Title :
A low-voltage, micro-power 1 A switching regulator
Author_Institution :
Linear Technol. Corp., Milpitas, CA, USA
Abstract :
A switching regulator circuit that is capable of operation at supply voltages down to 1.0 V and consumes less than 100 mu A with no load, making it attractive in battery operated systems where long battery life is important, is discussed. The circuit can deliver 5 V at 50 mA with a 1.5-V input. Unlike previous low-voltage circuits, which are limited in output power, this circuit incorporates micropower control circuitry and a 1-A power switch. A low-saturation-voltage bipolar technology with implant resistors and a deep p/sup +/ diffusion for high-current lateral PNPs is used to implement the circuit. A 1-A NPN switch with a saturation resistance of 0.6 Omega and a 30-mA low-saturation lateral PNP, along with all control circuitry, are integrated on a single die.<>
Keywords :
bipolar integrated circuits; switching circuits; voltage regulators; 1 A; 5 V; 50 mA; battery operated systems; high-current lateral PNPs; low-saturation-voltage bipolar technology; micropower control circuitry; output power; saturation resistance; supply voltages; switching regulator; Batteries; Clocks; Oscillators; Power integrated circuits; Power system reliability; Regulators; Resistors; Switches; Switching circuits; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 1990. Digest of Technical Papers. 37th ISSCC., 1990 IEEE International
Conference_Location :
San Francisco, CA, USA
DOI :
10.1109/ISSCC.1990.110219
