Published:2009/7/24 3:46:00 Author:Jessie | From:SeekIC
Figure 8-6 shows the MAX667 connected to provide a programmable output from +1.3 V to +16 V, with a low-battery function. Let R1 be 1 MΩ, and select R2 for a desired output using: R2= R1× (VOUT/VSET-1), where VSET= 1.225 V. Let R4 be 2.4 MΩ, and select R3 for a desired threshold of the low-battery detector using: R3=R4 ×(VBATT/VLBI-1). where VBATT is the desired threshold of the low-battery detector, and R3/R4 are the LBI input divider resistors. If VOUT is 5 V, a 5.5-V low-battery threshold can be set using 8.2 MΩ for R3 and 2.4 MΩ for R4. MAXIM NEW RELEASES DATA BOOk, 1992, p 4-137.
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