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Texas Instruments TPS61305AYFFR
- Part No.:
- TPS61305AYFFR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- -
- Datasheet:
-
TPS61305AYFFR.pdf
- Description:
- TPS61305 - MULTIPLE LED CAMERA F
- Quantity:
- Payment:
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Inventory:48,000
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Product details
Overview
TPS61305AYFFR from Texas Instruments is a 2-MHz synchronous boost LED flash driver with I²C interface, designed for triple-white-LED camera flash in smartphones. It delivers up to 1025mA/2050mA/1025mA (LED1/LED2/LED3) in extended high-current mode, supports storage-capacitor-based energy delivery, and integrates LED temperature monitoring via TS pin. Used in mobile camera modules requiring precise flash timing and thermal safety.
For engineers reviewing the TPS61305AYFFR datasheet, TPS61305AYFFR pinout, TPS61305AYFFR application, or TPS61305AYFFR equivalent, key selection criteria include its 20-pin NanoFree™ CSP package, I²C-compatible interface up to 3.4 Mbps, integrated BAL output for dual-cell supercapacitor balancing, LED temperature sensing capability, and hardware reset (NRESET) support.
Technical Context
The TPS61305AYFFR implements a synchronous boost converter topology with constant-current sinks for three parallel white LEDs, operating in four distinct modes: DC light, flashlight, voltage regulation, and standby. Its 2-MHz switching frequency enables use of compact 2.2μH inductors and minimizes output ripple during high-current flash pulses.
It features zero-latency FLASH_SYNC triggering, Tx-MASK–enabled RF PA current load reduction, and automatic VF/ESR calibration for consistent LED brightness across battery voltage and temperature. The device maintains regulated output voltage (3.825–5.7 V) even when input exceeds nominal output, and enters power-save mode below 10 mA load to sustain >95% efficiency.
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 across full discharge curve. |
| Max Flash Current (LED2) | 2050 mA - Enables high-intensity xenon-replacement flash for smartphone rear cameras. |
| Switching Frequency | 2 MHz - Allows use of low-profile 2.2 μH inductors and reduces EMI filtering requirements. |
| I²C Interface Speed | Up to 3.4 Mbps - Enables rapid configuration of flash current, timing, and thermal thresholds. |
| LED Temp Sensing | TS pin with 23.8 μA bias - Supports NTC-based thermal derating to prevent LED overheating or burn-in. |
| Standby Current | 2 μA (typ.) - Minimizes battery drain during idle periods in always-on camera subsystems. |
| Output Voltage Range | 3.825 V to 5.7 V - Matches typical white LED forward voltage stacks and supercapacitor charging needs. |
Pinout & Package
TPS61305AYFFR is housed in a 20-pin NanoFree™ (CSP) package (2.15 mm × 2.15 mm, 0.4 mm pitch), optimized for ultra-thin mobile camera modules. The die-scale package eliminates wirebonds and reduces parasitic inductance for high-frequency switching stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN (E4) | Power Input | Main supply input for boost regulator; connects directly to input bypass capacitor near battery rail. |
| VOUT (A2) | Boost Output | Regulated output node feeding LED anodes and supercapacitor; supports voltage-mode regulation at 4.95 V. |
| LED1/LED2/LED3 (E2/E1/E3) | Current Sink Returns | Cathode return paths with 400 mV sense voltage; enable independent current control per LED string. |
| FLASH_SYNC (B4) | Strobe Trigger | Zero-latency input that switches instantly between DC light and flash current levels on rising edge. |
| HC_SEL (B3) | Mode Select | Configures extended high-current mode (2050 mA LED2) or standard drive (1025 mA LED2). |
| TS (C4) | Temp Sense | NTC bias pin for LED junction temperature monitoring; enables dynamic flash current derating. |
| NRESET (D3) | Hardware Reset | Active-low master reset that forces shutdown and clears I²C interface state. |
| BAL (A3) | Capacitor Balancer | Active output that equalizes leakage current mismatch between dual-cell supercapacitors. |
| SCL/SDA (B2/B1) | I²C Interface | Standard bidirectional I²C bus pins supporting fast-mode and high-speed mode (up to 3.4 Mbps). |
| SW (C1/C2) | Power Switch Node | Drain connection of internal MOSFET; ties to inductor switch node and requires low-inductance layout. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Super-Cap Balancing | BAL pin actively compensates leakage mismatch between dual-cell supercapacitors, extending flash cycle life and charge retention. |
| Hardware Flash Synchronization | FLASH_SYNC input achieves <16 μs LED current settling time from 0 to 2050 mA, enabling precise alignment with image sensor exposure timing. |
| RF-Aware Current Masking | TX-MASK input reduces LED current within microseconds to avoid interference with cellular/Wi-Fi transmit bursts. |
| Thermal Safety Architecture | TS pin + internal LEDWARN/LEDHOT flags allow firmware to throttle flash intensity before reaching critical junction temperatures. |
| Ultra-Small System Footprint | Total solution size <25 mm² using 2.2 μH inductor and 10 mF output capacitor - meets strict Z-height and board area constraints in modern smartphones. |
Applications
| Smartphone Rear Camera Flash | Front-Facing Video Call Illumination |
|---|---|
Use Scenario: High-intensity flash for low-light still capture in premium Android/iOS devices with triple-camera arrays. IC Role / Device Role / Timing Role: Primary flash driver delivering synchronized 2050 mA pulses to LED2 via FLASH_SYNC trigger, with thermal derating via TS feedback. Use Value: Replaces xenon tubes with higher reliability, lower Z-height, and programmable intensity-enabling thinner device profiles without sacrificing illumination range. | Use Scenario: Continuous DC light mode for front-facing video calls under dim ambient conditions. IC Role / Device Role / Timing Role: Regulated constant-current source driving LED1/LED3 at 1025 mA each in DC light mode, controlled via ENDCL or I²C. Use Value: Provides flicker-free, color-stable illumination with <2 μA standby draw-extending battery life during prolonged video sessions. |
| Privacy Indicator LED Control | Mobile Audio Amplifier Power Supply |
Use Scenario: User-visible privacy indicator activated when camera/mic is active in compliance with GDPR or platform security policies. IC Role / Device Role / Timing Role: INDLED pin drives low-VF indicator LED with programmable current; GPIO/PG repurposed as status flag output. Use Value: Eliminates need for discrete indicator circuitry-reducing BOM count and ensuring deterministic activation timing tied to camera engine state. | Use Scenario: Boosted power rail for Class-D audio amplifiers requiring >5 V supply in space-constrained earbud or speaker designs. IC Role / Device Role / Timing Role: Voltage-regulation mode (ENVM = HIGH) delivers stable 4.95 V output with <15 mV ripple at 10 mA load. Use Value: Enables higher amplifier output power and SNR versus direct battery operation-without adding external LDO or charge pump stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED flash driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61305YFFR | Lacks ENDCL pin; includes NRESET instead of ENDCL; identical LED current specs and TS functionality. | Requires software-controlled DC light entry vs. hardware-triggered DC light; better suited for systems with centralized power management. | Select TPS61305YFFR if hardware DC light enable is unnecessary and master reset coordination is preferred. |
| TPS61301YFFR | No TS pin; includes NRESET and ENVM; max flash current 1850 mA (LED2); no LED temperature monitoring. | Targeted at cost-sensitive mid-tier phones where thermal derating is managed system-wide rather than per-flash event. | Choose TPS61301YFFR when thermal safety is handled externally and 2050 mA peak current is not required. |
Compared with TPS61305YFFR and TPS61301YFFR, the TPS61305AYFFR uniquely combines hardware DC light enable (ENDCL), LED temperature sensing (TS), and 2050 mA flash capability-making it optimal for flagship smartphone camera subsystems demanding both performance and thermal robustness.
Availability
TPS61305AYFFR is available at Aetrix Electronics and suitable for smartphone camera modules, mobile video conferencing systems, and privacy-compliant embedded imaging applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS61305AYFFR 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 connectivity technologies, with decades of expertise in power management ICs for mobile and portable electronics.
The TPS6130x family was engineered specifically for high-efficiency, multi-LED camera flash in space- and power-constrained mobile devices-integrating boost conversion, current regulation, thermal monitoring, and I²C control into a single CSP package.
FAQ
What is the maximum LED flash current supported by the TPS61305AYFFR in extended high-current mode?
The TPS61305AYFFR supports up to 1025 mA for LED1 and LED3, and 2050 mA for LED2 when HC_SEL is asserted high. This extended mode leverages energy stored in a supercapacitor to deliver xenon-equivalent flash intensity while minimizing battery peak current draw. The TPS61305AYFFR achieves this with calibrated valley-current limiting and active cell balancing via the BAL pin.
How does the TPS61305AYFFR implement LED temperature monitoring?
The TPS61305AYFFR uses its TS pin to bias an external NTC thermistor (typically 220 kΩ) connected to ground, sourcing a precise 23.8 μA current. Voltage at TS is digitized internally to detect warning (LEDWARN) and hot (LEDHOT) thresholds corresponding to ~42 °C and ~65 °C LED junction temperatures. The TPS61305AYFFR reports these flags over I²C, enabling firmware to reduce flash current before thermal damage occurs.
Does the TPS61305AYFFR support both voltage regulation and constant-current LED driving modes?
Yes, the TPS61305AYFFR operates in dual-function mode: it regulates output voltage (3.825–5.7 V) when ENVM is high, and regulates LED current via LED1/LED2/LED3 sense inputs when in flash or DC light mode. In voltage mode, it maintains regulation even if AVIN exceeds VOUT-a key feature for systems where battery voltage may transiently exceed the flash rail. This flexibility allows the TPS61305AYFFR to serve as both flash driver and auxiliary power supply.
What is the role of the BAL pin on the TPS61305AYFFR?
The BAL pin on the TPS61305AYFFR provides active balancing current (±10 to ±15 mA) between two series-connected supercapacitor cells, compensating for leakage current mismatches that cause voltage imbalance. This extends usable flash energy and prevents overvoltage stress on individual cells. The TPS61305AYFFR monitors the VOUT–BAL differential (±100 mV accuracy) and adjusts BAL output dynamically-enabling reliable multi-cycle flash operation without external balancer circuitry.
Can the TPS61305AYFFR be used without an I²C host controller?
Yes-the TPS61305AYFFR supports fully hardware-configured operation: ENDCL enables DC light mode, NRESET provides hard reset, FLASH_SYNC triggers flash pulses, and HC_SEL selects current mode. I²C is optional for advanced features like dynamic current scaling, thermal flag polling, or custom timing. Default register values allow basic flash functionality without firmware initialization, making the TPS61305AYFFR suitable for legacy or resource-constrained platforms.
TPS61305AYFFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Topology:
- -
- Internal Switch(s):
- -
- Number of Outputs:
- -
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- -
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
TPS61305AYFFR FAQ
1.How can I place an order for TPS61305AYFFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61305AYFFR 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 TPS61305AYFFR reliable?
The price and inventory of TPS61305AYFFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61305AYFFR is usually 5 days.
3.What payment methods are accepted for TPS61305AYFFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61305AYFFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61305AYFFR?
TPS61305AYFFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61305AYFFR 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 TPS61305AYFFR?
For technical support, including TPS61305AYFFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61305AYFFR requirements.
6.How does Aetrix verify that TPS61305AYFFR is sourced from the original manufacturer or authorized distributors?
All TPS61305AYFFR 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 TPS61305AYFFR meets industry standards.
7.What is the process for return or replacement of TPS61305AYFFR?
All TPS61305AYFFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61305AYFFR, 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 TPS61305AYFFR part is unused and in its original packaging.
Return procedure for TPS61305AYFFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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