MIC39101-5.0BM >
MIC39101-5.0BM
Microchip Technology
IC REG LINEAR 5V 1A 8SOIC
1415 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 1A 8-SOIC
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MIC39101-5.0BM Microchip Technology
5.0 / 5.0 - (396 Ratings)

MIC39101-5.0BM

Product Overview

13028852

DiGi Electronics Part Number

MIC39101-5.0BM-DG
MIC39101-5.0BM

Description

IC REG LINEAR 5V 1A 8SOIC

Inventory

1415 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 1A 8-SOIC
Quantity
Minimum 1

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In Stock (All prices are in USD)
  • QTY Target Price Total Price
  • 1 0.5679 0.5679
  • 200 0.2201 44.0200
  • 500 0.2128 106.4000
  • 1000 0.2084 208.4000
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MIC39101-5.0BM Technical Specifications

Category Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Manufacturer Microchip Technology

Packaging Tube

Series -

Packaging Tube

Part Status Discontinued at Digi-Key

Output Configuration Positive

Output Type Fixed

Number of Regulators 1

Voltage - Input (Max) 16V

Voltage - Output (Min/Fixed) 5V

Voltage - Output (Max) -

Voltage Dropout (Max) 0.63V @ 1A

Current - Output 1A

PSRR -

Control Features Enable

Protection Features Over Current, Over Temperature, Reverse Polarity

Operating Temperature -40°C ~ 125°C

Mounting Type Surface Mount

Package / Case 8-SOIC (0.154", 3.90mm Width)

Supplier Device Package 8-SOIC

Base Product Number MIC39101

Datasheet & Documents

HTML Datasheet

MIC39101-5.0BM-DG

Environmental & Export Classification

RoHS Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0060

Additional Information

Standard Package
95

Alternative Parts

View Details
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
MIC39101-5.0YM
Microchip Technology
1928
MIC39101-5.0YM-DG
0.0110
Direct

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5.0/5.0-(Show up to 5 Ratings)
にじ***やぎ
de desembre 02, 2025
5.0
サポート体制が整っていて、初めての方でも安心です。
Wi***ong
de desembre 02, 2025
5.0
The company's packaging standards are exceptional, ensuring product integrity.
Twil***tEcho
de desembre 02, 2025
5.0
I appreciate their excellent after-sales support, which enhances my overall experience.
JoyJ***tion
de desembre 02, 2025
5.0
DiGi makes shopping cost-effective, and their customer service is consistently top-tier.
Brig***uest
de desembre 02, 2025
5.0
The company’s product quality and support set a benchmark in the industry.
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Frequently Asked Questions (FAQ)

What are the key design-in risks when using the MIC39101-5.0BM in a high-temperature industrial application near 125°C?

When designing the MIC39101-5.0BM into high-temperature environments, especially near its maximum operating temperature of 125°C, the primary risk is thermal shutdown due to internal overtemperature protection activating under sustained load. Since the MIC39101-5.0BM is a linear regulator with a dropout voltage up to 0.63V at 1A, power dissipation (P = (Vin - Vout) × Iload) can quickly exceed the thermal limits of the 8-SOIC package without adequate PCB copper heatsinking. To mitigate this, ensure at least 2–3 cm² of copper pour connected to the GND pin for thermal dissipation, avoid placing near other heat sources, and consider derating the maximum load current above 85°C ambient. Monitor junction temperature during validation to avoid intermittent regulation failures due to thermal cycling in critical systems.

Can the MIC39101-5.0BM safely replace LM1084-5.0 in a 5V, 1A rail where low dropout and surge current handling are critical?

Replacing the LM1084-5.0 with the MIC39101-5.0BM requires careful evaluation: while both support 1A output, the MIC39101-5.0BM offers a much lower dropout voltage (0.63V vs. ~1.3V for LM1084-5.0 at 1A), improving efficiency in low headroom designs. However, the MIC39101-5.0BM lacks LM1084’s higher surge current tolerance and has stricter thermal limitations in the 8-SOIC package. Additionally, the MIC39101-5.0BM includes an enable pin and better reverse polarity protection, which can simplify control logic. Validate transient loads and startup inrush—especially with large output capacitors—as the MIC39101-5.0BM’s current limiting may engage unexpectedly. Use thermal vias and ensure input voltage stays within 6.2V max under dropout conditions to avoid thermal runaway.

How does the discontinued status of the MIC39101-5.0BM affect long-term reliability and availability in new designs?

Although the MIC39101-5.0BM is listed as discontinued at Digi-Key, with 1366 units still in stock as new original parts, its use in new production designs carries supply chain risk. Long-term reliability isn’t compromised if stored and handled properly (MSL 1 ensures unlimited floor life), but for products requiring multi-year production, relying on the MIC39101-5.0BM could lead to obsolescence bottlenecks. The recommended substitute, MIC39101-5.0YM (same specs, different packaging), should be evaluated for footprint compatibility. For high-reliability applications, consider redesigning with pin-compatible alternatives like the TPS7A4700 or LT1763-5, ensuring dropout, noise, and transient response requirements are met. Always secure last-time buys with traceable authenticity if proceeding with the MIC39101-5.0BM.

What PCB layout practices are critical to prevent instability and overheating when integrating the MIC39101-5.0BM in a compact power rail?

To ensure stable and reliable operation of the MIC39101-5.0BM in space-constrained designs, follow strict layout guidelines: place a low-ESR 10μF ceramic capacitor as close as possible to the input pin and GND, with short, wide traces to minimize loop inductance. Similarly, use a minimum 22μF ceramic output capacitor near the output pin to control transient response and prevent oscillation. Avoid routing high-current or switching traces near the feedback or enable lines, as the MIC39101-5.0BM is sensitive to noise despite lacking explicit PSRR data. Crucially, tie the GND pin directly to a large thermal ground plane using multiple vias to enhance heat dissipation—this is essential in the 8-SOIC package which cannot handle prolonged >1.5W dissipation without derating. Poor layout can lead to thermal throttling or false overcurrent trips.

How does the reverse polarity protection in the MIC39101-5.0BM compare to discrete diode-based designs in automotive applications?

The MIC39101-5.0BM includes integrated reverse polarity protection, eliminating the need for an external series diode that would otherwise increase power loss and heat—critical in automotive systems where battery reversals can occur during service. Unlike discrete solutions (e.g., series Schottky diodes) that drop 0.3–0.5V and reduce efficiency, the MIC39101-5.0BM blocks reverse current without additional voltage loss, preserving the low dropout advantage. However, it does not protect against reverse voltage on the output (e.g., back-driving from another rail), so ensure no secondary sources are connected to the 5V output. This makes the MIC39101-5.0BM more robust than basic LDOs without protection, but for harsh automotive transients (load dump, ISO 7637), pair it with transient voltage suppressors on the input for full system reliability.

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