Page 376 - Complete Wireless Design

Support Circuit Design

Support Circuit Design 375

Figure 8.50 3-T regulator set for 5.5-V output.

Figure 8.51 Other 3-T regulator protection circuits.

If a regulator must turn on slowly, the circuit values (with R still calculated
2
as above) should be as shown in Fig. 8.52.
Figure 8.53 demonstrates a standard DC-DC regulator circuit that converts
13.7 VDC input to a 5.5 VDC output, with polarity (D ), transient (TVS), over-
2
current (F ), and overvoltage (D ) protection, a power-on indicator (LED), and
1 1
LC noise and ripple filtering (L , C , and C ).
1 1 2

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