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MIC5247-1.85YM5-TR
Microchip Technology
IC REG LIN 1.85V 150MA SOT23-5
3261 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 150mA SOT-23-5
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5.0 / 5.0
- (420 Ratings)
MIC5247-1.85YM5-TR
Product Overview
1380425
DiGi Electronics Part Number
MIC5247-1.85YM5-TR-DGManufacturer
Microchip Technology
MIC5247-1.85YM5-TR
Description
IC REG LIN 1.85V 150MA SOT23-5Inventory
3261 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 150mA SOT-23-5
Quantity
Minimum 1
Minimum 1
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Warranty & Returns
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MIC5247-1.85YM5-TR Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Output Configuration
Positive
Output Type
Fixed
Number of Regulators
1
Voltage - Input (Max)
6V
Voltage - Output (Min/Fixed)
1.85V
Voltage - Output (Max)
-
Voltage Dropout (Max)
0.15V @ 150mA
Current - Output
150mA
Current - Quiescent (Iq)
150 µA
PSRR
50dB (1kHz)
Control Features
Enable
Protection Features
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SC-74A, SOT-753
Supplier Device Package
SOT-23-5
Base Product Number
MIC5247
Datasheet & Documents
HTML Datasheet
MIC5247-1.85YM5-TR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
MIC5247185YM5TR
576-2793-6
576-2793-1
576-2793-2
MIC5247-1.85YM5TR
MIC5247-1.85YM5TR-DG
1611-MIC5247-1.85YM5-DKRINACTIVE
1611-MIC5247-1.85YM5-DKR
MIC5247-1.85YM5 TR-DG
1611-MIC5247-1.85YM5-DKR-DG
1611-MIC5247-1.85YM5-CT
MIC5247-1.85YM5 TR
Standard Package
3,000
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
고객 서비스 센터의 응대가 훌륭해서 재구매 의사가 생겼어요.
Dec 02, 2025
Their delivery speed makes online shopping with them a pleasure.
Dec 02, 2025
Their support team helped me troubleshoot issues remotely, saving me time and avoiding the need for on-site support.
Dec 02, 2025
The staff at DiGi Electronics are always polite and very knowledgeable.
Dec 02, 2025
The delivery was so fast that it felt almost instant—very satisfying.
Dec 02, 2025
Every order from DiGi Electronics arrives with the same excellent quality, never varying.
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Frequently Asked Questions (FAQ)
When designing in the MIC5247-1.85YM5-TR, how can I ensure stable operation under varying load conditions without adding external compensation components?
The MIC5247-1.85YM5-TR is internally compensated, which simplifies design-in by eliminating the need for external compensation components. However, to maintain stability across dynamic load conditions—especially near the 150mA output limit—use a minimum 1µF ceramic output capacitor with low ESR (≤30mΩ). Place the capacitor as close as possible to the VOUT and GND pins to minimize PCB trace inductance, which helps prevent ringing or oscillation during fast load transients. Avoid tantalum or high-ESR capacitors, as they may degrade transient response and stability despite meeting capacitance requirements.
Can the MIC5247-1.85YM5-TR be used as a drop-in replacement for the AP2111A-1.85Y in a space-constrained wearable device, and what are the key differences to watch for?
While both the MIC5247-1.85YM5-TR and AP2111A-1.85Y offer 1.85V fixed output in SOT-23-5 packages, they are not exact drop-in replacements. The MIC5247-1.85YM5-TR has a tighter dropout voltage (150mV at 150mA vs. ~200mV) and superior PSRR (50dB at 1kHz), making it better suited for noise-sensitive applications. However, the AP2111A typically features lower quiescent current (50µA vs. 150µA), which impacts battery life in ultra-low-power modes. Verify enable logic compatibility—the MIC5247-1.85YM5-TR's active-high enable may require circuit changes if replacing a device with active-low enable. Always validate thermal performance under sustained load due to higher Iq.
What are the thermal risks when operating the MIC5247-1.85YM5-TR at 150mA output in a small-PCB wearable application with no airflow?
Operating the MIC5247-1.85YM5-TR at full 150mA output in a confined, no-airflow environment risks thermal shutdown due to power dissipation. For example, with a 5V input and 1.85V output, the dropout voltage is 3.15V, resulting in ~472.5mW of power dissipation. In a SOT-23-5 package with ~200°C/W thermal resistance, this can cause a junction temperature rise of ~94.5°C above ambient. At 85°C ambient, the junction could reach ~180°C—exceeding the 125°C limit. Mitigate this by reducing input voltage, using pulsed loads instead of continuous, adding thermal vias under the GND pad, or selecting a higher-efficiency switching regulator for high Vin-to-Vout ratios.
How does the MIC5247-1.85YM5-TR handle brownout conditions in battery-powered systems, and is external monitoring still needed?
The MIC5247-1.85YM5-TR includes under-voltage lockout (UVLO) that disables the regulator when VIN falls below ~2.3V, preventing erratic behavior during battery brownout. However, UVLO does not monitor VOUT directly, so output voltage may sag before shutdown. For mission-critical loads (e.g., microcontrollers or sensors), supplement the MIC5247-1.85YM5-TR with an external voltage supervisor or use a system controller with battery monitoring. Additionally, when battery voltage approaches dropout (VIN < ~2.0V), efficiency drops sharply—consider pairing with a power state manager to initiate graceful shutdown prior to UVLO trigger.
In what scenarios should I avoid using the MIC5247-1.85YM5-TR despite its low dropout and small footprint?
Avoid the MIC5247-1.85YM5-TR in high-input-voltage-to-output scenarios (e.g., VIN > 4V stepping down to 1.85V at >100mA) due to excessive power dissipation and thermal stress, even with good PCB layout. It's also unsuitable for applications requiring ultra-low quiescent current (<50µA), such as always-on sensor nodes running on coin cells, because its 150µA Iq accelerates battery drain. Additionally, avoid it in high-noise environments where PSRR beyond 1kHz is critical—while the MIC5247-1.85YM5-TR offers 50dB at 1kHz, performance degrades above 10kHz. In these cases, consider a higher-PSRR LDO like TPS7A20 or a buck converter for better efficiency.
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.
MIC5247-1.85YM5-TR CAD Models
Microchip Technology MIC5247-1.85YM5-TR PCB symbols & footprints
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