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Microchip Technology MCP1824T-0802E/DC
- Part No.:
- MCP1824T-0802E/DC
- Manufacturer:
- Microchip Technology
- Package:
- SOT-223-6
- Datasheet:
-
MCP1824T-0802E/DC.pdf
- Description:
- IC REG LIN 0.8V 300MA SOT223-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,120
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Product details
Overview
MCP1824T-0802E/DC from Microchip Technology is a 300 mA, fixed-output 0.8V low-dropout linear regulator in SOT-223-5 package, featuring 200 mV typical dropout at full load, ±0.5% output voltage tolerance, and integrated power-good (PWRGD) monitoring with 110 µs delay. It operates from 2.1V to 6.0V input and delivers stable sub-1V supply for core logic in portable computing and high-speed chipset applications.
For engineers reviewing the MCP1824T-08022E/DC datasheet, MCP1824T-0802E/DC pinout, MCP1824T-0802E/DC application, or MCP1824T-0802E/DC equivalent, key selection criteria include its 0.8V fixed output, shutdown control (SHDN), PWRGD assertion timing, ceramic-capacitor stability (≥1 µF), and thermal performance in SOT-223-5 with exposed pad.
Technical Context
The MCP1824T-0802E/DC implements a PMOS pass transistor architecture enabling ultra-low dropout and fast transient response. Its internal reference (0.41V on ADJ pin) is used only for adjustable variants; this fixed 0.8V version uses trimmed resistor feedback and monitors VOUT directly for PWRGD generation.
Power-good detection triggers when VOUT reaches 92% of nominal (0.736V), with 2% hysteresis and fixed 110 µs delay from regulation entry. Shutdown reduces quiescent current to 0.1 µA typical, and overtemperature protection activates at 150°C with 10°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 0.8V ±0.5% - enables direct powering of sub-1V processor cores without external resistors. |
| Max Output Current | 300 mA continuous - supports high-current digital loads such as DDR I/O or FPGA auxiliary rails. |
| Dropout Voltage | 200 mV typical at 300 mA - allows operation from 1.0V input (e.g., single LiFePO₄ cell or buck-boost pre-regulator). |
| Quiescent Current | 120 µA typical - minimizes battery drain in always-on system management functions. |
| PWRGD Delay | 110 µs typical rising-edge delay - provides deterministic power sequencing for downstream logic reset timing. |
| Stability Capacitor | 1.0 µF ceramic minimum - enables compact, low-ESR, high-reliability output filtering without tantalum or electrolytic parts. |
| Operating Temp | -40°C to +125°C junction - qualified for industrial and extended-temperature embedded systems. |
Pinout & Package
Package: 5-lead SOT-223-5 with exposed thermal pad (EP), rated θJA = 62°C/W on 4-layer board. Exposed pad must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHDN) | Active-low enable input | Pull to GND disables regulator and forces PWRGD low; logic-high threshold ≥45% VIN ensures noise immunity. |
| 2 (VIN) | Unregulated input supply | Accepts 2.1V–6.0V; requires local 1–10 µF ceramic decoupling near pin for PSRR and transient response. |
| 3 (GND) | Power ground reference | Low-impedance return path for LDO ground current; must connect to EP and output capacitor ground. |
| 4 (VOUT) | Regulated 0.8V output | Delivers up to 300 mA; requires ≥1 µF ceramic output capacitor placed adjacent to pin for stability. |
| 5 (PWRGD) | Open-drain power-good flag | Sinks ≥1.2 mA when active; requires external pull-up to compatible logic voltage (e.g., 1.8V or 3.3V). |
| EP (Exposed Pad) | Thermal and electrical ground | Internally connected to GND; must be soldered to large copper pour for thermal dissipation and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Sub-1V Fixed Output | 0.8V output eliminates need for external feedback resistors and simplifies layout for low-voltage SoC core supplies. |
| Integrated Power-Good | Dedicated open-drain PWRGD with 92% threshold and 110 µs delay enables reliable power sequencing without external comparators. |
| Ultra-Low Quiescent Current | 120 µA operating / 0.1 µA shutdown current extends battery life in portable and energy-sensitive applications. |
| Ceramic-Capacitor Stability | Stable with ≥1 µF X7R ceramic output capacitor - reduces BOM cost, size, and failure risk vs. tantalum alternatives. |
| Robust Protection | Short-circuit current limiting (720 mA typ.) and thermal shutdown (150°C) prevent damage during fault conditions. |
Applications
| Mobile Processor Core Supply | DDR Memory I/O Rail |
|---|---|
Use Scenario: Powering ARM Cortex-A series CPU cores requiring tightly regulated 0.8V at up to 300 mA in tablet or handheld designs. IC Role / Device Role / Timing Role: Primary core voltage regulator with PWRGD signaling to SoC reset controller for deterministic boot sequence. Use Value: Enables direct 0.8V generation from 1.0–1.2V intermediate bus, eliminating cascaded regulation loss and improving efficiency by >5% vs. two-stage solutions. | Use Scenario: Supplying DDR3/DDR4 memory I/O banks where tight voltage tolerance and fast load transient response are critical. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth LDO delivering stable 0.8V to memory interface; PWRGD synchronizes memory initialization after power ramp. Use Value: 2.0 µV/√Hz output noise and 55 dB PSRR at 100 Hz ensure signal integrity for high-speed data eye margins. |
| FPGA Auxiliary Rail | Industrial Sensor Node MCU Supply |
Use Scenario: Providing clean 0.8V bias to FPGA configuration logic or transceiver analog blocks in reconfigurable systems. IC Role / Device Role / Timing Role: Secondary regulated rail with independent SHDN control for power domain isolation during partial reconfiguration. Use Value: 0.1 µA shutdown current allows complete rail disablement during FPGA sleep modes, reducing system standby power by >10 µW. | Use Scenario: Powering ultra-low-power microcontrollers (e.g., PIC18LF, SAM L21) in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Primary system regulator with PWRGD used to wake MCU from deep-sleep upon valid rail establishment. Use Value: -40°C to +125°C operation and 120 µA quiescent current support 10+ year battery life in unheated outdoor deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1824T-0802E/MB | SOT-23-5 package (smaller footprint, higher θJA = 256°C/W); identical electrical specs. | Preferred for space-constrained PCBs where thermal budget permits higher junction rise. | Select when board area is critical and peak load duration is short or ambient temperature is low. |
| TPS7A0508PDBVR | Texas Instruments part; 0.8V fixed, 200 mA max, 170 mV dropout, no PWRGD, 25 µA IQ. | Lacks power-good signaling and 100 mA lower current capability; suited for simpler, lower-power systems. | Choose only if PWRGD is unnecessary and load current remains ≤200 mA; verify thermal margin due to different package. |
Compared with MCP1824T-0802E/MB and TPS7A0508PDBVR, the MCP1824T-0802E/DC offers superior thermal performance in SOT-223-5, guaranteed 300 mA delivery, and integrated PWRGD-making it optimal for thermally demanding, sequenced-power applications where reliability and timing control are essential.
Availability
MCP1824T-0802E/DC is available at Aetrix Electronics and suitable for mobile computing, DDR memory subsystems, FPGA power domains, and industrial sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCP1824T-0802E/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 Inc. is a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.
The MCP1824 product line delivers high-current, low-voltage LDO regulators optimized for portable and embedded systems requiring precision, low quiescent current, and integrated power sequencing features like PWRGD and SHDN.
FAQ
What is the exact output voltage tolerance of the MCP1824T-0802E/DC?
The MCP1824T-0802E/DC has a fixed output voltage of 0.8V with a tolerance of ±0.5% over temperature and line/load conditions, meaning the actual output remains within 0.796V to 0.804V under specified operating conditions. This tight tolerance is achieved via factory-trimmed internal feedback and is confirmed in the DS22070A datasheet Section 1.0 Electrical Characteristics.
Does the MCP1824T-0802E/DC require an external resistor network to set its output voltage?
No, the MCP1824T-0802E/DC is a fixed-output variant and does not require external resistors. Its 0.8V output is internally set and trimmed; the ADJ pin is not present or functional in this version. Only adjustable versions (e.g., MCP1824T-ADJE/DC) use the ADJ pin and external resistor divider.
Can the MCP1824T-0802E/DC operate with a 1.0V input supply?
Yes - the MCP1824T-0802E/DC can operate with a 1.0V input, but only if the output is unloaded or lightly loaded. Its minimum input voltage is defined as VIN ≥ VOUT + VDROPOUT(MAX). At 300 mA, VDROPOUT(MAX) = 320 mV, so VIN(MIN) = 1.12V. At 10 mA, dropout drops to ~50 mV, allowing 0.85V input. Always verify dropout vs. load per Figure 2-19 in DS22070A.
What is the purpose of the exposed pad (EP) on the MCP1824T-0802E/DC package?
The exposed pad on the MCP1824T-0802E/DC's SOT-223-5 package is electrically connected to GND and serves as the primary thermal conduction path. It must be soldered to a PCB ground plane to achieve the specified θJA = 62°C/W and prevent thermal shutdown under sustained 300 mA load. Leaving it floating degrades thermal performance and risks instability.
How does the PWRGD output behave during shutdown of the MCP1824T-0802E/DC?
When SHDN is pulled low, the MCP1824T-0802E/DC disables its output and drives PWRGD low (≤0.4V at 1.2 mA sink) within 100 µs. PWRGD remains asserted low until SHDN is returned high and VOUT rises to ≥92% of 0.8V (≥0.736V), after which the 110 µs internal delay begins before PWRGD goes high. This behavior is documented in Sections 3.5 and 2.10 of DS22070A.
MCP1824T-0802E/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):
- 0.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.32V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 220 µA
- Current - Supply (Max):
- -
- PSRR:
- 55dB (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
MCP1824T-0802E/DC FAQ
1.How can I place an order for MCP1824T-0802E/DC through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1824T-0802E/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 MCP1824T-0802E/DC reliable?
The price and inventory of MCP1824T-0802E/DC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1824T-0802E/DC is usually 5 days.
3.What payment methods are accepted for MCP1824T-0802E/DC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1824T-0802E/DC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1824T-0802E/DC?
MCP1824T-0802E/DC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1824T-0802E/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 MCP1824T-0802E/DC?
For technical support, including MCP1824T-0802E/DC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1824T-0802E/DC requirements.
6.How does Aetrix verify that MCP1824T-0802E/DC is sourced from the original manufacturer or authorized distributors?
All MCP1824T-0802E/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 MCP1824T-0802E/DC meets industry standards.
7.What is the process for return or replacement of MCP1824T-0802E/DC?
All MCP1824T-0802E/DC units undergo pre-shipment inspection (PSI). If there is an issue with MCP1824T-0802E/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 MCP1824T-0802E/DC part is unused and in its original packaging.
Return procedure for MCP1824T-0802E/DC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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