MCP1725-ADJE/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP1725-ADJE/SN is an adjustable low-dropout linear regulator with 210 mV typical dropout voltage, 0.35 V maximum dropout, and 0.16%/V line regulation in a RoHS-compliant 8-pin SOIC package. From $1 in stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP1725-ADJE/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1660(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1725-ADJE/SN?
- Adjustable output voltage LDO with 210 mV typical dropout voltage and 350 mV maximum, enabling efficient regulation from low-voltage power sources such as Li-ion batteries
- Excellent line regulation of 0.16%/V maximum ensures stable output voltage across varying input supply conditions, critical for noise-sensitive analog and RF circuits
- RoHS-compliant 8-pin SOIC-8 package with standard SMD footprint, providing design flexibility for a wide range of output voltages set by external resistor divider
What is MCP1725-ADJE/SN used for?
The MCP1725-ADJE/SN is used in portable electronics, IoT sensor nodes, and embedded system power rails where an adjustable, low-dropout voltage regulator is needed to supply custom output voltages between approximately 0.8 V and 3.6 V. Its 210 mV typical dropout voltage allows efficient operation from single-cell Li-ion batteries as they discharge, maximizing usable energy. The tight line regulation of 0.16%/V makes it suitable for powering precision ADCs, reference circuits, and RF front-ends that are sensitive to supply noise.
What are the specifications of MCP1725-ADJE/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Adjustability | ADJUSTABLE |
| Dropout Voltage1-Max | 0.35V |
| Dropout Voltage1-Nom | 0.21V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Line Regulation-Max (%/V) | 0.16 |
| Load Regulation-Max(%) | 1% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.5A |
| Output Voltage1-Max | 5V |
| Output Voltage1-Min | 0.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the MCP1725-ADJE/SN datasheet?
MCP1725-ADJE/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1725-ADJE/SN?
Compatible alternatives and drop-in replacements for MCP1725-ADJE/SN:
Frequently Asked Questions
How is the output voltage of the MCP1725-ADJE/SN set, and what resistor values are needed for a 1.8 V output?
The MCP1725-ADJE/SN output voltage is set by an external resistor divider connected between the output and the feedback pin, following the formula Vout = Vref × (1 + R1/R2) where Vref is typically 0.41 V. For a 1.8 V output, with R2 = 100 kΩ, R1 calculates to approximately 339 kΩ, or a standard 330 kΩ value for a nominal output near 1.75 V, suitable for supplying digital logic cores in low-power microcontrollers.
At what minimum input voltage does the MCP1725-ADJE/SN maintain regulation when set to a 3.3 V output?
With a 3.3 V output setting, the MCP1725-ADJE/SN requires a minimum input voltage of 3.3 V plus the maximum dropout voltage of 0.35 V, totaling at least 3.65 V at the input to remain in regulation. This means a fully charged 4.2 V Li-ion cell provides comfortable headroom, but the regulator will drop out of regulation as the battery discharges below 3.65 V, reducing usable capacity for 3.3 V loads.
How does the MCP1725-ADJE/SN's line regulation compare to discrete LDO designs using a pass transistor and error amplifier?
The MCP1725-ADJE/SN achieves a guaranteed line regulation of 0.16%/V maximum, which means a 1 V change in input voltage shifts the output by no more than 1.6 mV on a 1 V output rail. Discrete LDO designs using standard jellybean transistors typically achieve 0.3%/V to 1%/V line regulation depending on open-loop gain, so the integrated MCP1725 offers a 2x to 6x improvement in line regulation with far fewer components.
Is the MCP1725-ADJE/SN suitable for powering a 500 mA load, and what thermal derating applies in the SOIC-8 package?
The MCP1725-ADJE/SN supports output currents up to 500 mA, but thermal derating in the SOIC-8 package limits continuous dissipation to approximately 700 mW at 25°C ambient without a heatsink. At a 1 V input-to-output differential with 500 mA load, power dissipation is 500 mW, which is within limits at room temperature but requires careful PCB copper area design or airflow to stay within the 125°C junction temperature limit at elevated ambient temperatures above 70°C.
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| Qty. | Unit Price | Ext. Price |
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| 1+ | $0.1679 | $0.17 |
| 25+ | $0.1667 | $4.17 |
| 100+ | $0.1660 | $16.60 |
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