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Microchip Technology MCP1825T-2502E/DC
- Part No.:
- MCP1825T-2502E/DC
- Manufacturer:
- Microchip Technology
- Package:
- SOT-223-6
- Datasheet:
-
MCP1825T-2502E/DC.pdf
- Description:
- IC REG LIN 2.5V 500MA SOT223-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,309
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Product details
Overview
MCP1825T-2502E/DC from Microchip Technology is a 500 mA, fixed 2.5 V output low-dropout (LDO) linear regulator in SOT-223-5 package with shutdown control and power-good indication. It operates from 2.1 V to 6.0 V input, delivers ±0.5% output voltage tolerance at 500 mA, and features 210 mV typical dropout voltage - enabling efficient sub-3 V rail regulation in portable computing and networking backplane applications.
For engineers reviewing the MCP1825T-2502E/DC datasheet, MCP1825T-2502E/DC pinout, MCP1825T-2502E/DC application, or MCP1825T-2502E/DC equivalent, key selection criteria include its 0.1 µA shutdown current, 110 µs PWRGD delay, stability with 1.0 µF ceramic output capacitor, and thermal protection for high-reliability embedded power management.
Technical Context
The MCP1825T-2502E/DC implements a PMOS pass transistor architecture with internal error amplifier, undervoltage lockout (UVLO), soft-start, and overtemperature shutdown at 150°C. Its fixed 2.5 V output is internally scaled and monitored for power-good assertion at 92% of regulation with 2% hysteresis.
It integrates short-circuit current limiting (1.2 A typical), fast load transient response, and CMOS-based quiescent current control - delivering 120 µA typical operating current and 0.1 µA shutdown current across –40°C to +125°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±0.5% - ensures stable core logic supply for 2.5 V I/O interfaces without external feedback components. |
| Max Output Current | 500 mA - supports high-current digital loads such as FPGA I/O banks or ASIC core rails in space-constrained designs. |
| Dropout Voltage | 210 mV typical at 500 mA - enables operation from 2.71 V input while maintaining 2.5 V output, critical for single-cell Li-ion or multi-cell alkaline systems. |
| Quiescent Current | 120 µA typical - minimizes standby power loss in always-on subsystems like real-time clocks or wake-up controllers. |
| Shutdown Current | 0.1 µA typical - reduces battery drain during deep-sleep modes in portable devices requiring multi-year shelf life. |
| Power-Good Delay | 110 µs typical rising-edge delay - provides deterministic system reset timing after power stabilization, compatible with microcontroller POR requirements. |
| Stability Capacitor | 1.0 µF ceramic - eliminates need for bulky tantalum or electrolytic capacitors, reducing PCB area and cost in compact layouts. |
Pinout & Package
SOT-223-5 surface-mount package with exposed thermal pad (GND-connected); 5-pin configuration optimized for thermal performance and board-level decoupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHDN) | Active-low shutdown control input | Pulls low to disable regulator output and reduce quiescent current to 0.1 µA; requires ≥45% VIN logic-high threshold for reliable enable. |
| 2 (VIN) | Unregulated input voltage supply | Accepts 2.1–6.0 V input; requires local 1–10 µF ceramic input capacitor when sourced from batteries or high-impedance supplies. |
| 3 (GND) | Ground reference and thermal pad connection | Internal ground node tied to exposed metal tab; must be soldered to large copper pour for thermal dissipation and noise reduction. |
| 4 (VOUT) | Regulated 2.5 V output | Delivers up to 500 mA with ±0.5% accuracy; requires ≥1.0 µF ceramic capacitor placed adjacent to pin for loop stability. |
| 5 (PWRGD) | Open-drain power-good status output | Asserts low until VOUT reaches 92% of 2.5 V (2.3 V), then rises after 110 µs delay; requires external pull-up resistor to system rail. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout voltage | 210 mV at full 500 mA load - enables high-efficiency regulation from marginal input sources like partially discharged batteries. |
| Ultra-low shutdown current | 0.1 µA typical - extends battery life in IoT edge nodes and wearables requiring long-duration sleep states. |
| Integrated power-good monitor | 110 µs fixed delay with 2% hysteresis - eliminates need for external supervisor IC in resource-constrained microcontroller systems. |
| Ceramic-capacitor stability | Stable with 1.0 µF X7R/X5R ceramic - reduces BOM count, improves reliability vs. electrolytics, and lowers ESR-related noise. |
| Thermal and short-circuit protection | 150°C junction shutdown with 10°C hysteresis and 1.2 A current limit - prevents catastrophic failure during sustained overload or ambient overheating. |
Applications
| High-Speed Driver Chipset Power | Notebook Computer Core Rails |
|---|---|
Use Scenario: Powering DDR memory interface buffers and PCIe SerDes drivers requiring clean, low-noise 2.5 V supply. IC Role / Device Role / Timing Role: Primary LDO regulator delivering regulated 2.5 V at up to 500 mA with fast transient response to handle burst-mode data traffic. Use Value: 2.0 µV/√Hz output noise and 60 dB PSRR at 100 Hz ensure signal integrity for high-speed digital links without additional filtering. |
Use Scenario: Supplying 2.5 V I/O rails for chipset southbridge and USB controller in ultra-thin notebook platforms. IC Role / Device Role / Timing Role: Fixed-output LDO providing stable voltage during dynamic CPU load transitions and battery voltage sag. Use Value: 210 mV dropout allows continuous operation down to 2.71 V input, extending usable battery capacity by >12% versus higher-dropout alternatives. |
| Networking Backplane Cards | Palmtop Computer System Rails |
Use Scenario: Generating 2.5 V auxiliary supply for Ethernet PHYs and packet buffer SRAM on enterprise switch line cards. IC Role / Device Role / Timing Role: Local point-of-load regulator with PWRGD signaling to coordinate FPGA configuration and link initialization sequences. Use Value: 110 µs PWRGD delay aligns precisely with FPGA startup timing windows, eliminating need for discrete RC timing circuits. |
Use Scenario: Regulating main system voltage for ARM-based palmtop processors and touch controller in handheld medical devices. IC Role / Device Role / Timing Role: Low-quiescent LDO supporting both active operation (120 µA) and deep-sleep mode (0.1 µA) under firmware control. Use Value: Sub-µA shutdown current enables multi-year battery life in battery-powered diagnostic tools with infrequent usage patterns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P252MR | 250 mA max output, no SHDN or PWRGD pins, SOT-23-3 package | Lacks power sequencing support; suitable only for simple, low-current bias rails without supervision | Select when board space is critical and system-level power sequencing is handled externally. |
| ON Semiconductor NCP1117ST25T3G | 800 mA output, 1.2 V dropout at 800 mA, no SHDN, TO-220/SOT-223-3 | Higher current but no enable or status signaling; requires larger input/output capacitance for stability | Choose for higher-current legacy designs where shutdown control and PWRGD are unnecessary. |
Compared with XC6206P252MR and NCP1117ST25T3G, the MCP1825T-2502E/DC uniquely combines 500 mA capability, integrated shutdown, and precise power-good timing in a thermally enhanced 5-pin SOT-223 - making it optimal for modern embedded systems requiring coordinated power sequencing and low standby consumption.
Availability
MCP1825T-2502E/DC is available at Aetrix Electronics and suitable for notebook computers, networking backplane cards, and palmtop computer system rails requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for MCP1825T-2502E/DC 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with a focus on reliability, longevity, and design-in support for industrial and automotive markets.
The MCP1825 series was designed specifically for high-current, low-voltage LDO applications in portable and networked electronics - emphasizing ultra-low quiescent current, ceramic-capacitor compatibility, and integrated power supervision.
FAQ
What is the maximum input voltage rating for the MCP1825T-2502E/DC?
The MCP1825T-2502E/DC has an absolute maximum input voltage rating of 6.5 V, with recommended continuous operating range of 2.1 V to 6.0 V. Exceeding 6.5 V risks permanent damage per DS22056B-page 7 Absolute Maximum Ratings. The device's UVLO circuit disables operation below 2.1 V to prevent unstable regulation.
Does the MCP1825T-2502E/DC require an external resistor divider for 2.5 V output?
No - the MCP1825T-2502E/DC is a fixed-output variant; its 2.5 V regulation is implemented internally and does not use the ADJ pin. The ADJ pin is absent in this part number; only the adjustable MCP1825-ADJ variants utilize external resistors. This simplifies layout and reduces BOM count.
How is thermal performance affected by the exposed pad on the MCP1825T-2502E/DC package?
The SOT-223-5 package of the MCP1825T-2502E/DC includes an exposed thermal pad electrically connected to GND. When soldered to ≥1 cm² of 2-oz copper with 4+ thermal vias, it reduces θJA from 62°C/W to ~45°C/W, enabling 500 mA operation at +85°C ambient without derating - critical for dense PCB layouts.
What is the minimum output capacitance required for stability with the MCP1825T-2502E/DC?
The MCP1825T-2502E/DC requires a minimum of 1.0 µF ceramic output capacitor (X7R or X5R dielectric) placed within 5 mm of the VOUT and GND pins. This value ensures phase margin >45° and prevents oscillation; larger values (up to 22 µF) improve PSRR and load transient response without compromising stability.
Can the MCP1825T-2502E/DC be used in automotive applications?
The MCP1825T-2502E/DC is qualified for industrial temperature range (–40°C to +125°C junction), but is not AEC-Q100 qualified. It has been deployed in non-safety-critical automotive infotainment and telematics modules where extended temperature operation and robust thermal protection are required - however, formal automotive qualification requires validation per customer-specific requirements.
MCP1825T-2502E/DC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-223-6
- Packaging:
- Tape & Reel (TR)
- 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):
- 0.35V @ 500mA
- Current - Output:
- 500mA
- 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:
- SOT-223-5
MCP1825T-2502E/DC FAQ
1.How can I place an order for MCP1825T-2502E/DC through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1825T-2502E/DC 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 MCP1825T-2502E/DC reliable?
The price and inventory of MCP1825T-2502E/DC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1825T-2502E/DC is usually 5 days.
3.What payment methods are accepted for MCP1825T-2502E/DC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1825T-2502E/DC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1825T-2502E/DC?
MCP1825T-2502E/DC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1825T-2502E/DC 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 MCP1825T-2502E/DC?
For technical support, including MCP1825T-2502E/DC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1825T-2502E/DC requirements.
6.How does Aetrix verify that MCP1825T-2502E/DC is sourced from the original manufacturer or authorized distributors?
All MCP1825T-2502E/DC 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 MCP1825T-2502E/DC meets industry standards.
7.What is the process for return or replacement of MCP1825T-2502E/DC?
All MCP1825T-2502E/DC units undergo pre-shipment inspection (PSI). If there is an issue with MCP1825T-2502E/DC, 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 MCP1825T-2502E/DC part is unused and in its original packaging.
Return procedure for MCP1825T-2502E/DC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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