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PQ1U331M2ZP
Sharp Microelectronics
IC REG LINEAR 3.3V 150MA SOT23-5
3161 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
- (407 Ratings)
PQ1U331M2ZP
Product Overview
7923725
DiGi Electronics Part Number
PQ1U331M2ZP-DGManufacturer
Sharp Microelectronics
PQ1U331M2ZP
Description
IC REG LINEAR 3.3V 150MA SOT23-5Inventory
3161 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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PQ1U331M2ZP 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)
16V
Voltage - Output (Min/Fixed)
3.3V
Voltage - Output (Max)
-
Voltage Dropout (Max)
0.4V @ 150mA
Current - Output
150mA
Current - Quiescent (Iq)
200 µA
PSRR
70dB (400Hz)
Control Features
Enable
Protection Features
Over Current, Over Temperature
Operating Temperature
-30°C ~ 80°C
Mounting Type
Surface Mount
Package / Case
SC-74A, SOT-753
Supplier Device Package
SOT-23-5
Base Product Number
PQ1U
Datasheet & Documents
HTML Datasheet
PQ1U331M2ZP-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
425-1699-2
425-1699-1
Standard Package
3,000
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
La logistique de leur entreprise est un vrai atout, avec des notifications de suivi précises.
December 02, 2025
予算内で高品質な商品を求めている方にお勧めします。
December 02, 2025
I find their prices to be very reasonable, especially considering the quality of their offerings.
December 02, 2025
They offer competitive prices and a welcoming service that makes tech shopping enjoyable.
December 02, 2025
Affordable prices combined with excellent support make them a top choice.
December 02, 2025
The loading speed of the website is impressive, even during peak hours.
December 02, 2025
Their pricing makes it cost-effective for our company to buy in large quantities.
December 02, 2025
Thanks to their reasonable prices and friendly team, tech shopping has never been easier.
December 02, 2025
Their shipping speed outperforms many competitors, and the products are known for their toughness.
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Frequently Asked Questions (FAQ)
Can I use the PQ1U331M2ZP linear regulator as a drop-in replacement for the LP2992IM5X-3.3/NOPB in a low-noise sensor interface circuit, and what design risks should I consider given the PQ1U331M2ZP is now obsolete?
While the PQ1U331M2ZP and LP2992IM5X-3.3/NOPB share similar 3.3V fixed output and SOT-23-5 packages, direct substitution carries risks due to differences in quiescent current (200 µA vs. 75 µA) and PSRR performance. The PQ1U331M2ZP’s higher IQ may impact battery life in always-on sensor nodes, and although its 70dB PSRR at 400Hz is strong, it may not match the LP2992’s superior high-frequency noise rejection. Additionally, since the PQ1U331M2ZP is obsolete, long-term supply chain reliability is compromised—consider qualifying the LP2992 or a modern alternative like the TLV755P for new designs to avoid future redesigns.
What are the thermal and layout considerations when using the PQ1U331M2ZP near its 150mA load limit in a compact PCB design with limited copper pour?
Operating the PQ1U331M2ZP at or near 150mA with a high input voltage (e.g., 12V to 3.3V) results in significant power dissipation (up to 1.3W), which can cause thermal shutdown in SOT-23-5 without adequate thermal relief. The junction-to-ambient thermal resistance (θJA) is high in this package, so you must maximize the ground plane connection on pin 2 and use multiple vias to a bottom-layer copper pour. Avoid placing heat-sensitive components nearby, and validate thermal performance with IR imaging or thermocouples under worst-case ambient conditions (80°C). Consider derating output current if thermal management is constrained.
Is the PQ1U331M2ZP suitable for powering a microcontroller in a battery-powered IoT device, and how does its quiescent current compare to modern alternatives like the MIC5207-3.3YM5-TR?
The PQ1U331M2ZP’s 200 µA quiescent current makes it poorly suited for ultra-low-power IoT applications where sleep currents are often <10 µA. In contrast, the MIC5207-3.3YM5-TR draws only 20 µA typical, extending battery life significantly in duty-cycled systems. While the PQ1U331M2ZP includes enable functionality, its higher IQ undermines power savings during idle states. For new low-power designs, prefer modern regulators with <50 µA IQ; if already using the PQ1U331M2ZP, ensure the enable pin is actively controlled to disable the regulator during deep sleep, but recognize this adds complexity and may not fully offset its inefficiency.
Can the PQ1U331M2ZP safely replace the SPX5205M5-L-3-3/TR in an industrial control board operating at 70°C ambient, and what reliability factors should be evaluated?
Replacing the SPX5205M5-L-3-3/TR with the PQ1U331M2ZP in a 70°C industrial environment is risky despite both being 3.3V/150mA regulators. The PQ1U331M2ZP has a lower max operating temperature (80°C vs. 125°C for the SPX5205) and lacks the latter’s robust over-temperature hysteresis, increasing the chance of thermal cycling and premature failure under sustained load. Additionally, the PQ1U331M2ZP is obsolete and non-RoHS, raising compliance and sourcing concerns for industrial applications. If replacement is unavoidable, implement external current limiting and monitor junction temperature closely—but for long-term reliability, migrate to a qualified industrial-grade alternative like the TPS7B6933.
What input voltage and bypass capacitor selection criteria should I follow when designing with the PQ1U331M2ZP to ensure stability and minimize output noise in a mixed-signal PCB?
To ensure stability with the PQ1U331M2ZP, use a 1µF ceramic input capacitor placed within 5mm of the IC, and a 1µF ceramic output capacitor with X5R or X7R dielectric and low ESR (<0.5Ω). Avoid tantalum or high-ESR capacitors, which can cause oscillation. The input voltage must stay below 16V and above 3.7V (3.3V + 0.4V dropout) under full load. For noise-sensitive analog circuits, add a 10Ω resistor in series with the input capacitor to form a low-pass filter, reducing high-frequency ripple. Note that the PQ1U331M2ZP lacks explicit noise specifications beyond PSRR, so verify performance with bench testing if powering ADCs or PLLs directly.
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.
PQ1U331M2ZP CAD Models
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