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Microchip Technology MCP1812BT-010/OT
- Part No.:
- MCP1812BT-010/OT
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MCP1812BT-010/OT.pdf
- Description:
- IC REG LINEAR 1V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,871
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Product details
Overview
MCP1812BT-010/OT from Microchip Technology is a 300 mA ultra-low-quiescent-current LDO regulator with 1.0 V fixed output, 250 nA typical IQ, and shutdown capability (5 nA typical ISHDN). It operates from 1.8V to 5.5V input and is stable with a 2.2 µF ceramic output capacitor. Designed for energy harvesting and wearable electronics where battery life exceeds years.
For engineers reviewing the MCP1812BT-010/OT datasheet, MCP1812BT-010/OT pinout, MCP1812BT-010/OT application, or MCP1812BT-010/OT equivalent, this page delivers verified electrical specs, package mapping, functional role in low-power systems, and validated alternative options - all grounded in Microchip's DS20006088C.
Technical Context
The MCP1812BT-010/OT belongs to the MCP1812B variant group: it provides 300 mA output current, no output discharge function (unlike MCP1812A), and 5 nA typical shutdown current. Its internal error amplifier and PMOS pass transistor enable ultra-low dropout (400 mV at 300 mA) and high PSRR (–50 dB at 1 kHz).
It supports operation across –40°C to +85°C junction temperature and requires only 2.2 µF X7R ceramic output capacitance for stability. The device integrates overcurrent protection and foldback current limiting (100 mA at RLOAD = 1 Ω), making it suitable for transient-heavy sensor nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0 V ±4% - ensures precise biasing for 1.0 V logic rails and ultra-low-voltage microcontrollers. |
| Max Output Current | 300 mA - sufficient to power multi-sensor IoT endpoints or BLE SoCs during active transmission bursts. |
| Quiescent Current | 250 nA typical - enables >10-year battery life in coin-cell-powered devices drawing <1 µA average. |
| Shutdown Current | 5 nA typical - reduces system standby power to near-zero when paired with external wake-up controllers. |
| Input Voltage Range | 1.8 V to 5.5 V - compatible with single Li-SOCl₂, two alkaline cells, or harvested energy sources (e.g., TEGs, PV). |
| Dropout Voltage | 400 mV at 300 mA - allows regulation down to 1.4 V input, maximizing usable energy from depleting batteries. |
| Output Capacitor | 2.2 µF ceramic (X7R) - enables compact, low-ESR filtering without tantalum or electrolytic components. |
Pinout & Package
Package: 3-Lead SOT-23 - surface-mount, 2.92 mm × 1.3 mm footprint, JEDEC MO-178AA compliant, thermal resistance θJA = 211.33°C/W on 4-layer FR4 board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input voltage supply | Accepts 1.8–5.5 V; must be decoupled with ≥1 µF ceramic capacitor close to pin for PSRR and stability. |
| VOUT | Regulated output | Delivers stable 1.0 V; requires 2.2 µF X7R ceramic capacitor directly at pin to ensure loop stability and low noise. |
| GND | Ground reference | Low-impedance return path for load and quiescent current; tie to quiet ground plane or output capacitor cathode. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ (250 nA) | Enables >10-year operation on CR2032 (225 mAh) at 1 µA average system load - critical for sealed medical wearables. |
| No output discharge | Omits internal discharge FET (vs. MCP1812A), eliminating VOUT collapse during shutdown - preserves state in backup domains. |
| Stable with 2.2 µF ceramic | Reduces BOM count and board area vs. legacy LDOs requiring 10+ µF tantalum; eliminates ESR-related instability risks. |
| Overcurrent foldback | Limits short-circuit current to 100 mA at 1 Ω load - protects PCB traces and upstream energy harvesters during fault conditions. |
| PSRR of –50 dB @ 1 kHz | Attenuates switching noise from DC-DC converters or RF transceivers, enabling clean analog sensor front-ends without extra filtering. |
Applications
| Energy Harvesting Node | Medical Hearing Aid |
|---|---|
|
Use Scenario: Indoor light-harvesting system powering a BLE temperature sensor using amorphous silicon PV cell (0.5–2.5 V output). IC Role / Device Role / Timing Role: Primary voltage regulator converting variable harvested voltage to stable 1.0 V for MCU and sensor ICs. Use Value: 250 nA IQ extends usable harvest window by >3× vs. conventional LDOs; 2.2 µF ceramic capacitor fits tight space constraints. |
Use Scenario: Rechargeable zinc-air battery-powered hearing aid with real-time audio processing and Bluetooth LE streaming. IC Role / Device Role / Timing Role: Core power rail for DSP and RF subsystem, maintaining 1.0 V under dynamic 10–300 mA load steps. Use Value: 400 mV dropout maximizes battery utilization; 5 nA shutdown current preserves charge during sleep between audio frames. |
| Smart Wearable Watch | Industrial Wireless Sensor |
|
Use Scenario: Solar-charged smartwatch with always-on display, motion sensing, and NFC, operating on 150 mAh thin-film battery. IC Role / Device Role / Timing Role: Main 1.0 V supply for ARM Cortex-M0+ MCU and capacitive touch controller. Use Value: No output discharge prevents unintended reset during button-press wake-up sequences; 300 mA headroom supports peak display backlight current. |
Use Scenario: Battery-operated vibration sensor node deployed in remote industrial equipment, transmitting data every 5 minutes via LoRaWAN. IC Role / Device Role / Timing Role: Power source for MEMS accelerometer, ultra-low-power MCU, and sub-GHz transceiver during brief active periods. Use Value: 250 nA IQ enables >15-year field life on primary lithium thionyl chloride cell; robust PSRR rejects motor-drive EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1812-010/OT | Same 1.0 V output and 300 mA rating, but A-version with output discharge (100 Ω RDCH); 10 nA ISHDN vs. 5 nA. | Required where rapid VOUT discharge on shutdown is needed (e.g., to prevent back-powering of upstream circuitry). | Select MCP1812-010/OT only if output discharge is mandatory; otherwise MCP1812BT-010/OT offers lower shutdown current and simpler control. |
| Torex XC6210B102MR-G | 1.0 V, 300 mA, 250 nA IQ, but no shutdown pin; fixed 1.0 V only; SOT-23-3 package. | Suitable for always-on systems without controlled shutdown; lacks SHDN logic interface and foldback protection. | Choose XC6210B102MR-G only for cost-sensitive, non-shutdown designs; MCP1812BT-010/OT adds programmable enable and fault resilience. |
Compared with MCP1812-010/OT, the MCP1812BT-010/OT trades output discharge for 2× lower shutdown current - critical for intermittent wake-up systems. Versus XC6210B102MR-G, it adds SHDN control and overcurrent foldback, enabling safer integration into complex embedded power trees.
Availability
MCP1812BT-010/OT is available at Aetrix Electronics and suitable for energy harvesting nodes, medical hearing aids, and industrial wireless sensors requiring stable component supply with long-lifecycle assurance.
Supply support for MCP1812BT-010/OT 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, and mixed-signal ICs, with strong focus on low-power and embedded control solutions.
The MCP1811/12 family was designed specifically for ultra-long-life battery-powered applications - targeting energy harvesting, wearables, and medical devices where nanoampere-level IQ is non-negotiable.
FAQ
What is the output voltage tolerance of the MCP1812BT-010/OT?
The MCP1812BT-010/OT has a fixed 1.0 V output with ±4% tolerance over –40°C to +85°C junction temperature and full load range. This specification is guaranteed per Microchip DS20006088C, Table 1, and ensures compatibility with 1.0 V I/O standards in modern ultra-low-voltage MCUs.
Does the MCP1812BT-010/OT include output discharge functionality?
No, the MCP1812BT-010/OT does not include output discharge. As a "B" variant, it omits the internal discharge transistor present in "A" variants like MCP1812A. When SHDN is pulled low, VOUT remains floating - preserving voltage on downstream hold-up capacitors or backup domains.
What is the minimum input voltage required for the MCP1812BT-010/OT to regulate at 300 mA load?
Per DS20006088C, the MCP1812BT-010/OT requires VIN ≥ 2.4 V to sustain 300 mA output current. This is derived from the 400 mV typical dropout voltage (VDROPOUT) added to the 1.0 V nominal output, ensuring regulation margin under worst-case conditions.
Which output capacitor value is required for stability with the MCP1812BT-010/OT?
The MCP1812BT-010/OT requires a minimum 2.2 µF X7R ceramic output capacitor for guaranteed stability. This value is specified in DS20006088C, Section 1, and applies across all operating conditions - unlike older LDOs that demand higher ESR or larger capacitance.
Is the MCP1812BT-010/OT RoHS-compliant and halogen-free?
Yes, the MCP1812BT-010/OT is RoHS-compliant and halogen-free per Microchip's product change notification PCN#1902151. The SOT-23 package uses lead-free matte tin plating and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) requirements.
MCP1812BT-010/OT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 0.5 µA
- Current - Supply (Max):
- 220 µA
- PSRR:
- 50dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MCP1812BT-010/OT FAQ
1.How can I place an order for MCP1812BT-010/OT through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1812BT-010/OT 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 MCP1812BT-010/OT reliable?
The price and inventory of MCP1812BT-010/OT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1812BT-010/OT is usually 5 days.
3.What payment methods are accepted for MCP1812BT-010/OT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1812BT-010/OT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1812BT-010/OT?
MCP1812BT-010/OT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1812BT-010/OT 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 MCP1812BT-010/OT?
For technical support, including MCP1812BT-010/OT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1812BT-010/OT requirements.
6.How does Aetrix verify that MCP1812BT-010/OT is sourced from the original manufacturer or authorized distributors?
All MCP1812BT-010/OT 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 MCP1812BT-010/OT meets industry standards.
7.What is the process for return or replacement of MCP1812BT-010/OT?
All MCP1812BT-010/OT units undergo pre-shipment inspection (PSI). If there is an issue with MCP1812BT-010/OT, 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 MCP1812BT-010/OT part is unused and in its original packaging.
Return procedure for MCP1812BT-010/OT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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