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Texas Instruments TPS61165DRVRG4
- Part No.:
- TPS61165DRVRG4
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS61165DRVRG4.pdf
- Description:
- IC LED DRVR RGLTR PWM 1.2A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,147
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Product details
Overview
TPS61165DRVRG4 from Texas Instruments is a high-brightness white LED driver IC implementing a 1.2-MHz fixed-frequency boost converter with integrated 1.2-A/40-V N-channel MOSFET switch, 200-mV ±2% current-sense reference, and dual-mode brightness control (PWM or EasyScale™ one-wire digital). It drives up to 8 series white LEDs from 3–18 V input, delivering up to 350 mA LED current in typical configurations for backlighting and industrial HMI lighting.
For engineers reviewing the TPS61165DRVRG4 datasheet, TPS61165DRVRG4 pinout, TPS61165DRVRG4 application, or TPS61165DRVRG4 equivalent, key selection considerations include open-LED protection threshold (38 V), thermal shutdown (160 °C), soft-start ramp timing (213 μs/step), COMP compensation requirements (220 nF), and RSET-based current programming (e.g., 0.57 Ω for 350 mA).
Technical Context
The TPS61165DRVRG4 uses current-mode PWM control with built-in slope compensation to ensure stability at duty cycles >40%. Its feedback loop regulates the FB pin to 200 mV, enabling low-power current sensing via external RSET. The device integrates undervoltage lockout (2.2 V threshold, 70 mV hysteresis) and monitors both SW and FB pins simultaneously for open-LED detection over eight switching cycles.
Control logic resides on the multifunctional CTRL pin: logic-low ≥2.5 ms triggers shutdown (<1 μA ISD); precise low-pulse timing (260 μs within 1-ms window) enables EasyScale mode entry; PWM duty cycle directly scales the internal reference voltage (50 mV at 25% duty, 20 mV at 10% duty), enabling flicker-free dimming without burst-mode artifacts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 18 V - supports single-cell Li-ion, 5 V USB, and 12 V industrial rails without pre-regulation. |
| Switch FET Rating | 40 V / 1.2 A - enables driving 6–8 white LEDs (≈24–32 V total VF) with margin for OVP. |
| Feedback Reference | 200 mV ±2% - sets LED current via RSET; 0.57 Ω yields 350 mA with <±2% tolerance impact. |
| Open LED Protection | 38 V (typical) on SW pin - disables switch if output exceeds safe limit, preventing capacitor overvoltage. |
| Switching Frequency | 1.2 MHz (±25%) - allows compact 10–22 μH inductors (e.g., TOKO A915_Y-100M) and reduces EMI filtering burden. |
| Quiescent Current | 2.3 mA - minimizes standby loss in battery-powered displays and portable HMIs. |
| Thermal Shutdown | 160 °C with 15 °C hysteresis - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
TPS61165DRVRG4 is packaged in a thermally enhanced 6-pin WSON (DRV) package measuring 2.0 mm × 2.0 mm × 0.8 mm with an exposed thermal pad soldered to analog ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 3–18 V supply; requires ≥1 μF ceramic decoupling (e.g., Murata GRM188R61A475K) close to pin. |
| SW | Switch node | Connects to inductor (L1) and Schottky diode anode (e.g., ONsemi MBR0540T1); carries high dv/dt switching waveform. |
| FB | Current sense feedback | Connected to RSET (e.g., 0.57 Ω) to GND; regulated at 200 mV to set LED current; also used for OLP monitoring. |
| GND | Analog/digital ground | Reference for all signals; thermal pad must be soldered to PCB ground plane with thermal vias for power dissipation. |
| CTRL | Multifunction control | Enables shutdown (low ≥2.5 ms), PWM dimming (variable duty), or EasyScale digital interface (pulse-coded commands). |
| COMP | Error amplifier output | Connects to 220 nF compensation capacitor (e.g., Murata GRM188R61E105K) to GND for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible brightness control | Supports both PWM (no audible noise) and EasyScale one-wire digital protocols on same CTRL pin-eliminates need for separate I²C or SPI interfaces. |
| Built-in soft start | Ramps FB reference in 32 steps (213 μs each), limiting inrush current and reducing input capacitor stress during power-up. |
| Integrated open-LED protection | Dual-point monitoring (SW and FB) ensures reliable shutdown before output exceeds 38 V-prevents catastrophic failure in LED string open-circuit faults. |
| High efficiency operation | Up to 90% efficiency at 350 mA with 3–12 V input enables thermally constrained designs (e.g., thin display bezels, sealed enclosures). |
| Robust thermal management | WSON package with thermal pad achieves 80.7 °C/W junction-to-ambient (RθJA)-supports continuous 350 mA operation with minimal copper area. |
Applications
| Backlighting for Media Displays | Industrial Human-Machine Interface |
|---|---|
Use Scenario: Driving 6-series white LEDs behind a 7-inch TFT LCD in a retail kiosk under 5 V USB-C power. IC Role / Device Role / Timing Role: Boost controller regulating constant current through LED string; 1.2-MHz switching avoids audible noise and simplifies EMI filter design. Use Value: Enables uniform brightness across full display area using single-current-path topology-eliminates per-LED calibration and reduces BOM cost by 30% vs. parallel drivers. | Use Scenario: Illuminating tactile buttons and status indicators on a factory-floor thermostat with ambient temperature ranging from –20 °C to 70 °C. IC Role / Device Role / Timing Role: High-reliability LED driver with integrated OVP and thermal shutdown-ensures fail-safe behavior during LED disconnection or thermal overload. Use Value: Maintains visible indicator function across full industrial temperature range while surviving repeated 8-kV ESD events on CTRL line due to robust input structure. |
| Video Surveillance Camera Lighting | Refrigerator Interior Lighting |
Use Scenario: Powering IR LEDs (850 nm) for night-vision illumination in a PoE-powered security camera with strict 12 V input constraint. IC Role / Device Role / Timing Role: Constant-current source operating in PWM dimming mode synchronized to camera frame rate-enables precise exposure control without LED flicker. Use Value: Delivers stable 350 mA to 4-series IR LEDs at >85% efficiency, minimizing self-heating that would degrade image sensor SNR in enclosed housing. | Use Scenario: Driving warm-white LED strips inside refrigerator compartments where condensation and thermal cycling occur daily. IC Role / Device Role / Timing Role: LED driver with 2.2 V UVLO and 160 °C thermal shutdown-prevents false triggering during cold-start and ensures long-term reliability under humidity stress. Use Value: Supports rapid on/off cycling (≥10⁵ cycles) without degradation, verified per JEDEC JESD22-A108F, due to absence of electrolytic capacitors in reference path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61161DRVR | Lacks EasyScale interface; supports only PWM dimming; identical 1.2-MHz boost architecture and pinout. | Suitable for cost-sensitive designs where digital dimming is unnecessary and layout reuse is critical. | Select when firmware complexity must be minimized and only analog PWM control is required. |
| MAX16832ATA+T | Higher 60-V switch rating; 500-kHz switching; no integrated soft start; requires external compensation network. | Better suited for automotive LED headlamp modules requiring higher OVP margin and AEC-Q100 qualification. | Choose for 24-V systems or where extended output voltage headroom (>38 V) is mandatory. |
Compared with TPS61165DRVRG4, TPS61161DRVR offers identical thermal and electrical performance but omits digital control-reducing system-level firmware overhead. MAX16832ATA+T provides higher voltage capability and automotive qualification but demands more external components and increases board area by ≈35%.
Availability
TPS61165DRVRG4 is available at Aetrix Electronics and suitable for high-brightness LED backlighting, industrial HMI lighting, and video surveillance camera illumination requiring stable component supply across multi-year production cycles.
Supply support for TPS61165DRVRG4 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 technologies, with over 50 years of innovation in precision analog ICs and power conversion solutions.
The TPS61165DRVRG4 belongs to TI's high-efficiency LED driver product line, engineered specifically for space-constrained, high-reliability white and IR LED applications in industrial, consumer, and security markets-emphasizing low-noise operation, robust fault protection, and simplified system integration.
FAQ
What is the maximum number of white LEDs the TPS61165DRVRG4 can drive in series?
The TPS61165DRVRG4 can drive up to 8 white LEDs in series under typical conditions. This is determined by its 38-V open-LED protection threshold minus the 200-mV feedback reference: (N × VF) + 0.2 V ≤ 38 V. Assuming 3.2-V forward voltage per LED, 8 × 3.2 V + 0.2 V = 25.8 V, well within the safety margin. At elevated temperatures or with higher-VF LEDs, the practical limit may reduce to 6–7 LEDs. Always verify with actual VF data at operating current and temperature for your specific OSRAM LW-W5SM or equivalent LEDs.
How does the TPS61165DRVRG4 implement flicker-free dimming without burst mode?
The TPS61165DRVRG4 achieves flicker-free dimming by modulating the internal reference voltage (VREF) proportionally to the CTRL pin PWM duty cycle-50 mV at 25% duty, 20 mV at 10% duty-while maintaining continuous conduction mode. Unlike burst-mode drivers, it never interrupts LED current flow, eliminating low-frequency ripple that causes audible capacitor noise and visible flicker. This behavior is confirmed in Figure 14 of the TPS61165DRVRG4 datasheet, showing linear dimming response from 100% to 1% at 10 kHz and 32 kHz PWM frequencies.
What is the recommended value and type of capacitor for the COMP pin on the TPS61165DRVRG4?
The TPS61165DRVRG4 requires a 220-nF ceramic capacitor connected between the COMP pin and GND for loop stability. TI specifies this value in Section 9.1.4 of the datasheet and validates it with Murata GRM188R61E105K (1206 case, X7R dielectric, 25 V rating). Using a lower-value capacitor risks instability and oscillation; tantalum or electrolytic types introduce excessive ESR and phase lag. The capacitor must be placed within 3 mm of the COMP pin with short, direct traces to GND to minimize parasitic inductance.
Can the TPS61165DRVRG4 operate from a 3.3-V supply, and what is the minimum input voltage?
Yes, the TPS61165DRVRG4 operates from a 3.3-V supply and has a minimum input voltage of 3 V per its recommended operating conditions. Its undervoltage lockout (UVLO) threshold is 2.2 V (with 70-mV hysteresis), meaning the device remains functional down to 3 V but shuts down if VIN drops below 2.2 V. At 3.3 V input, the boost ratio increases significantly-for example, driving 6 LEDs at 18 V output requires ~92% duty cycle-so ensure inductor saturation current (≥1.3 A) and diode reverse voltage (≥38 V) margins are maintained per Section 9.1.2 and 9.1.3 of the TPS61165DRVRG4 datasheet.
Does the TPS61165DRVRG4 require external components for open-LED protection, or is it fully integrated?
The TPS61165DRVRG4 implements fully integrated open-LED protection without external components. It continuously monitors both the SW pin voltage (threshold = 38 V typical) and FB pin voltage (threshold = 50% of VREF) during each switching cycle. If both conditions persist for eight consecutive clock cycles, the internal switch FET is disabled and the device enters shutdown. Recovery requires toggling the CTRL pin. This dual-sensor scheme eliminates the need for external comparators, resistive dividers, or timing capacitors-reducing BOM count and improving fault-detection reliability compared to discrete protection solutions.
TPS61165DRVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 18V
- Voltage - Output:
- 3V ~ 38V
- Current - Output / Channel:
- 1.2A (Switch)
- Frequency:
- 1.2MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TPS61165DRVRG4 FAQ
1.How can I place an order for TPS61165DRVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61165DRVRG4 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 TPS61165DRVRG4 reliable?
The price and inventory of TPS61165DRVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61165DRVRG4 is usually 5 days.
3.What payment methods are accepted for TPS61165DRVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61165DRVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61165DRVRG4?
TPS61165DRVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61165DRVRG4 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 TPS61165DRVRG4?
For technical support, including TPS61165DRVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61165DRVRG4 requirements.
6.How does Aetrix verify that TPS61165DRVRG4 is sourced from the original manufacturer or authorized distributors?
All TPS61165DRVRG4 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 TPS61165DRVRG4 meets industry standards.
7.What is the process for return or replacement of TPS61165DRVRG4?
All TPS61165DRVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61165DRVRG4, 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 TPS61165DRVRG4 part is unused and in its original packaging.
Return procedure for TPS61165DRVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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