My Inquiry
My Account
Texas Instruments TLED2043IGQNR
- Part No.:
- TLED2043IGQNR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-VFBGA
- Datasheet:
-
TLED2043IGQNR.pdf
- Description:
- IC LED DRIVER LINEAR 50MA 20BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,026
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLED2043IGQNR from Texas Instruments is a 4-channel white LED driver IC designed as a current-sink controller for LCD backlighting in portable electronics. It integrates four n-channel MOSFETs (RDS-ON ≤ 6 Ω), supports 2.7–5.5 V input, delivers up to 50 mA per channel, and achieves up to 89% efficiency at 3.3 V battery input. It is used in cell phone and PDA display backlight systems requiring adaptive brightness control via battery-voltage-proportional current regulation.
For engineers reviewing the TLED2043IGQNR datasheet, TLED2043IGQNR pinout, TLED2043IGQNR application, or TLED2043IGQNR equivalent, key selection criteria include its integrated FET architecture, SW-controlled power-switching capability (1 µA OFF-state current), current-control amplifier with 5 mV max input offset, and compatibility with external voltage references for analog/digital brightness tuning.
Technical Context
The TLED2043IGQNR implements a unified current-control amplifier that drives four gate buffers to regulate drain currents of internal n-channel FETs proportionally to the difference between battery voltage (applied to IN+) and a stable reference (applied to IN–). Its feedback loop uses FB connected to IN–, enabling precise current matching across all four channels.
Three integrated power switches (VIN1/VIN2/VIN3 → VOUT1/VOUT2/VOUT3) operate synchronously under SW pin control (active-low), delivering ≤0.1 V dropout and supporting system-level power gating. The device operates over –40°C to 85°C and is characterized with 78°C/W thermal impedance in the GQN package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel count | 4 independent current-sink outputs for white LEDs |
| RDS-ON (max) | 6 Ω - enables low-loss current sinking at 20 mA per FET |
| Input voltage range | 2.7 V to 5.5 V - compatible with single-cell Li-ion and Li-poly battery rails |
| Output current (per channel) | Up to 50 mA - supports high-brightness LED strings with external current-setting resistors |
| OFF-state supply current | 1 µA max - achieved by opening internal power switches, critical for standby power budgeting |
| Efficiency | Up to 89% at 3.3 V input - measured end-to-end (PLED/PBATTERY) in typical application circuit |
| Operating temperature | –40°C to +85°C - qualified for consumer portable equipment environments |
Pinout & Package
Package: 20-pin MicroStar Jr. BGA (GQN), 3.5 mm × 3.5 mm, 0.5 mm pitch, bottom-side solder balls.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D1–D4 | Drain terminals of internal n-channel FETs | Connect to anode of each white LED; sink current to GND through S1–S4 |
| S1–S4 | Source terminals of internal n-channel FETs | Internally tied to GND; form low-side current paths for LED biasing |
| VIN1–VIN3 | Inputs to internal power switches | VIN1 powers device core; VIN2/VIN3 optionally disconnect reference circuitry or enable analog control |
| VOUT1–VOUT3 | Outputs of internal power switches | VOUT1 = VIN1–0.1 V max; used to feed regulated supply to internal blocks or external references |
| SW | Active-low switch enable | Low = all three switches ON; High/Open = all OFF; controls 1 µA standby mode |
| IN+, IN– | Differential inputs to current-control amplifier | IN+ typically connected to battery; IN– to reference; sets proportional LED current |
| FB | Feedback node | Internally connected to IN–; provides external access for stability compensation or reference injection |
| GND | Ground reference | Common return for all FET sources, amplifier, and switches; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| Integrated n-channel FETs with RDS-ON ≤ 6 Ω | Eliminates need for 4 discrete MOSFETs and gate drivers, reducing board area and BOM cost |
| Battery-voltage-proportional current control | Automatically scales LED current as battery discharges, extending runtime without software intervention |
| Triple synchronous power switches (1 µA OFF-state) | Enables full system power gating-disabling core, reference, and analog control blocks independently |
| Current-control amplifier with 5 mV max input offset | Ensures <±3% channel-to-channel current mismatch across temperature and supply variation |
| Support for analog/digital brightness control | IN+/IN– accept external voltage or resistor-divider adjustments; Switch 3 enables clean analog signal routing |
Applications
| Cell Phone LCD Backlight | PDA Display Illumination |
|---|---|
|
Use Scenario: Driving four white LEDs behind a color TFT LCD in a GSM/UMTS handset during active display use and standby. IC Role / Device Role / Timing Role: Current-sink driver regulating LED brightness via battery-proportional current control and SW-gated power-down. Use Value: Extends talk time by 12–18% versus fixed-current drivers due to adaptive current scaling and 1 µA shutdown current. |
Use Scenario: Powering dual-zone backlight in a handheld PDA with dynamic brightness adjustment based on ambient light sensor output. IC Role / Device Role / Timing Role: Four-channel current sink with IN– voltage programmability enabling closed-loop brightness control. Use Value: Enables seamless transition between indoor (high brightness) and outdoor (low brightness) modes without flicker or step artifacts. |
| Palmtop PC Display | Portable Media Player UI Backlight |
|
Use Scenario: Backlighting high-resolution grayscale or color LCD in clamshell-form-factor palmtop PCs with lid-open/closed detection. IC Role / Device Role / Timing Role: LED driver with SW pin synchronized to lid-open signal to enable/disable backlight instantly. Use Value: Reduces idle power draw by >99.9% when lid is closed, eliminating need for separate PMIC sequencing. |
Use Scenario: Illuminating OLED or LCD status indicators and navigation buttons in audio/video players with user-selectable brightness levels. IC Role / Device Role / Timing Role: Four-channel sink supporting mixed LED types (white + RGB indicator) with shared current control loop. Use Value: Allows consistent color rendering across indicators using same reference voltage, minimizing calibration overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61160DRVR | Boost converter-based; requires external inductor; 26 V output capability; no integrated FETs for direct current sinking | Used where battery voltage falls below LED forward voltage; not suitable for direct battery-fed current sinking | Select TPS61160DRVR only if VBAT < VF(LED); TLED2043IGQNR is superior for 3.3–4.2 V single-cell operation with minimal external components |
| LM3409QMYX/NOPB | High-side buck controller; external MOSFET required; supports up to 1 A; no integrated current-sink topology | Targeted at automotive or industrial LED arrays; lacks battery-proportional control and ultra-low shutdown current | LM3409QMYX/NOPB suits high-power (>200 mA) applications; TLED2043IGQNR is optimized for space-constrained, low-quiescent portable designs |
Compared with TPS61160DRVR and LM3409QMYX/NOPB, the TLED2043IGQNR offers direct battery-connected current sinking without magnetics, 1 µA shutdown, and built-in adaptive brightness-making it uniquely suited for compact, battery-life-critical portable displays.
Availability
TLED2043IGQNR is available at Aetrix Electronics and suitable for cell phone backlighting, PDA display illumination, palmtop PC UI lighting, and portable media player indicator driving requiring stable component supply across extended production lifecycles.
Supply support for TLED2043IGQNR 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies for industrial, automotive, and consumer markets.
The TLED2043IGQNR belongs to TI's portable LED driver product line, engineered specifically for low-voltage, multi-channel white LED backlighting in space- and power-constrained handheld devices.
FAQ
What is the maximum continuous drain current per channel for the TLED2043IGQNR?
The TLED2043IGQNR supports a maximum continuous drain current of 50 mA per channel, as specified in the Absolute Maximum Ratings table. This rating applies across the full operating temperature range (–40°C to +85°C) and ensures reliable current sinking into white LED loads without thermal derating under typical PCB layout conditions. The TLED2043IGQNR maintains this capability while delivering ≤6 Ω RDS-ON at 20 mA, minimizing conduction loss.
How does the TLED2043IGQNR achieve battery-voltage-proportional LED current control?
The TLED2043IGQNR uses an internal current-control amplifier with IN+ connected to the battery rail (via VIN1/Switch 1) and IN– connected to a stable external reference voltage. The amplifier output drives all four FET gates in unison, making LED current directly proportional to (VBAT – VREF). As battery voltage declines, the current decreases linearly-reducing power consumption without firmware intervention. The TLED2043IGQNR's 5 mV max input offset ensures tight tracking accuracy across temperature.
Can the TLED2043IGQNR drive LEDs with different forward voltages across its four channels?
Yes-the TLED2043IGQNR drives each LED as an independent current sink, so variations in LED VF do not affect current regulation. Each channel's current is set solely by the amplifier's differential input and feedback configuration, not by load voltage. However, all four FETs share the same gate drive, so the highest VF in the string determines the minimum required supply headroom at VOUT1. The TLED2043IGQNR's 5.5 V absolute max VDS supports typical white LED strings up to ~4 V.
What is the purpose of the SW pin on the TLED2043IGQNR, and how should it be driven?
The SW pin is an active-low enable for three internal power switches. When pulled low (≤0.3 × VDD), all switches close-powering the core, reference, and analog control blocks. When high (≥0.7 × VDD) or left open, all switches open, reducing total supply current to ≤1 µA. For reliable operation, drive SW with a clean CMOS-level signal referenced to the device's GND; avoid floating states in production hardware. The TLED2043IGQNR's function table confirms "Open = All OFF" behavior.
Is the TLED2043IGQNR still in production, and what is its lifecycle status?
Texas Instruments lists TLED2043IGQNR as OBSOLETE in its official packaging information, indicating discontinued production. However, Aetrix Electronics maintains legacy inventory and supports design-in continuity through controlled distribution, traceable sourcing, and lifecycle coordination services. Customers using TLED2043IGQNR should consult Aetrix for remaining stock levels, last-time-buy planning, and migration guidance-especially given its unique combination of integrated FETs, ultra-low shutdown current, and battery-proportional control not replicated in newer TI portfolios.
TLED2043IGQNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-VFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 5.5V
- Current - Output / Channel:
- 50mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-BGA MICROSTAR JUNIOR (4x3)
TLED2043IGQNR FAQ
1.How can I place an order for TLED2043IGQNR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLED2043IGQNR 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 TLED2043IGQNR reliable?
The price and inventory of TLED2043IGQNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLED2043IGQNR is usually 5 days.
3.What payment methods are accepted for TLED2043IGQNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLED2043IGQNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLED2043IGQNR?
TLED2043IGQNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLED2043IGQNR 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 TLED2043IGQNR?
For technical support, including TLED2043IGQNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLED2043IGQNR requirements.
6.How does Aetrix verify that TLED2043IGQNR is sourced from the original manufacturer or authorized distributors?
All TLED2043IGQNR 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 TLED2043IGQNR meets industry standards.
7.What is the process for return or replacement of TLED2043IGQNR?
All TLED2043IGQNR units undergo pre-shipment inspection (PSI). If there is an issue with TLED2043IGQNR, 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 TLED2043IGQNR part is unused and in its original packaging.
Return procedure for TLED2043IGQNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLED2043IGQNR 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…
