My Inquiry
My Account
Texas Instruments TPS92001DGK
- Part No.:
- TPS92001DGK
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS92001DGK.pdf
- Description:
- IC LED DRIVER OFFL DIM 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,880
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS92001DGK from Texas Instruments is a phase-cut TRIAC-dimmable PWM controller for LED lighting, implementing fixed-frequency current-mode control with 10-V UVLO turn-on threshold, 70% maximum duty cycle, and integrated 5-V reference output. It drives N-channel MOSFETs via a 0.4-A source/0.8-A sink gate driver and supports isolated/non-isolated flyback topologies in residential A19/E26/GU10 lamps.
For engineers reviewing the TPS92001DGK datasheet, TPS92001DGK pinout, TPS92001DGK application, or TPS92001DGK equivalent, this device is selected for TRIAC-dimmable LED drivers requiring low startup current (110 µA), soft-start control, EMI-filter-compatible timing architecture, and MSOP-8 packaging for space-constrained lighting modules.
Technical Context
The TPS92001DGK uses a current-mode PWM architecture with internal oscillator frequency set by RTC, RTD, and CCT (e.g., 100 kHz with RRTC = 10 kΩ, RRTD = 4.32 kΩ, CCT = 820 pF). Its CS pin sums primary current sense and slope compensation against a 1-V threshold to reset the PWM latch.
UVLO features 10-V turn-on and 8-V turn-off thresholds with 2-V hysteresis; the GD driver delivers rail-to-rail switching with 35-ns rise and 18-ns fall times into 1-nF load. Soft-start is controlled by an internal 6-µA current source charging the SS pin capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| UVLO Turn-On Threshold | 10 V - Ensures reliable startup above brownout conditions in 120-VAC line-derived supplies |
| Max Duty Cycle | 70% - Limits peak primary current in flyback converters to maintain transformer safety margins |
| Oscillator Frequency | 100 kHz (typ) - Balances EMI performance and magnetics size for residential lighting |
| Gate Driver Sink/Source | 0.8 A sink / 0.4 A source - Directly drives medium-power MOSFET gates without external buffers |
| Reference Output | 5 V ±2.5% - Powers auxiliary circuitry (e.g., microcontroller, optocoupler bias) with 0.47-µF bypass |
| Startup Current | 110 µA - Enables operation from high-impedance bleeder networks in TRIAC-dimming interfaces |
| Operating Junction Temp | –40°C to +105°C - Supports enclosed fixture environments without derating |
Pinout & Package
TPS92001DGK is housed in an 8-pin VSSOP (DGK) package measuring 3.0 mm × 3.0 mm × 1.1 mm, optimized for compact LED driver PCBs with thermal pad exposed on underside.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Current Sense Input | Summation node for primary current feedback and slope compensation; resets PWM latch at 1-V threshold |
| SS (Pin 2) | Soft-Start Control | Charged by internal 6-µA current source; 0.4–2.0 V range controls duty-cycle ramp during startup |
| RTC (Pin 3) | Oscillator Timing Input | Sets positive ramp time of internal oscillator via external resistor; senses CCT voltage at 3.33 V threshold |
| RTD (Pin 4) | Oscillator Timing Input | Sets negative ramp time of internal oscillator via external resistor; senses CCT voltage at 1.67 V threshold |
| GND (Pin 5) | Power & Signal Reference | Common return for all analog and power circuits; must be low-inductance connection to minimize noise coupling |
| GD (Pin 6) | Gate Driver Output | High-current totem-pole output driving N-MOSFET gate; requires ≥3.9 Ω series resistor for dV/dt control |
| VDD (Pin 7) | Supply Input | Shunt-regulated at 17.5 V; bypassed with 1-µF ceramic capacitor to sustain gate drive under transient loads |
| REF (Pin 8) | 5-V Reference Output | Buffered precision reference; supplies up to 6 mA and requires 0.47-µF ceramic bypass to GND |
Key Features
| Feature | Design Value |
|---|---|
| TRIAC Dimming Compatibility | Supports leading-edge phase-cut dimmers without additional active circuitry, using internal soft-start and current-mode control to suppress flicker |
| Integrated 5-V Reference | Stable 5-V output with ±2.5% tolerance and 2-mV line/load regulation enables direct powering of optocouplers or MCU peripherals |
| Low Startup Current | 110 µA typical allows use with high-value bleeder resistors in dimmer interface circuits, minimizing standby power loss |
| Full-Cycle Soft Start | Internal 6-µA SS current source ramps duty cycle from 0% to 70% over ~100 ms, preventing inrush current in transformer-coupled outputs |
| EMI-Optimized Oscillator | RTC/RTD/CCT timing network minimizes capacitive coupling sensitivity; recommended layout places resistors adjacent to pins 3/4 and returns CCT directly to GND |
Applications
| Residential LED Lamps | Architectural Wall Washing |
|---|---|
Use Scenario: A19/E26 screw-base LED retrofit lamp operating from 120-VAC mains with TRIAC wall dimmer. IC Role / Device Role / Timing Role: Primary PWM controller regulating LED current in non-isolated buck or isolated flyback topology; sets switching frequency and duty cycle based on CS feedback and soft-start timing. Use Value: Enables flicker-free dimming down to 10% light output while maintaining >0.9 power factor across input voltage range. |
Use Scenario: Linear LED strip driver embedded in aluminum extrusion for museum-grade wall illumination. IC Role / Device Role / Timing Role: Constant-current controller with adjustable max duty cycle and UVLO hysteresis to tolerate line sags in commercial building wiring. Use Value: Delivers stable 350-mA output with <±3% regulation over –40°C to +85°C ambient, supporting IP65-rated enclosures. |
| Pathway Lighting | Overhead Can Lights |
Use Scenario: Solar-powered outdoor step light with battery backup and dusk-to-dawn photocell interface. IC Role / Device Role / Timing Role: DC-DC converter controller accepting 12–24 VDC input; uses REF pin to bias photocell comparator and SS pin for delayed startup. Use Value: Achieves 89% peak efficiency at 500-mA output with no external gate driver needed, reducing BOM count. |
Use Scenario: Recessed 6-in can light with integrated heat sink and thermal foldback protection. IC Role / Device Role / Timing Role: Isolated flyback controller where GD drives primary-side MOSFET and CS monitors reflected current via auxiliary winding. Use Value: Supports Class P compliance with <100 mW no-load consumption and built-in leading-edge blanking on CS pin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED lighting PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92002DGKR | 15-V UVLO turn-on threshold vs. 10 V; identical pinout, timing, and driver specs | Better suited for 230-VAC systems or higher-input DC-DC designs where higher startup voltage prevents false triggering | Select TPS92002DGKR when input supply exceeds 18 V nominal or requires wider UVLO hysteresis margin |
| NCP1015ST100T3G | Fixed 100-kHz frequency, no soft-start, no integrated 5-V reference, lower gate drive (0.5 A sink) | Lacks TRIAC-dimming optimization and requires external reference/bias; targets cost-sensitive non-dimmable applications | Choose NCP1015ST100T3G only for fixed-output, non-dimmable LED drivers where BOM cost outweighs dimming capability |
Compared with TPS92001DGK, TPS92002DGKR offers higher UVLO for robustness in wide-input AC systems, while NCP1015ST100T3G reduces feature set and integration to lower cost-neither provides full TRIAC-dimming support or 5-V reference functionality inherent to TPS92001DGK.
Availability
TPS92001DGK is available at Aetrix Electronics and suitable for residential LED lamp drivers, architectural wall washers, and pathway lighting systems requiring stable component supply with full production traceability and long-term lifecycle support.
Supply support for TPS92001DGK 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 leader specializing in analog, embedded processing, and power management ICs, with decades of expertise in lighting control and energy-efficient power conversion.
The TPS92001DGK belongs to TI's general-purpose LED lighting controller product line, designed specifically for cost-effective, TRIAC-dimmable AC/DC LED drivers targeting residential and commercial retrofit lamps.
FAQ
What is the UVLO behavior of the TPS92001DGK?
The TPS92001DGK has a 10-V turn-on threshold and 8-V turn-off threshold, providing 2-V hysteresis to prevent oscillation during input voltage sags. This ensures clean startup and shutdown in 120-VAC-derived supplies and avoids false triggering from line noise. The UVLO circuit draws only 110 µA during startup, enabling compatibility with high-impedance dimmer interface networks.
How does the TPS92001DGK support TRIAC dimming?
The TPS92001DGK supports leading-edge phase-cut TRIAC dimming through its current-mode architecture, programmable soft-start, and low 110-µA startup current. It eliminates the need for external dimmer detection circuitry by relying on inherent current-sense loop stability and full-cycle soft-start to suppress audible noise and visible flicker across the 10–100% dimming range.
What is the function of the REF pin on the TPS92001DGK?
The REF pin on the TPS92001DGK delivers a buffered 5-V ±2.5% reference output capable of sourcing up to 6 mA. It is intended to power auxiliary components such as optocoupler bias networks, microcontroller I/O, or dimmer interface comparators. A 0.47-µF ceramic capacitor must be placed directly between REF and GND to ensure stability and low-noise operation.
Can the TPS92001DGK drive a MOSFET directly without external components?
Yes, the TPS92001DGK integrates a 0.4-A source / 0.8-A sink gate driver on the GD pin, enabling direct drive of medium-power N-channel MOSFETs. A minimum 3.9-Ω series gate resistor is required to limit dV/dt and prevent ringing. No external driver stage is needed for MOSFETs with Qg ≤ 25 nC in typical 100-kHz LED driver designs.
What package type is used for the TPS92001DGK?
The TPS92001DGK uses the 8-pin VSSOP (DGK) package - a 3.0 mm × 3.0 mm × 1.1 mm surface-mount outline with exposed thermal pad. This compact, low-profile package supports high-density LED driver layouts and provides superior thermal performance versus SOIC-8, with θJA = 62°C/W under standard PCB conditions.
TPS92001DGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- AC DC Offline Switcher
- Topology:
- Flyback, Step-Down (Buck)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- 21V
- Voltage - Output:
- 5V
- Current - Output / Channel:
- -
- Frequency:
- 100kHz
- Dimming:
- Triac
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 105°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
TPS92001DGK FAQ
1.How can I place an order for TPS92001DGK through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92001DGK 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 TPS92001DGK reliable?
The price and inventory of TPS92001DGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92001DGK is usually 5 days.
3.What payment methods are accepted for TPS92001DGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92001DGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92001DGK?
TPS92001DGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92001DGK 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 TPS92001DGK?
For technical support, including TPS92001DGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92001DGK requirements.
6.How does Aetrix verify that TPS92001DGK is sourced from the original manufacturer or authorized distributors?
All TPS92001DGK 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 TPS92001DGK meets industry standards.
7.What is the process for return or replacement of TPS92001DGK?
All TPS92001DGK units undergo pre-shipment inspection (PSI). If there is an issue with TPS92001DGK, 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 TPS92001DGK part is unused and in its original packaging.
Return procedure for TPS92001DGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS92001DGK Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
