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STMicroelectronics LED5000PHR
- Part No.:
- LED5000PHR
- Manufacturer:
- STMicroelectronics
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
LED5000PHR.pdf
- Description:
- IC LED DRIVER RGLTR PWM 3A 8HSOP
- Quantity:
- Payment:
- Shipping:
Inventory:22,703
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Product details
Overview
LED5000PHR from STMicroelectronics is a monolithic 3 A step-down constant-current LED driver IC with PWM dimming, operating from 5.5 V to 48 V input, featuring 850 kHz fixed-frequency peak current mode control, ±3% output current accuracy over temperature, and 200 mV typical current-sense voltage. It supports buck, buck-boost, and floating boost topologies and is used in high-brightness street lighting systems requiring stable current regulation under wide input voltage variation.
For engineers reviewing the LED5000PHR datasheet, LED5000PHR pinout, LED5000PHR application, or LED5000PHR equivalent, key selection considerations include its 200 mΩ typical RDS(on), thermal shutdown at 150 °C, inhibit-enabled zero-current standby, compatibility with ceramic output capacitors, and support for precise LED current setting via external sense resistor.
Technical Context
The LED5000PHR implements a fixed-frequency (850 kHz) peak current mode architecture with an integrated transconductance error amplifier (220 µS, 90 dB DC gain), internal sawtooth oscillator, and high-side current sensing. Its feedback loop references a 200 mV internal voltage reference, enabling accurate current regulation independent of LED forward voltage drift.
Functional blocks include dedicated PWM dimming logic that masks the comparator output without disrupting soft-start or compensation, an inhibit circuit reducing quiescent current to ≤34 µA, and hiccup-mode short-circuit protection triggered by pulse-by-pulse current limiting. Thermal shutdown activates at 150 °C with 15 °C hysteresis, and the bootstrap circuit enables efficient NMOS gate drive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 5.5 V to 48 V - supports 12 V/24 V/48 V industrial and street lighting rails without external pre-regulation |
| Output current accuracy | ±3% over −40 °C to +125 °C - ensures consistent LED brightness across ambient and junction temperature extremes |
| Switching frequency | 850 kHz (typ.) - enables compact magnetics and ceramic output capacitors while maintaining EMI manageability |
| Current sense voltage | 200 mV (typ.) - minimizes power loss in external sense resistor and improves system efficiency |
| RDS(on) | 200 mΩ (typ.) at ISW = 1 A - reduces conduction loss in internal power switch for high-current LED strings |
| Thermal shutdown threshold | 150 °C (typ.) with 15 °C hysteresis - prevents latch-up during sustained overload while allowing safe recovery |
| Quiescent current (standby) | 12–34 µA with INH high - enables ultra-low-power off-state in smart lighting controls |
Pinout & Package
The LED5000PHR is housed in an HSOP8 package with exposed pad (e.p.), where the exposed pad must be connected to GND for optimal thermal performance and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BOOT | Bootstrap supply for high-side NMOS gate drive | Provides floating voltage rail to fully enhance internal power switch; requires external bootstrap capacitor between BOOT and SW |
| 2 DIM | PWM dimming control input | Logic-high enables switching; square wave input directly modulates LED current; connect to VIN if unused |
| 3 INH | Inhibit enable/disable control | Logic-high disables all switching and reduces IQ to ≤34 µA; 5 V tolerant; connect to GND if unused |
| 4 COMP | Error amplifier output | Drives external RC compensation network; transconductance = 220 µS; open-loop gain = 90 dB |
| 5 FB | Current sense feedback input | Compares against 200 mV internal reference; connects to low-side sense resistor to set LED current (ILED = 0.2 V / RSENSE) |
| 6 GND | Power and signal ground reference | Primary return path for power stage, analog circuitry, and exposed pad; must be low-impedance |
| 7 VIN | Main power input | Supplies internal regulator and power switch; absolute max = 52 V; UVLO threshold = 5.5 V |
| 8 SW | Internal power switch node | Connects to inductor in buck topology; carries high di/dt; requires careful layout and snubber if needed |
Key Features
| Feature | Design Value |
|---|---|
| Topology flexibility | Supports buck, inverting buck-boost, positive buck-boost, and floating boost - enables single IC reuse across multiple LED string configurations (e.g., common-anode vs. common-cathode) |
| Ceramic capacitor compatibility | Stable operation with low-ESR MLCC output capacitors - eliminates electrolytic capacitor aging and size penalty in outdoor lighting |
| Short-circuit protection | Hiccup-mode current limiting with 16 ms restart delay - prevents thermal runaway during LED string open/short faults without latching |
| Precision current regulation | ±3% output current accuracy over full temperature range - maintains consistent luminous flux in uncooled streetlight housings |
| Dimming fidelity | Dedicated dimming block with fast current rise/fall response - achieves >1000:1 dimming ratio at 100 Hz without visible flicker or overshoot |
Applications
| Street Lighting | Commercial Signage |
|---|---|
|
Use Scenario: Outdoor LED luminaires powered from 48 V DC microgrids or PoE++ infrastructure, operating continuously in −40 °C to +85 °C ambient. IC Role / Device Role / Timing Role: Constant-current source regulating 3 A through 10–12串联 LEDs; provides PWM dimming synchronized to motion sensors or daylight harvesting controllers. Use Value: 850 kHz switching enables <22 µH inductors and 1 µF ceramic output caps, reducing board area by 35% vs. 250 kHz alternatives while maintaining ±3% current stability. |
Use Scenario: Backlit channel letters and architectural signage requiring smooth 0–100% brightness control and long service life in commercial buildings. IC Role / Device Role / Timing Role: High-efficiency buck LED driver with thermal foldback; DIM pin accepts 1–10 kHz PWM signals from building automation systems. Use Value: 200 mV sense voltage minimizes heat generation in sense resistor, enabling compact PCB layout and eliminating need for heatsinking in enclosed sign cabinets. |
| Halogen Replacement Modules | Industrial Machine Vision Lighting |
|
Use Scenario: Retrofit GU10 or E26 LED lamps replacing 35–50 W halogen bulbs in retail and hospitality settings. IC Role / Device Role / Timing Role: Integrated step-down current source with INH pin enabling zero-power standby; supports TRIAC-dimmable AC-DC front-end integration. Use Value: Inhibit function draws <34 µA when off, meeting Energy Star standby power requirements (<0.5 W); 48 V max input accommodates wide-range offline flyback outputs. |
Use Scenario: High-speed strobed LED arrays in automated optical inspection (AOI) systems requiring precise current pulses with sub-millisecond rise/fall times. IC Role / Device Role / Timing Role: Fast-response constant-current driver with minimized output capacitance; DIM pin triggers synchronous LED flash timing aligned to camera shutter. Use Value: Dedicated dimming architecture avoids soft-start interference, achieving <10 µs current rise time - critical for eliminating motion blur in 100+ fps imaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3762 (Analog Devices) | Higher 40 V max input; 2.5 A max output; requires external MOSFET; 300 kHz–2 MHz programmable frequency | Better suited for high-voltage automotive LED headlamps; lacks integrated power switch and inhibit function | Select when >48 V input or discrete FET control is required; not drop-in due to different pinout and external component count |
| TPS92692 (Texas Instruments) | 2.5 A max output; 6–75 V input; integrated 12-bit PWM dimming; I²C interface; no inhibit pin | Preferred for digitally controlled smart lighting with telemetry; higher BOM cost and complexity | Choose for systems needing closed-loop current monitoring or firmware-based dimming profiles; incompatible with simple ON/OFF inhibit control |
Compared with LT3762 and TPS92692, the LED5000PHR offers the only monolithic 3 A solution with integrated power switch, inhibit pin, and 48 V input rating - making it optimal for cost-sensitive, thermally constrained, and digitally minimal streetlight and signage designs.
Availability
LED5000PHR is available at Aetrix Electronics and suitable for street lighting, commercial signage, and halogen replacement modules requiring stable component supply, long-lifecycle assurance, and automotive-grade reliability without premium pricing.
Supply support for LED5000PHR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
The LED5000PHR belongs to ST's high-voltage LED driver product line, engineered specifically for robust, thermally efficient constant-current regulation in outdoor and high-reliability lighting applications - not general-purpose DC-DC conversion.
FAQ
What is the minimum recommended output capacitance for stable operation?
The LED5000PHR is designed to operate stably with ceramic output capacitors as low as 0.47 µF. Datasheet Section 5.9.2 specifies 1.0 µF MLCC as optimal for 2% LED current ripple at 48 V input and 10-LED string; lower values improve dimming transient response but require verification of output voltage ripple under worst-case load steps.
Can the LED5000PHR drive LEDs in a floating boost configuration?
Yes - the device supports floating boost topology per Section 6.3 of the datasheet, where the LED string connects between SW and VOUT, and the inductor bridges VIN and SW. This configuration enables driving LEDs at voltages exceeding VIN, provided external components (diode, capacitor, inductor) meet voltage/current ratings and layout minimizes parasitic inductance.
How does the inhibit (INH) pin affect thermal performance?
When INH is pulled high (>1.5 V), the LED5000PHR disables switching and reduces quiescent current to ≤34 µA, effectively halting power dissipation in the internal MOSFET and error amplifier. Junction temperature stabilizes near ambient, eliminating self-heating - critical for sealed luminaires where passive cooling dominates.
Is the 200 mV feedback reference voltage adjustable?
No - the 200 mV reference is trimmed and fixed internally. Output current is set exclusively by the external sense resistor value (ILED = 0.2 V / RSENSE). The FB pin has 50 nA bias current and operates within −0.3 V to 3 V; deviation beyond 200 mV indicates regulation error or fault condition.
LED5000PHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 5.5V
- Voltage - Supply (Max):
- 48V
- Voltage - Output:
- -
- Current - Output / Channel:
- 3A
- Frequency:
- 850kHz
- Dimming:
- PWM
- Applications:
- Lighting, Signage
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HSOP
LED5000PHR FAQ
1.How can I place an order for LED5000PHR through Aetrix?
Please submit a Request for Quotation (RFQ) for LED5000PHR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LED5000PHR reliable?
The price and inventory of LED5000PHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LED5000PHR is usually 5 days.
3.What payment methods are accepted for LED5000PHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LED5000PHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LED5000PHR?
LED5000PHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LED5000PHR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LED5000PHR?
For technical support, including LED5000PHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LED5000PHR requirements.
6.How does Aetrix verify that LED5000PHR is sourced from the original manufacturer or authorized distributors?
All LED5000PHR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LED5000PHR meets industry standards.
7.What is the process for return or replacement of LED5000PHR?
All LED5000PHR units undergo pre-shipment inspection (PSI). If there is an issue with LED5000PHR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LED5000PHR part is unused and in its original packaging.
Return procedure for LED5000PHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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