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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6064 | $0.61 |
| 10+ | $0.5865 | $5.87 |
| 100+ | $0.5746 | $57.46 |
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