一种双极型LDO线性稳压器的设计  

Design of a Bipolar LDO Linear Regulator

作　　者：白欢利[1] 令文生[1] 姜洪雨 于洪波 

机构地区：[1]西安微电子技术研究所,西安710054 [2]西安太乙电子有限公司,西安710054

出　　处：《科学技术与工程》2010年第8期1985-1988,共4页Science Technology and Engineering

摘　　要：介绍了一种基于双极型工艺的线性稳压器设计。该电路主要应用于便携式电子产品的电源系统，调整管采用超β横向PNP管，使其具有低压差、低静态电流、低线性调整率和低负载调整率的特点，同时含有使能开关、过温、过压和过流保护等功能。用hspice进行仿真，仿真结果表明，在（-55～125）℃的范围内，基准温漂可达到20×10^-6（ppm）／℃；在（5～26）V的电源电压中，电压线性调整率可达到±1％。Design of a LDO Linear Regulator circuit based on bipolar technology is presented. The structure of the circuit is mainly used in power systems of portable electronics. A super β lateral PNP is used as the output pass transistor, so that the design of this structure has low dropout, low quiescent current, low-linear regulation and load regulation characteristics, and has the functions of ON/OFF, the thermal, overvolt and overcurrent profection. The simulation results with hspice show that the temperature drift up to 20 ppm / ℃ in the range of （ -55 - 125℃ ; and the voltage linear regulation can reach ± 1% in the （5 - 26）V power supply voltage.

关 键 词：低压差线性稳压器 双极型 超β横向PNP管 线性调整率 负载调整率 

分 类 号：TN867[电子电信—信息与通信工程]