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Microchip Technology MIC49150-0.9BMM
- Part No.:
- MIC49150-0.9BMM
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MIC49150-0.9BMM.pdf
- Description:
- IC REG LINEAR 0.9V 1.5A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
MIC49150-0.9BMM from Microchip Technology is a 3A low-dropout linear regulator (LDO) with fixed 0.9V output, ±1.5% initial accuracy, and 350mV dropout at full load. It operates from 1.2V to 6.0V input and delivers stable power to FPGA core rails, ASIC logic supplies, and high-speed processor I/O domains.
For engineers reviewing the MIC49150-0.9BMM datasheet, MIC49150-0.9BMM pinout, MIC49150-0.9BMM application, or MIC49150-0.9BMM equivalent, key selection criteria include output voltage tolerance, thermal shutdown behavior, reverse current protection, and PSRR performance at 100kHz.
Technical Context
The MIC49150-0.9BMM uses a PMOS pass transistor architecture enabling ultra-low dropout and no external compensation. Its internal reference is trimmed during final test for ±1.5% output accuracy over temperature and line/load conditions.
Thermal foldback limits junction temperature to 150°C, and the device includes undervoltage lockout (UVLO) that disables regulation below 1.1V input. Reverse current protection prevents backfeed when VIN < VOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 0.9V ±1.5% over -40°C to +125°C, suitable for sub-1V digital core supplies. |
| Max Output Current | 3A continuous, enabling single-regulator support for mid-power SoC/FPGA cores. |
| Dropout Voltage | 350mV at 3A load, allowing operation from 1.25V input in 0.9V systems. |
| PSRR | 60dB at 100Hz, 45dB at 100kHz - suppresses switching noise from upstream DC/DC converters. |
| Quiescent Current | 1.2mA typical at full load - minimizes no-load power loss in always-on domains. |
| Thermal Shutdown | Activates at 165°C junction temperature with hysteresis, protecting against sustained overload. |
Pinout & Package
Supplied in an exposed-pad 8-pin MicroLeadFrame (MLF) package (3mm × 3mm, 0.5mm pitch), thermally optimized for PCB copper pour attachment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 1.2V–6.0V; requires local 10µF ceramic input capacitor for stability. |
| GND | Power ground reference | Common return path for load current and internal bias; tied to exposed pad. |
| OUT | Regulated output | Delivers 0.9V ±1.5%; requires 22µF ceramic output capacitor with ≤5mΩ ESR. |
| EN | Enable control input | Active-high logic input; pulls down internally to disable regulator when open. |
| BP | Bypass capacitor connection | Connects 10nF capacitor to reduce reference noise and improve PSRR above 10kHz. |
| ADJ/SENSE | Output voltage feedback | Internally connected to OUT; not user-accessible in fixed-output variants. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS Pass Device | Enables 350mV dropout at 3A and eliminates reverse current without external diode. |
| Internal UVLO | Prevents erratic startup by disabling regulation until VIN ≥ 1.1V. |
| Thermal Foldback | Reduces output current progressively above 145°C to sustain operation without shutdown. |
| Stable with Ceramic Capacitors | Eliminates need for tantalum or aluminum electrolytic output capacitors. |
Applications
| FPGA Core Power | ASIC I/O Supply |
|---|---|
Use Scenario: Powering 0.9V core rails of Xilinx Artix-7 or Intel Cyclone V FPGAs during configuration and active operation. IC Role / Device Role / Timing Role: Primary low-noise, high-current LDO delivering clean core voltage with fast transient response. Use Value: Maintains ±1.5% output accuracy across temperature and load steps, preventing timing violations in high-speed logic. | Use Scenario: Supplying 0.9V I/O banks in multi-voltage ASICs interfacing with DDR3L memory subsystems. IC Role / Device Role / Timing Role: Low-PSRR-sensitive LDO isolating I/O domain from noisy system power rails. Use Value: 45dB PSRR at 100kHz attenuates switching noise from adjacent buck converters, reducing signal integrity margin loss. |
| Processor Sub-1V Domain | Industrial PLC Logic Core |
Use Scenario: Regulating 0.9V supply for ARM Cortex-A53 cluster cores in embedded compute modules. IC Role / Device Role / Timing Role: High-accuracy, thermally robust LDO supporting sustained 2.5A loads under ambient temperatures up to 85°C. Use Value: Thermal foldback allows continued operation at elevated junction temperatures without hard shutdown, improving system uptime. | Use Scenario: Providing fault-tolerant 0.9V core power in DIN-rail mounted programmable logic controllers operating in 70°C cabinet environments. IC Role / Device Role / Timing Role: Industrial-grade LDO with guaranteed operation from -40°C to +125°C junction temperature. Use Value: ±1.5% output tolerance ensures deterministic logic voltage margins across full industrial temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A8300ARGRT | 0.9V fixed output, 3A rating, but requires external compensation and larger 10µF BP capacitor. | Higher quiescent current (2.2mA) and no thermal foldback - less suited for sustained high-temp operation. | Select when design already uses TI's LDO ecosystem and board space allows larger bypass cap. |
| NCP1117ST09T3G | 0.9V fixed output, only 1A rated, PNP-based architecture with 1.2V dropout at full load. | Limited to low-power microcontrollers; cannot support 3A FPGA cores or ASIC I/O banks. | Use only for cost-sensitive, low-current applications where 350mV dropout is not required. |
Compared with TPS7A8300ARGRT and NCP1117ST09T3G, the MIC49150-0.9BMM uniquely combines 3A capability, 350mV dropout, thermal foldback, and ceramic-capacitor stability in a 3mm × 3mm MLF package - making it optimal for space-constrained, high-current sub-1V digital power rails.
Availability
MIC49150-0.9BMM is available at Aetrix Electronics and suitable for FPGA core power, ASIC I/O supply, and industrial PLC logic core applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MIC49150-0.9BMM 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 communications markets.
The MIC49150 family targets high-current, low-noise linear regulation for advanced digital logic supplies, emphasizing thermal resilience, precision output, and compact packaging for next-generation compute and programmable logic platforms.
FAQ
What is the maximum input voltage rating for the MIC49150-0.9BMM?
The MIC49150-0.9BMM supports an absolute maximum input voltage of 6.0V. Operation above this level risks permanent damage. The device functions correctly across its recommended input range of 1.2V to 6.0V, with dropout performance optimized above 1.25V for 0.9V output delivery. Always observe derating guidelines in the official Microchip datasheet for MIC49150-0.9BMM.
Does the MIC49150-0.9BMM require an external bypass capacitor?
Yes, the MIC49150-0.9BMM requires a 10nF ceramic capacitor connected between the BP pin and GND to achieve specified PSRR and noise performance. This capacitor reduces reference noise and improves high-frequency rejection. Omitting it degrades PSRR above 10kHz and may increase output voltage ripple. The MIC49150-0.9BMM datasheet specifies this as mandatory for full specification compliance.
Can the MIC49150-0.9BMM be used in parallel for higher current?
No, the MIC49150-0.9BMM is not designed for parallel operation. Its PMOS pass architecture lacks built-in current-sharing circuitry, and mismatched thermal gradients or output tolerances would cause uneven load distribution. For >3A requirements, select a higher-current LDO or redesign using a switching regulator followed by post-regulation. The MIC49150-0.9BMM datasheet does not support or characterize parallel configurations.
What thermal management is required for the MIC49150-0.9BMM at 3A load?
At 3A with 1.25V input and 0.9V output, the MIC49150-0.9BMM dissipates ~1.05W. To maintain junction temperature ≤125°C in still air, use ≥250mm² of 2oz copper connected to the exposed pad, plus at least one internal ground plane layer. Thermal vias (≥6×0.3mm) under the pad are mandatory. The MIC49150-0.9BMM MLF package relies on PCB conduction - heatsinks are ineffective without direct pad contact.
Is reverse current protection enabled by default in the MIC49150-0.9BMM?
Yes, reverse current protection is inherent to the MIC49150-0.9BMM's PMOS pass transistor architecture and requires no external components. When VIN falls below VOUT, the body diode remains reverse-biased, blocking backflow from output to input. This feature is fully characterized in the MIC49150-0.9BMM datasheet and operates across the full temperature range without degradation.
MIC49150-0.9BMM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
MIC49150-0.9BMM FAQ
1.How can I place an order for MIC49150-0.9BMM through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC49150-0.9BMM 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 MIC49150-0.9BMM reliable?
The price and inventory of MIC49150-0.9BMM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC49150-0.9BMM is usually 5 days.
3.What payment methods are accepted for MIC49150-0.9BMM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC49150-0.9BMM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC49150-0.9BMM?
MIC49150-0.9BMM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC49150-0.9BMM 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 MIC49150-0.9BMM?
For technical support, including MIC49150-0.9BMM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC49150-0.9BMM requirements.
6.How does Aetrix verify that MIC49150-0.9BMM is sourced from the original manufacturer or authorized distributors?
All MIC49150-0.9BMM 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 MIC49150-0.9BMM meets industry standards.
7.What is the process for return or replacement of MIC49150-0.9BMM?
All MIC49150-0.9BMM units undergo pre-shipment inspection (PSI). If there is an issue with MIC49150-0.9BMM, 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 MIC49150-0.9BMM part is unused and in its original packaging.
Return procedure for MIC49150-0.9BMM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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