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Texas Instruments TPS61325YFFR
- Part No.:
- TPS61325YFFR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-UFBGA, DSBGA
- Datasheet:
-
TPS61325YFFR.pdf
- Description:
- IC LED DRV RGLTR PWM 20DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,062
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Product details
Overview
TPS61325YFFR from Texas Instruments is a 20-pin DSBGA synchronous boost LED flash driver IC for smartphone camera modules, delivering up to 2050-mA peak flash current per channel (LED2) in energy storage mode, 400-mV LED sense voltage accuracy, and I²C interface up to 3.4 Mbps - enabling triple-white-LED flashlight and DC-light operation with zero-latency strobe control via STRB0/STRB1 pins.
For engineers reviewing the TPS61325YFFR datasheet, TPS61325YFFR pinout, TPS61325YFFR application, or TPS61325YFFR equivalent, key selection criteria include its dual-mode operation (voltage-regulated boost + constant-current LED sink), integrated thermal monitoring (TS pin), privacy indicator output (INDLED), and support for supercapacitor-based high-current flash delivery without battery stress.
Technical Context
The TPS61325YFFR implements a 2-MHz synchronous boost converter with three independent, digitally programmable constant-current sinks (LED1/LED2/LED3) and a dedicated low-VF LED driver (INDLED). Its architecture supports both regulated-voltage mode (3.825 V–5.7 V) and regulated-current mode, with automatic VF/ESR calibration and power-save mode enabling >95% efficiency at light loads.
Control logic integrates dual-wire camera synchronization (STRB0/STRB1), Tx-MASK RF PA coordination, HC_SEL-configurable high-current mode, and GPIO/PG power-good signaling. The device uses internal MOSFETs with 90-mΩ high-side and 135-mΩ rectifier on-resistance, and features active cell balancing (BAL pin) for dual-cell supercapacitor systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports single-cell Li-ion, Li-polymer, or USB-powered systems without external LDO. |
| Max Flash Current (LED2) | 2050 mA (HC_SEL = HIGH) - enables xenon-replacement flash intensity using storage capacitor discharge. |
| LED Sense Voltage | 400 mV (±10%) - precise current regulation with minimal headroom loss across temperature and process variation. |
| I²C Speed | Up to 3.4 Mbps (high-speed mode) - allows rapid configuration of LED currents, modes, and safety timers during camera startup. |
| Standby Current | 2 µA typical - extends system standby time in always-on camera applications. |
| Switching Frequency | 1.92 MHz ±10% - permits use of compact 2.2-µH inductors and reduces EMI filtering requirements. |
| Thermal Shutdown | 140°C to 160°C with 20°C hysteresis - protects against sustained overloads during flash bursts. |
Pinout & Package
TPS61325YFFR is housed in a 2.20 mm × 1.96 mm, 20-pin NanoFree™ DSBGA (YFF) package with bottom-side solder balls. Thermal performance is optimized via low RθJB (13.3°C/W) and RθJA (75.9°C/W) metrics, supporting high-power flash operation in space-constrained mobile PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN | Power input | Main supply connection; requires local 10-µF bypass capacitor to minimize input ripple and enable stable precharge. |
| VOUT | Boost output | Regulated voltage node feeding storage capacitor; supports 3.825–5.7 V range in voltage mode or current-sink operation. |
| SW | Switch node | Connection to inductor; carries high-frequency switching current; must be routed with minimal loop area for EMI control. |
| LED1 / LED2 / LED3 | Current-sink returns | Feedback inputs regulating LED current via internal 400-mV reference; each supports independent digital current programming. |
| STRB0 / STRB1 | Strobe control | Dedicated hardware strobe inputs enabling sub-400-µs LED turn-on latency - critical for synchronized camera capture. |
| HC_SEL | Mode select | Configures device between direct-drive (445/890/445 mA) and energy-storage (1025/2050/1025 mA) flash modes; must not float. |
| TS | Temperature sense | Connects to NTC thermistor (220 kΩ) for LED junction temperature monitoring; triggers LEDHOT/LEDWARN flags. |
| GPIO/PG | Multi-function I/O | Default open-drain power-good output indicating VOUT regulation status; configurable as general-purpose input/output. |
| SDA / SCL | I²C interface | Standard bidirectional data/clock lines; support high-speed mode (3.4 Mbps) for fast register access and dynamic reconfiguration. |
| BAL | Capacitor balancing | Active balancing output for dual-cell supercapacitors; compensates leakage mismatch to extend storage life and stability. |
Key Features
| Feature | Design Value |
|---|---|
| Four operational modes | DC-light, flashlight, voltage-regulated boost, and standby (2 µA) - enables flexible power management across preview, capture, and idle states. |
| Automatic VF and ESR calibration | Compensates for LED forward-voltage drift and capacitor aging in real time - maintains consistent flash brightness over temperature and lifetime. |
| Zero-latency Tx-MASK input | Synchronizes LED flash timing with RF power amplifier activity to prevent interference during cellular transmission. |
| Integrated LED safety timer | Hardware-enforced flash duration limit prevents thermal damage during extended or repeated strobe events. |
| Privacy indicator output (INDLED) | Dedicated constant-current source (programmable 0–20 mA) drives low-VF indicator LEDs to signal camera activation - meets regulatory privacy requirements. |
Applications
| Smartphone Triple-LED Flash | Mobile Device DC-Light Illumination |
|---|---|
|
Use Scenario: High-intensity flash for low-light smartphone photography using three parallel white LEDs and a 10-mF supercapacitor. IC Role / Device Role / Timing Role: TPS61325YFFR acts as synchronous boost regulator + triple-channel constant-current sink, triggered by STRB0/STRB1 with <400-µs settling time. Use Value: Delivers 2050-mA peak current to LED2 while maintaining 400-mV sense accuracy and thermal shutdown protection at 140°C. |
Use Scenario: Always-on auxiliary lighting for video calls or front-camera preview in smartphones and tablets. IC Role / Device Role / Timing Role: TPS61325YFFR operates in DC-light mode with programmable current levels and integrated watchdog timer for fail-safe operation. Use Value: Achieves >95% efficiency at 111-mA load via power-save mode, reducing thermal load and extending battery runtime. |
| Xenon Flash Replacement | Privacy-Compliant Camera Activation |
|
Use Scenario: Compact, low-EMI alternative to xenon tubes in premium mobile devices requiring high CRI illumination. IC Role / Device Role / Timing Role: TPS61325YFFR manages energy transfer from storage capacitor to LEDs with calibrated ESR compensation and valley-current limiting. Use Value: Supports 1025/2050/1025-mA flash profiles with <16-µs current settling - matching xenon response speed without high-voltage circuitry. |
Use Scenario: Visual indication of active camera use in devices subject to GDPR, CCPA, or similar privacy regulations. IC Role / Device Role / Timing Role: TPS61325YFFR drives privacy indicator LED via INDLED pin while simultaneously powering main flash LEDs. Use Value: Provides independent, current-regulated 0–20-mA output with 0.04%/°C tempco - ensuring consistent indicator brightness across operating temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED flash driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61326YFFR | Identical pinout and feature set; differs only in I²C address (0x32 vs. TPS61325YFFR's 0x33) - avoids bus conflicts in multi-device systems. | Same triple-LED flash and DC-light use cases; selected when multiple TPS6132x devices share one I²C bus. | Drop-in replacement if I²C address conflict exists; no layout or firmware changes required beyond address update. |
| LM3648YFQR | 2.5-A max flash current (single channel), 1.2-MHz switching, no BAL/INDLED/TS pins; lacks supercapacitor balancing and privacy indicator output. | Suitable for dual-LED or lower-power flash systems where thermal monitoring and privacy compliance are not required. | Choose when cost-sensitive designs omit supercapacitor balancing, LED temperature sensing, or indicator LED drive capability. |
Compared with TPS61326YFFR, TPS61325YFFR offers identical functionality with a distinct I²C address for multi-device coexistence; compared with LM3648YFQR, it adds critical features for premium smartphone flash - including triple-channel programmability, supercapacitor balancing, and integrated privacy indicator drive.
Availability
TPS61325YFFR is available at Aetrix Electronics and suitable for smartphone camera modules, mobile device DC-lighting subsystems, and privacy-compliant imaging systems requiring stable component supply, traceable sourcing, and lifecycle continuity.
Supply support for TPS61325YFFR 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 mobile power solutions.
The TPS6132x product line was designed specifically for high-efficiency, multi-LED camera flash and DC-light applications in space-constrained portable electronics - integrating boost conversion, current regulation, thermal safety, and privacy features into a single 20-pin DSBGA package.
FAQ
What is the maximum flash current supported by the TPS61325YFFR in energy storage mode?
The TPS61325YFFR supports up to 2050 mA peak flash current on the LED2 channel when HC_SEL is asserted high and operating in energy storage mode. This enables xenon-level illumination intensity using a supercapacitor, with current accuracy maintained within ±10% across temperature and process variation. The TPS61325YFFR achieves this while retaining 400-mV LED sense voltage precision and integrated thermal protection.
How does the TPS61325YFFR handle LED temperature monitoring?
The TPS61325YFFR uses the TS pin to monitor LED junction temperature via an external 220-kΩ NTC thermistor. It generates LEDHOT and LEDWARN flags when resistance falls below 16.5 kΩ or 44.5 kΩ respectively, corresponding to defined hot and warning thresholds. This enables firmware-triggered flash current derating or shutdown - a critical safety function implemented directly in the TPS61325YFFR without host processor intervention.
Can the TPS61325YFFR operate as a standard voltage regulator, not just an LED driver?
Yes, the TPS61325YFFR operates in voltage-regulated boost mode with output range 3.825 V to 5.7 V, independent of LED load. In this mode, it maintains tight regulation even when input voltage exceeds nominal output - a key differentiator from basic LED drivers. The TPS61325YFFR delivers up to 1000 mA output current in voltage mode while sustaining >90% efficiency, making it suitable for powering other camera subsystems such as image sensors or ISP cores.
What is the purpose of the BAL pin on the TPS61325YFFR?
The BAL pin on the TPS61325YFFR provides active cell balancing for dual-cell supercapacitor configurations used in high-current flash systems. It sources or sinks up to ±15 mA to equalize voltage across series-connected cells, compensating for leakage current mismatches that would otherwise cause overvoltage on one cell. This extends supercapacitor lifetime and ensures safe, reliable flash operation - a capability unique to the TPS61325YFFR among comparable flash drivers.
Does the TPS61325YFFR support I²C communication at high speed?
Yes, the TPS61325YFFR supports I²C high-speed mode up to 3.4 Mbps, with timing validated for capacitive loads up to 400 pF. This enables rapid configuration of LED currents, strobe timing, safety timers, and operating modes during camera initialization - reducing latency between user command and flash readiness. The TPS61325YFFR maintains full register accessibility and interrupt reporting across standard, fast, and high-speed I²C modes.
TPS61325YFFR 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
TPS61325YFFR FAQ
1.How can I place an order for TPS61325YFFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61325YFFR 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 TPS61325YFFR reliable?
The price and inventory of TPS61325YFFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61325YFFR is usually 5 days.
3.What payment methods are accepted for TPS61325YFFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61325YFFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61325YFFR?
TPS61325YFFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61325YFFR 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 TPS61325YFFR?
For technical support, including TPS61325YFFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61325YFFR requirements.
6.How does Aetrix verify that TPS61325YFFR is sourced from the original manufacturer or authorized distributors?
All TPS61325YFFR 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 TPS61325YFFR meets industry standards.
7.What is the process for return or replacement of TPS61325YFFR?
All TPS61325YFFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61325YFFR, 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 TPS61325YFFR part is unused and in its original packaging.
Return procedure for TPS61325YFFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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