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Texas Instruments TPS60255RTER
- Part No.:
- TPS60255RTER
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TPS60255RTER.pdf
- Description:
- IC LED DRV RGLTR SGL WR 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,902
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Product details
Overview
TPS60255RTER from Texas Instruments is a high-efficiency, constant-frequency charge pump DC/DC converter for driving seven white LEDs in portable devices. It supports 2.7 V to 6.0 V input, delivers six 25 mA and one 80 mA regulated current sinks, and auto-switches between 1× and 1.5× modes to maintain regulation across lithium battery discharge - used in multi-display handhelds requiring precise LED current control with minimal external components.
For engineers reviewing the TPS60255RTER datasheet, TPS60255RTER pinout, TPS60255RTER application, or TPS60255RTER equivalent, this page provides verified technical context, validated pin functions, confirmed efficiency vs. input voltage behavior, real-world open-lamp detection operation, and accurate EasyScale™ interface timing parameters - all directly extracted from TI's SLVS825 production datasheet.
Technical Context
The TPS60255RTER implements adaptive 1×/1.5× charge-pump mode switching based on real-time monitoring of current-sink cathode voltages (GAx/GBx/GC), transitioning at 105–120 mV (gear-up) and 520–590 mV (gear-down) thresholds to sustain regulation. Its 750 kHz fixed-frequency oscillator drives two 1 µF flying capacitors in reconfigurable series-parallel topology.
It integrates seven independent current sinks grouped as GA1–GA4 (25 mA each), GB1–GB2 (25 mA each), and GC (80 mA), each programmable via a single-wire EasyScale™ interface supporting 32-step dimming, ON/OFF control, open-lamp detection, and four-mode operation (auto, forced 1×, forced 1.5×, shutdown).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 6.0 V - fully covers single-cell Li-ion battery operating range (3.0–4.2 V nominal, down to 2.7 V cutoff) |
| Charge Pump Modes | Auto-switching 1× and 1.5× - eliminates manual mode selection; maintains regulation without efficiency penalty at mid-battery voltage |
| LED Current Sinks | Six 25 mA + one 80 mA - enables flexible partitioning across display backlight (Group A), sub-display/keypad (Group B), and flash/torch (Group C) |
| Switching Frequency | 625–875 kHz (typ. 750 kHz) - allows use of compact 1 µF ceramic flying capacitors and minimizes EMI in RF-sensitive handhelds |
| Interface | Single-wire EasyScale™ - supports full brightness control, group enable/disable, and open-lamp status reporting using only one GPIO |
| Open Lamp Detection | Integrated per-channel comparator - prevents false 1.5× mode activation when LEDs are unpopulated, preserving efficiency in variant SKUs |
| Package | 16-pin 3 mm × 3 mm QFN (RTE) - 0.8 mm height enables ultra-thin mobile phone designs with minimal PCB footprint |
Pinout & Package
TPS60255RTER is housed in a thermally enhanced 16-pin QFN package (3 mm × 3 mm, 0.8 mm height) with exposed thermal pad. Pin numbering follows top-view layout per TI SLVS825.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT | Output node | Connects to output capacitor and LED anodes; supplies regulated boosted voltage to all current sinks |
| VIN | Power input | Accepts 2.7–6.0 V supply; powers internal circuitry and flying capacitor charging path |
| ENA | Hardware enable | Active-high digital control: logic high enables device; low disables all outputs and reduces quiescent current to 1 µA |
| IF | Serial interface | Single-wire EasyScale™ bidirectional line for register access, dimming, and ON/OFF commands |
| GA1–GA4, GB1–GB2, GC | Current sink outputs | Seven dedicated cathode connections; each sinks programmed current (25 mA max for GA/GB, 80 mA for GC) |
| GND | Reference ground | System return path; must be low-impedance connection to minimize current-sink voltage error |
| C1−, C1+, C2−, C2+ | Flying capacitor terminals | Four pins for two external 1 µF ceramic capacitors; configured in series during charge, parallel+series during boost |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive 1×/1.5× mode switching | Eliminates need for external voltage monitoring or mode-select logic; sustains LED regulation across full battery discharge curve |
| Per-group current programming | Three independent registers (Group A, B, C) allow simultaneous but distinct brightness settings for display, keypad, and torch functions |
| Open lamp detection | Prevents erroneous 1.5× mode entry when LEDs are omitted in design variants - avoids unnecessary efficiency loss and thermal stress |
| Low dropout current sinks | 60–100 mV dropout enables operation with short LED strings even at low VIN, maximizing time spent in high-efficiency 1× mode |
| Thermal shutdown & overcurrent protection | Protects against sustained overload or poor heatsinking; device resumes normal operation after temperature recovery |
Applications
| Cellular Phone Display Backlight | Multi-display Handheld UI Lighting |
|---|---|
Use Scenario: Driving four white LEDs (GA1–GA4) for main LCD backlight and two LEDs (GB1–GB2) for secondary display in clamshell or slide-type phones. IC Role / Device Role / Timing Role: Constant-current WLED driver with auto mode switching; regulates current independently per group while maintaining <±5% matching across 6 LEDs at 15.3 mA. Use Value: Enables consistent brightness across main and sub-displays despite battery voltage sag from 4.2 V to 2.7 V, with no firmware intervention required. | Use Scenario: Powering separate LED groups for main display, keypad, and camera flash in bar-style handhelds using a single IC. IC Role / Device Role / Timing Role: Multi-channel LED controller with Group C (GC) configured for 80 mA torch mode; Groups A/B dimmed via EasyScale™ for UI feedback. Use Value: Reduces BOM count by consolidating three lighting functions into one 3 mm × 3 mm QFN, eliminating discrete current-setting resistors and multiple drivers. |
| Portable Navigation Display | Industrial Handheld Keypad Illumination |
Use Scenario: Backlighting high-brightness transflective LCDs in GPS units where ambient light varies widely and battery life is critical. IC Role / Device Role / Timing Role: High-efficiency charge pump delivering stable 25.2 mA to four LEDs; achieves >80% efficiency at 3.5 V input and 25.2 mA load per string. Use Value: Extends runtime by minimizing power loss during low-battery operation (2.9–3.4 V), where 1.5× mode ensures regulation without compromising efficiency. | Use Scenario: Providing uniform, flicker-free illumination for membrane keypads in ruggedized industrial handhelds operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Temperature-stable current sink with ±10% accuracy from –40°C to +85°C; uses internal reference unaffected by supply ripple. Use Value: Guarantees legible keypad visibility under extreme temperatures without recalibration or external compensation circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar WLED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60250RTER | Same 16-pin QFN package and EasyScale™ interface, but supports only six 25 mA sinks (no 80 mA GC channel) | Lacks torch/flash capability; suitable only for dual-display or keypad-only lighting, not combined display+torch systems | Select when GC functionality is unnecessary and cost reduction is prioritized over design flexibility |
| LM3632DSGR | 2.7–5.5 V input, 750 kHz switching, six 25 mA sinks, I²C interface instead of EasyScale™; no 80 mA channel | Requires two GPIOs (SCL/SDA); lacks open-lamp detection and auto 1×/1.5× transition logic | Choose when existing platform uses I²C infrastructure and firmware already supports register-based LED control |
Compared with TPS60255RTER, TPS60250RTER removes the 80 mA GC channel but retains identical pinout and interface, while LM3632DSGR replaces EasyScale™ with I²C and omits adaptive mode switching - making TPS60255RTER uniquely suited for space-constrained, battery-sensitive designs requiring integrated torch capability and autonomous efficiency optimization.
Availability
TPS60255RTER is available at Aetrix Electronics and suitable for cellular phone backlighting, portable navigation display illumination, and multi-display handheld UI lighting requiring stable component supply across long production cycles.
Supply support for TPS60255RTER 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 specializing in analog and embedded processing technologies, with leadership in power management ICs for portable electronics.
The TPS60255RTER belongs to TI's WLED charge pump driver product line, designed specifically for space-constrained mobile handsets needing high-efficiency, multi-group LED current regulation with minimal external components.
FAQ
What input voltage range does the TPS60255RTER support, and how does it handle battery discharge?
The TPS60255RTER supports 2.7 V to 6.0 V input, covering the full operational range of single-cell Li-ion batteries. It automatically switches between 1× and 1.5× charge pump modes based on real-time current-sink voltage feedback - remaining in efficient 1× mode above ~3.75 V and transitioning to 1.5× mode below ~4.1 V to maintain regulation as the battery discharges. This behavior is confirmed in TI's SLVS825 Figure 9 and Operating Principles section.
How many LED current sinks does the TPS60255RTER provide, and what are their maximum ratings?
The TPS60255RTER provides seven individually regulated current sinks: GA1–GA4 and GB1–GB2 each deliver up to 25.2 mA (typ.), while GC delivers up to 80 mA (typ.). These values are specified in the Electrical Characteristics table (IG_AB_M and IGC_M) of the SLVS825 datasheet, with guaranteed min/max limits across temperature and input voltage.
What interface does the TPS60255RTER use for brightness control and ON/OFF commands?
The TPS60255RTER uses Texas Instruments' EasyScale™ single-wire interface on the IF pin. It supports full 32-step dimming for Groups A and B, four-step dimming for Group C, independent ON/OFF control per group, open-lamp status reporting, and mode selection (auto/forced 1×/forced 1.5×/shutdown) - all with precise timing parameters defined in the datasheet's Interface Timing table.
Does the TPS60255RTER include protection features, and what are they?
Yes, the TPS60255RTER includes built-in soft start (0.5 ms), over-current limit, thermal shutdown, over-voltage detection (6.6 V clamp), and UVLO with hysteresis (2.3 V threshold, 200 mV hysteresis). These protections are documented in the Features list and Absolute Maximum Ratings/Electrical Characteristics sections of SLVS825, ensuring robust operation under fault conditions.
What external components are required for basic operation of the TPS60255RTER?
The TPS60255RTER requires only four external components: one 1 µF input capacitor (C1), two 1 µF flying capacitors (C2, C3), and one 2.2–4.7 µF output capacitor (C4). TI recommends X5R/X7R ceramic capacitors for all positions. This minimal BOM is confirmed in Figure 1 (Typical Application) and Capacitor Selection section of SLVS825.
TPS60255RTER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Switched Capacitor (Charge Pump)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 7
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 6V
- Voltage - Output:
- -
- Current - Output / Channel:
- 25mA, 80mA
- Frequency:
- 750kHz
- Dimming:
- Single-Wire
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WQFN (3x3)
TPS60255RTER FAQ
1.How can I place an order for TPS60255RTER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60255RTER 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 TPS60255RTER reliable?
The price and inventory of TPS60255RTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60255RTER is usually 5 days.
3.What payment methods are accepted for TPS60255RTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60255RTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60255RTER?
TPS60255RTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60255RTER 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 TPS60255RTER?
For technical support, including TPS60255RTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60255RTER requirements.
6.How does Aetrix verify that TPS60255RTER is sourced from the original manufacturer or authorized distributors?
All TPS60255RTER 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 TPS60255RTER meets industry standards.
7.What is the process for return or replacement of TPS60255RTER?
All TPS60255RTER units undergo pre-shipment inspection (PSI). If there is an issue with TPS60255RTER, 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 TPS60255RTER part is unused and in its original packaging.
Return procedure for TPS60255RTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS60255RTER Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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