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MIC37102BR
Microchip Technology
IC REG LINEAR POS ADJ 1A SPAK-5
28044 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Adjustable 1 Output 1A S-PAK-5
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5.0 / 5.0
- (239 Ratings)
MIC37102BR
Product Overview
1359483
DiGi Electronics Part Number
MIC37102BR-DGManufacturer
Microchip Technology
MIC37102BR
Description
IC REG LINEAR POS ADJ 1A SPAK-5Inventory
28044 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Adjustable 1 Output 1A S-PAK-5
Quantity
Minimum 1
Minimum 1
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MIC37102BR Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
-
Series
-
Product Status
Obsolete
Output Configuration
Positive
Output Type
Adjustable
Number of Regulators
1
Voltage - Input (Max)
6V
Voltage - Output (Min/Fixed)
1.24V
Voltage - Output (Max)
6V
Voltage Dropout (Max)
0.5V @ 1A
Current - Output
1A
PSRR
-
Control Features
Enable
Protection Features
Over Current, Over Temperature
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SPAK-5 (5 Leads + Tab)
Supplier Device Package
S-PAK-5
Base Product Number
MIC37102
Datasheet & Documents
HTML Datasheet
MIC37102BR-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Standard Package
48
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)
Dec 02, 2025
디지 일렉트로닉스는 가격이 훌륭하고, A/S도 빠르게 해결해주셔서 정말 감사드려요.
Dec 02, 2025
Ils ont su gérer mon retour avec beaucoup de professionnalisme, ce qui témoigne de leur sérieux.
Dec 02, 2025
Chez DiGi Electronics, nous bénéficions d’un stock suffisant et d’un support après-vente formidable.
Dec 02, 2025
Schnelle Lieferung, sichere Verpackung, gute Kommunikation – alles bestens bei DiGi Electronics.
Dec 02, 2025
商品到着が早く、丁寧な対応に感謝します。サポートも安心感があります。
Dec 02, 2025
Their support system is well-organized and highly effective.
Dec 02, 2025
The price advantage makes DiGi Electronics my preferred shopping destination.
Dec 02, 2025
The support team provided personalized assistance after my order.
Dec 02, 2025
Quality assurance is a top priority for DiGi Electronics, and it shows.
Dec 02, 2025
Even during peak times, the shipping remained impressively quick, and support was friendly and efficient.
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Frequently Asked Questions (FAQ)
Can the MIC37102BR be used in battery-powered wearable devices where input voltage drops close to the output level, and how does its dropout voltage impact runtime under load?
Yes, the MIC37102BR can be used in battery-powered wearables, but design caution is required near end-of-discharge. With a maximum dropout voltage of 0.5V at 1A, the input voltage must stay at least 0.5V above the desired output (e.g., 2.0V in for a 1.5V output). As batteries discharge—especially single-cell Li-ion dropping below 3.3V—operation may become unstable if the headroom is insufficient. To maximize runtime, consider lowering the load current or using a lower output voltage setting. Monitor thermal performance under sustained load, as elevated junction temperatures in the S-PAK-5 package can trigger thermal shutdown in poorly laid-out designs.
What are the key thermal design considerations when replacing an older MIC37102WR with the MIC37102BR in a high-ambient-temperature environment?
When replacing the MIC37102WR with the MIC37102BR in high-temperature environments (e.g., >85°C ambient), PCB thermal management becomes critical due to identical but significant power dissipation in linear regulators. Both versions share the same S-PAK-5 package and 1A rating, but the MIC37102BR’s thermal resistance requires adequate copper pour connected to the tab (exposed thermal pad equivalent) for heat dissipation. Use ≥4 thermal vias under the tab connected to a ground plane, and avoid placing near other heat-generating components. Even within the -40°C to 125°C operating range, junction temperature must stay below 150°C to prevent activation of the built-in over-temperature protection, which intermittently shuts down the device.
Is the MIC37102BR a reliable drop-in replacement for the MIC37102WR in existing designs, and are there any subtle differences that could cause unexpected field failures?
The MIC37102BR can generally serve as a mechanical and electrical replacement for the MIC37102WR, but caution is advised due to its obsolete status and RoHS non-compliance. While pinout, specs, and package are identical, the 'BR' suffix may indicate different raw material lots or packaging—potential red flags for long-term reliability in industrial or medical applications. Additionally, since the MIC37102BR is obsolete, supply chain risks are high; designs should ideally migrate to newer, compatible regulators. Always verify compatibility with your solder reflow profile, especially given MSL 3 (168-hour floor life), to avoid moisture-induced popcorning during rework or assembly.
How should I design the feedback network for output voltage adjustment with the MIC37102BR to avoid instability or drift over temperature?
To set the output voltage on the MIC37102BR (adjustable from 1.24V to 6V), use a precision resistor divider from VOUT to ADJ pin, referencing the 1.24V feedback threshold. Select 1% tolerance or better resistors to minimize drift; total resistor current should exceed 100µA to reduce noise sensitivity. Place the ADJ resistor divider close to the IC and keep the trace from ADJ to the divider node short and away from switching signals to avoid noise injection. For stable operation, ensure the output capacitor (typically 10µF or higher low-ESR ceramic or tantalum) is placed near the IC with minimal loop area. Avoid using high-capacitance values without verifying phase margin, as excessive capacitance combined with PCB inductance can lead to ringing or oscillation.
What are the risks of using the MIC37102BR in a modern design despite its RoHS non-compliance and obsolete status, especially for new product introduction (NPI)?
Using the MIC37102BR in a new product introduces significant regulatory and lifecycle risks. Its RoHS non-compliance restricts market access in the EU, China RoHS, and other regions requiring hazardous substance declarations. The 'Obsolete' status from Microchip signals end-of-life, meaning last-time buys and no long-term supply guarantees—posing DMS (Discontinued Part Management) risks. In high-reliability applications, second-sourcing or counterfeit parts become likely during production ramp. For NPI, strongly consider upgrading to a RoHS-compliant, active alternative with similar specs (e.g., TPS7A47 or LT1763-1.5), even if modifications are needed. If you must use MIC37102BR, validate a secure supply chain and document compliance exceptions for audit purposes.
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.
MIC37102BR CAD Models
Microchip Technology MIC37102BR PCB symbols & footprints
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