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Texas Instruments TPS60250RTET
- Part No.:
- TPS60250RTET
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TPS60250RTET.pdf
- Description:
- IC LED DRV RGLTR I2C 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:175
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Product details
Overview
TPS60250RTET from Texas Instruments is a high-efficiency, I²C-programmable charge pump LED driver IC for multi-display backlighting. It delivers regulated constant current to up to five main display LEDs (DM1–DM4 + DM5), two sub display LEDs (DS1–DS2), and supports auto-switching between ×1 and ×1.5 charge pump modes. Key confirmed parameters: 3.0–6.0 V input range, 750 kHz switching frequency, 230 mA continuous output current, 2% sub-LED current matching at light load, and 16-pin 3 mm × 3 mm QFN package. It targets compact handheld devices with dual-display architectures.
For engineers reviewing the TPS60250RTET datasheet, TPS60250RTET pinout, TPS60250RTET application, or TPS60250RTET equivalent, this page provides verified technical context, validated pin functions, real-world dimming and efficiency behavior, and precise alternative part comparisons - all grounded in TI's SLVS769C datasheet and official parametric data.
Technical Context
The TPS60250RTET integrates a dual-mode charge pump (×1 pass-through and ×1.5 switched-capacitor) with seven independent current sinks - four for main display (DM1–DM4), two for sub display (DS1–DS2), and one configurable auxiliary sink (DM5). Its adaptive mode selection logic monitors cathode voltage (VDXX) across each sink and transitions to ×1.5 mode when any VDXX falls below 100 mV, ensuring regulation across Li-ion battery discharge (3.0–4.2 V).
It implements full I²C control (400 kHz compliant) with dedicated registers for enable, dimming (64-step for main/sub, 4-step for DM5-aux), open-lamp detection, and DM5 functional assignment (main bank vs. 80 mA torch/flash). Built-in soft-start, overvoltage protection (6.5 V), and UVLO with hysteresis (210 mV) support robust system-level integration in space-constrained mobile designs.
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 operation including cold-start at 3.0 V and overvoltage tolerance during charging. |
| Charge Pump Modes | Auto-switching ×1 and ×1.5 - eliminates manual mode selection; extends high-efficiency operation across 3.0–4.2 V battery range without external control logic. |
| Max Output Current | 230 mA continuous - sufficient to drive 4 × 15 mA main LEDs + 2 × 100 µA sub LEDs + 80 mA DM5 auxiliary simultaneously under thermal limits. |
| I²C Interface | 400 kHz Fast Mode - enables real-time dimming updates and status reads without CPU overhead; slave address 0x77 (1110111 binary). |
| Current Matching | ±2% for sub-LEDs at 100 µA - ensures uniform brightness in low-power standby display mode where human eye sensitivity is highest. |
| Switching Frequency | 750 kHz - allows use of small 1 µF ceramic flying capacitors (C1/C2), minimizing board area and EMI compared to lower-frequency charge pumps. |
| Package | 16-pin 3 mm × 3 mm QFN (RTE) - 0.5 mm pitch, exposed thermal pad; supports high-density layout and efficient PCB heat dissipation. |
Pinout & Package
TPS60250RTET uses a 16-pin, 3 mm × 3 mm QFN package (RTE suffix) with exposed thermal pad. Pin numbering follows top-view orientation per TI SLVS769C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT | Output node | Anode supply for all white LEDs; connects to LED anodes via single trace - simplifies routing and reduces voltage drop mismatch. |
| VIN | Power input | Main 3–6 V supply input; requires local 4.7 µF ceramic decoupling to suppress high-frequency switching noise. |
| SCLK | I²C clock input | Master-generated clock line; must meet 600 ns high-time and 1300 ns low-time timing for 400 kHz operation. |
| SDAT | I²C bidirectional data | Open-drain I/O; requires pull-up to VIN or separate VIO rail; supports register read/write and ACK handshaking. |
| DM5 | Auxiliary current sink | Configurable 80 mA sink for keypad backlight, torch, or weak flash; enabled independently via I²C Enable Control Register (bit ENaux). |
| DS1, DS2 | Sub display current sinks | Independent 25 mA sinks for outer-display LEDs; dimming controlled by Sub Display Current Register (0x01h). |
| DM1–DM4 | Main display current sinks | Four 25 mA sinks for inner-display LEDs; share Main Display Current Register (0x02h); support 64-step dimming. |
| GND | Ground reference | System ground return; must be connected to exposed thermal pad for thermal performance and noise immunity. |
| C1−, C1+, C2−, C2+ | Flying capacitor terminals | Connect to two matched 1 µF X5R/X7R ceramic capacitors; polarity-sensitive - incorrect connection prevents charge pump operation. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive ×1 / ×1.5 mode switching | Automatically selects optimal conversion ratio based on real-time VDXX sensing - maintains >80% efficiency across entire 3.0–4.2 V battery range without firmware intervention. |
| Seven independent current sinks | Enables true multi-bank control: main (DM1–DM4), sub (DS1–DS2), and aux (DM5) operate with separate dimming, enable, and fault reporting - critical for clamshell/slide phone UI flexibility. |
| Open lamp detection | Seven internal comparators monitor each sink voltage; disables ×1.5 transition if any LED path opens - prevents efficiency collapse and false overvoltage faults in partial-LED configurations. |
| Configurable DM5 function | Software-selectable between 25 mA main-display extension (64-step dimming) or 80 mA auxiliary mode (4-step dimming) - eliminates need for separate torch/flash drivers in cost-sensitive designs. |
| Low-light current matching | ±2% matching at 100 µA sub-LED current - preserves perceived brightness uniformity during always-on display (AOD) or night-mode operation where absolute current is minimal. |
Applications
| Clamshell Mobile Phone | Slide-Type Handheld Device |
|---|---|
Use Scenario: Dual-display architecture with main LCD inside and smaller secondary display on outer cover. IC Role / Device Role / Timing Role: TPS60250RTET drives four 15 mA main LEDs and two 100 µA sub LEDs with independent I²C dimming and auto ×1/×1.5 mode switching. Use Value: Maintains consistent brightness across battery discharge while enabling distinct UI states (e.g., dimmed sub-display for notifications, full-brightness main for interaction). |
Use Scenario: Slide-up phone with main display and two separate keypad banks (inner and outer). IC Role / Device Role / Timing Role: TPS60250RTET assigns DM5 as 80 mA keypad backlight sink while driving DS1/DS2 for outer keypad and DM1–DM4 for main display. Use Value: Eliminates need for second LED driver IC; reduces BOM count and PCB area while supporting simultaneous main display + dual-keypad illumination. |
| PDA with Always-On Display | GPS Navigator with Torch Function |
Use Scenario: Portable navigation device requiring low-power sub-display showing time/battery during sleep mode. IC Role / Device Role / Timing Role: TPS60250RTET powers DS1/DS2 at 100 µA with ±2% matching and operates exclusively in ×1 mode for ultra-low quiescent current (68 µA). Use Value: Enables true always-on capability with no perceptible brightness variation between sub-LEDs, extending battery life beyond 72 hours in standby. |
Use Scenario: Outdoor GPS unit needing brief illumination for button visibility in darkness. IC Role / Device Role / Timing Role: TPS60250RTET configures DM5 as 80 mA torch output with 4-step dimming (100%/70%/40%/20%) via I²C write to Enable Control Register. Use Value: Delivers usable illumination without thermal throttling or external MOSFET; leverages existing charge pump infrastructure instead of adding discrete boost+switch circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar WLED charge pump driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60252RTET | Identical architecture and pinout; differs only in I²C slave address (0x76 vs. TPS60250RTET's 0x77) - enables dual-driver systems on same bus. | Used when multiple TPS6025x devices coexist on one I²C bus; no change to LED routing, power, or layout required. | Select TPS60252RTET only when bus addressing conflict exists; otherwise TPS60250RTET is default for single-driver systems. |
| LM3530TMX/NOPB | Uses inductive boost topology (not charge pump); fixed 1.2 MHz switching; 30 V OVP; supports 9-channel PWM/digital dimming but no auto ×1/×1.5 mode. | Better suited for higher-VF LEDs (>3.6 V) or systems requiring >300 mA total current; lacks native low-current sub-display optimization. | Choose LM3530TMX/NOPB for designs with >4.2 V LED strings or where inductor-based EMI profile is acceptable; avoid for strict Li-ion 3–4.2 V dual-display efficiency focus. |
Compared with TPS60252RTET, the TPS60250RTET offers identical electrical performance and layout compatibility but enables simpler I²C initialization in single-driver systems. Against LM3530TMX/NOPB, the TPS60250RTET delivers superior light-load efficiency and smaller solution size due to capacitor-only topology - critical for sub-2 mm height constraints in modern handhelds.
Availability
TPS60250RTET is available at Aetrix Electronics and suitable for cellular phones, PDA/GPS navigation units, and multidisplay handheld devices requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS60250RTET 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 portable power solutions.
The TPS60250RTET belongs to TI's WLED charge pump driver product line, designed specifically for space-constrained, battery-powered handheld devices requiring multi-bank backlight control, high efficiency across Li-ion voltage range, and software-configurable auxiliary lighting functions.
FAQ
What is the I²C slave address for TPS60250RTET?
The TPS60250RTET has a fixed I²C slave address of 0x77 (1110111 binary). This is factory-programmed and non-configurable. The alternate variant TPS60252RTET uses 0x76 (1110110) to allow coexistence on the same I²C bus. No external pull-up or address pins are required - communication begins immediately after power-up and I²C initialization.
How does TPS60250RTET handle open LED conditions?
The TPS60250RTET incorporates seven dedicated open-lamp comparators - one per current sink (DM1–DM4, DS1–DS2, DM5). When any LED path opens, the corresponding sink voltage collapses; the comparator disables automatic ×1.5 mode transition to prevent unregulated output and efficiency loss. Open-lamp detection is enabled/disabled via bit ENold (B6) in the Enable Control Register (0x00h).
Can DM5 on TPS60250RTET be used for camera flash?
Yes - DM5 on the TPS60250RTET can be configured as an 80 mA auxiliary output suitable for low-power torch or weak camera flash. When assigned to auxiliary mode (via DM5H/DM5L bits = 10 in Enable Control Register), it supports four discrete dimming steps (100%, 70%, 40%, 20%). It is not rated for high-current strobe flash but meets requirements for indicator-level illumination in compact imaging modules.
What are the recommended flying capacitors for TPS60250RTET?
TI specifies two matched 1.0 µF X5R or better ceramic capacitors for C1 and C2 in the TPS60250RTET. They must be identical in value, voltage rating (≥6.3 V), and dielectric to ensure balanced charge transfer and stable ×1.5 mode operation. Use 0603 or 0805 case sizes; avoid tantalum or electrolytic types due to ESR and reliability concerns at 750 kHz switching.
Does TPS60250RTET support independent dimming of main and sub displays?
Yes - the TPS60250RTET provides fully independent dimming control via separate I²C registers: Sub Display Current Register (0x01h) for DS1/DS2 and Main Display Current Register (0x02h) for DM1–DM4. Each supports 64-step dimming with 0.1 mA resolution below 1.5 mA and 0.5 mA above - enabling precise brightness matching between main and sub displays under varying ambient light conditions.
TPS60250RTET 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)
TPS60250RTET FAQ
1.How can I place an order for TPS60250RTET through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60250RTET 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 TPS60250RTET reliable?
The price and inventory of TPS60250RTET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60250RTET is usually 5 days.
3.What payment methods are accepted for TPS60250RTET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60250RTET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60250RTET?
TPS60250RTET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60250RTET 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 TPS60250RTET?
For technical support, including TPS60250RTET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60250RTET requirements.
6.How does Aetrix verify that TPS60250RTET is sourced from the original manufacturer or authorized distributors?
All TPS60250RTET 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 TPS60250RTET meets industry standards.
7.What is the process for return or replacement of TPS60250RTET?
All TPS60250RTET units undergo pre-shipment inspection (PSI). If there is an issue with TPS60250RTET, 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 TPS60250RTET part is unused and in its original packaging.
Return procedure for TPS60250RTET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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