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Low Voltage Integrated Regulator Circuit

IP.com Disclosure Number: IPCOM000034351D
Original Publication Date: 1989-Feb-01
Included in the Prior Art Database: 2005-Jan-27

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Cvijanovic, MC Karne, RK [+details]


This Low Voltage Integrated Regulator Circuit (LVIRC) is based on Widler's bandgap reference circuit and an improved error amplifier design. In Fig. 1 the output of the regulator circuit is 1.7 V and the input is 5 +/- 10% and includes a reference circuit shown in Fig. 2. The load regulation of the circuit is 0.12% over 1.8 amperes and the temperature variation is 0.53% over 85oC. The overall statistical average worst-case regulation is +- 7.6%. This regulator circuit is designed for use on a master slice as an on-chip voltage regulator to supply the +1.7 V necessary for an internal cell array and can be used in any other application where low voltage and high load currents are required. (Image Omitted) In Fig.