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Texas Instruments TPS61305YFFT
- Part No.:
- TPS61305YFFT
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-UFBGA, DSBGA
- Datasheet:
-
TPS61305YFFT.pdf
- Description:
- IC LED DRIVER RGLTR DIM 20DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:250
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Product details
Overview
TPS61305YFFT from Texas Instruments is a 1.5-A/4.1-A multiple LED camera flash driver IC with I²C interface, designed for smartphone dual/triple white LED flash applications. It delivers up to 1850-mA flash current (HC_SEL = HIGH), operates from 2.5 V–5.5 V input, maintains 400-mV LED sense voltage, and integrates LED temperature monitoring via TS pin.
For engineers reviewing the TPS61305YFFT datasheet, TPS61305YFFT pinout, TPS61305YFFT application, or TPS61305YFFT equivalent, this device is selected for compact, high-efficiency camera flash systems requiring precise current regulation, zero-latency FLASH_SYNC triggering, thermal safety, and storage-capacitor-based peak power delivery.
Technical Context
The TPS61305YFFT implements a synchronous boost converter with three independent constant-current sinks (LED1/LED2/LED3) and an auxiliary INDLED current source. Its dual-mode operation-voltage-regulated boost (3.825 V–5.7 V) and regulated-current LED drive-enables flexible system partitioning between flashlight and DC light functions.
It features hardware NRESET for system-level shutdown, TS pin for NTC-based LED temperature sensing (44.5 kΩ warning threshold), and FLASH_SYNC for sub-16 µs LED current settling. The 2-MHz switching frequency supports 2.2-µH inductors and <25 mm² total solution size.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports single-cell Li-ion/Li-poly battery operation without external LDO pre-regulation. |
| Max Flash Current (LED2) | 1850 mA (HC_SEL = HIGH) - enables high-brightness xenon-replacement flash using supercapacitor energy burst. |
| LED Sense Voltage | 400 mV - low dropout improves efficiency and thermal margin at full-scale LED current. |
| I²C Speed | Up to 3.4 Mbit/s (High-Speed mode) - allows rapid register updates for dynamic flash intensity and timing control. |
| Standby Current | 2 µA typical - minimizes battery drain during idle camera standby states. |
| Thermal Shutdown | 140 °C activation with 20 °C hysteresis - protects against LED overheating and PCB thermal runaway. |
| TS Input Bias Current | 23.8 µA - provides stable NTC bias for accurate LED junction temperature tracking (±8 °C accuracy). |
Pinout & Package
TPS61305YFFT is housed in a 20-pin NanoFree™ DSBGA package (1.90 mm × 2.20 mm, 0.5-mm pitch), optimized for ultra-thin mobile camera modules. Thermal performance is enhanced by direct die attachment to PCB via bottom-side solder balls.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN | Power Input | Main input supply connection; requires local 10-µF ceramic bypass capacitor for stability. |
| VOUT | Boost Output | Regulated output node feeding storage capacitor and LED anodes; supports up to 5.7 V. |
| SW | Switch Node | Internal MOSFET drain connection; interfaces with 2.2-µH inductor and output rectifier path. |
| LED1/LED2/LED3 | Current Sink Returns | Individual cathode return paths with 400-mV precision current-sense reference; enable per-LED dimming. |
| TS | Temperature Sense | Analog input for 220-kΩ NTC thermistor; triggers LEDHOT/LEDWARN flags when thresholds crossed. |
| NRESET | Hardware Reset | Active-low asynchronous reset; forces shutdown and clears I²C interface state on falling edge ≥10 µs. |
| FLASH_SYNC | Strobe Trigger | Zero-latency hardware strobe input; switches LED current from DC light to flash level within 16 µs. |
| SDA/SCL | I²C Interface | Standard bidirectional data/clock lines supporting High-Speed mode (3.4 Mbit/s) for real-time configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LED Temperature Monitoring | TS pin with 23.8-µA bias enables closed-loop thermal derating-prevents LED degradation and ensures compliance with IEC 62471 photobiological safety limits. |
| Storage Capacitor Balancing (BAL) | BAL pin actively balances dual-cell supercapacitors with ±100-mV accuracy, extending flash cycle life and maintaining >95% efficiency across charge/discharge cycles. |
| Zero-Latency Flash Synchronization | FLASH_SYNC input achieves ≤16 µs LED current transition-critical for precise alignment with CMOS image sensor exposure timing and avoiding motion blur. |
| Automatic VF and ESR Calibration | On-chip calibration compensates for LED forward-voltage drift and capacitor ESR variation over temperature and aging-maintains ±7.5% current accuracy without factory trimming. |
| Power-Save Mode | Dynamically reduces switching frequency under light load to sustain >90% efficiency at 10-mA output-extends battery runtime in always-on camera preview modes. |
Applications
| Smartphone Dual-LED Flash System | Triple-LED Camera Module |
|---|---|
|
Use Scenario: Front/rear dual-camera smartphones requiring synchronized flash illumination with minimal PCB area and thermal footprint. IC Role / Device Role / Timing Role: Primary flash driver managing LED1 (main) and LED2 (auxiliary) currents, triggered via FLASH_SYNC aligned to sensor frame start. Use Value: Delivers 1850-mA peak current per channel with <16 µs settling-enabling high-CRI, low-motion-blur flash capture at 1/15 s exposure. |
Use Scenario: Premium triple-camera array (wide/ultra-wide/telephoto) needing independent flash intensity control per lens module. IC Role / Device Role / Timing Role: Centralized flash controller regulating LED1/LED2/LED3 with individual I²C-programmable current codes and shared TS-based thermal throttling. Use Value: Achieves ±10% current matching across channels and 0.05%/°C tempco-ensuring consistent color temperature and luminance across all lenses. |
| Privacy Indicator Lighting | Mobile Audio Amplifier Supply |
|
Use Scenario: User-facing camera systems requiring visual privacy indication (e.g., "camera active" LED) compliant with GDPR/CCPA requirements. IC Role / Device Role / Timing Role: INDLED constant-current output drives low-VF indicator LED; GPIO/PG repurposed as status signal to AP. Use Value: Provides 2.6–7.9 mA programmable current with ±20% accuracy-supports reliable, visible privacy signaling without additional driver circuitry. |
Use Scenario: Class-D audio amplifier in smartphones requiring clean, ripple-free 5-V supply during high-power playback. IC Role / Device Role / Timing Role: Voltage-regulation mode (ENVM = HIGH) configures TPS61305YFFT as 4.95-V boost converter with <15-mV ripple. Use Value: Delivers up to 750-mA output with 95% efficiency-replaces discrete buck-boost solutions while reducing BOM count by 4 components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED flash driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61305AYFFT | Includes identical LED current specs and TS functionality but adds ENVM pin for dedicated voltage-mode enable (TPS61305 uses NRESET + I²C for mode control). | Preferred where hardware-enforced voltage mode entry is required for system-level power sequencing. | Select TPS61305AYFFT if board layout allows separate ENVM routing and firmware cannot guarantee safe I²C-initiated mode transitions. |
| TPS61310YFFT | Higher 2.5-A max flash current (LED2), no TS pin, supports only HC_SEL-based mode selection-lacks LED temperature monitoring and privacy indicator output. | Suitable for cost-sensitive designs omitting thermal safety and indicator lighting requirements. | Choose TPS61310YFFT only when thermal derating is handled externally and INDLED/GPIO/PG functions are unused. |
Compared with TPS61305YFFT, TPS61305AYFFT offers deterministic voltage-mode activation via ENVM but shares identical thermal protection and flash timing; TPS61310YFFT trades safety features for higher peak current, requiring external thermal management and eliminating privacy-indicator capability.
Availability
TPS61305YFFT is available at Aetrix Electronics and suitable for smartphone camera modules, mobile imaging systems, and privacy-compliant indicator lighting requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS61305YFFT 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 mobile power innovation.
The TPS6130xx family was engineered specifically for space-constrained, high-efficiency camera flash systems in smartphones-integrating boost conversion, multi-channel LED current control, thermal safety, and I²C configurability into a single 20-pin DSBGA.
FAQ
What is the maximum flash current capability of the TPS61305YFFT in high-current mode?
The TPS61305YFFT delivers up to 1850 mA on the LED2 channel when HC_SEL is driven HIGH and operating in extended high-current (energy storage) mode. This enables xenon-replacement flash brightness using a supercapacitor, with current accuracy maintained at ±10% across temperature and process variation. The TPS61305YFFT achieves this while sustaining <25 mm² total PCB footprint and 95% peak efficiency.
How does the TPS61305YFFT implement LED temperature monitoring?
The TPS61305YFFT uses its TS pin to bias a 220-kΩ NTC thermistor connected between TS and GND, drawing a precise 23.8-µA current. When the thermistor resistance drops below 44.5 kΩ (indicating elevated LED temperature), the device asserts LEDWARN; at ≤14.5 kΩ, it triggers LEDHOT and initiates current derating. This function is exclusive to TPS61305YFFT and TPS61305AYFFT variants.
Can the TPS61305YFFT operate as a standard voltage regulator?
Yes-the TPS61305YFFT supports voltage-regulation mode via I²C command or hardware NRESET sequence, delivering a fixed 4.95 V output with ±2% accuracy and <15-mV ripple. In this mode, it supplies up to 750 mA with >90% efficiency at light loads, making it suitable for powering audio amplifiers or other 5-V peripherals without requiring a separate boost IC.
What is the purpose of the BAL pin on the TPS61305YFFT?
The BAL pin on the TPS61305YFFT provides active balancing current for dual-cell supercapacitors used in flash energy storage. It compensates for leakage current mismatch between cells with ±100-mV accuracy, ensuring balanced voltage distribution and extending capacitor lifetime. This eliminates the need for external passive balancing networks in high-reliability camera modules.
Does the TPS61305YFFT support zero-latency flash triggering?
Yes-the TPS61305YFFT features a dedicated FLASH_SYNC input that enables sub-16 µs transition from DC light to full flash current. This hardware-triggered strobe synchronization eliminates software-induced delays, ensuring precise alignment with CMOS image sensor exposure timing and preventing motion blur in fast-moving scenes.
TPS61305YFFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 3
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 5.7V
- Current - Output / Channel:
- 400mA, 800mA (Flash)
- Frequency:
- 1.92MHz
- Dimming:
- I2C
- Applications:
- Camera Flash
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DSBGA
TPS61305YFFT FAQ
1.How can I place an order for TPS61305YFFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61305YFFT 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 TPS61305YFFT reliable?
The price and inventory of TPS61305YFFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61305YFFT is usually 5 days.
3.What payment methods are accepted for TPS61305YFFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61305YFFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61305YFFT?
TPS61305YFFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61305YFFT 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 TPS61305YFFT?
For technical support, including TPS61305YFFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61305YFFT requirements.
6.How does Aetrix verify that TPS61305YFFT is sourced from the original manufacturer or authorized distributors?
All TPS61305YFFT 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 TPS61305YFFT meets industry standards.
7.What is the process for return or replacement of TPS61305YFFT?
All TPS61305YFFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61305YFFT, 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 TPS61305YFFT part is unused and in its original packaging.
Return procedure for TPS61305YFFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS61305YFFT Tags
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