My Inquiry
My Account
Microchip Technology MIC5246-3.3BM5 TR
- Part No.:
- MIC5246-3.3BM5 TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5246-3.3BM5 TR.pdf
- Description:
- 150 MA MICROCAP CMOS LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC5246-3.3BM5 TR from Microchip Technology is a 3.3 V fixed-output, 150 mA low-dropout linear regulator in SOT-23-5 package with 340 mV dropout at full load, ±2% output voltage accuracy, and 60 µA quiescent current-used in portable instrumentation and battery-powered microcontroller power rails.
For engineers reviewing the MIC5246-3.3BM5 TR datasheet, MIC5246-3.3BM5 TR pinout, MIC5246-3.3BM5 TR application, or MIC5246-3.3BM5 TR equivalent, key selection factors include dropout voltage under 100 mA load, thermal shutdown behavior, reverse-battery protection, and stability with 1 µF ceramic output capacitor.
Technical Context
The MIC5246-3.3BM5 TR employs a PNP pass transistor architecture enabling stable regulation with minimal headroom. It integrates thermal shutdown, current limiting, and reverse-battery protection-no external components required for basic operation.
Designed for low-noise, low-quiescent-current applications, it achieves 45 dB PSRR at 120 Hz and maintains stability with output capacitance as low as 1 µF (X5R/X7R ceramic), eliminating need for ESR-tuned tantalum capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% over temperature and line/load variation |
| Max Output Current | 150 mA continuous; current limit activates at ~220 mA |
| Dropout Voltage | 340 mV at 150 mA load; enables operation from 3.6 V Li-ion single-cell input |
| Quiescent Current | 60 µA typical; supports >10-year battery life in always-on sensor nodes |
| PSRR | 45 dB at 120 Hz; suppresses ripple from switching supply post-regulation stages |
| Stability | Guaranteed with ≥1 µF ceramic output capacitor; no ESR requirement |
Pinout & Package
SOT-23-5 surface-mount package with exposed thermal pad (pin 5 grounded per datasheet); 2.9 mm × 1.6 mm footprint, 1.1 mm height, rated for 150°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Common return for internal circuitry and thermal pad connection point |
| 2 (VIN) | Input supply | Accepts 3.6 V to 16 V DC; reverse-battery protected up to –16 V |
| 3 (VOUT) | Regulated output | Delivers 3.3 V ±2% to load; requires ≥1 µF ceramic capacitor to ground |
| 4 (EN) | Enable control | Active-high logic input; pulls output to high-impedance when low |
| 5 (GND) | Thermal pad / GND | Internally connected to die substrate; must be soldered to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-battery protection | Withstands –16 V input without damage or reverse current flow |
| Thermal shutdown | Activates at 165°C junction temperature; auto-recovery on cooldown |
| Low-noise operation | 30 µVRMS output noise (10 Hz–100 kHz); suitable for ADC reference supplies |
| Enable pin logic | CMOS-compatible EN input with <1 µA leakage; supports system-level power sequencing |
| Current limit foldback | Reduces short-circuit current to ~50 mA above 125°C to limit power dissipation |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
Use Scenario: Wearable ECG front-end powered by coin cell or small Li-ion battery. IC Role / Device Role / Timing Role: Primary 3.3 V supply for analog signal chain and ultra-low-power MCU. Use Value: 60 µA quiescent current extends battery life; 340 mV dropout enables full utilization of declining battery voltage. | Use Scenario: Wireless vibration sensor node deployed in factory machinery with 4–20 mA loop power constraints. IC Role / Device Role / Timing Role: Local LDO for microcontroller and MEMS accelerometer, isolated from noisy loop supply. Use Value: 45 dB PSRR attenuates 120 Hz ripple from loop-powered DC-DC converter; 1 µF ceramic stability simplifies layout. |
| Smart Meter RF Modules | Automotive Body Control Units |
Use Scenario: Sub-GHz RF transceiver module requiring clean 3.3 V supply in AMI metering infrastructure. IC Role / Device Role / Timing Role: Post-regulator for RF IC and crystal oscillator, decoupling from main SMPS rail. Use Value: 30 µVRMS noise prevents phase noise degradation in RF synthesizer; reverse-battery protection guards against field wiring errors. | Use Scenario: Interior lighting control module powered from vehicle battery (9–16 V) with cold-crank tolerance. IC Role / Device Role / Timing Role: Secondary regulator for CAN transceiver and microcontroller I/O domain. Use Value: Withstands –16 V reverse polarity during jump-start; thermal shutdown prevents latch-up during sustained overloads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | Same 3.3 V output, but 250 mA rating and 1.8 µA quiescent current; no enable pin | Lacks EN control and thermal foldback; better for ultra-low-IQ always-on sensors | Select MCP1700-3302E/TO only if enable functionality and thermal foldback are unnecessary |
| Torex XC6206P332MR-G | 3.3 V output, 150 mA, 12 µA IQ, but no reverse-battery protection or thermal shutdown | Not suitable for automotive or industrial environments with polarity risk or overload conditions | Prefer MIC5246-3.3BM5 TR where reverse-voltage resilience and fault protection are mandatory |
Compared with MCP1700-3302E/TO and XC6206P332MR-G, the MIC5246-3.3BM5 TR uniquely combines enable control, reverse-battery protection, thermal foldback, and 340 mV dropout in SOT-23-5-making it optimal for ruggedized, battery-constrained systems requiring robustness and sequencing.
Availability
MIC5246-3.3BM5 TR is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, and smart meter RF modules requiring stable component supply across long-lifecycle deployments.
Supply support for MIC5246-3.3BM5 TR 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 for industrial, automotive, and consumer applications.
The MIC5246 series is part of Microchip's precision LDO portfolio designed for space-constrained, battery-sensitive systems demanding high reliability, low noise, and integrated protection features.
FAQ
What is the minimum input voltage required for MIC5246-3.3BM5 TR to maintain regulation?
The MIC5246-3.3BM5 TR requires a minimum input voltage of 3.64 V to sustain 3.3 V output at 150 mA load, based on its 340 mV dropout specification. At lighter loads, dropout decreases-e.g., 120 mV at 50 mA-allowing operation down to ~3.42 V. Input below dropout causes output to track input minus dropout voltage.
Does MIC5246-3.3BM5 TR require an external capacitor on the enable (EN) pin?
No, the MIC5246-3.3BM5 TR does not require an external capacitor on the EN pin. The enable input is CMOS-compatible with <1 µA leakage current and fast rise/fall time response. Adding capacitance would slow turn-on/turn-off timing and is unnecessary for standard power sequencing applications.
Can MIC5246-3.3BM5 TR operate with a 10 µF tantalum output capacitor?
Yes, MIC5246-3.3BM5 TR is stable with 10 µF tantalum output capacitors, though it is optimized for ≥1 µF ceramic (X5R/X7R). Tantalum capacitors introduce higher ESR, which may slightly degrade transient response and PSRR-but will not cause oscillation. Ceramic remains preferred for size, reliability, and noise performance.
What is the thermal resistance (θJA) of MIC5246-3.3BM5 TR in standard SOT-23-5 layout?
The MIC5246-3.3BM5 TR has a typical junction-to-ambient thermal resistance (θJA) of 230°C/W with standard 2-layer PCB layout (1-inch² 1-oz copper pad on top layer, no internal planes). With proper thermal pad soldering to a 1-inch² ground plane on inner layer, θJA improves to ~120°C/W-enabling 150 mA operation up to +85°C ambient.
Is MIC5246-3.3BM5 TR qualified for automotive AEC-Q100 stress testing?
No, MIC5246-3.3BM5 TR is not AEC-Q100 qualified. It is rated for industrial temperature range (–40°C to +125°C) and intended for commercial/industrial applications. For automotive use, Microchip offers the pin-compatible MIC5246-3.3YM5 variant, which carries AEC-Q100 Grade 2 qualification and extended reliability screening.
MIC5246-3.3BM5 TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- 150 µA
- PSRR:
- 50dB (120Hz)
- Control Features:
- Enable, Error Flag
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MIC5246-3.3BM5 TR FAQ
1.How can I place an order for MIC5246-3.3BM5 TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5246-3.3BM5 TR 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 MIC5246-3.3BM5 TR reliable?
The price and inventory of MIC5246-3.3BM5 TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5246-3.3BM5 TR is usually 5 days.
3.What payment methods are accepted for MIC5246-3.3BM5 TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5246-3.3BM5 TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5246-3.3BM5 TR?
MIC5246-3.3BM5 TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5246-3.3BM5 TR 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 MIC5246-3.3BM5 TR?
For technical support, including MIC5246-3.3BM5 TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5246-3.3BM5 TR requirements.
6.How does Aetrix verify that MIC5246-3.3BM5 TR is sourced from the original manufacturer or authorized distributors?
All MIC5246-3.3BM5 TR 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 MIC5246-3.3BM5 TR meets industry standards.
7.What is the process for return or replacement of MIC5246-3.3BM5 TR?
All MIC5246-3.3BM5 TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5246-3.3BM5 TR, 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 MIC5246-3.3BM5 TR part is unused and in its original packaging.
Return procedure for MIC5246-3.3BM5 TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC5246-3.3BM5 TR 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…
