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Texas Instruments TPS92360DCKR
- Part No.:
- TPS92360DCKR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TPS92360DCKR.pdf
- Description:
- IC LED DRV RGLTR PWM 1.2A SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,631
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Product details
Overview
TPS92360DCKR from Texas Instruments is a 38-V, 1.2-A single-channel LED backlight boost driver with integrated 40-V/1.8-A MOSFET, 1.2-MHz switching frequency, 204-mV feedback reference, and PWM brightness control - designed for smartphone and tablet display backlighting requiring compact, high-efficiency DC-DC conversion.
For engineers reviewing the TPS92360DCKR datasheet, TPS92360DCKR pinout, TPS92360DCKR application, or TPS92360DCKR equivalent, key selection criteria include input voltage range (2.7–5.5 V), open LED protection behavior, thermal foldback threshold (100°C), soft-start timing (6.5 ms), and SC70 package thermal resistance (RθJA = 263.8°C/W).
Technical Context
The TPS92360DCKR implements fixed-off-time current-mode control with quasi-constant 1.2-MHz switching, enabling stable regulation across wide input (2.7–5.5 V) and output (up to 38 V) ranges. Its internal GM amplifier regulates FB to 204 mV while supporting PWM dimming via CTRL pin with duty-cycle-dependent reference scaling.
Protection architecture includes cycle-by-cycle current limiting (1.2 A min), open LED detection (SW > 37.5 V & FB < 30 mV for 3 cycles), undervoltage lockout (2.3 V rising threshold), and thermal shutdown at 160°C with 15°C hysteresis - all implemented without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion and USB-powered portable systems without pre-regulation. |
| Max Output Voltage | 38 V - drives up to 10-series white LEDs (3.8 V/V) with margin for diode forward-voltage variation. |
| Switch Current Limit | 1.2 A minimum - ensures reliable operation under worst-case load and temperature conditions (TA ≤ 85°C). |
| Feedback Reference | 204 mV typical - enables low-power, high-accuracy current sensing with RSET resistor (e.g., 10.2 Ω for 20 mA LED current). |
| Switching Frequency | 1.2 MHz nominal - allows use of small 4.7–10 µH inductors and ceramic capacitors, minimizing board area. |
| Efficiency | Up to 90% - achieved with integrated low-RDS(ON) (0.35 Ω typ) MOSFET and optimized gate drive. |
| Thermal Shutdown | 160°C junction temperature - protects against sustained overload; releases automatically after 15°C hysteresis cooldown. |
Pinout & Package
The TPS92360DCKR is housed in a 5-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained portable displays.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SW | Drain of internal power MOSFET | High-current switching node connecting to inductor; requires short, wide PCB trace to minimize EMI and voltage spikes. |
| 2 - GND | Power and signal ground reference | Primary return path for switch current and feedback bias; must be connected to low-impedance ground plane. |
| 3 - FB | Current-sense feedback input | Regulated to 204 mV; connects to RSET resistor between FB and GND to set LED current (ILED = 204 mV / RSET). |
| 4 - CTRL | PWM dimming control input | Accepts 5–100 kHz PWM signal; duty cycle directly scales FB reference voltage (VFB = 204 mV × Duty) for analog-style dimming. |
| 5 - VIN | Input power supply | 2.7–5.5 V input; requires local 1-µF ceramic bypass capacitor placed adjacent to VIN and GND pins. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 40-V/1.8-A MOSFET | Eliminates external high-voltage switch; supports 38-V LED strings while maintaining 1.2-A guaranteed current limit. |
| PWM-controlled analog dimming | Internally filters CTRL PWM to modulate FB reference - avoids audible noise and preserves DC LED current waveform. |
| Open LED protection | Detects open-circuit condition by monitoring SW voltage (>37.5 V) and FB voltage (<30 mV) over 3 cycles, then disables switching to clamp VOUT. |
| Built-in soft-start | 6.5-ms startup ramp with reduced 0.72-A current limit prevents inrush current and stabilizes output voltage rise. |
| Thermal foldback | Reduces current limit linearly above 100°C junction temperature - maintains safe operation during sustained high-load conditions. |
Applications
| Smartphone Backlighting | Tablet Backlighting |
|---|---|
Use Scenario: Driving 6–10 white LEDs in series for high-brightness LCD backlight in battery-powered smartphones. IC Role / Device Role / Timing Role: Single-channel boost controller regulating constant LED current via FB pin and scaling brightness via CTRL PWM input. Use Value: 90% efficiency extends battery life; 1.2-MHz switching enables compact 4.7-µH inductor; SC70 package fits tight bezel layouts. | Use Scenario: Powering dual parallel LED strings (e.g., 10s2p) for larger LCD panels in 7–10 inch tablets. IC Role / Device Role / Timing Role: High-voltage boost driver delivering up to 38 V output with integrated current limiting and open-LED fault response. Use Value: Integrated 40-V MOSFET eliminates external HV switch; thermal foldback prevents overheating during sustained max-brightness use. |
| Handheld Medical Displays | Thermostat & Appliance UI |
Use Scenario: Illuminating critical diagnostic display in portable blood glucose meters and handheld ultrasound devices. IC Role / Device Role / Timing Role: Reliable LED driver with undervoltage lockout (2.3 V) and thermal shutdown (160°C) for safety-critical operation. Use Value: Open LED protection prevents uncontrolled VOUT rise during sensor failure; 204-mV reference ensures precise current accuracy across temperature. | Use Scenario: Backlighting segmented or character LCDs in home appliances (refrigerators, ovens) with wide ambient temperature range. IC Role / Device Role / Timing Role: Low-quiescent-current (0.45 mA) boost driver operating from 2.7–5.5 V supply with robust -40°C to +125°C junction rating. Use Value: Built-in soft-start prevents inrush stress on aging electrolytic input capacitors; RθJA = 263.8°C/W enables operation without heatsink in enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61165DRVR | Higher 40-V output capability but lower 1.0-A switch current limit; no thermal foldback; 1.2-MHz fixed frequency. | Less suitable for high-current or thermally constrained designs; lacks integrated open LED protection. | Select when absolute max output voltage >38 V is required and thermal management is externally handled. |
| LM3409QMY/NOPB | External MOSFET driver; supports higher currents (up to 5 A); adjustable frequency (200 kHz–2 MHz); no integrated PWM dimming filter. | Requires additional components (MOSFET, sense resistor, filter); better for custom high-power or automotive-grade designs. | Select when system demands >1.2-A LED current or programmable frequency/thermal thresholds beyond TPS92360DCKR's fixed architecture. |
Compared with TPS61165DRVR and LM3409QMY/NOPB, the TPS92360DCKR delivers superior integration (single-chip 38-V/1.2-A solution), built-in analog PWM dimming, and active thermal foldback - reducing BOM count and simplifying layout for space- and cost-sensitive portable displays.
Availability
TPS92360DCKR is available at Aetrix Electronics and suitable for smartphone backlighting, tablet backlighting, and handheld medical equipment requiring stable component supply, consistent parametric performance, and long-term production support.
Supply support for TPS92360DCKR 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 decades of expertise in precision power conversion ICs.
The TPS92360DCKR belongs to TI's LED backlight driver product line, engineered specifically for high-efficiency, space-constrained portable display applications where reliability, thermal resilience, and integrated protection are critical.
FAQ
What is the maximum LED string voltage supported by the TPS92360DCKR?
TPS92360DCKR supports up to 38 V output voltage, sufficient to drive 10-series white LEDs assuming typical forward voltage of 3.8 V per LED. The internal 40-V rated MOSFET provides headroom for transient overshoot and process variation, and open LED protection clamps output if voltage exceeds 37.5 V.
How does PWM dimming work on the TPS92360DCKR without causing audible noise?
TPS92360DCKR implements true analog dimming: the CTRL pin PWM signal modulates an internal low-pass filtered reference voltage applied to the FB pin, resulting in smooth DC current adjustment. Unlike direct PWM switching of the LED current, this method avoids mechanical vibration in output capacitors and eliminates audible coil whine.
What is the purpose of the 204-mV feedback reference voltage in the TPS92360DCKR?
The 204-mV reference voltage in TPS92360DCKR sets the regulated voltage across the external RSET resistor, enabling precise LED current programming (ILED = 204 mV / RSET). This low reference minimizes power loss in RSET, improves accuracy, and reduces thermal drift compared to higher-voltage references.
Does the TPS92360DCKR require external compensation components?
No, TPS92360DCKR features internal compensation optimized for stability with standard 4.7–10 µH inductors and ceramic output capacitors. No external RC networks or compensation pins are needed, simplifying design and reducing bill-of-materials for portable backlight applications.
What thermal protection mechanisms are built into the TPS92360DCKR?
TPS92360DCKR incorporates dual thermal safeguards: (1) thermal foldback that begins reducing current limit above 100°C junction temperature, and (2) hard thermal shutdown at 160°C with automatic recovery after 15°C hysteresis. These functions protect the IC during sustained high-power operation in confined enclosures.
TPS92360DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 2.7V ~ 38V
- Current - Output / Channel:
- 1.2A
- Frequency:
- 1.2MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TPS92360DCKR FAQ
1.How can I place an order for TPS92360DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92360DCKR 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 TPS92360DCKR reliable?
The price and inventory of TPS92360DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92360DCKR is usually 5 days.
3.What payment methods are accepted for TPS92360DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92360DCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92360DCKR?
TPS92360DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92360DCKR 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 TPS92360DCKR?
For technical support, including TPS92360DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92360DCKR requirements.
6.How does Aetrix verify that TPS92360DCKR is sourced from the original manufacturer or authorized distributors?
All TPS92360DCKR 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 TPS92360DCKR meets industry standards.
7.What is the process for return or replacement of TPS92360DCKR?
All TPS92360DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TPS92360DCKR, 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 TPS92360DCKR part is unused and in its original packaging.
Return procedure for TPS92360DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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