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Texas Instruments TPS61325YFFT
- Part No.:
- TPS61325YFFT
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-UFBGA, DSBGA
- Datasheet:
-
TPS61325YFFT.pdf
- Description:
- IC LED DRV RGLTR PWM 20DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:495
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Product details
Overview
TPS61325YFFT from Texas Instruments is a 1.5-A to 4.1-A multiple LED camera flash driver IC with I²C interface, synchronous boost topology, and integrated constant-current sinks for up to three white LEDs. It supports dual operational modes (DC-light and flashlight), delivers up to 2050 mA peak flash current in energy storage mode (HC_SEL = HIGH), and maintains regulated output voltage (3.825 V–5.7 V) even when input exceeds nominal output. It is used in smartphone camera modules requiring zero-latency strobe control via STRB0/STRB1.
For engineers reviewing the TPS61325YFFT datasheet, TPS61325YFFT pinout, TPS61325YFFT application, or TPS61325YFFT equivalent, key selection considerations include its 20-pin DSBGA package, I²C-compatible interface up to 3.4 Mbps, integrated LED safety timer, privacy indicator output (INDLED), and dual-wire camera module synchronization capability.
Technical Context
The TPS61325YFFT implements a high-frequency (1.92 MHz) synchronous boost converter with three independent constant-current LED sinks and a dedicated voltage-regulated output stage. Its architecture enables simultaneous DC-light operation and high-peak flash delivery using an external storage capacitor, with automatic VF and ESR calibration to maintain accuracy across temperature and aging.
It features dual-mode control logic: STRB0/STRB1 inputs provide hardware-triggered zero-latency LED enablement, while Tx-MASK allows RF PA synchronization. The device includes thermal monitoring (TS pin with NTC support), active cell balancing (BAL pin) for supercapacitor stacks, and GPIO/PG configurable as power-good or general-purpose I/O.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current Range | Up to 2050 mA (LED2, HC_SEL = HIGH); 890 mA (LED2, HC_SEL = LOW); 1025 mA (LED1/LED3, HC_SEL = HIGH) |
| Input Voltage Range | 2.5 V to 5.5 V - supports single-cell Li-ion, Li-poly, or dual-cell NiMH battery inputs without external regulation |
| Output Voltage Range | 3.825 V to 5.7 V in voltage regulation mode - maintains stable rail for storage capacitor charging and LED biasing |
| I²C Interface Speed | Up to 3.4 Mbps (high-speed mode) - enables rapid configuration of LED current, timing, and safety registers |
| Switching Frequency | 1.92 MHz ±10% - permits use of compact 2.2 µH inductors and reduces EMI filtering requirements |
| LED Sense Voltage | 400 mV (HC_SEL = LOW/HIGH) - low dropout improves efficiency and headroom margin for short LED strings |
| Standby Current | 2 µA typical (HC_SEL = HIGH, balanced storage cap) - extends battery life during idle camera operation |
Pinout & Package
TPS61325YFFT is housed in a 20-pin NanoFree™ DSBGA (YFF) package measuring 2.20 mm × 1.96 mm with 0.4-mm pitch, optimized for ultra-thin mobile camera modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN | Power Input | Main analog supply input (2.5–5.5 V); connects directly to input bypass capacitor |
| VOUT | Boost Output | Regulated output node for storage capacitor charging and LED anode biasing |
| SW | Power Switch Node | Connection to inductor switch node; internal high-side MOSFET drain (rDS(on) = 90 mΩ) |
| LED1 / LED2 / LED3 | LED Cathode Sense | Current-sense feedback inputs regulating LED current via 400-mV internal reference |
| STRB0 / STRB1 | Strobe Control | Hardware-triggered enable inputs: STRB0 activates LEDs; STRB1 selects DC-light (HIGH) or flashlight (LOW) mode |
| SDA / SCL | I²C Interface | Bi-directional data and clock lines supporting standard/fast/high-speed modes up to 3.4 Mbps |
| GPIO/PG | Configurable I/O | Default open-drain power-good output signaling VOUT regulation status; reconfigurable as GPIO |
| HC_SEL | Mode Selection | High-current mode selector: LOW = direct LED drive (445/890/445 mA); HIGH = storage-capacitor energy mode (1025/2050/1025 mA) |
| TS | Temperature Sense | Analog input for NTC thermistor (220 kΩ) to monitor LED junction temperature and trigger thermal protection |
| BAL | Capacitor Balancing | Active balancing output for dual-cell supercapacitor stacks; compensates leakage mismatch between cells |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency strobe control | Hardware STRB0/STRB1 inputs achieve ≤400 µs LED current settling (HC_SEL = LOW) and ≤16 µs (HC_SEL = HIGH), eliminating software delay in camera capture |
| Storage capacitor optimization | Integrated precharge circuit (80–220 mA) and active cell balancing (±100 mV accuracy) enable reliable use of 10 mF supercapacitors for high-peak flash |
| Thermal-aware LED safety | TS pin supports programmable hot/warning thresholds (39–50 kΩ NTC resistance range) with dedicated LEDHOT/LEDWARN register flags |
| Privacy indicator support | INDLED pin provides constant-current source (programmable 0–25 mA) to drive low-VF status LEDs, independent of main flash channels |
| Efficiency preservation at light load | Automatic power-save mode transitions below ~10 mA load, sustaining >90% efficiency down to microamp-level quiescent currents |
Applications
| Smartphone Camera Flash | Xenon Replacement Module |
|---|---|
|
Use Scenario: Front/rear dual-camera smartphones requiring synchronized multi-LED flash with minimal PCB area and thermal footprint. IC Role / Device Role / Timing Role: Primary flash driver managing three independent LED channels, storage capacitor charge/discharge, and real-time thermal feedback via TS pin. Use Value: Enables 2050 mA peak flash current with <16 µs hardware-triggered response, replacing bulky xenon tubes while maintaining CRI >85 and color consistency. |
Use Scenario: Compact embedded vision systems (e.g., drones, action cams) needing high-intensity, low-latency illumination without high-voltage discharge circuits. IC Role / Device Role / Timing Role: High-efficiency boost + constant-current sink delivering regulated LED power with integrated safety timer and overvoltage protection (4.5–6.2 V OVP). Use Value: Eliminates HV transformers and trigger circuits; reduces BOM count by 7+ components versus xenon-based solutions while enabling programmable pulse width and intensity. |
| Mobile Video Conferencing Light | Privacy-Aware Status Indicator |
|
Use Scenario: Laptop/webcam accessories requiring continuous, flicker-free DC-light illumination during video calls with adaptive brightness control. IC Role / Device Role / Timing Role: Dual-mode driver operating in DC-light mode (STRB1 = HIGH) with I²C-adjustable current and integrated watchdog timer to prevent thermal runaway. Use Value: Delivers stable 890 mA per channel with <±7.5% current accuracy at 85°C, enabling uniform, glare-free lighting without visible PWM artifacts. |
Use Scenario: Devices requiring user-observable privacy indicators (e.g., microphone/camera mute LEDs) that remain functional during flash operation. IC Role / Device Role / Timing Role: Dedicated INDLED constant-current source (0–25 mA, 0.04%/°C tempco) driving low-VF indicator LEDs independently of main flash channels. Use Value: Guarantees visible status indication even when main flash is active or VOUT is transiently unstable, with no additional driver IC required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED flash driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61326YFFT | Different I²C address (0x32 vs. TPS61325's 0x33); identical pinout, electrical specs, and feature set | Same camera module integration; requires firmware I²C address update only | Select when board design accommodates dual-flash-driver configurations or requires separate I²C addressing in multi-camera systems |
| LM3644TME/NOPB | Lower max flash current (1500 mA LED2); no BAL pin or supercapacitor balancing; 1.5-MHz switching | Lacks active cell balancing and extended high-current mode; suited for simpler single-capacitor designs | Choose for cost-sensitive applications where 2050 mA peak current and dual-cell supercapacitor support are not required |
Compared with TPS61325YFFT, TPS61326YFFT offers identical functionality with only I²C address differentiation-ideal for multi-device systems-while LM3644TME/NOPB trades supercapacitor optimization and peak current headroom for reduced complexity and cost in entry-tier flash implementations.
Availability
TPS61325YFFT is available at Aetrix Electronics and suitable for smartphone camera modules, mobile video conferencing systems, and privacy-aware embedded vision devices requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for TPS61325YFFT 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 and interface solutions for mobile and imaging applications.
The TPS6132x product line was designed specifically for high-efficiency, space-constrained camera flash applications in smartphones and portable imaging devices, integrating boost conversion, LED current regulation, thermal safety, and camera synchronization into a single ultra-small package.
FAQ
What is the maximum LED flash current supported by the TPS61325YFFT in energy storage mode?
The TPS61325YFFT supports up to 2050 mA peak flash current on the LED2 channel when HC_SEL is driven HIGH and operating in energy storage mode. LED1 and LED3 each support up to 1025 mA under the same conditions. These values are validated across –40°C to 85°C ambient and assume proper thermal layout and 2.2-µH inductor selection. The TPS61325YFFT achieves this using its internal synchronous rectifier and low 400-mV LED sense voltage to minimize conduction losses.
How does the TPS61325YFFT handle thermal protection for LED arrays?
The TPS61325YFFT uses the TS pin to monitor LED temperature via an external 220-kΩ NTC thermistor. It detects warning (39–50 kΩ) and hot (12.5–16.5 kΩ) thresholds and asserts corresponding LEDWARN/LEDHOT bits in its I²C register map. The device does not autonomously shut down but provides real-time telemetry to the host processor, enabling dynamic current derating or flash disable. This behavior is fully documented in the TPS61325YFFT datasheet Section 7.5 and Application Report SLVA722.
Can the TPS61325YFFT operate without an external storage capacitor?
Yes, the TPS61325YFFT can operate in direct-drive mode without a storage capacitor when HC_SEL is LOW, delivering up to 890 mA to LED2 using only the battery input. In this mode, it functions as a conventional boost LED driver with voltage regulation (3.825–5.7 V) and DC-light capability. However, the storage capacitor (e.g., 10 mF supercap) is required to achieve 2050 mA flash current in energy storage mode, as specified in the TPS61325YFFT datasheet Section 3 and Figure 18.
What is the purpose of the BAL pin on the TPS61325YFFT?
The BAL pin on the TPS61325YFFT provides active cell balancing for dual-cell supercapacitor stacks used in high-energy flash applications. When HC_SEL = HIGH, the device sources/sinks up to ±15 mA through BAL to equalize voltage drift between series-connected supercapacitor cells, maintaining balance within ±100 mV. This prevents overvoltage on individual cells and extends stack lifetime-critical for reliable multi-year smartphone operation. The function is detailed in TPS61325YFFT datasheet Sections 6 and 7.5.
Does the TPS61325YFFT support I²C clock stretching or multi-master arbitration?
No, the TPS61325YFFT does not support I²C clock stretching or multi-master arbitration. Its I²C interface operates strictly as a slave device with fixed timing parameters compliant to standard/fast/high-speed modes (up to 3.4 Mbps). The SCL and SDA pins have defined input capacitance (4 pF and 9 pF respectively) and pull-down resistances (350 kΩ), but no internal clock hold capability. Host systems must manage bus arbitration externally, and all register reads/writes must conform to the timing windows in Section 7.6 of the TPS61325YFFT datasheet.
TPS61325YFFT 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:
- 2.5V ~ 5.7V
- Current - Output / Channel:
- 445mA, 890mA (Flash)
- Frequency:
- 2MHz
- Dimming:
- PWM
- Applications:
- Camera Flash
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DSBGA
TPS61325YFFT FAQ
1.How can I place an order for TPS61325YFFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61325YFFT 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 TPS61325YFFT reliable?
The price and inventory of TPS61325YFFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61325YFFT is usually 5 days.
3.What payment methods are accepted for TPS61325YFFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61325YFFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61325YFFT?
TPS61325YFFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61325YFFT 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 TPS61325YFFT?
For technical support, including TPS61325YFFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61325YFFT requirements.
6.How does Aetrix verify that TPS61325YFFT is sourced from the original manufacturer or authorized distributors?
All TPS61325YFFT 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 TPS61325YFFT meets industry standards.
7.What is the process for return or replacement of TPS61325YFFT?
All TPS61325YFFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61325YFFT, 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 TPS61325YFFT part is unused and in its original packaging.
Return procedure for TPS61325YFFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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