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Texas Instruments TPS60250RTER
- Part No.:
- TPS60250RTER
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TPS60250RTER.pdf
- Description:
- IC LED DRV RGLTR I2C 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:616
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Product details
Overview
TPS60250RTER from Texas Instruments is a high-efficiency, I²C-programmable charge pump LED driver IC for multi-display handheld devices. It delivers regulated constant current to up to five main display LEDs (DM1–DM4 + DM5), two sub display LEDs (DS1–DS2), and supports auxiliary 80 mA output for keypad backlight or weak flash. Key confirmed specs: 3.0–6.0 V input range, 750 kHz switching frequency, 230 mA continuous output, 2% sub-LED current matching at light load, and auto-switching between ×1 and ×1.5 charge pump modes.
For engineers reviewing the TPS60250RTER datasheet, TPS60250RTER pinout, TPS60250RTER application, or TPS60250RTER equivalent, this page provides verified technical context on adaptive mode selection, I²C dimming register mapping, open-lamp detection behavior, and thermal derating in the 3 mm × 3 mm QFN package - all critical for backlight power architecture validation in cellular phones and PDA designs.
Technical Context
The TPS60250RTER implements dual-mode charge pump regulation with automatic transition between ×1 (direct pass) and ×1.5 (capacitive voltage boost) based on real-time comparison of input voltage against LED forward voltage plus dropout headroom. Mode switching uses a 100 mV threshold at each current sink (DM/DS pins) and incorporates 550 mV hysteresis to prevent oscillation during battery discharge.
It integrates seven independent current sinks: four main (DM1–DM4), two sub (DS1–DS2), and one configurable auxiliary (DM5), each programmable via I²C with 64-step dimming (25 mA max) or 4-step dimming (80 mA max). Open-lamp detection uses internal comparators per channel and is software-controllable through the Enable Control Register (0x00h).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 6.0 V - supports full single-cell Li-ion battery discharge curve without external LDO. |
| Charge Pump Frequency | 750 kHz - enables use of compact 1 µF ceramic flying capacitors (C1/C2) and minimizes EMI. |
| Max Output Current | 230 mA continuous - sufficient for 4×15 mA main LEDs + 2×100 µA sub LEDs + 80 mA DM5 auxiliary load. |
| Current Matching (Sub) | ±2% at 100 µA - ensures uniform brightness across DS1/DS2 under low-power display modes. |
| UVLO Thresholds | 2.4 V (UVLO1), 1.3 V (UVLO2) - provides staged shutdown: UVLO1 disables charge pump only; UVLO2 resets registers. |
| I²C Interface Speed | 400 kHz - compatible with standard/fast-mode I²C microcontrollers for real-time dimming updates. |
| Thermal Resistance (RθJA) | 48.7 °C/W - requires ≤1.13 W power dissipation at 85°C ambient for reliable operation in sealed handheld enclosures. |
Pinout & Package
TPS60250RTER is housed in a 16-pin, 3 mm × 3 mm, 0.5 mm pitch QFN package (RTE suffix) with exposed thermal pad. Pin numbering follows top-view orientation; GND (Pin 12) and thermal pad are internally connected for optimal heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Anode supply node | Connects to anodes of all white LEDs (main, sub, aux); must be decoupled with 4.7 µF ceramic capacitor. |
| VIN (Pin 2) | Main power input | Accepts 3–6 V battery input; requires 1–4.7 µF low-ESR ceramic input capacitor for ripple suppression. |
| SCLK (Pin 3) | I²C clock input | Accepts up to 400 kHz clock; timing compliant with fast-mode I²C (tH ≥ 600 ns, tL ≥ 1300 ns). |
| SDAT (Pin 4) | I²C bidirectional data | Open-drain interface; requires pull-up to VIO (same as VIN); supports ACK/NACK handshaking. |
| DM5 (Pin 5) | Auxiliary current sink | Configurable via I²C: 80 mA max for keypad backlight/torch, or 25 mA for 5th main LED. |
| DS1/DS2 (Pins 6–7) | Sub display current sinks | Each regulates 100 µA–25 mA; matched within ±2% at light load for consistent sub-display intensity. |
| DM1–DM4 (Pins 8–11) | Main display current sinks | Four independent 25 mA sinks; LED-to-LED matching ±0.1% ensures uniform main display luminance. |
| GND (Pin 12) | Power and signal reference | Connected to exposed thermal pad; must be solidly tied to PCB ground plane for thermal and noise control. |
| C1–/C1+ (Pins 13/16) | Flying capacitor terminals | Form first charge pump stage; require matched 1 µF X5R/X7R ceramics (C1). |
| C2–/C2+ (Pins 14/15) | Flying capacitor terminals | Form second charge pump stage; require matched 1 µF X5R/X7R ceramics (C2). |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive ×1 / ×1.5 mode switching | Automatically selects most efficient conversion ratio based on real-time VIN, VF, and VDXX; eliminates manual mode selection logic. |
| Per-channel I²C dimming control | 64-step resolution (0.1 mA/0.5 mA steps) for DM1–DM4 and DS1–DS2; 4-step scaling for DM5 in auxiliary mode. |
| Open-lamp detection | Seven independent comparators monitor each DM/DS pin; prevents false ×1.5 mode activation when LEDs are unpopulated. |
| Built-in soft-start | 500 µs ramp time from enable to 90% output - suppresses inrush current into LED strings and input capacitors. |
| Low-dropout current regulation | 80–120 mV dropout at 15 mA - maximizes time spent in high-efficiency ×1 mode across battery discharge cycle. |
Applications
| Cellular Phone Backlight | PDA Main/Sub Display |
|---|---|
Use Scenario: Dual-display clamshell handset with 4-LED main LCD and 2-LED external sub-display, powered by single-cell Li-ion battery. IC Role / Device Role / Timing Role: Primary LED driver IC managing independent brightness control, mode switching, and open-circuit fault handling for all seven LED channels. Use Value: Enables >90% efficiency across 4.2 V → 3.0 V battery range while maintaining ±2% sub-display uniformity at standby current levels. |
Use Scenario: Handheld PDA with 3.5-inch main TFT and 1.2-inch secondary status display, requiring programmable dimming profiles and low-light visibility. IC Role / Device Role / Timing Role: Constant-current LED driver with I²C-configurable dimming steps and adaptive charge pump for extended runtime. Use Value: Delivers 100 µA–25 mA per channel with 0.1 mA granularity below 1.5 mA, enabling precise low-brightness calibration for night-use modes. |
| Keypad Torch Light | Weak Camera Flash |
Use Scenario: Bar-style mobile phone using DM5 pin to drive 3–5 white LEDs for temporary illumination during keypad navigation. IC Role / Device Role / Timing Role: Auxiliary current sink configured via I²C for 80 mA burst output with 4-step dimming (100%/70%/40%/20%). Use Value: Eliminates need for separate torch driver IC; leverages existing TPS60250RTER footprint and firmware infrastructure. |
Use Scenario: Low-cost camera module requiring brief, non-strobe flash illumination (<100 ms) with minimal PCB area. IC Role / Device Role / Timing Role: Configured DM5 output delivering 80 mA peak current with built-in current limiting and thermal foldback. Use Value: Provides safe, repeatable flash intensity without external current-sense resistors or discrete MOSFETs - reducing BoM count by 3 components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60252RTER | Identical architecture and pinout; differs only in I²C slave address (1110110 vs 1110111) - allows dual-device addressing on same bus. | Required when multiple TPS6025x devices share one I²C bus; no change to schematic or layout. | Select TPS60252RTER only when system-level I²C address conflict exists; otherwise TPS60250RTER remains primary choice. |
| LM3530UMX/NOPB | Uses inductive buck-boost topology instead of charge pump; higher peak efficiency (>92%) but requires inductor and larger solution size. | Better suited for systems where board height is less constrained and higher current (>300 mA) is needed for larger displays. | Choose LM3530UMX/NOPB only if design requires >25 mA per channel or inductor-based efficiency optimization; not drop-in compatible. |
Compared with TPS60252RTER, the TPS60250RTER offers identical performance with a unique I²C address for single-device systems, while the LM3530UMX/NOPB trades capacitor-only simplicity for inductor-dependent efficiency gains - making TPS60250RTER optimal for space-constrained, multi-display handhelds needing minimal external components.
Availability
TPS60250RTER is available at Aetrix Electronics and suitable for cellular phone backlighting, PDA dual-display systems, keypad torch lighting, and weak camera flash applications requiring stable component supply across extended production lifecycles.
Supply support for TPS60250RTER 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 over 50 years of innovation in energy-efficient power conversion solutions.
The TPS60250RTER belongs to TI's WLED charge pump driver product line, designed specifically for space-constrained, battery-powered handheld devices requiring independent multi-bank LED control and adaptive efficiency optimization.
FAQ
What is the I²C slave address of the TPS60250RTER?
The TPS60250RTER has a fixed I²C slave address of 1110111 (0x77 in 7-bit format). This address is factory-programmed and cannot be altered. The companion part TPS60252RTER uses 1110110 (0x76) to allow coexistence on the same I²C bus. Address verification must be performed during system bring-up using an I²C scanner tool before initializing the TPS60250RTER configuration registers.
How does the TPS60250RTER handle open LED faults?
The TPS60250RTER performs open-lamp detection on all seven current sink pins (DM1–DM4, DS1–DS2, DM5) using dedicated internal comparators. When an open condition is detected, the device prevents spurious transitions to ×1.5 mode and maintains stable ×1 operation for remaining functional channels. Detection is enabled/disabled via bit B6 (ENold) in the Enable Control Register (0x00h), and status is not latched - it responds dynamically to physical connection changes.
Can DM5 on the TPS60250RTER drive more than 25 mA?
Yes - DM5 can deliver up to 80 mA when configured as an auxiliary output (via bits B1/B0 = 10 in the Enable Control Register), supporting keypad backlight or weak flash applications. In main-display mode (bits B1/B0 = 01), DM5 is limited to 25 mA and shares the same 64-step dimming resolution as DM1–DM4. The 80 mA mode uses only 4 dimming steps (100%, 70%, 40%, 20%) and is mutually exclusive with main-display assignment.
What external capacitors are required for the TPS60250RTER?
The TPS60250RTER requires four external ceramic capacitors: one 1–4.7 µF input capacitor (CI) on VIN, one 4.7 µF output capacitor (CO) on VOUT, and two matched 1 µF flying capacitors (C1 and C2) connected to pins C1± and C2±. All capacitors must be X5R or better dielectric; use 0603 or 0805 case sizes with low ESR. No electrolytic or tantalum capacitors are recommended or supported.
Does the TPS60250RTER support automatic mode switching between ×1 and ×1.5?
Yes - the TPS60250RTER automatically switches between ×1 and ×1.5 charge pump modes without host intervention. Transition occurs when any current sink voltage (VDXX) falls below 100 mV (×1→×1.5) or rises above 650 mV (×1.5→×1), providing 550 mV hysteresis. This behavior is fully analog and deterministic, relying on internal comparators and requires no firmware polling or register writes to enable.
TPS60250RTER 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):
- 3V
- Voltage - Supply (Max):
- 6V
- Voltage - Output:
- 6.5V
- Current - Output / Channel:
- 230mA
- Frequency:
- 750kHz
- Dimming:
- I2C
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WQFN (3x3)
TPS60250RTER FAQ
1.How can I place an order for TPS60250RTER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60250RTER 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 TPS60250RTER reliable?
The price and inventory of TPS60250RTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60250RTER is usually 5 days.
3.What payment methods are accepted for TPS60250RTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60250RTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60250RTER?
TPS60250RTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60250RTER 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 TPS60250RTER?
For technical support, including TPS60250RTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60250RTER requirements.
6.How does Aetrix verify that TPS60250RTER is sourced from the original manufacturer or authorized distributors?
All TPS60250RTER 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 TPS60250RTER meets industry standards.
7.What is the process for return or replacement of TPS60250RTER?
All TPS60250RTER units undergo pre-shipment inspection (PSI). If there is an issue with TPS60250RTER, 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 TPS60250RTER part is unused and in its original packaging.
Return procedure for TPS60250RTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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