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Texas Instruments TPS61180RTERG4
- Part No.:
- TPS61180RTERG4
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TPS61180RTERG4.pdf
- Description:
- IC LED DRV RGLTR PWM 25MA 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,967
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Product details
Overview
TPS61180RTERG4 from Texas Instruments is a high-efficiency WLED backlight driver IC with integrated 1.5 A/40 V boost MOSFET, six 25 mA current sinks, true shutdown, and 1.0 MHz switching frequency. It supports up to 10-series WLED strings in notebook LCD displays and delivers <3% current matching accuracy under PWM dimming.
For engineers reviewing the TPS61180RTERG4 datasheet, TPS61180RTERG4 pinout, TPS61180RTERG4 application, or TPS61180RTERG4 equivalent, key selection criteria include input voltage range (5–24 V), integrated PFET driver for battery isolation, VO auto-adaptive regulation, WLED open/short protection, and minimized output ripple during 100 Hz–1 kHz PWM dimming.
Technical Context
The TPS61180RTERG4 implements current-mode PWM control with integrated loop compensation and soft-start, enabling stable operation across 5–24 V input and up to 38 V output. Its boost regulator dynamically adjusts VO to maintain 400 mV on the lowest IFB pin, minimizing power loss across varying WLED forward voltages.
It features dedicated fault handling: overvoltage protection (39 V typical), short-circuit detection (1.7–2.5 V VIN–VO threshold), and thermal shutdown (160 °C). Unlike TPS61181/2, it requires an external 2.7–3.6 V supply on Cin and lacks an internal LDO - reducing quiescent loss but mandating separate biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5 V to 24 V - supports wide battery input including 2-cell Li-ion up to 24 V industrial rails. |
| Switching Frequency | 1.0 MHz (±10%) - enables compact 4.7–10 μH inductor and low-profile ceramic output capacitors. |
| Boost MOSFET | Integrated 1.5 A / 40 V N-channel - eliminates external switch, simplifies layout, and supports ≥10 WLEDs in series. |
| Current Sink Accuracy | ±2.5% matching (max–min)/avg - ensures uniform brightness across 6 independent WLED strings. |
| PWM Dimming Range | 100 Hz to 1 kHz - avoids visible flicker while maintaining linearity; supports 1000:1 range at 100 Hz. |
| Protection Features | OVP (39 V), short-circuit detection (VIN–VO < 2.5 V), thermal shutdown (160 °C), and true shutdown (<18 μA ISD). |
| IC Supply Requirement | External 2.7–3.6 V on Cin pin - no internal LDO; reduces standby power loss vs. TPS61181/2 variants. |
Pinout & Package
TPS61180RTERG4 is housed in a thermally enhanced 16-pin QFN package (3 mm × 3 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are validated per TI SLVS801E Rev. April 2013.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (Pin 1) | Power ground | Internal connection to MOSFET source; must be low-impedance path to minimize switching noise and thermal rise. |
| SW (Pin 2) | Switch node | Drain of internal MOSFET; connects to inductor and Schottky diode - critical for EMI and efficiency. |
| VBAT (Pin 3) | Battery input | Main power input (5–24 V); supplies Fault pull-up and short-circuit sensing; UVLO triggers at 4.5 V. |
| VO (Pin 4) | Boost output monitor | Feedback point for auto-adaptive regulation; connected to WLED string anode; OVP sensed here. |
| ISET (Pin 5) | Current programming | Sets total WLED current via external resistor (e.g., 62 kΩ → 20 mA per channel); VISET = 1.229 V typ. |
| Cin (Pin 6) | IC supply input | Requires external 2.7–3.6 V; UVLO at 2.4 V; bypass with 0.1 μF capacitor mandatory for stability. |
| IFB1–IFB6 (Pins 7–9, 12–14) | Current sink feedback | Each connects to WLED cathode; IC regulates lowest IFB to 400 mV; max 25 mA/sink. |
| GND (Pin 10) | Signal ground | Reference for logic and analog circuits; separate from PGND to avoid noise coupling into feedback. |
| DCTRL (Pin 11) | PWM dimming input | Accepts 100 Hz–1 kHz logic-level signal; duty cycle directly controls WLED on/off timing. |
| EN (Pin 15) | Enable control | Logic-high enables IC; 32 ms low pulse initiates shutdown; not tied to Cin (no LDO present). |
| Fault (Pin 16) | PFET gate driver | Drives external PFET between VBAT and inductor; disconnects battery during fault or shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-adaptive boost output | VO dynamically tracks minimum WLED forward voltage by regulating lowest IFB to 400 mV - improves efficiency by minimizing voltage overhead. |
| True shutdown mode | EN low disables all circuitry and pulls Fault high to isolate battery via external PFET - leakage <18 μA, critical for battery life. |
| WLED open/short protection | Shuts down on any IFB overvoltage (>17 V) or zero-current detection - prevents damage from failed strings without LDO dependency. |
| Low-audible-noise PWM dimming | Minimizes AC ripple across full 100 Hz–1 kHz dimming range - suppresses ceramic capacitor piezo noise in thin-notebook designs. |
| Integrated loop compensation | Eliminates external compensation components - ensures stable regulation across 5–24 V input and 16–38 V output with recommended 4.7–10 μH inductors. |
Applications
| Notebook LCD Backlight | UMPC LCD Backlight |
|---|---|
Use Scenario: Driving 6–10 white LEDs in series for 13.3″–15.6″ notebook displays with 1000:1 brightness control. IC Role / Device Role / Timing Role: Primary WLED current regulator and adaptive boost controller; manages PWM dimming timing and fault isolation. Use Value: Delivers <3% current matching across channels and maintains >85% efficiency at 120 mA total load - extends battery runtime and ensures uniform screen luminance. |
Use Scenario: Powering compact 7″–10″ UMPC displays where board space and thermal envelope are constrained. IC Role / Device Role / Timing Role: Integrated boost + six current sinks replace discrete solutions; 1.0 MHz switching enables miniaturized passives. Use Value: Reduces BOM count by eliminating external MOSFET, compensation network, and LDO - cuts PCB area by ~35% vs. multi-chip alternatives. |
| Media Form Factor Display | Industrial Panel Backlight |
Use Scenario: Backlighting portable media players and tablets requiring flicker-free dimming and low acoustic noise. IC Role / Device Role / Timing Role: PWM-controlled current sink with optimized ripple suppression; synchronizes dimming edge transitions to minimize EMI. Use Value: Achieves <10 mVpp output ripple at 50% duty/200 Hz - eliminates audible capacitor squeal in handheld enclosures. |
Use Scenario: Reliable backlight for industrial HMIs operating in –40°C to +85°C ambient with frequent power cycling. IC Role / Device Role / Timing Role: Fault-tolerant driver with thermal shutdown, OVP, and true shutdown - sustains operation through brownouts and load transients. Use Value: Maintains regulated current despite input dips to 5 V and output loads up to 38 V - ensures display visibility during unstable power conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar WLED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61181RTER | Includes integrated LDO for Cin; same 1.0 MHz frequency; identical pinout and protection features. | Eliminates need for external 3.3 V rail - simplifies power tree but adds ~2 mA quiescent loss. | Select when system lacks clean 2.7–3.6 V supply and board space allows minor efficiency trade-off. |
| TPS61182RTER | 1.3 MHz switching (non-overlapping with TPS61180); built-in LDO; identical current sink specs and protection. | Enables smaller inductors/caps and reduces EMI overlap risk in multi-rail systems. | Select when higher frequency improves EMI compliance or allows tighter passive component tolerances. |
Compared with TPS61180RTERG4, TPS61181RTER removes the external bias requirement at the cost of higher IQ, while TPS61182RTER offers higher-frequency operation for denser layouts - both retain identical WLED regulation accuracy, fault response, and 16-pin QFN compatibility.
Availability
TPS61180RTERG4 is available at Aetrix Electronics and suitable for notebook backlight design, UMPC display integration, and industrial panel lighting requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS61180RTERG4 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 and display interface solutions.
The TPS6118x family was designed specifically for high-efficiency, low-noise WLED backlighting in portable media devices - prioritizing current matching, adaptive voltage regulation, and robust fault handling in space-constrained designs.
FAQ
What is the required external supply voltage for TPS61180RTERG4?
The TPS61180RTERG4 requires an external 2.7 V to 3.6 V DC supply connected to the Cin pin. This differs from TPS61181/2 variants, which integrate an LDO. The Cin supply powers all internal analog and logic circuits; a 0.1 μF bypass capacitor is mandatory. Under-voltage lockout activates below 2.4 V, disabling the IC.
How does TPS61180RTERG4 achieve auto-adaptive boost output voltage?
The TPS61180RTERG4 continuously monitors all six IFB pins and regulates the boost output (VO) to maintain exactly 400 mV on the lowest-voltage IFB pin. This dynamic adjustment minimizes excess voltage headroom across the WLED string, directly improving power efficiency - especially critical when forward voltages vary with temperature or aging.
Does TPS61180RTERG4 support true shutdown, and how is it implemented?
Yes, TPS61180RTERG4 provides true shutdown: pulling EN low disables all internal circuitry and drives the Fault pin high, turning off an external PFET between VBAT and the inductor. This physically isolates the battery, limiting shutdown current to ≤18 μA - essential for preserving battery charge during system sleep modes.
What protection features are integrated into TPS61180RTERG4?
TPS61180RTERG4 integrates overvoltage protection (39 V on VO), short-circuit detection (triggered when VO falls >2.5 V below VBAT), thermal shutdown (160 °C), and WLED open/short detection via IFB pin monitoring. All protections force shutdown - no latch-off or auto-retry - ensuring fail-safe behavior in critical display applications.
Can TPS61180RTERG4 drive fewer than six WLED strings?
Yes. For unused IFB pins, connect a 10 kΩ resistor from the pin to GND. The TPS61180RTERG4 detects this and excludes the channel from regulation - unlike TPS61181/2, which accept open or grounded IFB pins. This preserves accurate current matching across active strings without requiring dummy loads.
TPS61180RTERG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WFQFN 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:
- 6
- Voltage - Supply (Min):
- 5V
- Voltage - Supply (Max):
- 24V
- Voltage - Output:
- 38V
- Current - Output / Channel:
- 25mA
- Frequency:
- 1MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WQFN (3x3)
TPS61180RTERG4 FAQ
1.How can I place an order for TPS61180RTERG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61180RTERG4 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 TPS61180RTERG4 reliable?
The price and inventory of TPS61180RTERG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61180RTERG4 is usually 5 days.
3.What payment methods are accepted for TPS61180RTERG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61180RTERG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61180RTERG4?
TPS61180RTERG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61180RTERG4 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 TPS61180RTERG4?
For technical support, including TPS61180RTERG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61180RTERG4 requirements.
6.How does Aetrix verify that TPS61180RTERG4 is sourced from the original manufacturer or authorized distributors?
All TPS61180RTERG4 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 TPS61180RTERG4 meets industry standards.
7.What is the process for return or replacement of TPS61180RTERG4?
All TPS61180RTERG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61180RTERG4, 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 TPS61180RTERG4 part is unused and in its original packaging.
Return procedure for TPS61180RTERG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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