Which is better between LD1117AG-5.0V-A SOT-223 and NCP1117-5.0?

When comparing the LD1117AG-5.0V-A SOT-223 and NCP1117-5.0 low dropout linear regulators (LDOs), it is necessary to consider multiple dimensions comprehensively. Here is a detailed comparison of the two products:

1、 Basic electrical parameters


Parameters/Model LD1117AG-5.0V-A SOT-223 NCP1117-5.0
Output voltage 5.0V (fixed) 5.0V (fixed)
The maximum output current can usually reach 1A (refer to the data manual for details) 1A
Input voltage range of 2.5V to 7.5V (or higher, please refer to the data manual for details) up to 20V
Voltage regulation accuracy up to ± 2% (specific values may vary depending on different batches or manufacturers) ± 1% (typical value)
Package forms SOT-223 SOT-223 and DPAK (multiple package options available)
2、 Performance characteristics
LD1117AG-5.0V-A SOT-223：
It has three adjustable outputs and a fixed voltage output version. The fixed voltage versions include 1.2V, 1.8V, 2.5V, 3.3V, 5.0V, etc. Other voltage specifications can be customized according to user needs.
High output voltage accuracy, good load linearity and voltage linearity performance.
Suitable for post voltage regulation of switch power supplies in computer motherboards, graphics cards, LCD monitors, DVD decoding boards, LCD TVs, ADSL and other devices.
NCP1117-5.0：
Belonging to the NCP1117 series, this series is a low leakage (LDO) forward linear voltage regulator that can provide stable output current over a wide temperature range.
Includes eight fixed output voltage versions, while providing adjustable output versions that can be programmed with external resistors to set the output voltage range.
It has on-chip fine-tuning function, which can adjust the reference/output voltage to within ± 1% accuracy range (typical value).
The internal protection functions are complete, including output current limitation, safe operation area compensation, and high temperature shutdown.
3、 Application scenarios and selection suggestions
Application scenarios:
LD1117AG-5.0V-A SOT-223 is more suitable for application scenarios that require high voltage accuracy and stability, and have a relatively fixed input voltage range.
NCP1117-5.0 is more suitable for electronic devices with stricter power management requirements due to its wider input voltage range and improved internal protection functions.
Suggestion for selection:
When making a selection, it is necessary to comprehensively consider factors such as specific application requirements, input voltage range, output voltage accuracy requirements, and cost budget.
If pursuing higher voltage accuracy and stability, and the input voltage range is relatively fixed, LD1117AG-5.0V-A SOT-223 can be considered.
If a wider input voltage range, improved internal protection functions, and higher flexibility (such as adjustable output voltage) are required, NCP1117-5.0 may be more suitable.
In summary, LD1117AG-5.0V-A SOT-223 and NCP1117-5.0 each have their unique advantages and application scenarios. When choosing, please make sure to refer to the specific product data sheet and manufacturer's guidelines to ensure that the selected product meets your application needs.