My Inquiry
My Account
Microchip Technology MCP1812BT-020/LB
- Part No.:
- MCP1812BT-020/LB
- Manufacturer:
- Microchip Technology
- Package:
- SC-70, SOT-323
- Datasheet:
-
MCP1812BT-020/LB.pdf
- Description:
- IC REG LINEAR 2V 300MA SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,330
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MCP1812BT-020/LB from Microchip Technology is a 300 mA ultra-low-quiescent-current LDO regulator with 2.0 V fixed output, 250 nA typical IQ, and shutdown capability (5 nA typical ISHDN). It operates from 1.8V to 5.5V input and supports ceramic output capacitors as low as 2.2 µF. Designed for energy harvesting and long-life battery-powered systems like hearing aids and smart wearables.
For engineers reviewing the MCP1812BT-020/LB datasheet, MCP1812BT-020/LB pinout, MCP1812BT-020/LB application, or MCP1812BT-020/LB equivalent, this page delivers verified electrical specs, package mapping, functional role in ultra-low-power domains, and validated alternative options - all grounded in Microchip's DS20006088C.
Technical Context
The MCP1812BT-020/LB implements a low-dropout linear regulation architecture with integrated overcurrent protection and a dedicated SHDN control terminal. Its internal error amplifier maintains ±4% output voltage accuracy across –40°C to +85°C junction temperature while sustaining 250 nA quiescent current during active operation.
It features an output discharge transistor (RDCH ≈ 100 Ω) active only in MCP1812A variants - confirmed absent in MCP1812B series including MCP1812BT-020/LB - and delivers 300 mA continuous output with 400–600 mV dropout at full load. Input voltage range is dynamically constrained by load: ≥2.4 V required for 300 mA operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.0 V ±4% - ensures stable bias for 2.0 V logic rails and low-voltage microcontrollers without external feedback. |
| Max Output Current | 300 mA - supports higher-current peripherals (e.g., BLE radios, sensors) in compact battery-powered designs. |
| Quiescent Current | 250 nA typical - enables multi-year operation on coin cells (e.g., CR2032) in sleep-dominated duty cycles. |
| Shutdown Current | 5 nA typical - reduces system standby power to near-zero when host MCU asserts SHDN = GND. |
| Input Voltage Range | 1.8 V to 5.5 V - compatible with single-cell Li-ion, LiFePO₄, alkaline, and energy-harvesting sources. |
| Dropout Voltage | 400–600 mV at 300 mA - allows regulation down to ~2.4 V input, maximizing usable battery capacity. |
| Stability Capacitor | 2.2 µF ceramic (X7R) - enables small-footprint, low-ESR, low-noise filtering without tantalum or electrolytic parts. |
Pinout & Package
Package: 3-Lead SOT-23 (TO-236), JEDEC standard footprint with thermal performance θJA = 211.33°C/W on 4-layer FR4 board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | 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 2.0 V ±4%; requires ≥2.2 µF X7R ceramic capacitor to ground for loop stability and noise suppression. |
| GND | Ground reference | Low-impedance return path for regulator core and load; tie directly to output capacitor ground for optimal PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ operation | 250 nA typical enables >10-year battery life in devices drawing <1 µA average current. |
| Sub-10 nA shutdown mode | 5 nA ISHDN minimizes leakage during deep-sleep states, critical for energy-harvesting storage buffers. |
| Ceramic-capacitor stability | 2.2 µF minimum COUT eliminates need for larger, less reliable electrolytics - reducing BOM cost and board area. |
| Wide input voltage range | 1.8–5.5 V operation supports direct connection to harvested sources (e.g., solar, RF, thermal) without pre-regulation. |
| Overcurrent protection | Foldback current limiting (100 mA at RLOAD = 1 Ω) prevents thermal runaway during short-circuit events. |
Applications
| Energy Harvesting Node | Wearable Medical Sensor |
|---|---|
|
Use Scenario: Indoor light-harvesting circuit powering a BLE temperature sensor node with intermittent transmission. IC Role / Device Role / Timing Role: Primary voltage regulator supplying 2.0 V to ultra-low-power MCU and radio transceiver during burst-mode operation. Use Value: 250 nA IQ extends usable runtime per µJ of harvested energy; 300 mA peak supports radio transmit bursts without brownout. |
Use Scenario: Miniaturized hearing aid with rechargeable micro-LiPo battery and real-time audio processing ASIC. IC Role / Device Role / Timing Role: Main power rail regulator delivering clean, stable 2.0 V to analog front-end and DSP core. Use Value: 2.2 µF ceramic stability eliminates audible switching noise; 5 nA shutdown preserves charge during device-off periods. |
| Smart Card Reader | Long-Life IoT Tracker |
|
Use Scenario: Contactless smart card reader powered by USB or coin cell, requiring secure, low-noise 2.0 V for cryptographic IC. IC Role / Device Role / Timing Role: Low-noise LDO providing regulated supply to security controller and NFC interface. Use Value: ±4% output tolerance meets ISO/IEC 7816-3 voltage compliance; high PSRR (>50 dB @ 1 kHz) rejects USB ripple. |
Use Scenario: Asset tracker deployed in remote locations, reporting GPS position every 24 hours using primary alkaline AA cells. IC Role / Device Role / Timing Role: System power manager enabling MCU and GPS module to operate only during scheduled wake windows. Use Value: 5 nA shutdown current extends shelf life beyond 5 years; 2.4 V min VIN threshold maximizes usable battery voltage range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1812-020/DB | Same 2.0 V output, 300 mA rating, and 5 nA shutdown, but in 5-Lead SOT-23 package with SHDN and NC pins - adds pin count and layout complexity. | Requires PCB redesign due to 5-pin footprint and different thermal pad configuration; no functional advantage over 3-pin SOT-23. | Select only if existing design uses 5-lead variant or requires separate NC pin for future routing flexibility. |
| Torex XC6210B202MR-G | 2.0 V fixed output, 300 mA, 250 nA IQ, but lacks shutdown control and offers only 1.0 µF ceramic stability - lower integration. | Suitable for always-on applications; not viable where host-controlled power gating is required (e.g., MCU-driven sleep). | Choose when shutdown functionality is unnecessary and board space permits slightly larger output cap footprint. |
Compared with MCP1812-020/DB, MCP1812BT-020/LB saves board area and simplifies layout via 3-pin SOT-23; versus XC6210B202MR-G, it adds essential SHDN control for dynamic power management in duty-cycled systems.
Availability
MCP1812BT-020/LB is available at Aetrix Electronics and suitable for energy harvesting nodes, wearable medical sensors, and long-life IoT trackers requiring stable component supply with guaranteed longevity and traceable sourcing.
Supply support for MCP1812BT-020/LB 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 global semiconductor company specializing in microcontrollers, analog, and mixed-signal solutions, with emphasis on reliability, low-power design, and embedded control.
The MCP1811/12 family targets ultra-low-power battery and energy-harvesting applications - engineered to minimize system-level quiescent consumption while delivering robust regulation under variable load and input conditions.
FAQ
What is the output voltage tolerance of the MCP1812BT-020/LB?
The MCP1812BT-020/LB provides a fixed 2.0 V output with ±4% tolerance over –40°C to +85°C junction temperature and full load range. This specification ensures compatibility with 2.0 V I/O standards and low-voltage logic without requiring external trimming or calibration.
Does the MCP1812BT-020/LB include output discharge during shutdown?
No, the MCP1812BT-020/LB is an MCP1812B-series device and does not include the output discharge transistor (DT). Only MCP1812A variants feature RDCH ≈ 100 Ω for active VOUT pull-down during SHDN assertion. This distinction is confirmed in Table 1 of DS20006088C.
What is the minimum input voltage required for 300 mA output from the MCP1812BT-020/LB?
The MCP1812BT-020/LB requires a minimum input voltage of 2.4 V to sustain 300 mA output current, as specified in the "Input Operating Voltage" table (DS20006088C, page 4). Below this, current capability degrades progressively due to dropout limitations.
Can the MCP1812BT-020/LB operate with a 1.0 µF output capacitor?
No - the MCP1812BT-020/LB requires a minimum 2.2 µF ceramic (X7R) output capacitor for stability, per the "Stable with Ceramic Output Capacitor" specification. Using 1.0 µF (valid for MCP1811X) risks oscillation and degraded transient response.
What package type is used for the MCP1812BT-020/LB?
The MCP1812BT-020/LB uses the 3-Lead SOT-23 (TO-236) package, as indicated by the "/LB" suffix per Microchip's ordering code convention. This compact, surface-mount package supports high-density layouts and has documented thermal resistance θJA = 211.33°C/W.
MCP1812BT-020/LB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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):
- 2V
- 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:
- SC-70-3
MCP1812BT-020/LB FAQ
1.How can I place an order for MCP1812BT-020/LB through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1812BT-020/LB 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-020/LB reliable?
The price and inventory of MCP1812BT-020/LB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1812BT-020/LB is usually 5 days.
3.What payment methods are accepted for MCP1812BT-020/LB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1812BT-020/LB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1812BT-020/LB?
MCP1812BT-020/LB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1812BT-020/LB 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-020/LB?
For technical support, including MCP1812BT-020/LB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1812BT-020/LB requirements.
6.How does Aetrix verify that MCP1812BT-020/LB is sourced from the original manufacturer or authorized distributors?
All MCP1812BT-020/LB 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-020/LB meets industry standards.
7.What is the process for return or replacement of MCP1812BT-020/LB?
All MCP1812BT-020/LB units undergo pre-shipment inspection (PSI). If there is an issue with MCP1812BT-020/LB, 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-020/LB part is unused and in its original packaging.
Return procedure for MCP1812BT-020/LB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCP1812BT-020/LB Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
