MCP1727-ADJE/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP1727-ADJE/SN is an adjustable low-dropout regulator delivering 1.5 A output from 0.8 V to 5 V in an SOIC-8 package. Features 300 mV typical dropout voltage and 1% load regulation for precise power delivery. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP1727-ADJE/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5746(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1727-ADJE/SN?
- 1.5 A output current with 300 mV typical dropout voltage for high-efficiency linear regulation
- Adjustable output voltage from 0.8 V to 5 V set by two external resistors for design flexibility
- 1% maximum load regulation across full current range ensuring stable voltage in sensitive analog circuits
- SOIC-8 package with enable pin simplifying power sequencing and shutdown control in multi-rail systems
What is MCP1727-ADJE/SN used for?
The MCP1727-ADJE/SN is suited for point-of-load linear regulation in embedded systems, FPGAs, and DSP boards where a clean, low-noise supply rail is required downstream of a switching pre-regulator. Its adjustable output from 0.8 V to 5 V and 1.5 A current capability make it a versatile choice for powering ARM Cortex-M cores, DDR memory, and RF front-end modules from a single 5 V or 3.3 V bus. Industrial sensor transmitters and portable test equipment also rely on its tight load regulation to keep analog measurement accuracy within specification across varying load conditions.
What are the specifications of MCP1727-ADJE/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Adjustability | FIXED/ADJUSTABLE |
| Dropout Voltage1-Max | 0.55V |
| Dropout Voltage1-Nom | 0.3V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| 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 | 1.5A |
| 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 |
| Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR |
| 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 | Mainland China, Thailand |
Where can I find the MCP1727-ADJE/SN datasheet?
MCP1727-ADJE/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1727-ADJE/SN?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the typical dropout voltage of MCP1727-ADJE/SN at full 1.5 A load, and how does it affect input voltage selection?
The MCP1727-ADJE/SN exhibits a typical dropout voltage of 300 mV and a maximum of 550 mV at 1.5 A output current. To maintain regulation at a 3.3 V output, the input supply must stay at or above 3.85 V worst-case, meaning a 5 V input rail provides ample headroom. This low dropout characteristic allows the device to extract nearly all usable energy from a lithium-ion cell as it discharges toward its 3.5 V cutoff.
How is the output voltage of MCP1727-ADJE/SN set, and what resistor values are typically used for a 1.8 V rail?
The MCP1727-ADJE/SN output voltage is programmed using two external resistors (R1 from VOUT to the feedback pin, and R2 from the feedback pin to ground), where VOUT = 0.41 V × (1 + R1/R2). To set 1.8 V, a typical combination is R2 = 100 kΩ and R1 approximately 339 kΩ using standard E96 values. The 0.41 V internal reference enables output voltages as low as 0.8 V, suitable for sub-1 V core supplies in modern SoCs.
Can MCP1727-ADJE/SN be used in a low-noise analog power supply for an audio codec, and what output capacitor is recommended?
Yes. The MCP1727-ADJE/SN is well-suited for analog audio supply rails because its LDO architecture introduces far less switching noise than a buck converter. Microchip recommends a 10 µF ceramic output capacitor with an ESR below 1 Ω for stable operation; adding a 1 µF film capacitor in parallel reduces high-frequency noise below 100 kHz, which is critical for maintaining audio SNR above 90 dB in DAC and ADC supply designs.
How does the enable pin on MCP1727-ADJE/SN support power sequencing in a multi-rail FPGA system?
The active-high enable pin on the MCP1727-ADJE/SN can be driven directly from a GPIO, a supervisory IC, or a sequencer output to control when the 1.5 A output activates. In a typical Xilinx FPGA power-up sequence, the 1.0 V core rail must precede the 1.8 V I/O rail by at least 1 ms; the enable pin allows precise sequencing without discrete transistor switches, simplifying the BOM and ensuring the FPGA never experiences a reverse-biased supply condition during startup.
What is the maximum continuous output current of MCP1727-ADJE/SN, and which thermal package consideration applies in a 25°C ambient environment?
The MCP1727-ADJE/SN is rated for a continuous output current of 1.5 A. In the SOIC-8 package with a thermal resistance of approximately 125 °C/W (junction-to-ambient), dissipating 1 W (e.g., 1.5 A × 0.67 V dropout) raises junction temperature by about 125 °C above ambient. At 25 °C ambient this gives a junction of 150 °C, which is at the absolute maximum limit, so applications demanding sustained 1.5 A should use a PCB copper pour or a heatsink to keep junction temperature below 125 °C for reliable long-term operation.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6064 | $0.61 |
| 10+ | $0.5865 | $5.87 |
| 100+ | $0.5746 | $57.46 |
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