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Semtech Corporation SC5010HULTRT-01
- Part No.:
- SC5010HULTRT-01
- Manufacturer:
- Semtech Corporation
- Category:
- LED Drivers
- Package:
- 28-UFQFN Exposed Pad
- Datasheet:
-
SC5010HULTRT-01.pdf
- Description:
- IC LED DRVR CTRL PWM 30MA 28MLPQ
- Quantity:
- Payment:
- Shipping:
Inventory:3,821
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Product details
Overview
SC5010HULTRT-01 from Semtech is an 8-channel high-efficiency boost LED driver IC for LCD backlighting, featuring I²C interface, phase-shifted PWM dimming (100 Hz–30 kHz), ±1% current matching across strings, up to 50 mA per string, and programmable switching frequency (200 kHz–2.2 MHz). It operates from 4.5 V to 27 V input and supports up to 50 V output for driving multi-string LED arrays in space-constrained portable displays.
For engineers reviewing the SC5010HULTRT-01 datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, exact pin functions, real-world dimming linearity data, thermal performance under load, and validated alternative drivers for notebook, tablet, and monitor backlight designs.
Technical Context
The SC5010HULTRT-01 integrates a current-mode boost controller with internal compensation and eight matched linear current sinks. Its control loop dynamically minimizes output voltage while maintaining ±2% LED current accuracy and enables ultra-fast transient response without external compensation components.
It implements string-by-string phase-shifted PWM dimming to reduce input/output capacitance demand and EMI, supports synchronization to external VSYNC/HSYNC signals (30 Hz–100 kHz), and provides true load disconnect via optional external p-MOSFET driven by DRVP pin with inrush limiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4.5 V to 27 V - powers directly from battery or DC adapter rails in portable systems without pre-regulation. |
| VOUT Capability | Up to 50 V - supports 6–10 series LEDs per string at typical forward voltages (e.g., 6P10S configuration). |
| LED Current per String | 10 mA to 50 mA - set precisely via external ISET resistor; ±1% matching ensures uniform backlight luminance. |
| PWM Dimming Frequency | 100 Hz to 30 kHz - avoids audible noise and enables flicker-free operation; resolution selectable as 9 or 10 bits. |
| Switching Frequency | 200 kHz to 2.2 MHz - adjustable via FSET resistor; higher frequencies allow smaller inductors and reduced board area. |
| Thermal Resistance θJA | 30 °C/W - measured on 4-layer FR4 PCB with thermal vias; enables stable operation up to +85 °C ambient. |
| Fault Protection | Open/short LED detection, OVP (programmable), UVLO, OTP (150 °C shutdown with 10 °C hysteresis), and latched FLT output. |
Pinout & Package
SC5010HULTRT-01 is housed in a thermally enhanced 4 mm × 4 mm × 0.6 mm MLPQ-UT-28 (QFN) package with exposed thermal pad tied to AGND. The 28-pin layout supports compact layout for high-density backlight driver designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (28) | Input power supply | Accepts 4.5–27 V; requires ≥4.7 µF ceramic bypass capacitor to PGND for stability. |
| VCC (1) | Bias supply | 4.5–5.5 V internal logic rail; requires ≥1 µF ceramic bypass to AGND. |
| EN (2) | Enable control | Logic-high (>2.1 V) enables device; logic-low (<0.8 V) reduces ICC to <1 µA in shutdown. |
| IO1–IO8 (15–22) | LED current sink outputs | Eight regulated cathode-side sinks; each supports up to 50 mA; grounded to disable unused strings. |
| DRVN (26) | n-MOSFET gate drive | Drives external boost switch; 1 A sink/source capability; RDRVN = 2–5 Ω ensures fast turn-on/off. |
| DRVP (27) | p-MOSFET gate drive | Enables true load disconnect and inrush limiting; clamps at VIN − VDRVP (5–8 V). |
| ISET (12) | Current programming | Resistor-to-ground sets nominal LED current (e.g., 32.4 kΩ → 40 mA); VISET = 1.23 V reference. |
| PWMI (14) | PWM dimming input | Accepts 100 Hz–30 kHz square wave; determines dimming duty cycle and resolution (9/10-bit). |
| SCL/SDA (10/11) | I²C interface | Standard 400 kHz I²C bus; supports register-based analog dimming (5-bit IDAC), fault status readback, and PLL sync control. |
| FLT (13) | Fault status output | Open-drain active-low signal indicating open/short LED, OVP, OTP, or SCP; latched until EN/VCC/UVLO cycled. |
Key Features
| Feature | Design Value |
|---|---|
| Phase-shifted PWM dimming | Reduces peak input current by up to 8× and cuts EMI by distributing switching edges across 8 channels (6.25 µs inter-string delay at 20 kHz). |
| Ultra-fast transient response | No external compensation needed; maintains regulation during rapid load steps (e.g., 0%→100% dimming in <100 µs). |
| True load disconnect | DRVP-driven p-MOSFET eliminates leakage path when disabled, preventing unintended LED glow and enabling safe hot-swap. |
| Programmable OVP & SCP | OVP threshold set via resistor divider on OVP pin (1.23 V trip); SCP level adjustable per string using BG-referenced divider on SCP pin. |
| Integrated soft-start | Internal ramp limits inrush current; duration scales inversely with switching frequency (e.g., ~4 ms at 2 MHz). |
Applications
| Notebook PC Backlight | Tablet PC Display |
|---|---|
Use Scenario: Driving 6–8 parallel LED strings behind 10–13 inch LCD panels with dynamic brightness control. IC Role / Device Role / Timing Role: Primary boost LED driver with I²C-configurable dimming, phase-shifted PWM, and fault reporting to system MCU. Use Value: Enables >90% efficiency at 12 V input and 40 mA/string, reduces EMI to meet CISPR-22 Class B, and supports flicker-free video playback via VSYNC sync. |
Use Scenario: Powering dual-zone edge-lit backlight in 7–10 inch tablets with adaptive dimming based on ambient light sensor input. IC Role / Device Role / Timing Role: High-precision constant-current source with ±1% matching across strings for uniform luminance and minimal color shift. Use Value: Delivers consistent brightness across display corners; phase shifting lowers input capacitor requirements by 40%, saving board space and cost. |
| LCD Monitor Backlight | UMPC Display System |
Use Scenario: Supporting 15–24 inch monitors with high-brightness (≥300 nits) LED arrays requiring thermal-aware dimming and robust fault handling. IC Role / Device Role / Timing Role: Main backlight controller with OTP protection, OVP clamping, and latched FLT signaling for system-level fault logging. Use Value: Prevents catastrophic failure during LED open-circuit events; thermal shutdown at 150 °C protects against sustained overloads in enclosed enclosures. |
Use Scenario: Enabling ultra-thin UMPC designs where height-constrained inductors and minimal passive count are critical. IC Role / Device Role / Timing Role: Integrated boost + current sink solution eliminating discrete op-amps, references, and external MOSFET drivers. Use Value: Reduces BOM count by ≥7 components per channel; 4×4 mm QFN footprint fits tight mechanical envelopes without compromising thermal performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL97682IRTZ-T7A | 8-channel, 40 V max output, fixed 1 MHz switching, no phase-shifting, I²C-only dimming (no PWMI pin). | Lacks string-by-string phase shift and VSYNC sync; lower EMI mitigation capability; no DRVP for true disconnect. | Choose when board-level EMI filtering is already implemented and full phase-shift benefit is unnecessary. |
| MAX16832ATI+T | 8-channel, 40 V max output, analog/PWM dimming, no I²C interface, external compensation required. | Requires external op-amp and compensation network; no digital fault reporting; limited thermal management features. | Prefer for cost-sensitive, non-I²C systems where firmware integration is minimal and layout flexibility allows added passives. |
Compared with ISL97682IRTZ-T7A and MAX16832ATI+T, SC5010HULTRT-01 uniquely combines phase-shifted PWM, VSYNC synchronization, true load disconnect, and integrated thermal/overvoltage protection-enabling higher efficiency, lower EMI, and greater system reliability in portable display applications.
Availability
SC5010HULTRT-01 is available at Aetrix Electronics and suitable for notebook PCs, tablet PCs, LCD monitors, and UMPCs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SC5010HULTRT-01 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
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in high-performance analog and mixed-signal ICs for power management, sensing, and connectivity.
The SC5010HULTRT-01 belongs to Semtech's SC50xx LED driver family, designed specifically for high-efficiency, low-EMI backlighting in portable and space-constrained displays with stringent thermal and reliability requirements.
FAQ
What is the maximum LED string voltage supported by the SC5010HULTRT-01?
The SC5010HULTRT-01 supports up to 50 V output voltage, enabling configurations such as 6 parallel strings of 10-series white LEDs (6P10S) at typical VF ≈ 3.2 V per LED. This is achieved via its integrated boost controller and external n-MOSFET, with OVP protection programmable via the OVP pin resistor divider to prevent overvoltage damage.
How does phase-shifted PWM dimming improve EMI performance in the SC5010HULTRT-01?
In the SC5010HULTRT-01, phase shifting distributes the PWM switching edges evenly across the eight IO pins-e.g., 6.25 µs delay between adjacent strings at 20 kHz-reducing peak input current harmonics and lowering conducted/radiated EMI by up to 15 dB compared to synchronized PWM. This eliminates need for large bulk capacitors and simplifies EMC filter design.
Can the SC5010HULTRT-01 operate with fewer than 8 LED strings?
Yes. The SC5010HULTRT-01 supports partial-string operation: unused IO pins (e.g., IO5–IO8) must be tied to AGND during startup to disable those channels. The device automatically detects grounded IO pins within 1 ms and disables corresponding current sinks while maintaining full regulation and matching on active strings.
What protection features are integrated into the SC5010HULTRT-01?
The SC5010HULTRT-01 integrates open/short LED detection, programmable over-voltage protection (OVP), over-temperature shutdown (150 °C with 10 °C hysteresis), input under-voltage lockout (UVLO), and LED short-circuit protection (SCP) with user-adjustable trip threshold. All faults assert the open-drain FLT pin, which remains latched until EN, VCC, or UVLO is cycled.
Is the SC5010HULTRT-01 compatible with standard I²C timing specifications?
Yes. The SC5010HULTRT-01 complies with standard Fast-Mode I²C (400 kHz), with guaranteed tLOW(SCL) ≥ 1.3 µs, tHIGH(SCL) ≥ 0.6 µs, tHD(START) ≥ 0.6 µs, and tSU(STOP) ≥ 0.6 µs. SDA is open-drain with 0.3 V low-level output at –6 mA, ensuring interoperability with common microcontrollers and PMICs.
SC5010HULTRT-01 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 28-UFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Controller
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 8
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 27V
- Voltage - Output:
- 50V
- Current - Output / Channel:
- 30mA
- Frequency:
- 200kHz ~ 2.2MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-MLPQ-UT (4x4)
SC5010HULTRT-01 FAQ
1.How can I place an order for SC5010HULTRT-01 through Aetrix?
Please submit a Request for Quotation (RFQ) for SC5010HULTRT-01 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 SC5010HULTRT-01 reliable?
The price and inventory of SC5010HULTRT-01 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC5010HULTRT-01 is usually 5 days.
3.What payment methods are accepted for SC5010HULTRT-01?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC5010HULTRT-01 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC5010HULTRT-01?
SC5010HULTRT-01 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC5010HULTRT-01 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 SC5010HULTRT-01?
For technical support, including SC5010HULTRT-01 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC5010HULTRT-01 requirements.
6.How does Aetrix verify that SC5010HULTRT-01 is sourced from the original manufacturer or authorized distributors?
All SC5010HULTRT-01 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 SC5010HULTRT-01 meets industry standards.
7.What is the process for return or replacement of SC5010HULTRT-01?
All SC5010HULTRT-01 units undergo pre-shipment inspection (PSI). If there is an issue with SC5010HULTRT-01, 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 SC5010HULTRT-01 part is unused and in its original packaging.
Return procedure for SC5010HULTRT-01:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC5010HULTRT-01 Tags
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