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AP1117E50L-13 Equivalent & Substitute Parts
Part Overview
The AP1117E50L-13 is a linear voltage regulator IC manufactured by Diodes Incorporated, delivering a fixed 5V output at 1A in a SOT-223-3 surface mount package. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The AP1117E50L-13 provides positive fixed output regulation with integrated over-current and over-temperature protection, suitable for applications requiring stable 5V power delivery from input sources up to 18V.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | AP1117E50L-13 |
| Manufacturer | Diodes Incorporated |
| Category | Power Management (PMIC) |
| Output Voltage (Fixed) | 5V |
| Output Current | 1A |
| Input Voltage (Max) | 18V |
| Voltage Dropout (Max) | 1.4V @ 1A |
| Quiescent Current | 10 mA |
| PSRR | 60dB (180Hz) |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | 0°C ~ 125°C |
| Package / Case | TO-261-4, TO-261AA (SOT-223-3) |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the AP1117E50L-13 are selected based on the following critical parameters that determine functional equivalence:
- Fixed 5V output voltage
- SOT-223 package family (SOT-223-3 or SOT-223-4)
- Positive output configuration
- Surface mount mounting type
- Over-current and over-temperature protection
- ROHS3 compliance and REACH unaffected status
The substitute parts listed operate at reduced output current (800mA vs. 1A) but maintain electrical compatibility for applications not requiring the full 1A capacity. All substitutes feature improved or equivalent voltage dropout characteristics, enhanced PSRR performance, and active product status, providing superior long-term availability compared to the obsolete AP1117E50L-13.
Parameter Comparison
| Part Number | Manufacturer | Output Voltage | Output Current | Input Voltage (Max) | Dropout @ Rated Current | Quiescent Current | PSRR | Operating Temp | Package | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|
| AP1117E50L-13 | Diodes Inc. | 5V | 1A | 18V | 1.4V @ 1A | 10 mA | 60dB (180Hz) | 0°C ~ 125°C | SOT-223-3 | Obsolete |
| LD1117S50CTR | STMicroelectronics | 5V | 800mA | 15V | 1.3V @ 800mA | 10 mA | 75dB (120Hz) | -40°C ~ 125°C | SOT-223 | Active |
| LD1117S50TR | STMicroelectronics | 5V | 800mA | 15V | 1.2V @ 800mA | 10 mA | 75dB (120Hz) | 0°C ~ 125°C | SOT-223 | Active |
| LM1117IMP-5.0/NOPB | Texas Instruments | 5V | 800mA | 15V | 1.2V @ 800mA | 5 mA | 75dB (120Hz) | -40°C ~ 125°C | SOT-223 | Active |
| LM1117IMPX-5.0/NOPB | Texas Instruments | 5V | 800mA | 15V | 1.2V @ 800mA | 5 mA | 75dB (120Hz) | -40°C ~ 125°C | SOT-223-4 | Active |
| LM1117MP-5.0/NOPB | Texas Instruments | 5V | 800mA | 15V | 1.2V @ 800mA | 5 mA | 75dB (120Hz) | 0°C ~ 125°C | SOT-223 | Active |
| LM1117MPX-5.0/NOPB | Texas Instruments | 5V | 800mA | 15V | 1.2V @ 800mA | 5 mA | 75dB (120Hz) | 0°C ~ 125°C | SOT-223-4 | Active |
| LT1117CST-5#PBF | Analog Devices Inc. | 5V | 800mA | 15V | 1.2V @ 800mA | 10 mA | 75dB (120Hz) | 0°C ~ 125°C | SOT-223-3 | Active |
| LT1117CST-5#TRPBF | Analog Devices Inc. | 5V | 800mA | 15V | 1.2V @ 800mA | 10 mA | 75dB (120Hz) | 0°C ~ 125°C | SOT-223-3 | Active |
| LT1117IST-5#PBF | Analog Devices Inc. | 5V | 800mA | 15V | 1.3V @ 800mA | 10 mA | 75dB (120Hz) | -40°C ~ 125°C | SOT-223-3 | Active |
| LT1117IST-5#TRPBF | Analog Devices Inc. | 5V | 800mA | 15V | 1.3V @ 800mA | 10 mA | 75dB (120Hz) | -40°C ~ 125°C | SOT-223-3 | Active |
Engineering Selection Recommendations
All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the AP1117E50L-13. Selection among substitutes depends on specific application constraints:
For applications requiring extended temperature range (-40°C operation): LD1117S50CTR, LM1117IMP-5.0/NOPB, LM1117IMPX-5.0/NOPB, LT1117IST-5#PBF, and LT1117IST-5#TRPBF provide operation from -40°C to 125°C.
For standard industrial temperature range (0°C to 125°C): LD1117S50TR, LM1117MP-5.0/NOPB, LM1117MPX-5.0/NOPB, LT1117CST-5#PBF, and LT1117CST-5#TRPBF are suitable.
For SOT-223-3 package compatibility: LT1117 series parts (Analog Devices) and LD1117S50TR (STMicroelectronics) maintain the exact three-pin configuration of the original AP1117E50L-13.
For SOT-223-4 package variants: LM1117IMPX-5.0/NOPB and LM1117MPX-5.0/NOPB offer four-pin configurations with improved thermal characteristics.
All substitutes are active products with established supply chains, providing superior long-term availability compared to the obsolete AP1117E50L-13.
Frequently Asked Questions (FAQ)
Q: Can I directly replace AP1117E50L-13 with any of these substitutes?
A: Direct replacement is possible for applications drawing 800mA or less. The AP1117E50L-13 supports 1A output, while all listed substitutes are rated for 800mA maximum. Verify your application's actual current draw before substitution. All substitutes share the same 5V fixed output voltage and SOT-223 package family.
Q: What is the difference between SOT-223-3 and SOT-223-4 packages?
A: SOT-223-3 contains three pins (input, output, ground), while SOT-223-4 adds a fourth pin for improved thermal performance. Both are mechanically compatible with standard SOT-223 footprints, though SOT-223-4 provides better heat dissipation. The LM1117 variants with "X" designation (IMPX, MPX) use SOT-223-4 packaging.
Q: Which substitute offers the lowest voltage dropout?
A: LD1117S50TR and all LM1117 variants (LM1117IMP-5.0/NOPB, LM1117IMPX-5.0/NOPB, LM1117MP-5.0/NOPB, LM1117MPX-5.0/NOPB) feature 1.2V dropout at 800mA, compared to 1.4V for the original AP1117E50L-13.
Q: Are there packaging format differences among substitutes?
A: Yes. STMicroelectronics LD1117 parts are available in Cut Tape (CT) and Digi-Reel formats. Texas Instruments LM1117 parts are supplied in Cut Tape. Analog Devices LT1117 parts are available in Tube or Tape & Reel (TR) formats. Verify packaging requirements for your procurement process.
Q: Which substitute has the lowest quiescent current?
A: Texas Instruments LM1117 variants (IMP, IMPX, MP, MPX) feature 5mA quiescent current, compared to 10mA for the AP1117E50L-13 and most other substitutes. This provides improved efficiency in low-power standby conditions.
Q: Do all substitutes include over-current protection?
A: LT1117 series parts (Analog Devices) include over-temperature protection only. All other substitutes (LD1117 and LM1117 series) include both over-current and over-temperature protection, matching the AP1117E50L-13 feature set.
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