Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
LED2001PHR
STMicroelectronics
IC LED DRIVER RGLTR PWM 4A 8HSOP
2635 Pcs New Original In Stock
LED Driver IC 1 Output DC DC Regulator Step-Down (Buck) PWM Dimming 4A 8-HSOP
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (74 Ratings)
LED2001PHR
Product Overview
8176304
DiGi Electronics Part Number
LED2001PHR-DGManufacturer
STMicroelectronics
LED2001PHR
Description
IC LED DRIVER RGLTR PWM 4A 8HSOPInventory
2635 Pcs New Original In Stock
LED Driver IC 1 Output DC DC Regulator Step-Down (Buck) PWM Dimming 4A 8-HSOP
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
LED2001PHR Technical Specifications
Category
Power Management (PMIC), LED Drivers
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Type
DC DC Regulator
Topology
Step-Down (Buck)
Internal Switch(s)
Yes
Number of Outputs
1
Voltage - Supply (Min)
3V
Voltage - Supply (Max)
18V
Voltage - Output
-
Current - Output / Channel
4A
Frequency
850kHz
Dimming
PWM
Applications
Lighting, Signage
Operating Temperature
-40°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width) Exposed Pad
Supplier Device Package
8-HSOP
Base Product Number
LED2001
Datasheet & Documents
Design Resources
Development Tool Selector
HTML Datasheet
LED2001PHR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
-497-13825-2
-497-13825-1
497-13825-6
-497-13825-6
497-13825-1
497-13825-2
Standard Package
2,500
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
Delivery logistics were perfect, arriving right on time.
December 02, 2025
Impressed with how eco-conscious their packaging is—it's a big plus for me.
December 02, 2025
Their rapid shipping and attentive support team make them stand out in the electronics industry.
December 02, 2025
Every time I order, I receive my items within 48 hours, which is crucial for my urgent repairs.
December 02, 2025
Delivery was punctual, and I appreciated the competitive prices.
December 02, 2025
DiGi Electronics’ shipping punctuality is remarkable and has helped me maintain my project timelines.
December 02, 2025
The shopping experience is consistently smooth, thanks to the well-maintained website.
December 02, 2025
I appreciated that my order was dispatched within hours of purchase.
December 02, 2025
Safe packaging is clearly a priority, which I greatly appreciate as a customer.
December 02, 2025
The site’s layout helps me keep track of my shopping progress easily.
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 LED2001PHR safely drive high-brightness LED strings in outdoor signage applications with wide temperature swings, and what thermal design considerations are critical to avoid premature failure?
Yes, the LED2001PHR is rated for junction temperatures from -40°C to 150°C, making it suitable for outdoor signage. However, due to its 8-HSOP package with an exposed pad, effective PCB thermal management is essential—use a solid ground plane under the exposed pad with multiple vias to dissipate heat. Without proper layout, localized hot spots can degrade efficiency and reduce MTBF, especially at 4A output current. Always validate thermal performance under worst-case ambient conditions using infrared imaging or thermocouples on the IC case.
What are the key risks when replacing the LED2001PHR with the TPS92551TZ/NOPB in an existing buck LED driver design, particularly regarding switching frequency and dimming behavior?
While the TPS92551TZ/NOPB is a listed substitute, it operates at 1.2MHz versus the LED2001PHR’s 850kHz, which may cause EMI issues or require redesign of input/output filtering. Additionally, the TPS92551 uses analog/PWM hybrid dimming with different PWM input thresholds and response latency, potentially affecting dimming linearity in precision lighting systems. Always verify compatibility of the feedback loop compensation and ensure the replacement meets your system’s dimming frequency range (typically 100Hz–20kHz for signage) to avoid flicker or instability.
How does the LED2001PHR handle input voltage transients above 18V, such as those seen in automotive jump-start or load-dump scenarios, and what external protection is recommended?
The LED2001PHR has a maximum supply voltage of 18V; exceeding this—even briefly—can damage the internal switch and control circuitry. In automotive or industrial environments prone to voltage spikes, add a TVS diode (e.g., SMAJ15A) at the input and consider a series Schottky diode for reverse-polarity protection. For load-dump events (up to 40V), use a front-end buck pre-regulator or active clamp circuit to keep Vin within safe limits, as relying solely on passive clamping may not respond fast enough to protect the IC.
Is the LED2001PHR suitable for dimming at very low duty cycles (below 1%) in architectural lighting applications, and how does its PWM input stage affect dimming resolution and stability?
The LED2001PHR supports PWM dimming down to <1% duty cycle, but achieving stable, flicker-free operation requires careful signal conditioning. Its PWM input has a typical turn-on threshold of 1.2V, so ensure your controller outputs a clean, sharp-edge signal with minimal rise/fall time. At ultra-low dimming levels, parasitic capacitance or ground bounce can cause erratic switching—use a dedicated low-noise ground return for the PWM signal and keep trace lengths short. Also, confirm that your microcontroller or dimmer can sustain consistent timing at high frequencies (e.g., 10kHz) to maintain resolution without introducing visible flicker.
What layout practices are essential when designing a high-current (4A) buck converter with the LED2001PHR to minimize EMI and ensure stable regulation, especially in compact LED driver modules?
Critical layout steps include minimizing the high-di/dt loop formed by the input capacitor, IC, and inductor—place the input ceramic capacitor (≥10µF, low-ESR) as close as possible to the VIN and GND pins. Use a single-point star ground for power and control sections, and connect the exposed thermal pad directly to a solid ground plane with 6–9 thermal vias. Keep SW node traces short and avoid routing sensitive analog lines (like FB) near it. These practices reduce radiated EMI and prevent feedback noise that could cause output ripple or instability, particularly important in densely packed LED modules where crosstalk is a common failure mode.
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.
LED2001PHR CAD Models
STMicroelectronics LED2001PHR PCB symbols & footprints
productDetail
