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Texas Instruments TPS61050AYZGT
- Part No.:
- TPS61050AYZGT
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 12-UFBGA, DSBGA
- Datasheet:
-
TPS61050AYZGT.pdf
- Description:
- IC LED DRV RGLTR PWM 12DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,397
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Product details
Overview
TPS61050AYZGT from Texas Instruments is a 12-pin DSBGA white LED driver IC implementing a 2-MHz synchronous boost converter with integrated linear current sink, supporting torch (75–1200 mA) and flash (up to 1200 mA) modes, 250-mV LED sense voltage, and I²C interface up to 400 kbps - used in smartphone camera flash subsystems.
For engineers reviewing the TPS61050AYZGT datasheet, TPS61050AYZGT pinout, TPS61050AYZGT application, or TPS61050AYZGT equivalent, key selection criteria include its zero-latency FLASH_SYNC strobe input, integrated safety timer, open/short LED protection, and dual-mode operation (current-regulated LED drive or voltage-boosted supply for audio amplifiers).
Technical Context
The TPS61050AYZGT uses a fixed-frequency (1.8–2.2 MHz), current-mode PWM control architecture with internal NMOS switch and synchronous NMOS rectifier, operating exclusively in continuous-conduction mode to minimize EMI and eliminate switch-node ringing. Its dual-path regulation combines boost-stage voltage control with a low-side linear current regulator referenced to a precise 250-mV feedback threshold.
It integrates a 3-bit ADC for LED forward-voltage monitoring, hardware TX-masking via GPIO, and a dedicated FLASH_SYNC input that enables sub-20-μs LED current transition from torch to flash level - critical for synchronized camera capture. The device supports four I²C-programmable operating modes: shutdown, torch, flash, and voltage-regulated boost (4.5 V / 5 V / 5.25 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 6 V - supports single-cell Li-ion (2.7–4.2 V) and Li-poly battery operation with headroom for aging and discharge. |
| LED Current Range | 75 mA to 1200 mA - programmable in torch/flash modes via I²C; accuracy ±12% over 200–1200 mA at TJ = 50°C. |
| Switching Frequency | 1.8–2.2 MHz (typ. 2 MHz) - enables use of compact 2.2-μH inductors and reduces input ripple current. |
| LED Sense Voltage | 250 mV (typ.) - low dropout across internal current-sense resistor improves power efficiency in high-current LED drive. |
| I²C Interface Speed | Up to 400 kbps (fast mode) - allows rapid brightness updates and mode switching without MCU overhead. |
| Shutdown Current | 0.3 μA (typ.) - minimizes battery drain during idle; LED pin goes high-impedance to prevent leakage current. |
| Thermal Shutdown | 140–160°C (typ. 160°C) - protects against sustained overload; hysteresis of 20°C ensures stable recovery. |
Pinout & Package
TPS61050AYZGT is housed in a 12-pin DSBGA (Die Size Ball Grid Array) package measuring 1.96 mm × 1.46 mm with 0.4-mm ball pitch. The package features exposed thermal pad internally connected to PGND for enhanced thermal dissipation in space-constrained mobile applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN | Power Input | Main input supply connection; must be decoupled with ≥10-μF ceramic capacitor near package. |
| VOUT | Boost Output | Regulated output node feeding LED anode or external load; capable of 4.5–5.25 V in voltage mode. |
| SW | Switch Node | Connection to inductor switch side; carries high di/dt; requires tight layout to minimize EMI. |
| LED | Current Sense | Low-side current-sense input tied to LED cathode; regulates current via 250-mV reference. |
| FLASH_SYNC | Hardware Strobe | Level-sensitive input triggering immediate LED current step from torch to flash level with zero latency. |
| SCL / SDA | I²C Interface | Standard bidirectional I²C bus lines; require pull-up resistors (typically 2.2–4.7 kΩ to AVIN). |
| GPIO | Configurable I/O | Programmable as logic input or open-drain output (TPS61050-specific); supports TX masking and status signaling. |
| PGND / AGND | Ground Returns | Separate power (PGND) and analog (AGND) grounds; must be joined at single point under IC for noise isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency FLASH_SYNC strobe | Enables sub-20-μs LED current transition for precise camera flash synchronization without software delay. |
| Integrated safety timer (STIM) | User-programmable flash duration limiter prevents thermal damage during extended high-current LED operation. |
| Open/short LED fault protection | Detects open-circuit (limits VOUT to 6 V) and short-circuit (clamps ILED) conditions; asserts LED FAILURE flag via I²C. |
| Low-light dimming mode | Extends usable brightness range below 75 mA using pulse-width modulation on GPIO or SFT signal. |
| 250-mV LED sense threshold | Minimizes power loss in current-sense path, enabling >96% peak efficiency at 1200 mA LED load. |
Applications
| Smartphone Camera Flash | Mobile Audio Power Supply |
|---|---|
|
Use Scenario: Dual-mode illumination for smartphone rear/front cameras requiring instant flash response and adjustable torch brightness. IC Role / Device Role / Timing Role: LED current regulator and boost controller; FLASH_SYNC input synchronizes LED turn-on with image sensor exposure timing. Use Value: Eliminates shutter lag by enabling <20-μs LED current step change, while integrated safety timer prevents thermal runaway during burst capture. |
Use Scenario: Powering Class-D audio amplifier in handheld devices where battery voltage falls below required amplifier rail (e.g., 5 V). IC Role / Device Role / Timing Role: Voltage-regulated boost converter; configured via I²C to deliver stable 5 V output independent of LED function. Use Value: Shares same IC footprint and control interface for both flash and audio supply, reducing BOM count and PCB area. |
| Wearable Health Sensor Illumination | Industrial Handheld Barcode Scanner |
|
Use Scenario: Pulsed red/IR LED drive for photoplethysmography (PPG) in smartwatches with strict power and size constraints. IC Role / Device Role / Timing Role: Precision current source with programmable low-current dimming; GPIO used for external trigger coordination. Use Value: 3-bit ADC monitors LED VF drift over temperature, enabling closed-loop brightness compensation for consistent optical output. |
Use Scenario: High-intensity illumination for 1D/2D barcode reading in rugged industrial scanners operating from 3.3-V or 3.6-V batteries. IC Role / Device Role / Timing Role: High-efficiency boost + current sink driving multiple parallel LEDs; FLASH_SYNC triggered by scanner decode engine. Use Value: Delivers 1200 mA peak current with <12% accuracy and thermal shutdown at 160°C, ensuring reliability in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61052YZGR | Includes ENVM hardware voltage-mode enable pin; lacks GPIO functionality; identical DSBGA-12 package and pinout. | Preferred when system requires hardware-triggered voltage-mode activation (e.g., hands-free audio amp enable), not software-only control. | Select TPS61052YZGR if hardware ENVM signal simplifies system timing; otherwise TPS61050AYZGT offers greater flexibility via GPIO and TX masking. |
| RT8532GQW | Fixed 5-V output voltage mode only; no I²C interface; uses external current-sense resistor; QFN-16 package (4×4 mm). | Suitable for cost-sensitive designs where programmability and compactness are secondary to simplicity and unit cost. | Choose RT8532GQW only for static, non-synchronized LED drive with no need for flash timing or firmware control. |
Compared with TPS61052YZGR and RT8532GQW, the TPS61050AYZGT uniquely combines zero-latency hardware strobe, GPIO-configurable I/O, and full I²C programmability in the smallest footprint (1.96×1.46 mm), making it optimal for space-constrained, feature-rich mobile imaging systems.
Availability
TPS61050AYZGT is available at Aetrix Electronics and suitable for smartphone camera modules, portable medical sensors, industrial barcode scanners, and wearable illumination systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS61050AYZGT 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 experience in mobile power solutions.
The TPS6105x product line was designed specifically for high-efficiency, space-constrained white LED flash and torch applications in smartphones and portable imaging devices, integrating boost conversion, current regulation, and intelligent protection in a single chip.
FAQ
What is the primary function of the FLASH_SYNC pin on the TPS61050AYZGT?
The FLASH_SYNC pin on the TPS61050AYZGT is a level-sensitive hardware strobe input that triggers instantaneous LED current transition from torch to flash level with zero latency. When pulled high (to AVIN), it forces the device to regulate at the programmed flash current; when low (GND), it reverts to torch mode. This eliminates software-induced delays, enabling precise synchronization with camera sensor exposure timing - a critical requirement in modern smartphone imaging systems using the TPS61050AYZGT.
Does the TPS61050AYZGT support both current-regulated LED drive and voltage-regulated boost output?
Yes, the TPS61050AYZGT supports dual-mode operation via I²C register configuration. In current-regulator mode, it drives white LEDs with programmable torch/flash currents up to 1200 mA using the LED pin as a 250-mV sense reference. In voltage-regulator mode, it delivers regulated outputs of 4.5 V, 5 V, or 5.25 V to external loads such as audio amplifiers - with the LED path disconnected. This dual functionality is implemented within the same TPS61050AYZGT die and package, eliminating need for separate power rails.
How does the TPS61050AYZGT protect against LED failure conditions?
The TPS61050AYZGT provides comprehensive LED fault protection. In open-circuit failure, the control loop drives VOUT higher until the overvoltage protection (OVP) limits output to 6 V (typ.), then asserts the LED FAILURE (LF) flag. In short-circuit failure, the internal current limiter caps ILED at the programmed value (e.g., 1200 mA), preventing excessive power dissipation. Both conditions are reported via I²C status registers, allowing host firmware to respond appropriately - all implemented natively in the TPS61050AYZGT without external components.
What is the significance of the 250-mV LED sense voltage specification for the TPS61050AYZGT?
The 250-mV LED sense voltage is the precise reference threshold across the internal current-sense element that determines regulated LED current. Because power loss in the sense path equals ILED × 0.25 V, this low value directly enables high efficiency - especially at high currents (e.g., 1200 mA yields only 300 mW sense loss). It also minimizes thermal drift impact and allows accurate current regulation down to low levels (75 mA), making the TPS61050AYZGT suitable for both high-brightness flash and low-power always-on torch applications.
Can the TPS61050AYZGT be used without an I²C controller in a system?
No - the TPS61050AYZGT requires I²C initialization to exit reset and configure operating mode (torch/flash/voltage/shutdown), current levels, safety timer, and other parameters. Unlike some LED drivers with default pin-strapped modes, the TPS61050AYZGT has no factory-default operational state; all functional behavior is defined through I²C writes to its internal registers. Therefore, a microcontroller or baseband processor with I²C capability is mandatory for basic operation of the TPS61050AYZGT.
TPS61050AYZGT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 6V
- Voltage - Output:
- 5.5V
- Current - Output / Channel:
- 1.2A (Flash)
- Frequency:
- 2MHz
- Dimming:
- PWM
- Applications:
- Camera Flash
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DSBGA
TPS61050AYZGT FAQ
1.How can I place an order for TPS61050AYZGT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61050AYZGT 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 TPS61050AYZGT reliable?
The price and inventory of TPS61050AYZGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61050AYZGT is usually 5 days.
3.What payment methods are accepted for TPS61050AYZGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61050AYZGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61050AYZGT?
TPS61050AYZGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61050AYZGT 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 TPS61050AYZGT?
For technical support, including TPS61050AYZGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61050AYZGT requirements.
6.How does Aetrix verify that TPS61050AYZGT is sourced from the original manufacturer or authorized distributors?
All TPS61050AYZGT 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 TPS61050AYZGT meets industry standards.
7.What is the process for return or replacement of TPS61050AYZGT?
All TPS61050AYZGT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61050AYZGT, 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 TPS61050AYZGT part is unused and in its original packaging.
Return procedure for TPS61050AYZGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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