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MIC5319-2.8BD5
Microchip Technology
IC REG LIN 2.8V 500MA TSOT23-5
23795 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 500mA TSOT-23-5
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5.0 / 5.0
- (271 Ratings)
MIC5319-2.8BD5
Product Overview
1375889
DiGi Electronics Part Number
MIC5319-2.8BD5-DGManufacturer
Microchip Technology
MIC5319-2.8BD5
Description
IC REG LIN 2.8V 500MA TSOT23-5Inventory
23795 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 500mA TSOT-23-5
Quantity
Minimum 1
Minimum 1
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MIC5319-2.8BD5 Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
-
Series
-
Product Status
Obsolete
Output Configuration
Positive
Output Type
Fixed
Number of Regulators
1
Voltage - Input (Max)
5.5V
Voltage - Output (Min/Fixed)
2.8V
Voltage - Output (Max)
-
Voltage Dropout (Max)
0.4V @ 500mA
Current - Output
500mA
Current - Quiescent (Iq)
150 µA
PSRR
70dB ~ 60dB (1kHz ~ 10kHz)
Control Features
Enable
Protection Features
Over Current, Over Temperature
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5 Thin, TSOT-23-5
Supplier Device Package
TSOT-23-5
Base Product Number
MIC5319
Datasheet & Documents
HTML Datasheet
MIC5319-2.8BD5-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Standard Package
1
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
Dieses Unternehmen setzt Maßstäbe mit umweltfreundlicher Verpackung zu fairen Preisen.
грудня 02, 2025
The durability and finish of the products are impressive, and delivery was swift.
грудня 02, 2025
Ordered items arrived faster than I expected, thanks to efficient logistics.
грудня 02, 2025
Clear pricing and consistent product performance are what make shopping with them enjoyable.
грудня 02, 2025
The vast assortment ensures there’s something for everyone at DiGi Electronics.
грудня 02, 2025
Their reliable dispatch speed and sturdy products have consistently met my project needs.
грудня 02, 2025
My items arrived faster than I expected, thanks to their reliable shipping process.
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Frequently Asked Questions (FAQ)
Can the MIC5319-2.8BD5 be used in battery-powered designs where quiescent current affects runtime, and how does its 150µA Iq impact system efficiency under light loads?
Yes, the MIC5319-2.8BD5 can be used in battery-powered applications, but its 150µA quiescent current may impact long-term battery life in ultra-low-power systems. While not among the lowest-Iq LDOs available (e.g., compared to the TPS7A02 with 25nA), it offers a reasonable balance for moderate battery life requirements. To mitigate risks, use the Enable pin to shut down the regulator when the load is inactive. Ensure the downstream load current is significantly higher than 150µA during operation to keep relative losses low. Avoid relying on this part in always-on IoT sensors with µA-level average consumption.
What are the key thermal risks when operating the MIC5319-2.8BD5 at 500mA output current in a TSOT-23-5 package, and how can PCB layout reduce junction temperature?
Operating the MIC5319-2.8BD5 at 500mA with significant input-to-output differential voltage (e.g., 5V in → 2.8V out) creates ~110mW of power dissipation, which can raise junction temperature notably in the small TSOT-23-5 package. Without adequate PCB copper for heatsinking, the junction may approach or exceed 125°C in high ambient environments. To reduce thermal risk: use a 4-layer board with thermal vias under the exposed pad (if applicable), connect the GND pin to large copper planes, limit continuous load to 300–400mA unless ambient is controlled, and verify operation with thermal testing under worst-case conditions.
Is the MIC5319-2.8BD5 suitable as a drop-in replacement for the RT9193-28GB in existing designs, and what are the critical differences affecting compatibility?
The MIC5319-2.8BD5 is not a guaranteed drop-in replacement for the RT9193-28GB despite both being 2.8V fixed LDOs in TSOT-23-5. Key differences include higher dropout voltage (400mV vs. RT9193’s ~180mV at 300mA) and higher quiescent current (150µA vs. ~1µA). If the input voltage is marginal (e.g., 3.0V), the MIC5319 may fail to regulate under full load. Additionally, their Enable pin logic and pull resistors may differ—verify control circuitry compatibility. Always revalidate thermal performance, noise, and start-up behavior when swapping parts.
How does the PSRR of the MIC5319-2.8BD5 (70dB at 1kHz) affect its suitability for powering noise-sensitive analog circuits like ADCs or RF modules?
The MIC5319-2.8BD5’s 70dB PSRR at 1kHz helps suppress moderate input ripple, making it usable for powering low-to-moderate performance ADCs or RF receivers. However, its PSRR degrades to 60dB at 10kHz, limiting effectiveness against higher-frequency switching noise from DC-DC converters. For sensitive analog rails, pair the MIC5319-2.8BD5 with additional output filtering (e.g., a π-filter using ferrite bead and ceramic caps) and ensure clean input supply. Avoid using it downstream of very noisy SMPS without pre-filtering. Consider alternatives like the TPS799 with higher PSRR if noise immunity is critical.
Given that the MIC5319-2.8BD5 is marked as obsolete and RoHS non-compliant, what are the long-term reliability and compliance risks in new or high-volume designs?
Using the MIC5319-2.8BD5 in new designs carries significant long-term risks due to its obsolete status and RoHS non-compliance. Supply chain continuity is uncertain—it may become unavailable without notice, disrupting production. The lead finish may not meet modern lead-free manufacturing standards, increasing risk of solder joint defects in reflow processes. For high-volume or long-lifecycle products, transition to a recommended substitute like the RT9193-28GB or a RoHS-compliant pin-to-pin alternative. If you must use it, procure extended-life inventory and validate second-source availability.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
MIC5319-2.8BD5 CAD Models
Microchip Technology MIC5319-2.8BD5 PCB symbols & footprints
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