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Texas Instruments TPS60252RTER
- Part No.:
- TPS60252RTER
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TPS60252RTER.pdf
- Description:
- IC LED DRV RGLTR I2C 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,337
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Product details
Overview
TPS60252RTER from Texas Instruments is a high-efficiency, I²C-programmable charge pump LED driver IC designed 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 on DM5. Key confirmed specs: 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 auto-switching between ×1 and ×1.5 charge pump modes.
For engineers reviewing the TPS60252RTER datasheet, TPS60252RTER pinout, TPS60252RTER application, or TPS60252RTER equivalent, this page provides verified technical context, real-world design meaning of specifications, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The TPS60252RTER integrates dual-mode charge pump control (×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). Mode selection is fully automatic, triggered by cathode voltage (VDXX) falling below 100 mV, ensuring optimal efficiency across lithium-ion battery discharge (3.0–4.2 V).
Its I²C interface (400 kHz, slave address 0x76) enables full digital control: 64-step dimming per bank (0.1 mA/step ≤1.5 mA; 0.5 mA/step ≤25.5 mA), open-lamp detection via internal comparators, and programmable enable states for each LED bank. The device uses only four external components-two 1 µF flying capacitors (C1, C2), one 4.7 µF input capacitor, and one 4.7 µF output capacitor-enabling compact 3 mm × 3 mm QFN layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 6.0 V - Supports full Li-ion battery operating range without external regulation. |
| Charge Pump Modes | Auto-switching ×1 and ×1.5 - Maximizes efficiency by staying in low-loss ×1 mode until VDXX < 100 mV, then transitions to ×1.5 to sustain LED bias. |
| Max Output Current | 230 mA continuous - Sufficient to drive 4 × 15 mA main LEDs + 2 × 100 µA sub LEDs + 80 mA DM5 simultaneously. |
| I²C Interface | 400 kHz Fast Mode, slave address 0x76 - Enables real-time dimming, bank enable/disable, and open-lamp detection configuration without MCU GPIO overhead. |
| Current Matching | ±2% for sub-LEDs at 100 µA - Ensures uniform brightness in low-power sub-display operation (e.g., standby clock or notification icons). |
| Switching Frequency | 750 kHz - Allows use of small 1 µF ceramic flying capacitors and minimizes EMI in RF-sensitive handheld designs. |
| UVLO Thresholds | VUVLO1 = 2.4 V (hysteresis 210 mV); VUVLO2 = 1.3 V - Prevents erratic operation during deep battery discharge while preserving register state down to 1.3 V. |
Pinout & Package
TPS60252RTER is housed in a thermally enhanced 16-pin 3 mm × 3 mm QFN package (RTE) with exposed thermal pad. Pin numbering follows top-view layout; GND (Pin 12) and thermal pad are internally connected for optimal power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Charge pump output node | Supplies regulated voltage to all LED anodes; must be decoupled with 4.7 µF ceramic capacitor to minimize ripple. |
| VIN (Pin 2) | Main power input | Accepts 3.0–6.0 V supply; requires 4.7 µF low-ESR ceramic input capacitor for stable operation under pulsed LED loads. |
| SCLK (Pin 3) | I²C clock input | Drives synchronous communication; max 400 kHz; rise/fall times ≤300 ns required for reliable data transfer. |
| SDAT (Pin 4) | I²C bidirectional data line | Open-drain interface; requires pull-up resistor (typically 2.2–10 kΩ) to VIN or VIO rail. |
| DM5 (Pin 5) | Auxiliary LED current sink | Configurable for 80 mA keypad backlight/torch or 25 mA main display extension; controlled independently via I²C register. |
| DS1, DS2 (Pins 6–7) | Sub-display LED current sinks | Each sinks up to 25 mA; support 64-step dimming and open-lamp detection; optimized for uniform low-current brightness. |
| DM1–DM4 (Pins 8–11) | Main-display LED current sinks | Four independent 25 mA sinks with ±0.1% LED-to-LED current matching; enable individual bank control via ENmain bit. |
| GND (Pin 12) | Power and signal ground | Common reference for all sinks and charge pump; must be low-impedance connection to thermal pad for thermal performance. |
| C1−, C1+ (Pins 13, 16) | Flying capacitor terminals (C1) | Connect 1 µF X5R ceramic capacitor; polarity matters-C1+ to VOUT, C1− to GND in ×1.5 mode. |
| C2+, C2− (Pins 14–15) | Flying capacitor terminals (C2) | Connect second 1 µF X5R ceramic capacitor; configured in series with C1 during charge phase, parallel during discharge. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive ×1 / ×1.5 charge pump | Automatically selects most efficient mode based on real-time VDXX voltage-no firmware intervention needed. |
| Seven independent current sinks | Enables simultaneous control of main (4), sub (2), and auxiliary (1) LED banks with separate dimming, enable, and fault handling. |
| Open lamp detection | Uses seven internal comparators to detect missing LEDs and prevent false ×1.5 mode activation-preserves efficiency in partial-LED configurations. |
| Soft-start and current limiting | 0.5 ms soft-start prevents inrush current; built-in 650 mA peak current limit protects against shorted LED strings. |
| Low-light current precision | 100 µA dimming steps below 1.5 mA ensure consistent visibility of sub-display content (e.g., time/date) at ultra-low power. |
Applications
| Cellular Phone Backlight | PDA / GPS Display Control |
|---|---|
|
Use Scenario: Dual-display clamshell phone with main LCD (4 WLEDs), outer sub-display (2 WLEDs), and keypad backlight (DM5). IC Role / Device Role / Timing Role: Primary LED driver managing all three lighting zones via I²C; handles dynamic dimming, on/off sequencing, and battery-aware mode switching. Use Value: Eliminates need for separate sub-display and keypad drivers-reduces BOM count by ≥2 ICs and saves >15 mm² PCB area. |
Use Scenario: 4-inch PMP/GPS unit requiring uniform main display brightness and persistent sub-display status bar. IC Role / Device Role / Timing Role: Constant-current source for 4 main LEDs and 2 sub LEDs; maintains ±2% matching at 100 µA for readable standby text. Use Value: Extends battery life by 12% vs fixed-gain drivers due to adaptive ×1 mode dominance over 3.6–4.2 V battery range. |
| Multidisplay Handheld Devices | Low-Cost Camera Flash Support |
|
Use Scenario: Slide-type smartphone with inner main display, outer sub-display, and dual-keypad banks. IC Role / Device Role / Timing Role: Configurable LED controller assigning DM5 to inner keypad backlight and DS1/DS2 to outer display-managed via single I²C bus. Use Value: Enables hardware reuse across product variants (e.g., 2-LED vs 4-LED main displays) without layout changes or firmware rework. |
Use Scenario: Entry-level mobile camera using DM5 as weak flash (≤80 mA) for fill-light in low-light photos. IC Role / Device Role / Timing Role: Auxiliary current sink with 4-step dimming (100%/70%/40%/20%) and fast enable/disable via ENaux bit. Use Value: Provides flash functionality without dedicated flash IC-reduces cost by $0.18/unit and avoids additional thermal management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60250RTER | I²C slave address 0x77 (vs 0x76); identical electrical specs, pinout, and feature set. | No functional difference-used when multiple TPS6025x devices share same I²C bus. | Select TPS60250RTER only when bus addressing conflict requires alternate address; otherwise TPS60252RTER is default. |
| LM3530UMX/NOPB | 32-step dimming (vs 64), no DM5 auxiliary mode, 1.8–5.5 V input (vs 3.0–6.0 V), 30 V OVP (vs 6.5 V). | Lacks 80 mA auxiliary output and sub-LED matching spec; suited for simpler single-bank designs without keypad/torch needs. | Choose LM3530UMX/NOPB for cost-sensitive, single-display applications where 64-step dimming and DM5 flexibility are unnecessary. |
Compared with TPS60250RTER, the TPS60252RTER offers distinct I²C addressing for multi-device systems; compared with LM3530UMX/NOPB, it delivers superior dimming resolution, auxiliary output capability, and tighter sub-LED matching-making it essential for premium multi-display handhelds requiring flexible lighting architecture.
Availability
TPS60252RTER is available at Aetrix Electronics and suitable for cellular phones, PDA/GPS displays, multidisplay handheld devices, and low-cost camera flash applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS60252RTER 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 and interface solutions.
The TPS6025x product line was engineered specifically for space-constrained, battery-powered handheld devices needing intelligent multi-zone LED backlighting with minimal external components and robust I²C configurability.
FAQ
What is the I²C slave address for TPS60252RTER?
The TPS60252RTER uses a fixed I²C slave address of 0x76 (1110110 in binary). This differs from the TPS60250RTER (0x77), enabling coexistence on the same I²C bus. Addressing is hardwired and cannot be modified externally. The TPS60252RTER responds only to commands sent to 0x76, and its register map-including Enable Control (0x00), Sub Display Current (0x01), and Main Display Current (0x02)-is accessed exclusively via this address.
How does TPS60252RTER handle open LED conditions?
The TPS60252RTER integrates seven dedicated comparators-one per LED sink (DM1–DM4, DS1–DS2, DM5)-to monitor cathode voltage (VDXX) and detect open-circuit conditions. When an open lamp is sensed, the device disables automatic ×1.5 mode transition to prevent efficiency loss and maintains regulation on remaining active channels. Open lamp detection is enabled/disabled via bit B6 (ENold) in the Enable Control Register (0x00), and status can be inferred from abnormal VDXX readings during diagnostics.
Can DM5 on TPS60252RTER be used for both main display and auxiliary functions?
Yes-DM5 on the TPS60252RTER is fully configurable via bits B1–B0 (DM5H/DM5L) in the Enable Control Register (0x00). Setting DM5H/DM5L = 01 assigns DM5 to the main display bank (25 mA max, 64-step dimming); setting = 10 configures it as an auxiliary output (80 mA max, 4-step dimming for torch/keypad backlight). This dual-role capability eliminates the need for separate drivers and allows hardware reuse across product variants with differing lighting requirements.
What external capacitors are required for stable operation of TPS60252RTER?
The TPS60252RTER requires exactly four external ceramic capacitors: two 1 µF X5R/X7R flying capacitors (C1, C2) connected to pins C1± and C2±; one 4.7 µF low-ESR input capacitor (CI) from VIN to GND; and one 4.7 µF output capacitor (CO) from VOUT to GND. TI specifies these values for optimal 750 kHz switching, efficiency, and ripple suppression. Deviating-especially using <1 µF flying caps or non-X5R dielectrics-causes unstable charge pump operation and reduced efficiency.
What is the minimum operating current for sub-display LEDs with TPS60252RTER?
The TPS60252RTER supports sub-display LED currents as low as 100 µA per channel (DS1/DS2), with 100 µA dimming steps in the 0–1.5 mA range. At this level, the device guarantees ±2% current matching between DS1 and DS2-critical for uniform visibility of low-power status indicators (e.g., time, signal bars) in standby mode. This capability is explicitly characterized in the Electrical Characteristics table under "Km_sub" and validated across –40°C to +85°C ambient temperature.
TPS60252RTER 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)
TPS60252RTER FAQ
1.How can I place an order for TPS60252RTER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60252RTER 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 TPS60252RTER reliable?
The price and inventory of TPS60252RTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60252RTER is usually 5 days.
3.What payment methods are accepted for TPS60252RTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60252RTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60252RTER?
TPS60252RTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60252RTER 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 TPS60252RTER?
For technical support, including TPS60252RTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60252RTER requirements.
6.How does Aetrix verify that TPS60252RTER is sourced from the original manufacturer or authorized distributors?
All TPS60252RTER 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 TPS60252RTER meets industry standards.
7.What is the process for return or replacement of TPS60252RTER?
All TPS60252RTER units undergo pre-shipment inspection (PSI). If there is an issue with TPS60252RTER, 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 TPS60252RTER part is unused and in its original packaging.
Return procedure for TPS60252RTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS60252RTER Tags
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