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STMicroelectronics ALED6000PHTR
- Part No.:
- ALED6000PHTR
- Manufacturer:
- STMicroelectronics
- Category:
- LED Drivers
- Package:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ALED6000PHTR.pdf
- Description:
- IC LED DRVR CTRL PWM 3A 16HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:564
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Product details
Overview
ALED6000PHTR from STMicroelectronics is an AEC-Q100 Grade 1 qualified monolithic step-down LED driver IC designed for automotive high-power lighting applications. It delivers up to 3 A DC output current with 4.5 V to 61 V input range, 250 mΩ typical high-side RDS(on), adjustable switching frequency (250 kHz–1.5 MHz), and dedicated PWM dimming control via the DIM pin.
For engineers reviewing the ALED6000PHTR datasheet, ALED6000PHTR pinout, ALED6000PHTR application, or ALED6000PHTR equivalent, this device is selected for precise constant-current LED driving in demanding automotive environments where wide VIN, thermal robustness, synchronization capability, and ±3.2% output current accuracy are critical.
Technical Context
The ALED6000PHTR implements a voltage-mode, constant-frequency PWM controller with integrated N-channel high-side MOSFET and bootstrap gate drive. Its error amplifier compares FB voltage (0.250 V typ. reference) against sensed LED current via external RSENSE, generating COMP output that modulates duty cycle against a programmable sawtooth ramp.
It supports master/slave synchronization via SYNCH pin (180° phase shift), enables light-load efficiency optimization via VBIAS switchover (2.90 V threshold), and features pulse-by-pulse peak current limiting (adjustable via ILIM pin) with auto-recovery thermal shutdown at 170 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 3 A DC, ±3.2% accuracy - ensures consistent luminance across LED strings in automotive lighting. |
| Input Voltage Range | 4.5 V to 61 V - supports 12 V/24 V/48 V automotive battery systems including cold-crank and load-dump transients. |
| Switching Frequency | 250 kHz to 1.5 MHz (externally adjustable via FSW resistor) - enables compact magnetics and EMI optimization. |
| RDS(on) | 250 mΩ typ. at ILX = 0.5 A, TJ = 25 °C - reduces conduction loss and thermal stress in high-current operation. |
| Dimming Interface | Dedicated DIM pin with 1.23–1.70 V rising threshold - supports direct PWM dimming without external logic or level-shifting. |
| Quiescent Current | 2.4 mA typ. operating, 10 µA typ. shutdown - meets automotive low-power standby requirements. |
| Thermal Protection | Auto-recovery shutdown at 170 °C with 15 °C hysteresis - prevents thermal runaway during overtemperature events. |
Pinout & Package
Package: HTSSOP16 (exposed pad, thermally enhanced), RoHS-compliant, AEC-Q100 Grade 1 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBIAS | Auxiliary bias supply input | Improves light-load efficiency by powering analog circuitry from auxiliary rail; switchover threshold at 2.90 V. |
| VIN (pins 2,3) | Main power input | Accepts 4.5–61 V DC; dual pins reduce PCB trace resistance and thermal rise under 3 A load. |
| VCC | Internal regulator input | Bypassed with 1 µF ceramic capacitor; powers internal logic and references; UVLO threshold 4.10 V. |
| EN | Enable control | Active-high; internal pull-down ensures safe default-off state; compatible with 3.3 V/5 V logic. |
| SS | Soft-start timing node | Charged by 5 µA internal current source; sets monotonic startup ramp and inrush current limit. |
| SYNCH | Synchronization I/O | Master/slave clock interface; supports up to 5 devices; 180° phase shift prevents beat frequencies. |
| COMP | Error amplifier output | Connects external compensation network (Type II/III); drives PWM comparator ramp comparison. |
| FB | Feedback sensing input | Inverting input of error amp; referenced to 0.250 V internal bandgap; monitors LED current via RSENSE. |
| ILIM | Peak current limit setting | Pull-down resistor selects peak switch current (0.84 A typ. with 100 kΩ); protects against overload. |
| DIM | PWM dimming control | Accepts 0–5 V PWM signal; internal 2 µA pull-down enables direct microcontroller interfacing. |
| LX (pins 13,14) | Power switch node | Drives external inductor; dual pins reduce parasitic inductance and improve EMI performance. |
| BOOT | Bootstrap capacitor connection | 100 nF capacitor between BOOT–LX supplies gate drive for high-side MOSFET during off-time. |
| GND / E.P. | Signal and thermal ground | Exposed pad must be soldered to solid GND plane for thermal dissipation (RthJA = 40 °C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side N-MOSFET | 250 mΩ RDS(on) eliminates external switch and reduces BOM count while maintaining 3 A capability. |
| VBIAS switchover | Switches internal bias supply from VIN to VBIAS at 2.90 V, reducing IQ by >50% at light load. |
| Adjustable soft-start | Programmable via external CSS capacitor; prevents inrush current and ensures monotonic LED turn-on. |
| Synchronization support | Enables multi-device phase interleaving via SYNCH pin, lowering input RMS current and easing EMI filtering. |
| Digital PWM dimming | Dedicated DIM pin with 1.23–1.70 V threshold and 42 ms timeout enables flicker-free, microcontroller-driven brightness control. |
Applications
| Automotive Daytime Running Lights (DRL) | Automotive High/Low Beam Headlights |
|---|---|
|
Use Scenario: Constant-current driving of 6–12 white LED series in front-end DRL modules subjected to 12 V battery variations and ambient temperatures from −40 °C to +125 °C. IC Role / Device Role / Timing Role: Primary LED current regulator with integrated power switch, feedback loop, and thermal protection. Use Value: Delivers stable 1.5 A output with ±3.2% accuracy across temperature and input voltage, enabling uniform luminance without external current-sense amplifiers. |
Use Scenario: Dual-channel or sequential high-beam/low-beam control in adaptive front-lighting systems (AFS), requiring fast dimming response and robust transient handling. IC Role / Device Role / Timing Role: High-efficiency buck LED driver with synchronized switching and programmable current limit for beam pattern switching. Use Value: Adjustable fSW (up to 1.5 MHz) allows compact inductor selection; 12 μs minimum on-time supports high-VF LED stacks at low duty cycles. |
| Automotive Fog Lights | Automotive Position Lights & Turn Signals |
|
Use Scenario: Driving high-lumen fog lamps in harsh environments with frequent load-dump transients (up to 61 V) and high ambient heat. IC Role / Device Role / Timing Role: Automotive-grade constant-current source with auto-recovery thermal shutdown and wide-VIN operation. Use Value: 170 °C thermal shutdown with 15 °C hysteresis prevents latch-up; RDS(on) = 250 mΩ minimizes self-heating under continuous 3 A load. |
Use Scenario: Compact, cost-optimized position lamp and amber turn signal modules requiring PWM dimming and fast current ramp-up. IC Role / Device Role / Timing Role: Dimmable LED driver with dedicated DIM pin and <35 µs LED current rise time (measured at VIN = 44 V, 12 LEDs). Use Value: Short DIM pulse response (<42 ms timeout) enables precise flash timing; low 10 µA shutdown current meets OEM quiescent power budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current automotive LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL8862T-13 | Boost topology; max 1.5 A output; no integrated MOSFET; requires external high-side switch. | Designed for boost-based LED strings where VOUT > VIN; unsuitable for buck-only architectures like DRLs. | Select only when output voltage exceeds input (e.g., 12 V input → 48 V LED string); not drop-in for ALED6000PHTR's buck use cases. |
| TLC59621RHAT | 16-channel linear LED sink driver; max 120 mA/channel; no switching regulator; higher power loss at 3 A. | Targeted at low-power interior lighting with individual channel PWM; lacks thermal robustness for exterior lighting. | Use only for low-current, multi-zone interior lighting; cannot replace ALED6000PHTR in high-power exterior applications. |
Compared with AL8862T-13 and TLC59621RHAT, the ALED6000PHTR uniquely combines monolithic buck architecture, 3 A capability, AEC-Q100 Grade 1 qualification, and integrated synchronization-making it the only option for compact, efficient, and thermally resilient automotive exterior lighting designs.
Availability
ALED6000PHTR is available at Aetrix Electronics and suitable for automotive exterior lighting, daytime running lights, and high/low beam headlight systems requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for ALED6000PHTR 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, Switzerland, specializing in automotive, industrial, and power management ICs with broad manufacturing and quality certifications.
The ALED6000 product line is engineered specifically for high-reliability automotive LED lighting, emphasizing wide-input operation, thermal resilience, synchronization, and AEC-Q100 Grade 1 compliance for exterior lighting systems.
FAQ
What is the recommended layout practice for the exposed thermal pad of ALED6000PHTR?
The exposed pad (E.P.) must be soldered to a solid, low-impedance PCB ground plane using ≥4 thermal vias (0.3 mm diameter, spaced ≤1 mm apart) filled with solder. This achieves the specified RthJA of 40 °C/W and prevents thermal derating above 125 °C junction temperature. Avoid floating or undersized pads, which cause premature thermal shutdown.
How does the VBIAS pin improve efficiency at light load?
VBIAS supplies internal analog circuitry independently from VIN, reducing quiescent current from 2.4 mA (VIN-only) to 1.0–1.3 mA (with VBIAS = 3.3 V). The switchover occurs at 2.90 V, and VBIAS must be stable and bypassed with 1 µF ceramic; improper routing causes instability or no efficiency gain.
Can multiple ALED6000PHTR devices synchronize without a master clock generator?
Yes - up to five ALED6000PHTR ICs can self-synchronize by connecting their SYNCH pins together. The device with the highest programmed fSW (via FSW resistor) automatically becomes master; others lock to its frequency with 180° phase shift, eliminating beat noise and reducing input capacitor RMS current.
What is the minimum output capacitor value recommended for optimal dimming performance?
For fastest LED current rise/fall times and minimal overshoot, minimize COUT while meeting ripple and stability requirements - typically 10–22 µF X7R ceramic. Oversized capacitors (>47 µF) increase inductor peak current and cause oscillation during dimming transitions, degrading PWM fidelity per Figure 11 in DS13018.
ALED6000PHTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 61V
- Voltage - Output:
- -
- Current - Output / Channel:
- 3A
- Frequency:
- 250kHz ~ 1.5MHz
- Dimming:
- PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-HTSSOP
ALED6000PHTR FAQ
1.How can I place an order for ALED6000PHTR through Aetrix?
Please submit a Request for Quotation (RFQ) for ALED6000PHTR 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 ALED6000PHTR reliable?
The price and inventory of ALED6000PHTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ALED6000PHTR is usually 5 days.
3.What payment methods are accepted for ALED6000PHTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ALED6000PHTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ALED6000PHTR?
ALED6000PHTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ALED6000PHTR 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 ALED6000PHTR?
For technical support, including ALED6000PHTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ALED6000PHTR requirements.
6.How does Aetrix verify that ALED6000PHTR is sourced from the original manufacturer or authorized distributors?
All ALED6000PHTR 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 ALED6000PHTR meets industry standards.
7.What is the process for return or replacement of ALED6000PHTR?
All ALED6000PHTR units undergo pre-shipment inspection (PSI). If there is an issue with ALED6000PHTR, 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 ALED6000PHTR part is unused and in its original packaging.
Return procedure for ALED6000PHTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ALED6000PHTR Tags
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