Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
LP38692MP-3.3/NOPB
Texas Instruments
IC REG LINEAR 3.3V 1A SOT223-5
18547 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 1A SOT-223-5
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (39 Ratings)
LP38692MP-3.3/NOPB
Product Overview
1287649
DiGi Electronics Part Number
LP38692MP-3.3/NOPB-DGManufacturer
Texas Instruments
LP38692MP-3.3/NOPB
Description
IC REG LINEAR 3.3V 1A SOT223-5Inventory
18547 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 1A SOT-223-5
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
LP38692MP-3.3/NOPB Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Output Configuration
Positive
Output Type
Fixed
Number of Regulators
1
Voltage - Input (Max)
10V
Voltage - Output (Min/Fixed)
3.3V
Voltage - Output (Max)
-
Voltage Dropout (Max)
1V @ 1A
Current - Output
1A
Current - Quiescent (Iq)
55 µA
Current - Supply (Max)
100 µA
PSRR
55dB (120Hz)
Control Features
-
Protection Features
Over Temperature
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
TO-261-5, TO-261AB
Supplier Device Package
SOT-223-5
Base Product Number
LP38692
Datasheet & Documents
HTML Datasheet
LP38692MP-3.3/NOPB-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
LP38692MP-3.3TR-NDR
LP38692MP-3.3/NOPBDKR
LP38692MP-3.3/NOPBCT
LP38692MP-3.3/NOPBTR
*LP38692MP-3.3/NOPB
-LP38692MP-3.3-NDR
LP38692MP-3.3CT-NDR
LP38692MP33NOPB
Standard Package
1,000
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Très efficace, leur processus d'expédition me permet de planifier sereinement.
de desembre 02, 2025
Ich schätze die langlebige Qualität der Produkte von Di Digi Electronics sehr und die Unterstützung nach dem Kauf ist top.
de desembre 02, 2025
The shipping process was smooth, and the environmentally friendly packaging stood out.
de desembre 02, 2025
DiGi's pricing structure is very transparent and fair, which I appreciate.
de desembre 02, 2025
Their staff is knowledgeable and always ready to assist, which sets DiGi apart.
de desembre 02, 2025
Fast shipping and attentive after-sales service—highly recommend this store.
de desembre 02, 2025
The after-sales support from DiGi Electronics is outstanding; their team responds promptly and provides professional assistance whenever we face issues.
de desembre 02, 2025
I am impressed with the quick turnaround in addressing my support requests.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
Can the LP38692MP-3.3/NOPB safely replace an LM1117-3.3 in a legacy 5V-to-3.3V design without requiring board modifications or thermal redesign?
The LP38692MP-3.3/NOPB can electrically replace the LM1117-3.3 in many 5V-to-3.3V applications due to its similar 1A output current and fixed 3.3V output, but thermal performance differs significantly. With a lower quiescent current (55 µA vs. ~5–10 mA for LM1117) and better PSRR, the LP38692MP-3.3/NOPB runs cooler under light loads. However, at full 1A load with a 5V input, power dissipation is ~1.7W, which demands proper copper pour and thermal vias on the SOT-223-5 package—similar to LM1117. Verify junction temperature using θJA (~60°C/W on standard PCB) and ensure it stays below 125°C. If the original LM1117 design had marginal heatsinking, the LP38692MP-3.3/NOPB may still overheat without layout improvements.
What are the key reliability risks when using the LP38692MP-3.3/NOPB in industrial environments with ambient temperatures near 85°C and frequent load transients?
At 85°C ambient, the LP38692MP-3.3/NOPB’s maximum junction temperature (125°C) leaves only a 40°C margin, making thermal management critical—especially during 1A transient loads. The device lacks current limiting or short-circuit protection, so sustained overloads can cause thermal runaway despite the built-in over-temperature shutdown. Additionally, repeated thermal cycling from load transients may fatigue solder joints on the SOT-223-5 package over time. Mitigate this by derating output current above 70°C (e.g., limit to ~600 mA at 85°C), adding input/output bulk capacitance to reduce transient stress, and ensuring robust PCB copper area for heat spreading. Consider a regulator with integrated current limit (e.g., TPS7A3301) if fault tolerance is required.
How does the dropout voltage of the LP38692MP-3.3/NOPB compare to modern low-dropout regulators like the TPS79933, and what input voltage margin should I design for in battery-powered systems?
The LP38692MP-3.3/NOPB has a relatively high dropout voltage of 1V at 1A, whereas the TPS79933 offers ~250 mV dropout under the same conditions. This means the LP38692MP-3.3/NOPB requires a minimum input of 4.3V to maintain regulation at full load, while the TPS79933 operates down to ~3.55V. In battery-powered systems (e.g., Li-ion dropping to 3.5V), the LP38692MP-3.3/NOPB will cease regulation prematurely, shortening usable battery life. Design with at least 4.5V input headroom during peak loads to account for line resistance and transient dips. If extended battery runtime is critical, consider replacing the LP38692MP-3.3/NOPB with a true LDO like the TPS79933 or AP2112K-3.3.
Is the LP38692MP-3.3/NOPB suitable for noise-sensitive analog circuits like ADC reference rails, given its 55dB PSRR at 120Hz?
While the LP38692MP-3.3/NOPB’s 55dB PSRR at 120Hz is adequate for general digital logic, it may be insufficient for precision analog circuits such as 16-bit ADC reference rails, where power supply noise directly impacts SNR. PSRR degrades significantly above 1kHz (not specified in datasheet), leaving higher-frequency switcher noise unattenuated. For sensitive applications, add a pi-filter (LC or RC) before the LP38692MP-3.3/NOPB and use a dedicated low-noise LDO (e.g., LT3042 or TPS7A20) for the reference rail. Alternatively, if space allows, bypass the LP38692MP-3.3/NOPB with a high-value ceramic capacitor (10µF X7R) close to the load to improve high-frequency rejection.
Can I parallel two LP38692MP-3.3/NOPB regulators to increase output current beyond 1A, and what are the stability and current-sharing risks?
Paralleling LP38692MP-3.3/NOPB devices is not recommended due to lack of current-sharing features and tight output voltage tolerances (±2% typical). Even minor mismatches in output voltage can cause one regulator to carry most of the load, leading to thermal imbalance and potential overload. Without ballast resistors or active current sharing, one device may exceed its 1A limit while the other remains underutilized. Additionally, the feedback loop of each regulator operates independently, risking instability or oscillation under dynamic loads. For >1A requirements, use a single higher-current regulator like the TPS7A4700 (1A with better noise) or a switching regulator such as the TPS54332. If you must parallel, add 0.1–0.2Ω ballast resistors in series with each output and ensure identical thermal coupling—but this still doesn’t guarantee reliability.
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.
LP38692MP-3.3/NOPB CAD Models
Texas Instruments LP38692MP-3.3/NOPB PCB symbols & footprints
productDetail
