Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
LM5150QURUMRQ1
Texas Instruments
1.5-V TO 42-V WIDE VIN, LOW IQ B
2380 Pcs New Original In Stock
Boost Regulator Positive Output Step-Up DC-DC Controller IC 16-WQFN (4x4)
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (466 Ratings)
LM5150QURUMRQ1
Product Overview
10159938
DiGi Electronics Part Number
LM5150QURUMRQ1-DGManufacturer
Texas Instruments
LM5150QURUMRQ1
Description
1.5-V TO 42-V WIDE VIN, LOW IQ BInventory
2380 Pcs New Original In Stock
Boost Regulator Positive Output Step-Up DC-DC Controller IC 16-WQFN (4x4)
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
LM5150QURUMRQ1 Technical Specifications
Category
Power Management (PMIC), DC DC Switching Controllers
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Output Type
Transistor Driver
Function
Step-Up
Output Configuration
Positive
Topology
Boost
Number of Outputs
1
Output Phases
1
Voltage - Supply (Vcc/Vdd)
1.5V ~ 42V
Frequency - Switching
220kHz ~ 2.3MHz
Duty Cycle (Max)
87%
Synchronous Rectifier
No
Clock Sync
Yes
Serial Interfaces
-
Control Features
Current Limit, Enable, Frequency Control
Operating Temperature
-40°C ~ 150°C (TJ)
Grade
Automotive
Qualification
AEC-Q100
Mounting Type
Surface Mount
Package / Case
16-WQFN Exposed Pad
Supplier Device Package
16-WQFN (4x4)
Base Product Number
LM5150
Datasheet & Documents
HTML Datasheet
LM5150QURUMRQ1-DG
Environmental & Export Classification
RoHS Status
Not applicable
Moisture Sensitivity Level (MSL)
2 (1 Year)
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-LM5150QURUMRQ1CT
296-LM5150QURUMRQ1TR
296-LM5150QURUMRQ1DKR
Standard Package
2,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
在Digit Electronics購物，不僅價格實惠，且運送速度快，整體體驗非常好！
Dec 02, 2025
Le rapport qualité-prix chez DiGi Electronics est exceptionnel, je recommande vivement.
Dec 02, 2025
Ich schätze die Zuverlässigkeit und die hohe Produktqualität bei DiGi Electronics sehr.“
Dec 02, 2025
Rapid shipping and long-lasting quality—nothing more I could ask for from a supplier.
Dec 02, 2025
Their support staff is knowledgeable and always responsive to inquiries.
Dec 02, 2025
Website security measures gave me confidence that my personal data was well protected during transactions.
Dec 02, 2025
Customer service at DiGi Electronics is consistently exceptional, making the buying process smooth.
Dec 02, 2025
Clear pricing policies help avoid unexpected costs.
Dec 02, 2025
Their competitive pricing makes electronics accessible, and delivery punctuality keeps my schedule intact.
Dec 02, 2025
I appreciate their swift dispatch and the excellent support after my purchase.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
What are the key design-in considerations when using the LM5150QURUMRQ1 in an automotive start-stop system with wide input voltage transients?
When designing the LM5150QURUMRQ1 into automotive start-stop applications, the primary concern is managing the wide VIN range (1.5V to 42V) during cranking events where battery voltage dips below 6V. Ensure the feedback resistors and enabling circuitry are stable across low-voltage conditions. Use a bias supply or auxiliary winding to maintain VCC above the 1.5V UVLO threshold during cold cranks. Additionally, verify that the frequency foldback feature engages appropriately under overload to prevent thermal stress in high-temperature environments up to 150°C junction temperature. A well-placed input capacitor bank (low ESR, ≥10µF) helps absorb transient energy and stabilizes operation during load dump recovery.
Can the LM5150QURUMRQ1 replace the LT3751 in a high-voltage LED driver design, and what are the critical trade-offs?
The LM5150QURUMRQ1 can serve as a cost-effective, AEC-Q100-qualified alternative to the LT3751 in automotive LED boost applications, but with important trade-offs. While both are controller ICs for boost topologies, the LT3751 integrates a current-sense amplifier optimized for constant-current LED regulation, whereas the LM5150QURUMRQ1 relies on external circuitry for current limiting and lacks dedicated LED dimming controls. To replace LT3751 successfully, implement precise current sensing using a shunt and comparator or op-amp feedback loop. Also, note the LM5150QURUMRQ1's max 87% duty cycle limits its use in very high step-up ratios – verify your required output voltage (e.g., >36V) is achievable without violating this constraint. Ensure switching frequency adjustment via RT resistor maintains EMI compliance similar to the original design.
How does the lack of synchronous rectification in the LM5150QURUMRQ1 impact efficiency in a high-load, continuous-conduction-mode boost converter?
The absence of synchronous rectification in the LM5150QURUMRQ1 means it drives an external MOSFET but relies on a diode (e.g., Schottky) for the return path, leading to significant conduction losses at high output currents. In continuous-conduction-mode (CCM) designs above 3A average inductor current, the diode's forward voltage drop (Vf) creates a direct efficiency penalty—losses scale with I_OUT × Vf. For example, a 0.5V Schottky drop at 4A results in 2W lost as heat. To mitigate, select ultra-low Vf, high-temperature-rated diodes and optimize thermal pad layout. Alternatively, consider interleaving or redesigning with a synchronous controller like the LM5143A-Q1 if efficiency above 90% is critical. Use the LM5150QURUMRQ1 where cost and simplicity outweigh peak efficiency needs.
What PCB layout practices are essential to minimize EMI when operating the LM5150QURUMRQ1 at switching frequencies above 1MHz?
Operating the LM5150QURUMRQ1 above 1MHz increases radiated and conducted EMI risk due to faster dI/dt and dV/dt edges. To reduce EMI, minimize the high-current loop area formed by the input capacitor, external MOSFET, and boost diode—place these components tightly around the 16-WQFN (4x4) package. Use a solid ground plane beneath the IC and avoid splits. Route the SW node (connected to inductor) as compact as possible and shield sensitive analog nodes (FB, RT, ILIM) with ground. Exploit the frequency spread capability (if available via RT modulation) or externally dither the RT resistor using a small RC filter to reduce spectral peaks. Include a 10nF ceramic capacitor close to VCC with short leads to suppress ringing. Follow TI's recommended thermal pad connection: stitch multiple vias under the pad to internal GND plane for heatsinking and noise control.
What reliability risks should be considered when using the LM5150QURUMRQ1 in underhood automotive applications near the upper temperature limit?
Deploying the LM5150QURUMRQ1 in underhood environments where junction temperatures approach 150°C requires careful thermal and stress management. Although rated for -40°C to 150°C (TJ) and AEC-Q100 qualified, long-term reliability degrades rapidly near Tj(max). Ensure thermal resistance (θJA) is minimized via proper PCB copper layout: tie the exposed pad to a large GND plane using an array of thermal vias. Derate power handling—avoid sustained operation above 135°C Tj. Also consider MSL 2 sensitivity: if the device is exposed to moisture, perform reflow within 1 year or bake per JEDEC standards to prevent popcorning. Use conformal coating in high-humidity conditions to reduce corrosion risk on exposed traces. Monitor temperature in real-time using external sensors if operating near thermal limits for safety-critical systems.
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.
LM5150QURUMRQ1 CAD Models
Texas Instruments LM5150QURUMRQ1 PCB symbols & footprints
productDetail
