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Texas Instruments UCL64010DR
- Part No.:
- UCL64010DR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- -
- Datasheet:
-
UCL64010DR.pdf
- Description:
- UCL64010 - LED DRIVER, PDSO8
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
UCL64010DR from Texas Instruments is an 8-pin SOIC quasi-resonant PWM controller for offline LED lighting drivers, featuring programmable line/load overvoltage protection, 1-A sink/–0.75-A source TrueDrive™ gate output, 130 kHz max switching frequency, and –40°C to 105°C operating junction temperature. It enables high-efficiency A19/E26/GU10/MR16 lamp drivers with primary-side regulation and open-LED protection.
For engineers reviewing the UCL64010DR datasheet, UCL64010DR pinout, UCL64010DR application, or UCL64010DR equivalent, this page delivers verified technical context, real-world mode-switching behavior (QR/FFM/LPM), confirmed protection thresholds (VSD=3.75 V load OVP, 140°C thermal shutdown), and validated alternative options for residential and architectural LED driver designs.
Technical Context
The UCL64010DR implements multi-mode control: quasi-resonant (QR) or DCM operation at VFB = 2.0–4.0 V (fSW = 40–130 kHz), frequency foldback mode (FFM) at VFB = 1.4–2.0 V (constant volt-seconds), and burst-mode low-power mode (LPM) at VFB < 0.7 V (40 kHz pulses). All modes maintain current-mode control via PCS-sensed peak MOSFET current.
Valley switching detection uses the VSD pin with programmable line/load overvoltage protection: LINE_VSD triggers shutdown if ILINE > 450 μA; LOAD_VSD triggers if VVSD > 3.75 V. Internal cycle-by-cycle power limit sets PCS + offset = 1.2 V threshold, with LPM pin actively pulled low during normal operation and high-impedance in UVLO/soft-start/fault states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max switching frequency | 130 kHz - clamped QR/DCM upper limit; reduces EMI and switching loss at full load |
| Startup current | 25 μA max - enables direct auxiliary winding startup without external bias supply |
| Gate drive capability | 1-A sink / –0.75-A source - directly drives medium-power MOSFETs without external buffer |
| Feedback voltage range | 0.3–6.0 V - maps to QR/FFM/LPM mode selection and regulates output current via primary-side sensing |
| Thermal shutdown | 140°C - protects against sustained overload; 15°C hysteresis prevents oscillation near trip point |
| Undervoltage lockout | 13.0 V start / 8.0 V stop - ensures stable operation only after sufficient VDD rail establishment |
| Power limit threshold | 1.20 V (PCS + offset) - enforces cycle-by-cycle power limiting across input line range |
Pinout & Package
UCL64010DR is housed in an 8-pin SOIC (D) package with exposed pad not present; JEDEC MS-012AC compliant; RoHS-compliant, Pb-Free (RoHS) finish; MSL Level 3 per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SS | Soft-start programming input | Capacitor-to-GND sets soft-start ramp rate; faults discharge SS via 100 Ω internal MOSFET |
| 2 FB | Feedback voltage input | Primary-side regulation node; internal 20 kΩ pullup to 5-V reference; controls QR/FFM/LPM mode selection |
| 3 PCS | Peak current sense input | Senses MOSFET current via external resistor; programs power limit and enables overcurrent hiccup restart |
| 4 GND | Signal ground reference | Return path for internal circuitry; requires 0.1-μF ceramic capacitor placed adjacent to VDD pin |
| 5 GD | Gate drive output | TrueDrive™ output switching between GND and ≤13-V clamp; drives MOSFET gate directly |
| 6 VDD | Supply input | Powered from auxiliary winding; 27-V absolute max; internal clamp activates at 26 V |
| 7 VSD | Valley switching detect input | Senses resonant valley timing and provides line/load overvoltage protection via current/voltage thresholds |
| 8 LPM | Low-power mode indicator | Open-drain output pulled low during normal operation; high-impedance during UVLO, soft-start, or fault |
Key Features
| Feature | Design Value |
|---|---|
| Quasi-resonant valley switching | Reduces EMI and switching losses by triggering GD at first resonant valley post-demagnetization |
| Three-stage adaptive frequency control | Automatically transitions between QR (130 kHz), FFM (40–130 kHz), and burst-mode LPM (40 kHz) based on VFB |
| Programmable line/load overvoltage protection | Configurable via RVSD1/RVSD2 divider; detects open-LED condition (VVSD > 3.75 V) or overline (ILINE > 450 μA) |
| Cycle-by-cycle power limiting | Prevents transformer saturation under wide line/load variations using PCS + line-proportional offset |
| TrueDrive™ gate output | Delivers 1-A sink/–0.75-A source into MOSFET gate without external driver, reducing BOM count and layout area |
Applications
| Residential LED Lamp Drivers | Architectural Wall Washing |
|---|---|
Use Scenario: Driving integrated A19, GU10, or MR16 LED lamps directly from AC mains with no secondary-side feedback. IC Role / Device Role / Timing Role: Primary-side PWM controller executing QR valley switching and VFB-based mode transitions to regulate LED current. Use Value: Eliminates optocoupler and secondary-side TL431, reducing cost and improving reliability while maintaining ±5% current regulation. |
Use Scenario: Powering long linear LED strips in retail display or museum wall-washing fixtures requiring dimmable, flicker-free output. IC Role / Device Role / Timing Role: Multi-mode controller managing light-load efficiency via burst-mode LPM and full-load EMI reduction via QR timing. Use Value: Achieves >85% efficiency at 10% load via 40 kHz burst pulses and maintains low THD through frequency foldback below 30% load. |
| Pathway & Outdoor Lighting | Overhead & Sconce Drivers |
Use Scenario: Outdoor-rated LED pathway lights exposed to wide ambient temperature swings (–40°C to 85°C). IC Role / Device Role / Timing Role: Robust controller with 140°C thermal shutdown and –40°C to 105°C TJ rating ensuring safe operation under thermal stress. Use Value: Prevents thermal runaway in enclosed fixtures; internal hysteresis avoids repeated cycling near trip temperature. |
Use Scenario: Dimmable wall sconces and ceiling-mounted fixtures where standby power must be <300 mW for Energy Star compliance. IC Role / Device Role / Timing Role: Low-power mode controller reducing average switching frequency to 40 kHz bursts when VFB < 0.5 V. Use Value: Achieves 25 μA startup current and 350–550 μA standby current, enabling deep dimming without auxiliary bias leakage paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED lighting controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28810DR | Higher VDD clamp (30 V vs. 27 V); supports wider input range; lacks LPM pin output | Better suited for universal-input (90–305 VAC) industrial drivers; no native low-power mode indicator | Select UCC28810DR when designing for >265 VAC line or needing higher VDD tolerance; retain UCL64010DR for residential LPM visibility and tighter cost targets |
| NCP1337DR2G | Fixed 65 kHz frequency; no frequency foldback or burst-mode LPM; lower gate drive (0.5-A sink) | Targets simpler, lower-cost constant-frequency flyback designs; no light-load efficiency optimization | Choose NCP1337DR2G for non-dimmable, fixed-frequency applications where QR complexity is unnecessary; prefer UCL64010DR for energy-efficient dimmable lamps |
Compared with UCC28810DR and NCP1337DR2G, the UCL64010DR uniquely combines programmable LPM indication, true burst-mode operation below 10% load, and integrated line/load OVP-making it optimal for cost-sensitive, dimmable residential LED drivers requiring <300 mW standby and open-LED protection.
Availability
UCL64010DR is available at Aetrix Electronics and suitable for residential LED lamp drivers, architectural wall washing systems, and outdoor pathway lighting requiring stable component supply, RoHS compliance, and production-ready SOIC-8 packaging.
Supply support for UCL64010DR 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
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and power management ICs, with leadership in energy-efficient power conversion and LED lighting solutions.
The UCL64010DR belongs to TI's offline LED lighting controller product line, designed specifically for primary-side regulated, quasi-resonant flyback drivers targeting residential and commercial LED retrofit lamps with stringent standby power and reliability requirements.
FAQ
What is the maximum allowable VDD voltage for the UCL64010DR?
The UCL64010DR has an absolute maximum VDD rating of 27 V. Its internal clamp activates at 26 V under typical conditions, protecting internal circuitry from overvoltage transients. Operation above 26 V risks latch-up or permanent damage; design must ensure auxiliary winding bias stays within 21 V (recommended max) to 26 V (clamp onset) across line and load conditions. The UCL64010DR datasheet specifies 27 V as the hard limit.
How does the UCL64010DR implement open-LED protection?
The UCL64010DR implements open-LED protection via its VSD pin: when the LED string opens, the bias winding voltage rises, causing VVSD to exceed 3.75 V - triggering immediate shutdown and retry after UVLO cycle. This is distinct from line overvoltage protection, which responds to ILINE > 450 μA. Both protections are programmable via RVSD1/RVSD2 and require no secondary-side components. The UCL64010DR achieves this fully on the primary side.
What gate drive strength does the UCL64010DR provide?
The UCL64010DR provides a 1-A sink and –0.75-A source TrueDrive™ gate output on the GD pin, capable of directly driving MOSFETs with up to ~1.5 nF total gate charge without external buffering. Rise/fall times are 50–75 ns and 10–20 ns respectively into typical loads. This eliminates need for discrete drivers in medium-power LED drivers (<30 W), reducing BOM cost and PCB area. The UCL64010DR's output clamps at ≤13 V to protect MOSFET gates.
Does the UCL64010DR support dimming interfaces like TRIAC or PWM?
The UCL64010DR does not include built-in TRIAC or PWM dimming interface circuitry. It regulates LED current via the FB pin voltage, which can be modulated by external circuits - e.g., a resistive divider tied to a PWM-controlled voltage or a phase-cut waveform rectified and filtered. Dimming performance depends entirely on external implementation; the UCL64010DR itself only interprets FB voltage level to select operating mode (QR/FFM/LPM). No dedicated dimming pins exist on the UCL64010DR.
What is the purpose of the LPM pin on the UCL64010DR?
The LPM pin on the UCL64010DR is an open-drain output that signals entry into low-power mode: it is actively pulled low during normal operation (VFB > 1.4 V) and goes high-impedance during UVLO, soft-start, or fault conditions. It does not control device behavior but provides system-level status for monitoring or auxiliary circuit enable/disable. The UCL64010DR uses internal logic-not the LPM pin-to execute burst-mode operation when VFB falls below 0.5 V.
UCL64010DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Topology:
- -
- Internal Switch(s):
- -
- Number of Outputs:
- -
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- -
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
UCL64010DR FAQ
1.How can I place an order for UCL64010DR through Aetrix?
Please submit a Request for Quotation (RFQ) for UCL64010DR 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 UCL64010DR reliable?
The price and inventory of UCL64010DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCL64010DR is usually 5 days.
3.What payment methods are accepted for UCL64010DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCL64010DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCL64010DR?
UCL64010DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCL64010DR 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 UCL64010DR?
For technical support, including UCL64010DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCL64010DR requirements.
6.How does Aetrix verify that UCL64010DR is sourced from the original manufacturer or authorized distributors?
All UCL64010DR 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 UCL64010DR meets industry standards.
7.What is the process for return or replacement of UCL64010DR?
All UCL64010DR units undergo pre-shipment inspection (PSI). If there is an issue with UCL64010DR, 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 UCL64010DR part is unused and in its original packaging.
Return procedure for UCL64010DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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