Overview
The AMS1117CD-5.0 is a popular low-dropout (LDO) linear voltage regulator designed to deliver a fixed 5.0V output with high accuracy. It is commonly used in electronic devices where stable voltage supply is critical, such as microcontrollers, sensors, and communication modules. The regulator operates with a low dropout voltage, making it efficient for battery-powered applications. Manufactured by Advanced Monolithic Systems (AMS), the AMS1117 series is known for its reliability and cost-effectiveness. The CD-5.0 variant is particularly favored for its simplicity, requiring minimal external components for operation, which simplifies circuit design and reduces production costs.
Structure and Working Principle
The AMS1117CD-5.0 consists of a voltage reference, error amplifier, and a pass transistor. The regulator compares the output voltage to an internal reference and adjusts the pass transistor to maintain a constant 5.0V output. Its low dropout feature allows it to function even when the input voltage is only slightly higher than the output voltage, typically as low as 1.1V above the output. The device includes built-in protections such as thermal shutdown and current limiting, which safeguard it from damage due to overheating or excessive load currents. These features make it suitable for robust applications where reliability is paramount.
Key Features
The AMS1117CD-5.0 offers several advantages, including a low dropout voltage of approximately 1.1V at 800mA load current. This makes it ideal for applications where the input voltage is close to the output voltage, such as battery-powered systems. The regulator also provides high output accuracy, typically within ±1% of the nominal 5.0V output. Additional features include low quiescent current, which minimizes power consumption in standby modes, and a wide operating temperature range (-40°C to +125°C), ensuring performance in harsh environments. The device is available in multiple package options, including SOT-223 and TO-252, catering to different PCB layout requirements.
Application Areas
The AMS1117CD-5.0 is widely used in consumer electronics, industrial control systems, and automotive applications. In consumer electronics, it powers microcontrollers, LCD displays, and wireless modules. Industrial applications include PLCs, motor control systems, and instrumentation, where stable voltage is crucial for accurate operation. In automotive systems, the regulator is employed in infotainment systems, sensors, and lighting controls. Its robust design and thermal protection make it suitable for environments with fluctuating temperatures and voltages. The device is also common in DIY electronics and prototyping due to its ease of use and affordability.
Maintenance and Precautions
To ensure optimal performance, the AMS1117CD-5.0 should be used within its specified voltage and current limits. Exceeding the maximum input voltage (typically 12V) can damage the device. Proper heat dissipation is essential, especially when operating at high load currents; a heatsink or adequate PCB copper area may be required. Avoid reverse polarity connections and ensure input capacitors are placed close to the regulator to minimize noise and improve stability. Regularly inspect for signs of overheating or voltage drift, which may indicate component fatigue or circuit issues.
B2B Procurement Guide
When procuring AMS1117CD-5.0 regulators in bulk, verify the supplier's authenticity to avoid counterfeit components. Reputable distributors and authorized resellers should provide datasheets and traceability. Consider lead times and minimum order quantities (MOQs), as these vary by supplier. For cost savings, explore volume discounts or alternative packaging options (e.g., tape and reel for automated assembly). Ensure compatibility with your PCB design by confirming the package type (e.g., SOT-223 for space-constrained applications). Testing samples before large-scale purchase is recommended to validate performance.
Related Manufacturers
- 主营：国巨电容、国巨电阻、三星电容、华新科、伍尔特电感、二极管、三极管、贴片电感、lm317to-220、贴片排阻、贴片电阻、贴片电容、贴片磁珠、贴片滤波器、s8050s0t23、旺诠电阻、厚声电阻
- 主营：电子元器件、集成电路IC、芯片、单片机MCU、二极管、三极管、MOS场效应管、车载芯片、电阻、保险丝、连接器、华邦
- 主营：电子元器件、集成电路、电容电阻、电感磁珠、单片机、芯片
- 主营：晶闸管、控制板、管理门、保护管、半支架、usb芯片、at93c46dn、led灯光、放大器、stf9nk90z、芯片门、超声波、传感器、pwm调光、丝印1am、cbb电容、计数器、逆变器、稳压器、贴片led、贴片tvs、绿宝石、线对板、电感器、彩色led
- 主营：[]
- 主营：数字信号IC、NANR闪存、射频晶体管、微控制器-MCU、开关IC、放大器IC、电源管理IC、接口IC、存储器IC、滤波器、电阻器、电容器、集成电路 IC、时钟与定时Ic、驱动器IC、射频放大器IC、以太网 IC、RF 开关 IC、模数转换器-ADC
- 主营：单片机 MCU、集成电路 IC、存储 IC、逻辑芯片、数据采集芯片、放大器 IC、时钟芯片
- 主营：可控硅、场效应管MOS、ESD静电二极管、TVS/二极管、稳压二极管、肖特基二极管、整流桥、高压二极管、开关二极管、快恢复二极管、普通二极管
- 主营：xg-2121ca、ob5282cpa、xv-8000lk、sy7101abc、tps562201、rx-8581sa、pbhv9115t、sy8704fcc、rx-4571nb、sy8823quc、iw1677-03、tpf144-vr、rx-8025nb、ps767d301、rx-4035sa、vc7643-61、sg-210stf、va7310xgr、ra-4574sa、继电器、ln2401ams、rx-8581nb、emf30n02j、me62r332t、ap2005per
- 主营：供电usb、降压芯片、12v-fp6291、恒流驱动、诚信经营、升压芯片、移动电源、输出电流、整流升压、PD协议芯片、双节锂电池充电升压芯片、QC3.0协议芯片、同步整流升压IC、MOS管、FP6601Q、FP6606、电源管理Ic、锂电池充电芯片、JD6606、Jd6621
- 主营：ad8619arz、锂电池、放大器、定时器、片电容、lm317mdtx、逆变器、稳压器、调制器、ldo稳压、丝印aaz、控制器、dmn601k-7、无线电、led驱动、万代aos、充电器、低功耗、三极管、收发器、处理器、计时器、存储器、隔离器、ao4619aos
- 主营：集成电路、连接器、继电器、ams1117稳压芯片、保险丝、存储器、传感器、光电耦合器、场效应管、模数转换器、8位微控制器、步进电机驱动芯片、红外遥控接收头、固态继电器、定向耦合器、运算放大器、加速度传感器、板对板连接器、内存芯片
- 主营：锂电池、稳压芯、射频管、射频器、传声器、电源稳、bom配单、电子料、比较器、功分器、驱动板、存储器、均衡器、触发器、缓冲器、继电器、解码器、集成电路芯片、二极管、三极管、电容电阻、电源、传感器、MOS管
- 主营：传感器