Rainbow Electronics LM61 - Manual (Page 4)

Electrical Characteristics
(Continued)
Note 10: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output due to heating effects can be
computed by multiplying the internal dissipation by the thermal resistance.
Note 11: For best long-term stability, any precision circuit will give best results if the unit is aged at a warm temperature, and/or temperature cycled for at least 46
hours before long-term life test begins. This is especially true when a small (Surface-Mount) part is wave-soldered; allow time for stress relaxation to occur. The
majority of the drift will occur in the first 1000 hours at elevated temperatures. The drift after 1000 hours will not continue at the first 1000 hour rate.
Typical Performance Characteristics
The LM61 in the SOT-23 package mounted to a printed cir-
cuit board as shown in Figure 2 was used to generate the following thermal curves.
Thermal Resistance
Junction to Air
Thermal Time Constant Thermal Response in
Still Air with Heat Sink
01289703 01289704 01289705
Thermal Response
in Stirred Oil Bath
with Heat Sink
Thermal Response in Still
Air without a Heat Sink
Quiescent Current
vs. Temperature
01289706 01289708 01289709
Accuracy vs Temperature Noise Voltage Supply Voltage
vs Supply Current
01289710
01289711 01289712
LM61
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