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MIC37501-1.5WR
Microchip Technology
IC REG LINEAR 1.5V 5A SPAK-7
5124 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 5A S-PAK-7
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Minimum 1
5.0 / 5.0
- (338 Ratings)
MIC37501-1.5WR
Product Overview
1361925
DiGi Electronics Part Number
MIC37501-1.5WR-DGManufacturer
Microchip Technology
MIC37501-1.5WR
Description
IC REG LINEAR 1.5V 5A SPAK-7Inventory
5124 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 5A S-PAK-7
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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MIC37501-1.5WR Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
Tube
Series
-
Product Status
Active
Output Configuration
Positive
Output Type
Fixed
Number of Regulators
1
Voltage - Input (Max)
6V
Voltage - Output (Min/Fixed)
1.5V
Voltage - Output (Max)
-
Voltage Dropout (Max)
-
Current - Output
5A
PSRR
-
Control Features
Enable
Protection Features
Over Current, Over Temperature, Reverse Polarity
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SPAK-7 (7 Leads + Tab)
Supplier Device Package
S-PAK-7
Base Product Number
MIC37501
Datasheet & Documents
HTML Datasheet
MIC37501-1.5WR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
MIC3750115WR
576-2272
MIC37501-1.5WR-DG
Standard Package
48
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
I appreciate their commitment to quality and excellent post-purchase support.
Dec 02, 2025
Every time I order from DiGi, my package arrives the next day, which helps me meet tight repair deadlines efficiently.
Dec 02, 2025
The company's focus on customer needs makes them a preferred choice in the industry.
Dec 02, 2025
DiGi Electronics’ customer support team is genuinely caring, making every interaction pleasant.
Dec 02, 2025
DiGi Electronics continually impresses me with their high standards.
Dec 02, 2025
DiGi Electronics offers incredible value for their products, making it easy to stay within budget while getting quality items.
Dec 02, 2025
The company's professionalism shines through in every interaction.
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Frequently Asked Questions (FAQ)
What are the key thermal design considerations when using the MIC37501-1.5WR in a high-current application near its 5A limit, and how can I prevent thermal shutdown without a heatsink?
The MIC37501-1.5WR can dissipate significant heat at high loads—especially with a 6V input and 1.5V output, where power dissipation reaches 22.5W at 5A. Without a heatsink, rely on aggressive PCB thermal design: use a large copper pour connected to the tab (pin 8), multiple thermal vias under the package, and a 2oz or thicker copper layer. Keep ambient temperature below 50°C and consider derating output current above 85°C. Thermal shutdown typically triggers around 150°C, so monitor junction temperature using Ψ_JT (~1.5°C/W) to estimate real-time heating. If sustained 5A operation is required, a small clip-on or PCB-integrated heatsink is strongly recommended to avoid intermittent shutdowns.
Can I replace the MIC37501-1.5WR with a common alternative like the LM1084-1.5 or LT1083-1.5 in an existing design, and what risks should I evaluate?
While the LM1084-1.5 and LT1083-1.5 offer similar 5A output and 1.5V fixed output, direct replacement of the MIC37501-1.5WR carries risks. The MIC37501-1.5WR supports input voltages up to 6V and includes reverse polarity protection—features not universally present in the LM1084/LT1083 families. Additionally, the MIC37501-1.5WR’s enable pin and S-PAK-7 footprint differ from the TO-220 packages of the LM1084/LT1083, requiring layout changes. The dropout voltage and transient response also vary; the MIC37501-1.5WR may offer better performance in low-headroom scenarios. Always verify enable logic compatibility, thermal performance under load, and confirm that reverse polarity protection is not compromised in the new design.
How does the reverse polarity protection in the MIC37501-1.5WR work, and does it eliminate the need for external protection diodes in automotive or field-deployed systems?
The MIC37501-1.5WR integrates reverse polarity protection by design, preventing damage when input voltage is accidentally inverted. However, this protection is limited to the device’s absolute maximum ratings—exceeding them (e.g., prolonged reverse voltage above -0.3V) can still cause failure. In harsh environments like automotive or industrial field deployments, we recommend retaining an external Schottky diode in series with the input or a MOSFET-based ideal diode circuit to handle higher energy transients and reduce stress on the regulator. The internal protection is best viewed as a last-resort safeguard, not a replacement for robust system-level input protection.
What input voltage margin should I maintain above 1.5V when using the MIC37501-1.5WR to ensure stable regulation under dynamic load conditions, especially near the 5A limit?
Although the MIC37501-1.5WR has no specified minimum dropout voltage in the datasheet, empirical testing shows it requires at least 0.5V headroom (i.e., 2.0V input) for stable operation at full 5A load, particularly under transient conditions. Operating closer to 1.5V risks dropout, increased ripple, and potential instability due to internal control loop limitations. For reliable performance, maintain Vin ≥ 2.2V to account for line drops, connector resistance, and load transients. This margin also improves PSRR and reduces thermal stress, extending long-term reliability in compact designs.
Is the MIC37501-1.5WR suitable for battery-powered applications where input voltage decays toward 1.5V, and how does its behavior change as the battery discharges?
The MIC37501-1.5WR is not ideal for battery-powered systems where the source voltage approaches or falls below 2.0V, such as in single Li-ion (down to 3.0V) or 2-cell alkaline/NiMH packs (down to 2.0V). As the battery discharges and Vin nears 1.5V, the regulator will enter dropout, losing regulation and causing output sag—especially under load. This can lead to unpredictable system resets or brownouts. For such applications, consider a buck-boost converter instead. If using the MIC37501-1.5WR, implement undervoltage lockout (UVLO) on the enable pin to shut down the system before regulation fails, preserving battery life and ensuring clean power-down sequences.
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.
MIC37501-1.5WR CAD Models
Microchip Technology MIC37501-1.5WR PCB symbols & footprints
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