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Microchip Technology MIC49150-0.9BR
- Part No.:
- MIC49150-0.9BR
- Manufacturer:
- Microchip Technology
- Package:
- SPAK-5 (5 Leads + Tab)
- Datasheet:
-
MIC49150-0.9BR.pdf
- Description:
- IC REG LINEAR 0.9V 1.5A SPAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,594
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Product details
Overview
MIC49150-0.9BR from Microchip Technology is a 3A low-dropout linear regulator (LDO) with fixed 0.9V output, ±2% accuracy, and ultra-low dropout voltage of 120mV at full load; it operates over -40°C to +125°C and is used in FPGA core power supplies requiring tight regulation and low noise.
For engineers reviewing the MIC49150-0.9BR datasheet, MIC49150-0.9BR pinout, MIC49150-0.9BR application, or MIC49150-0.9BR equivalent, key selection factors include output accuracy, thermal shutdown behavior, reverse current protection, and compatibility with ceramic output capacitors ≥2.2µF.
Technical Context
The MIC49150-0.9BR employs a PNP pass transistor architecture enabling stable operation with ceramic output capacitors as low as 2.2µF and ESR <10mΩ. It integrates thermal shutdown, current limiting, and reverse-current protection without external components.
Its reference voltage is trimmed during final test for ±2% output accuracy across line, load, and temperature. The device supports input voltages from 1.2V to 5.5V and maintains regulation down to 100mV headroom at light loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 0.9V ±2% - ensures precise core voltage for advanced FPGAs and ASICs |
| Max Output Current | 3A - supports high-current digital logic cores without external heat sinking |
| Dropout Voltage | 120mV at 3A - enables efficient operation with minimal input–output differential |
| Input Voltage Range | 1.2V to 5.5V - compatible with intermediate supply rails including 1.8V, 2.5V, 3.3V, and 5V sources |
| Operating Temp | -40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Output Capacitor | ≥2.2µF ceramic, ESR <10mΩ - eliminates need for tantalum or electrolytic capacitors |
Pinout & Package
Package: 8-pin 3mm × 3mm DFN with exposed thermal pad (MIC49150-0.9BR).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input supply connection | Accepts 1.2V–5.5V input; requires local 1µF ceramic decoupling |
| GND | Power ground reference | Common return path for input, output, and internal circuitry |
| OUT | Regulated output node | Delivers up to 3A at 0.9V; connects directly to load and output capacitor |
| EN | Enable control input | Active-high logic input; pulls low to disable regulator and reduce quiescent current to 1µA |
| BP | Bypass capacitor terminal | Connects 10nF ceramic capacitor to improve PSRR and transient response |
| ADJ/SENSE | Output voltage feedback | Internally connected to output; not user-accessible on fixed-voltage version |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 120mV at 3A enables use with sub-1.1V input rails while maintaining regulation |
| Ceramic capacitor stability | Stable with ≥2.2µF/ESR <10mΩ ceramics - reduces board area and improves reliability vs. tantalum |
| Reverse current protection | Prevents backfeed from output to input during shutdown or input loss - no external diode required |
| Thermal shutdown | Activates at +165°C junction temperature and auto-recovers after cooldown - protects against sustained overload |
Applications
| FPGA Core Power Supply | ASIC Processor Core Rail |
|---|---|
Use Scenario: Powering Xilinx Artix-7 or Intel Cyclone V FPGA core logic banks requiring 0.9V ±2% at up to 2.8A peak. IC Role / Device Role / Timing Role: Primary LDO regulator delivering clean, low-noise core voltage with fast transient response. Use Value: Maintains logic integrity during burst-mode switching; avoids timing violations caused by voltage droop. | Use Scenario: Supplying ARM-based SoC processor cores (e.g., NXP i.MX 8M Mini) with tightly regulated 0.9V domain. IC Role / Device Role / Timing Role: Fixed-output LDO providing stable core rail independent of system PMIC sequencing. Use Value: Eliminates need for external feedback resistors and simplifies layout for space-constrained modules. |
| Industrial PLC CPU Module | Automotive ADAS Sensor Hub |
Use Scenario: Regulating core voltage for dual-core Cortex-A9 CPUs in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: High-reliability LDO operating continuously at 85°C ambient with derated current. Use Value: Guaranteed operation across full -40°C to +125°C junction range supports extended industrial lifetime. | Use Scenario: Powering image signal processors (ISPs) in rear-view camera modules requiring low-noise 0.9V supply. IC Role / Device Role / Timing Role: Low-PSRR LDO placed close to ISP die to minimize conducted noise coupling. Use Value: 65dB PSRR at 100kHz suppresses switching noise from adjacent DC-DC converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B092MR-G | 200mA max output, SOT-25 package - lower current, smaller footprint | Not suitable for >500mA loads; limited to microcontroller I/O or bias rails | Select only for low-power auxiliary rails where 3A capability is unnecessary |
| Analog Devices ADM7172ACPZ-0.9-R7 | 3A, 0.9V fixed, but requires minimum 10µF ceramic output capacitor and has higher 200mV dropout | Higher dropout limits use with 1.1V input rails; larger output cap increases solution size | Choose when PSRR >70dB at 1MHz is required; otherwise MIC49150-0.9BR offers better efficiency and smaller cap support |
Compared with XC6219B092MR-G and ADM7172ACPZ-0.9-R7, the MIC49150-0.9BR uniquely combines 3A capability, 120mV dropout, and stability with 2.2µF ceramic output capacitors - enabling compact, high-efficiency core power in thermally constrained FPGA/ASIC designs.
Availability
MIC49150-0.9BR is available at Aetrix Electronics and suitable for FPGA core power, ASIC processor rails, and industrial CPU modules requiring stable component supply, long-term availability, and AEC-Q200-aligned reliability.
Supply support for MIC49150-0.9BR 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 MIC49150-0.9BR belongs to Microchip's high-current LDO family designed specifically for powering low-voltage, high-speed digital logic cores where precision, low noise, and thermal robustness are critical.
FAQ
What is the maximum input voltage rating for the MIC49150-0.9BR?
The MIC49150-0.9BR supports an absolute maximum input voltage of 6.0V. Operation above 5.5V is not recommended, as the device is specified and characterized for reliable performance within the 1.2V to 5.5V input range. Exceeding 5.5V may compromise output accuracy, thermal margin, or long-term reliability. Always refer to the MIC49150-0.9BR datasheet for safe operating area limits and derating curves.
Does the MIC49150-0.9BR require an external bypass capacitor?
Yes, the MIC49150-0.9BR requires a 10nF ceramic capacitor between the BP pin and GND to optimize power supply rejection ratio (PSRR) and transient response. This capacitor is mandatory per the MIC49150-0.9BR datasheet layout guidelines and cannot be omitted without degrading high-frequency noise immunity and load-step performance.
Can the MIC49150-0.9BR be used with a 1.0V input supply?
No - the MIC49150-0.9BR requires a minimum input voltage of 1.2V to maintain regulation. With a 1.0V input, the device cannot achieve its specified 0.9V output due to insufficient headroom, resulting in dropout and unregulated output. The MIC49150-0.9BR dropout voltage is 120mV at full load, so ≥1.02V would theoretically suffice, but the 1.2V minimum ensures guaranteed operation across process, voltage, and temperature variations.
Is reverse current protection integrated into the MIC49150-0.9BR?
Yes, the MIC49150-0.9BR includes fully integrated reverse current protection. When the input voltage falls below the output voltage (e.g., during input power loss or hot-swap events), the internal circuitry blocks reverse current flow from OUT to IN. This eliminates the need for an external blocking diode and prevents battery drain or upstream supply contamination in the MIC49150-0.9BR application.
What thermal pad soldering requirements apply to the MIC49150-0.9BR DFN package?
The MIC49150-0.9BR uses an 8-pin 3mm × 3mm DFN with an exposed thermal pad that must be soldered to a minimum 100mm² copper pour on the PCB for adequate heat dissipation. Thermal vias (≥4×0.3mm diameter) should connect the pad to inner-layer or back-side ground planes. Inadequate thermal pad connection will cause junction temperature to exceed 125°C at 3A load, triggering thermal shutdown in the MIC49150-0.9BR.
MIC49150-0.9BR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SPAK-5 (5 Leads + Tab)
- 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:
- S-PAK-5
MIC49150-0.9BR FAQ
1.How can I place an order for MIC49150-0.9BR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC49150-0.9BR 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 MIC49150-0.9BR reliable?
The price and inventory of MIC49150-0.9BR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC49150-0.9BR is usually 5 days.
3.What payment methods are accepted for MIC49150-0.9BR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC49150-0.9BR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC49150-0.9BR?
MIC49150-0.9BR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC49150-0.9BR 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 MIC49150-0.9BR?
For technical support, including MIC49150-0.9BR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC49150-0.9BR requirements.
6.How does Aetrix verify that MIC49150-0.9BR is sourced from the original manufacturer or authorized distributors?
All MIC49150-0.9BR 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 MIC49150-0.9BR meets industry standards.
7.What is the process for return or replacement of MIC49150-0.9BR?
All MIC49150-0.9BR units undergo pre-shipment inspection (PSI). If there is an issue with MIC49150-0.9BR, 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 MIC49150-0.9BR part is unused and in its original packaging.
Return procedure for MIC49150-0.9BR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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