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Microchip Technology MCP1727-2502E/SN
- Part No.:
- MCP1727-2502E/SN
- Manufacturer:
- Microchip Technology
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCP1727-2502E/SN.pdf
- Description:
- IC REG LINEAR 2.5V 1.5A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:248
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Product details
Overview
MCP1727-2502E/SN from Microchip Technology is a 1.5A fixed-output low-dropout (LDO) linear regulator delivering 2.5V with ±0.5% output voltage tolerance, 330 mV typical dropout at full load, and stable operation with only 1.0 µF ceramic output capacitance. It serves as a high-current, low-noise power rail for core logic in portable computing and networking subsystems.
For engineers reviewing the MCP1727-2502E/SN datasheet, MCP1727-2502E/SN pinout, MCP1727-2502E/SN application, or MCP1727-2502E/SN equivalent, key selection criteria include its 2.5V fixed output, SOIC-8 package compatibility, adjustable PWRGD delay via CDELAY pin, and thermal/short-circuit protection-critical for battery-powered and space-constrained designs.
Technical Context
The MCP1727-2502E/SN implements a PMOS pass transistor architecture enabling low dropout and fast transient response. Its internal reference and error amplifier maintain regulation across –40°C to +125°C junction temperature, with 92% VOUT threshold detection on the open-drain PWRGD output.
Shutdown control is active-low (SHDN), reducing quiescent current to 0.1 µA typical. The SENSE pin enables remote voltage sensing for improved load regulation, while CDELAY supports programmable power-good assertion delays from 200 µs to 300 ms using an external capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±0.5% - ensures precise core voltage for 2.5V I/O interfaces and memory rails |
| Max Output Current | 1.5A continuous - supports high-current digital loads such as FPGA I/O banks or ASIC cores |
| Dropout Voltage | 330 mV typical at 1.5A - enables operation down to VIN = 2.83V, critical for single-cell Li-ion or 3.3V rail derivation |
| Quiescent Current | 120 µA typical - minimizes standby power loss in always-on system management functions |
| PWRGD Threshold | 92% of VOUT (2.3V) with 2% hysteresis - provides reliable power sequencing without false resets during brown-out |
| Input Voltage Range | 2.3V to 6.0V - accommodates wide-input sources including USB, battery packs, and intermediate DC-DC stages |
| Thermal Shutdown | 150°C with 10°C hysteresis - protects against sustained overload or poor PCB thermal design |
Pinout & Package
Package: SOIC-8 (Small Outline Integrated Circuit, 150 mil width). Exposed pad not present - this variant uses standard SOIC thermomechanical construction without thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | VIN | Dual input supply pins - reduce trace inductance and IR drop for high-current paths |
| 3 | SHDN | Active-low enable - logic-low disables output and reduces IQ to 0.1 µA for system sleep modes |
| 4 | GND | Analog/digital ground reference - must connect to quiet ground plane to preserve PSRR and noise performance |
| 5 | PWRGD | Open-drain power-good flag - requires external pull-up; asserts when VOUT ≥ 2.3V (92% of 2.5V) |
| 6 | CDELAY | Capacitor-programmable delay node - sets PWRGD assertion time from 200 µs to 300 ms for custom reset timing |
| 7 | SENSE | Remote output voltage sense - improves load regulation by compensating for PCB trace resistance |
| 8 | VOUT | Regulated 2.5V output - requires ≥1.0 µF ceramic capacitor placed adjacent to pin for stability |
Key Features
| Feature | Design Value |
|---|---|
| Stable with 1.0 µF ceramic output cap | Reduces BOM count and board area vs. legacy LDOs requiring ≥10 µF tantalum |
| Adjustable PWRGD delay (200 µs–300 ms) | Enables precise coordination with microcontroller reset timers or FPGA configuration sequences |
| ±0.5% output voltage tolerance | Meets tight voltage margin requirements for 2.5V DDR memory and PCI Express I/O rails |
| 150°C thermal shutdown with hysteresis | Prevents latch-up during short-circuit faults while allowing safe recovery after cooling |
| SENSE pin for remote feedback | Compensates for up to 100 mΩ PCB trace resistance, maintaining <±1% regulation under dynamic load |
Applications
| Networking Backplane Power | Notebook CPU Core I/O Rail |
|---|---|
|
Use Scenario: Regulating 2.5V for Ethernet PHY transceivers and switch fabric interface ICs on high-density backplanes. IC Role / Device Role / Timing Role: Primary 2.5V LDO supplying power to multi-gigabit SerDes receivers and MAC controllers. Use Value: Low 330 mV dropout preserves headroom when powered from shared 3.3V intermediate bus; 1.5A rating handles burst traffic-induced current spikes. |
Use Scenario: Delivering clean, regulated 2.5V to CPU voltage identification (VID) circuits and chipset I/O buffers in ultraportable notebooks. IC Role / Device Role / Timing Role: Secondary LDO generating stable 2.5V from main 5V or 3.3V system rail, synchronized via PWRGD to CPU reset sequence. Use Value: 120 µA quiescent current extends battery life in suspend-to-RAM states; SENSE pin maintains regulation despite flex-cable voltage drop. |
| Industrial PLC Digital I/O Module | Medical Imaging Sensor Interface |
|
Use Scenario: Powering isolated 2.5V logic in programmable logic controller (PLC) digital input/output modules operating in harsh EMI environments. IC Role / Device Role / Timing Role: Local 2.5V regulator for optocoupler drivers and level-shifting buffers, enabled only during active scan cycles. Use Value: SHDN pin allows dynamic power gating to meet IEC 61000-4-4 surge immunity requirements; 60 dB PSRR at 100 Hz suppresses AC line noise coupling. |
Use Scenario: Supplying bias voltage to low-noise analog front-end (AFE) components in portable ultrasound or X-ray detector arrays. IC Role / Device Role / Timing Role: Low-noise 2.5V source for precision ADC references and op-amp signal conditioning stages. Use Value: 2.0 µV/√Hz output noise density and 1.0 µF ceramic stability ensure sub-LSB measurement accuracy; thermal shutdown prevents field failure during extended imaging sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS7A4700RGWR | 200 mA max output, ultra-low noise (4 µVRMS), adjustable only, 500 mV dropout at 150 mA | Targeted at precision analog rails-not suitable for 1.5A digital loads | Select only if noise performance outweighs current capability and fixed-voltage convenience |
| ON Semiconductor NCP1117ST25T3G | 1.0A max output, 1.2V dropout at 800 mA, no PWRGD or SHDN, TO-220/SOT-223 packages only | Lacks power sequencing features and thermal protection; limited to lower-current, non-portable systems | Consider only for cost-sensitive industrial controls where 1.5A headroom and advanced features are unnecessary |
Compared with TPS7A4700RGWR and NCP1117ST25T3G, the MCP1727-2502E/SN uniquely combines 1.5A delivery, 2.5V fixed output, integrated PWRGD with programmable delay, and SOIC-8 thermal performance-making it optimal for compact, high-reliability embedded systems requiring robust power sequencing.
Availability
MCP1727-2502E/SN is available at Aetrix Electronics and suitable for notebook computers, networking backplane cards, and industrial PLC modules requiring stable component supply with full lifecycle support and traceable sourcing.
Supply support for MCP1727-2502E/SN includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a leading provider of microcontrollers, analog devices, and power management ICs, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.
The MCP1727 product line delivers high-current, low-dropout linear regulators optimized for portable and space-constrained applications demanding precision voltage regulation, low quiescent current, and comprehensive fault protection.
FAQ
What is the maximum input voltage rating for the MCP1727-2502E/SN?
The MCP1727-2502E/SN has an absolute maximum input voltage rating of 6.5V, with recommended continuous operation between 2.3V and 6.0V. Exceeding 6.5V risks permanent damage per DS21999B-page 5 Absolute Maximum Ratings. The device's 330 mV dropout at 1.5A means minimum functional VIN is 2.83V for 2.5V output.
Does the MCP1727-2502E/SN require an external resistor divider to set its output voltage?
No. The MCP1727-2502E/SN is a fixed-output variant configured for 2.5V; it uses the SENSE pin (pin 7), not ADJ, and does not require external resistors. Only adjustable versions like MCP1727-ADJ need R1/R2 networks. This simplifies layout and eliminates resistor tolerance errors in the final 2.5V rail.
How is the power-good (PWRGD) delay time adjusted on the MCP1727-2502E/SN?
The PWRGD delay on the MCP1727-2502E/SN is set by connecting a capacitor from the CDELAY pin (pin 6) to ground. With no capacitor, delay is 200 µs typical; a 0.01 µF capacitor yields ~10–55 ms; and 0.1 µF extends it to 300 ms. This allows precise alignment with host processor reset timing requirements without firmware changes.
Can the MCP1727-2502E/SN operate without an output capacitor?
No. The MCP1727-2502E/SN requires a minimum 1.0 µF ceramic output capacitor for stability, as confirmed in DS21999B-page 1 and Section 4.3. Omitting it causes oscillation and output voltage collapse. X7R or X5R dielectrics are recommended; aluminum-electrolytic types must have ESR ≤1 Ω and are discouraged below –25°C.
What thermal performance can be expected from the MCP1727-2502E/SN in SOIC-8 package?
In SOIC-8 on a 4-layer JC51-7 board, the MCP1727-2502E/SN has a junction-to-ambient thermal resistance (θJA) of 150°C/W (DS21999B-page 7). At 1.5A and 330 mV dropout (0.495W dissipation), junction temperature rise is ~74°C above ambient-well within the –40°C to +125°C operating range if ambient stays ≤51°C.
MCP1727-2502E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.55V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 220 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (100Hz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MCP1727-2502E/SN FAQ
1.How can I place an order for MCP1727-2502E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1727-2502E/SN on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCP1727-2502E/SN reliable?
The price and inventory of MCP1727-2502E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1727-2502E/SN is usually 5 days.
3.What payment methods are accepted for MCP1727-2502E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1727-2502E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1727-2502E/SN?
MCP1727-2502E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1727-2502E/SN order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCP1727-2502E/SN?
For technical support, including MCP1727-2502E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1727-2502E/SN requirements.
6.How does Aetrix verify that MCP1727-2502E/SN is sourced from the original manufacturer or authorized distributors?
All MCP1727-2502E/SN products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCP1727-2502E/SN meets industry standards.
7.What is the process for return or replacement of MCP1727-2502E/SN?
All MCP1727-2502E/SN units undergo pre-shipment inspection (PSI). If there is an issue with MCP1727-2502E/SN, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCP1727-2502E/SN part is unused and in its original packaging.
Return procedure for MCP1727-2502E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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