My Inquiry
My Account
Texas Instruments TPS61180RTETG4
- Part No.:
- TPS61180RTETG4
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TPS61180RTETG4.pdf
- Description:
- IC LED DRV RGLTR PWM 25MA 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,807
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS61180RTETG4 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, and true shutdown capability. It operates from 5 V to 24 V input, supports up to 10-series WLED strings (120 mA total), and delivers auto-adaptive boost output voltage regulation for notebook LCD display backlighting.
For engineers reviewing the TPS61180RTETG4 datasheet, TPS61180RTETG4 pinout, TPS61180RTETG4 application, or TPS61180RTETG4 equivalent, key selection criteria include its external 3.3 V IC supply requirement, 1.0 MHz switching frequency, 400 mV IFB regulation threshold, 2.5% current matching across six channels, and dedicated Fault pin for external PFET driver control in battery-isolation fault protection.
Technical Context
The TPS61180RTETG4 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 only ~400 mV headroom above the lowest IFB voltage, minimizing power loss across varying WLED forward voltages.
It features pulse-by-pulse over-current limiting (1.5 A min), over-voltage protection (39 V typical), short-circuit detection (1.7–2.5 V ΔVBAT–VO), and thermal shutdown (160 °C). Unlike TPS61181/2, it requires an external 3.3 V supply on Cin and shuts down fully upon any open- or over-voltage fault on IFB pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5 V to 24 V - supports wide-range battery inputs including 2-cell Li-ion (8.4 V) and 3-cell (12.6 V) configurations. |
| Switching Frequency | 1.0 MHz (±10%) - enables compact external components (e.g., 4.7 µH inductor, 4.7 µF output cap) and reduces EMI susceptibility. |
| WLED Current Sinks | Six independent 25 mA max sinks - provides precise current regulation with ≤2.5% matching for uniform brightness across multi-string displays. |
| IFB Regulation Threshold | 400 mV (min) - sets minimum feedback voltage for automatic VO adjustment, ensuring minimal power dissipation in current sinks. |
| IC Supply Requirement | External 2.7–3.6 V on Cin pin - eliminates LDO losses, improving light-load efficiency versus integrated-LDO variants (TPS61181/2). |
| Over-Voltage Protection | 38–40 V on VO pin - prevents damage during open-WLED fault conditions; triggers shutdown if all IFB strings are open. |
| Quiescent Current | 1 mA into VBAT (typ), 2 µA shutdown - enables low-power standby in portable systems with battery isolation via external PFET. |
Pinout & Package
TPS61180RTETG4 is housed in a thermally enhanced 16-pin QFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal pad (Pin 16 not assigned; PGND connects internally to thermal pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PGND) | Power ground | Source connection of internal PWM switch; must be low-inductance path to minimize switching noise and thermal rise. |
| 2 (SW) | Switch node | Drain of internal 1.5 A/40 V MOSFET; connects to inductor and Schottky diode - critical for EMI and efficiency layout. |
| 3 (VBAT) | Battery input | Main power input (5–24 V); supplies pull-up for Fault pin and short-circuit detection reference; no internal LDO input. |
| 4 (VO) | Boost output monitor | Feedback point for auto-adaptive output regulation; connects to WLED string anodes - determines VO setpoint. |
| 5 (ISET) | Current programming | Resistor-programmed reference (VISET = 1.229 V typ); sets full-scale WLED current via KISET = 1000 (IOUT = 1000 × ISET). |
| 6 (Cin) | IC supply input | Requires external 2.7–3.6 V supply; bypassed with 0.1 µF capacitor - absence of internal LDO improves light-load efficiency. |
| 7–9, 12–14 (IFB1–IFB6) | Current sink feedback | Cathode connections for six WLED strings; IC regulates lowest IFB to 400 mV - unused pins require 10 kΩ to GND. |
| 10 (GND) | Signal ground | Reference for logic and analog circuitry; separate from PGND to avoid noise coupling into feedback paths. |
| 11 (DCTRL) | PWM dimming input | Accepts 100 Hz–1 kHz logic-level PWM signal; directly controls on/off timing of all six current sinks for brightness control. |
| 15 (EN) | Enable input | Active-high logic control; 32 ms low pulse initiates true shutdown (<50 µA IQ); must not tie to Cin to ensure startup. |
| 16 (Fault) | PFET gate driver | Open-drain output driving external PFET gate; pulls low to connect battery during normal operation; high during fault/shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| True shutdown with PFET driver | Fault pin actively disconnects battery during fault or shutdown, eliminating leakage current and preserving battery life. |
| Auto-adaptive boost output | VO dynamically tracks WLED forward voltage by regulating lowest IFB to 400 mV - reduces power loss and heat in current sinks. |
| WLED open/short protection | Shuts down on any IFB overvoltage (>17 V) or open condition - ensures system safety without external monitoring circuitry. |
| Low-audible-noise PWM dimming | Minimizes output capacitor AC ripple across 100 Hz–1 kHz dimming range - suppresses ceramic capacitor piezoelectric squeal. |
| Integrated soft-start & compensation | Eliminates external compensation components; gradual reference ramp prevents output overshoot and inrush current at startup. |
Applications
| Notebook LCD Backlight | UMPC Display Backlight |
|---|---|
Use Scenario: Driving 6–10 white LEDs in series for 13.3″–15.6″ notebook displays with 1000:1 PWM dimming range. IC Role / Device Role / Timing Role: Primary WLED current controller and adaptive boost regulator; manages brightness, fault isolation, and thermal safety. Use Value: Delivers <3% current mismatch across strings for uniform luminance, while auto-adjusting VO minimizes power loss at partial brightness. |
Use Scenario: Powering compact, high-brightness LCD backlights in ultra-mobile PCs with space-constrained PCB layouts. IC Role / Device Role / Timing Role: Integrated power management IC providing regulated current, battery isolation, and fault reporting in single-chip solution. Use Value: Enables small BOM with only 4.7 µH inductor and 4.7 µF output capacitor - reduces board area versus discrete boost + current source designs. |
| Media Form Factor Display | Industrial Panel Backlight |
Use Scenario: Backlighting media tablets and convertible laptops requiring flicker-free dimming and robust short-circuit protection. IC Role / Device Role / Timing Role: High-precision current sink array with real-time IFB monitoring and dynamic VO scaling for variable LED VF. Use Value: Maintains consistent brightness across temperature (-40°C to +85°C ambient) due to tight current matching and 400 mV IFB reference stability. |
Use Scenario: Reliable backlight control in industrial HMIs where long-term stability and fault resilience are critical under wide input voltage swings. IC Role / Device Role / Timing Role: Fault-tolerant WLED driver with true shutdown, over-voltage lockout, and thermal shutdown - meets extended lifecycle requirements. Use Value: Prevents catastrophic failure during open-circuit or short-circuit events via immediate PFET disconnection and IC shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar WLED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61181RTET | Includes integrated 3.3 V LDO; same 1.0 MHz switching; identical pinout and IFB architecture. | Eliminates need for external 3.3 V rail but adds LDO dropout loss - preferred when system lacks clean 3.3 V supply. | Select TPS61181RTET when simplifying power tree outweighs minor efficiency penalty at light load. |
| TPS61182RTET | 1.3 MHz switching (vs. 1.0 MHz); otherwise identical LDO, pinout, and protection features. | Enables smaller passive components and shifts EMI spectrum - useful in noise-sensitive RF coexistence designs. | Choose TPS61182RTET when higher switching frequency improves EMI compliance or allows tighter layout constraints. |
Compared with TPS61181RTET and TPS61182RTET, the TPS61180RTETG4 offers highest light-load efficiency due to external IC supply, but requires a dedicated 3.3 V rail and lacks LDO-based fault recovery - making it optimal for battery-powered notebooks prioritizing runtime over design simplicity.
Availability
TPS61180RTETG4 is available at Aetrix Electronics and suitable for notebook LCD backlight, UMPC display, and industrial panel backlight applications requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS61180RTETG4 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 TPS61180RTETG4 belongs to TI's WLED backlight driver product line, engineered specifically for high-efficiency, multi-string LCD display illumination in portable computing devices with stringent thermal and reliability requirements.
FAQ
What is the required IC supply voltage for TPS61180RTETG4?
The TPS61180RTETG4 requires an external 2.7 V to 3.6 V supply connected to the Cin pin. Unlike TPS61181/2, it has no internal LDO - this design reduces quiescent power loss, especially beneficial in battery-operated notebooks where light-load efficiency directly impacts runtime. The Cin pin includes a 2.2 V (typ) UVLO threshold to ensure reliable startup.
How does TPS61180RTETG4 handle open-WLED faults?
The TPS61180RTETG4 shuts down completely upon detecting any open-WLED condition - identified by zero current on an IFB pin exceeding the 0.6 V no-use threshold. This differs from TPS61181/2, which disables only the affected string and continues regulating remaining strings. Full shutdown ensures fail-safe behavior in safety-critical portable applications.
What is the maximum number of WLEDs supported by TPS61180RTETG4?
The TPS61180RTETG4 supports up to 10 WLEDs in series per string, with six independent current sinks allowing up to 60 total WLEDs. Its 38 V maximum VO rating and auto-adaptive output regulation enable efficient operation across varying forward voltages - typical configurations use 6–10 LEDs at ~3.2 V each (19.2–32 V total).
Does TPS61180RTETG4 support PWM dimming, and what is its frequency range?
Yes, TPS61180RTETG4 supports logic-level PWM dimming via the DCTRL pin across 100 Hz to 1 kHz. Within this range, it maintains linear dimming response and minimizes audible capacitor noise by suppressing output ripple. At 100 Hz, it achieves 0.1% duty cycle (1000:1 range); at 1 kHz, minimum duty is ~1% (100:1 range).
What protection features are integrated in TPS61180RTETG4?
The TPS61180RTETG4 integrates over-voltage protection (38–40 V on VO), over-current limiting (1.5 A min), short-circuit detection (1.7–2.5 V ΔVBAT–VO), thermal shutdown (160 °C), and WLED open/short detection on all six IFB channels. Its Fault pin drives an external PFET to isolate the battery during any fault - enabling true shutdown with near-zero leakage current.
TPS61180RTETG4 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)
TPS61180RTETG4 FAQ
1.How can I place an order for TPS61180RTETG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61180RTETG4 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 TPS61180RTETG4 reliable?
The price and inventory of TPS61180RTETG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61180RTETG4 is usually 5 days.
3.What payment methods are accepted for TPS61180RTETG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61180RTETG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61180RTETG4?
TPS61180RTETG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61180RTETG4 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 TPS61180RTETG4?
For technical support, including TPS61180RTETG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61180RTETG4 requirements.
6.How does Aetrix verify that TPS61180RTETG4 is sourced from the original manufacturer or authorized distributors?
All TPS61180RTETG4 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 TPS61180RTETG4 meets industry standards.
7.What is the process for return or replacement of TPS61180RTETG4?
All TPS61180RTETG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61180RTETG4, 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 TPS61180RTETG4 part is unused and in its original packaging.
Return procedure for TPS61180RTETG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS61180RTETG4 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…
