from a supply voltage of 5V.
5.1 Voltage Monitoring
For the construction of a circuit to monitor a “standard” voltage, the only additional external component needed is the
timing capacitor C_t. (See Figure 16.)
Figure 16. Simple voltage monitoring circuit with the TLC7705
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