LT1172IS8
Overview
The LT1172IS8 is a versatile voltage regulator IC designed for precision power supply applications. Manufactured by Linear Technology (now part of Analog Devices), it is widely used in industrial, automotive, and consumer electronics. The device offers high efficiency and low dropout voltage, making it suitable for battery-operated systems. Its compact SO-8 package allows for easy integration into space-constrained designs. The LT1172IS8 is particularly valued for its robustness, featuring built-in protection mechanisms such as thermal shutdown and current limiting.
Structure and Working Principle
The LT1172IS8 integrates a reference voltage source, error amplifier, and pass transistor to regulate output voltage. It operates by comparing the output voltage to an internal reference and adjusting the pass transistor to maintain stability. Key internal components include a bandgap reference for precision and a feedback loop for dynamic adjustment. The device can handle input voltages up to 60V and delivers output currents up to 500mA, depending on thermal conditions.
Key Features
The LT1172IS8 stands out for its low dropout voltage, typically 1V at full load, which enhances efficiency in low-input-voltage scenarios. It also includes thermal shutdown protection to prevent damage from overheating. Other notable features include adjustable output voltage (via external resistors), low quiescent current (around 5mA), and high ripple rejection. These characteristics make it suitable for noise-sensitive applications like medical devices and instrumentation.
Application Areas
Common applications include power supplies for industrial control systems, automotive electronics, and portable devices. Its efficiency makes it ideal for battery-powered equipment like handheld meters and wireless sensors. In addition, the LT1172IS8 is used in telecom infrastructure, where stable voltage regulation is critical. Its ability to operate over a wide temperature range (-40°C to 125°C) ensures reliability in harsh environments.
Maintenance and Precautions
To ensure optimal performance, provide adequate heat sinking for high-current applications. The device's thermal resistance must be considered to avoid overheating. Input voltage should not exceed the specified maximum (60V) to prevent damage. When designing PCB layouts, minimize trace lengths between the IC and external components to reduce noise. Decoupling capacitors should be placed close to the input and output pins for stability.
B2B Procurement Guide
When sourcing the LT1172IS8, verify authenticity by purchasing from authorized distributors like Digi-Key, Mouser, or Arrow Electronics. Bulk orders (100+ units) often qualify for discounts, reducing per-unit costs. Check for alternative part numbers (e.g., LT1172IS8#PBF) to ensure compatibility. Lead times vary; plan procurement in advance for time-sensitive projects. Evaluate supplier reliability and technical support capabilities.
Related Manufacturers
- 主营：lmv824pwr、mic5158ym、cgb-1089z、lt3024ife、lt1225cs8、lt3748ims、lt3574ems、lt1009is8、lt1009cs8、lt3508hfe、ltc1929cg、lt1787cs8、lt1304cs8、lt3748ems、ltc2852hs、assr-4119、assr-4118、assr-4111、assr-4110、lmc6064im、lmv844max、lm5101bma、ina2322ea、el4581csz、assr-1611
- 主营：恩智浦、英飞凌、德州仪器、电子元器件、集成电路、Ic芯片、ST
- 主营：mic3172bm、vsc8211vw、mb90f497g、lt6015is5、lt1469is8、upd8861cy、max660epa、smp220sri、tb9102fng、uda1352hl、max634esa、upc2757tb、tea1721ft、m51958bfp、ad7534knz、acpl-k44t、w681360sg、ps7802-1a、tda5030at、os8104aaq、max998esa、ad9050brs、acpl-p456、tmc222-si、opa2350ea
- 主营：IC、集成电路、电子元器件
- 主营：ad8551arz、lm4030cmf、ad8048arz、ad8554arz、ad5541crz、ad8033arz、adr290frz、ad8616arz、ads7844eb、ad5541brz、adr435brz、ad8029arz、ad8001arz、adr293erz、ad604arsz、ad8606arz、ad8031brz、adm708arz、ST、TI、Infineon、ADI、ON、MAXIM
- 主营：芯片、集成电路、FPGA、微控制器、连接器、电源控制器、监控电路、隔离模块、电源管理芯片、动态随机存储器、现场可编程门阵列、钽质电容器、电阻、时钟缓冲器、模数转换器、均衡器、稳压器、数字信号处理器、高速运算放大器
- 主营：tps2062cd、tps2056ad、qpb3321sr、qpb8888sr、tps2091dr、tps2114pw、tps2044ad、tps2055ad、tps2057dr、tps2115pw、tps2022dr、tps2021dr、tps2043dr、qpb2318sr、tps2066dr、qpb3311sr、tps2062ad、tps2095dr、tps2067dr、tps2087dr、tga2573-2、tps2013ad、tps2046dr、tps2058ad、tps2010ad
- 主营：ltc4063edd#trpbf、电源芯片、pbffet输入运放
- 主营：收发器、处理器、控制器、解码器、放大器、adi模数、htc电源、lm339apwr、整流器、存储器、74hc245pw、连接器、sst存储、计数器、滤波器、adi数模
- 主营：集成电路IC、MCU单片机、电源管理芯片、电感、连接器
- 主营：pj-608-5a、sot-9x3-3、hvssop-10、to-220-7c、聚丙烯、sot-363-6、pg-dso-12、mpx5010dp、电阻smd、sod-323he、htssop-20、tdfn2x2-8、es1g-tr3g、sk310br5g、缓冲器、继电器、smf3w10rj、数码管、mpx5100dp、74hc4538d、es1d-tr3g、14d621k-b、byg20jr3g、连接器、rs1m-tr3g
- 主营：bzt52c10s、ba45f6730、6098-0516、ee-sx872a、i5-6300hq、ki2048-mr、74hc4051d、aons62602、lm324dr2g、cm32m101a、锂电池、upc1237ha、ee-sx1042、bzx55c5v1、lrs-35-24、2sc1162-c、max998esa、ee-sx673a、tcd1304dg、bs45f3833、afb0812sh、swsw3516h、op2177arz、合成赢、ucc27323p
- 主营：h8210kbda、74hc4017d、h8124rbca、amc80aipw、sm6t100ah、h4p10kfda、sn7407nsr、stef12pur、cb7jbr200、aev14024w、adm207anz、cfr16j56r、sqpw715rj、rtd34024f、smcj64ahe、复用器、el8302iuz、cfr16j4k7、tssop-8-b、h495k3bda、sgp1610n2、h8432kbya、ww1ft54r9、h812r1dca、8403615ja