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Texas Instruments LM3560TLX/NOPB
- Part No.:
- LM3560TLX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-WFBGA, DSBGA
- Datasheet:
-
LM3560TLX/NOPB.pdf
- Description:
- IC LED DRVR RGLTR I2C 1A 16DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,707
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Product details
Overview
LM3560TLX/NOPB from Texas Instruments is a synchronous boost flash driver IC with dual 1-A high-side current sources (2-A total), designed for camera phone LED flash systems. It operates from 2.5 V to 5.5 V input, delivers up to 2 A flash current into a single LED or 1 A per LED in dual-LED configurations, and integrates a 2-MHz fixed-frequency boost converter with overvoltage protection and thermal sensing via NTC.
For engineers reviewing the LM3560TLX/NOPB datasheet, LM3560TLX/NOPB pinout, LM3560TLX/NOPB application, or LM3560TLX/NOPB equivalent, key selection considerations include hardware-triggered flash/torch control (STROBE, TX1/TORCH, TX2), I²C-programmable current (31.25 mA–2 A), 4-bit VLED monitoring ADC, and integrated open/short LED fault detection.
Technical Context
The LM3560TLX/NOPB implements a constant-frequency synchronous boost architecture with adaptive regulation: it switches at 2 MHz when VOUT > VIN – 150 mV to maintain ≥300 mV headroom across both current sources, and enters pass mode (PFET on) when VIN exceeds VLED + headroom, minimizing conduction loss. Its dual high-side current sources operate independently, supporting grounded-cathode LED topologies and enabling combined 2-A flash output.
Control is hybrid: hardware pins (STROBE, HWEN, TX1/TORCH, TX2/INT) provide real-time flash enable, torch override, RF power amplifier synchronization, and shutdown; while an I²C-compatible interface (400 kHz) configures brightness registers, timeout, current limit, VIN monitor thresholds, and reads back flags including thermal shutdown, LED OVP, and TX interrupts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 2.5 V to 5.5 V - supports single-cell Li-ion and Li-poly battery operation without external LDO. |
| Max flash current | 2 A total (1 A per channel) - enables high-brightness single-LED flash or balanced dual-LED illumination. |
| Switching frequency | 2 MHz (±10%) - allows use of ultra-small 1-µH inductors and 10-µF ceramic capacitors for <26 mm² solution size. |
| I²C interface speed | 400 kHz - compatible with standard microcontroller I²C peripherals for register read/write and status polling. |
| LED current accuracy | ±3.5% at 1000 mA (25°C), ±5% over –40°C to +85°C - ensures consistent flash brightness across temperature and unit variation. |
| Thermal protection | Junction shutdown at 150°C (typ), recovery at 135°C (typ) - prevents permanent damage during sustained high-current operation. |
| VLED monitoring | Integrated 4-bit ADC - provides real-time LED forward voltage feedback for open/short detection and dynamic headroom management. |
Pinout & Package
The LM3560TLX/NOPB is housed in a 16-pin DSBGA package (1.96 mm × 1.96 mm, 0.4-mm pitch), optimized for space-constrained mobile camera modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LED1, LED2 | High-side current source outputs | Drive flash LEDs with grounded cathodes; each supports up to 1 A; can be paralleled for 2-A single-LED operation. |
| LEDI/NTC | Configurable terminal | Either 18-mA indicator current source (for message LED) or comparator input for NTC thermistor-based thermal foldback. |
| STROBE | Hardware flash enable | Active-high logic input directly triggers flash pulse at programmed current; internal 300-kΩ pulldown ensures safe default-off state. |
| TX1/TORCH/GPIO1, TX2/INT/GPIO2 | Dual-function sync/interrupt pins | Programmable as active-high/low RF PA sync inputs (force torch during transmission) or interrupt outputs (e.g., thermal alert). |
| HWEN | Hardware enable | Active-high input; pulling low forces immediate shutdown - critical safety feature during system software failure. |
| SDA, SCL | I²C interface | Standard bidirectional data/clock lines; high-impedance in shutdown to minimize system leakage current. |
| IN, OUT, SW, GND | Power path terminals | IN accepts 2.5–5.5 V supply; OUT delivers regulated boost voltage; SW connects to internal NMOS/PMOS switches; GND is power ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent high-side current sources | Enables flexible LED configuration: single 2-A flash, dual 1-A flash, or mixed flash/torch operation without external current-sense resistors. |
| Hardware flash/torch control with RF sync | TX1/TX2 pins allow sub-µs response to PA events - reduces battery current spikes during cellular transmission by forcing torch-level LED current. |
| Integrated thermal foldback | NTC comparator on LEDI/NTC pin generates interrupt and scales back LED current when temperature exceeds threshold - prevents LED degradation. |
| Four operational modes | Torch (continuous low-current), Flash (high-current pulse), Privacy Indicate (low-duty-cycle blink), Message Indicator (static LED bias) - all configurable via I²C. |
| Open/short LED detection | Monitors VLED via 4-bit ADC and flags faults (e.g., open circuit = VLED > 4.35 V; short = VLED < 0.4 V) - eliminates need for external fault monitoring circuitry. |
Applications
| Camera Phone Flash | Mobile Device Privacy Indicator |
|---|---|
Use Scenario: High-intensity still-image capture in low-light conditions using dual-LED or single-LED flash arrays. IC Role / Device Role / Timing Role: Synchronous boost driver providing precise 2-A flash current with hardware-triggered STROBE timing and thermal derating. Use Value: Delivers consistent luminance across battery voltage range (2.5–5.5 V) and ambient temperature (–40°C to +85°C) while protecting LEDs from thermal runaway. |
Use Scenario: Visual privacy notification during video call or microphone activation on smartphones and tablets. IC Role / Device Role / Timing Role: Configurable message indicator mode driving low-current LED with programmable blink pattern via I²C registers. Use Value: Eliminates need for separate LED driver IC - uses same LM3560TLX/NOPB hardware resources (LEDI/NTC, brightness registers) for secondary UI function. |
| RF-Coordinated Torch Mode | White LED Biasing for Imaging Sensors |
Use Scenario: Maintaining visible illumination during cellular/Wi-Fi transmission where peak battery current must be limited. IC Role / Device Role / Timing Role: TX1/TX2 pins synchronize flash current reduction to PA enable pulses, switching from flash to torch mode within 2 µs. Use Value: Prevents brownout and audible noise in audio subsystems by capping instantaneous battery draw during concurrent RF + flash operation. |
Use Scenario: Continuous white LED bias for CMOS image sensor auto-focus assist or low-light preview illumination. IC Role / Device Role / Timing Role: Torch mode current source delivering stable 31.25–1000 mA with <±5% accuracy across temperature and input voltage. Use Value: Enables accurate exposure calibration and consistent preview brightness without requiring external current-setting components or calibration routines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED flash driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3554TLX/NOPB | Single 1.5-A high-side current source; no dual-LED support; lacks NTC input and privacy indicator mode. | Suitable only for single-LED flash; cannot drive parallel LEDs or implement thermal foldback with external NTC. | Select when board space or BOM count is prioritized over dual-LED flexibility and thermal safety features. |
| RT8542GQW | 2-A single-channel flash driver; includes built-in 1.2-MHz boost controller but no I²C interface - uses analog current programming via external resistor. | Requires external resistor network for current setting; no register-based diagnostics or mode control. | Choose for cost-sensitive designs where firmware control and fault reporting are not required. |
Compared with LM3560TLX/NOPB, LM3554TLX/NOPB offers smaller footprint but sacrifices dual-LED capability and thermal monitoring, while RT8542GQW trades programmability and diagnostics for lower component count and fixed-function simplicity.
Availability
LM3560TLX/NOPB is available at Aetrix Electronics and suitable for camera phone flash systems, mobile device privacy indicators, RF-coordinated torch applications, and white LED biasing for imaging sensors requiring stable component supply and long-term production continuity.
Supply support for LM3560TLX/NOPB 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 company specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and interface solutions.
The LM3560TLX/NOPB belongs to TI's mobile LED driver product line, engineered specifically for smartphone and tablet camera flash subsystems requiring high efficiency, compact size, and robust fault handling in battery-powered environments.
FAQ
What is the maximum continuous current the LM3560TLX/NOPB can deliver to a single LED?
The LM3560TLX/NOPB supports up to 2 A total flash current when both LED1 and LED2 current sources are configured to drive a single LED in parallel. This is achieved by tying LED1 and LED2 outputs together, with each source delivering up to 1 A under 25°C conditions and ±3.5% accuracy. At full load and elevated temperature, the guaranteed minimum remains 1.9 A per source pair due to thermal derating.
How does the LM3560TLX/NOPB handle thermal protection during extended flash operation?
The LM3560TLX/NOPB integrates junction-temperature monitoring with automatic shutdown at 150°C (typical) and recovery at 135°C (typical). Additionally, the LEDI/NTC pin supports external NTC thermistor connection: when configured as comparator input, it triggers current scale-back before thermal shutdown occurs, preserving LED lifetime and enabling graceful brightness reduction instead of abrupt cutoff.
Can the LM3560TLX/NOPB operate without I²C communication after initial configuration?
Yes - the LM3560TLX/NOPB retains all register settings (flash/torch current, timeout, current limit, etc.) in volatile memory and continues normal operation after power-up with default values or previously written settings. Hardware pins (STROBE, TX1, HWEN) remain fully functional without I²C activity, enabling basic flash/torch control even if the host processor is inactive or I²C bus is unavailable.
What is the purpose of the LEDI/NTC pin on the LM3560TLX/NOPB?
The LEDI/NTC pin on the LM3560TLX/NOPB is multifunctional: it serves either as an 18-mA high-side current source for message indicator LEDs (when configured via register), or as a comparator input for monitoring an external NTC thermistor connected between this pin and GND. In thermal sensing mode, it generates an interrupt and initiates LED current foldback when temperature exceeds the programmed threshold.
Does the LM3560TLX/NOPB support automatic LED open-circuit and short-circuit detection?
Yes - the LM3560TLX/NOPB includes built-in LED fault detection using its 4-bit VLED ADC. An open-circuit condition (e.g., disconnected LED) results in VLED exceeding 4.35 V, triggering the "LED Open" flag. A short-circuit causes VLED to drop below 0.4 V, setting the "LED Short" flag. Both conditions are reported in the status register and can generate interrupts on TX2/INT if enabled.
LM3560TLX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 2
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1A (Flash)
- Frequency:
- 2MHz
- Dimming:
- I2C
- Applications:
- Camera Flash
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DSBGA (2.5x2.12)
LM3560TLX/NOPB FAQ
1.How can I place an order for LM3560TLX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3560TLX/NOPB 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 LM3560TLX/NOPB reliable?
The price and inventory of LM3560TLX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3560TLX/NOPB is usually 5 days.
3.What payment methods are accepted for LM3560TLX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3560TLX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3560TLX/NOPB?
LM3560TLX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3560TLX/NOPB 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 LM3560TLX/NOPB?
For technical support, including LM3560TLX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3560TLX/NOPB requirements.
6.How does Aetrix verify that LM3560TLX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3560TLX/NOPB 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 LM3560TLX/NOPB meets industry standards.
7.What is the process for return or replacement of LM3560TLX/NOPB?
All LM3560TLX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3560TLX/NOPB, 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 LM3560TLX/NOPB part is unused and in its original packaging.
Return procedure for LM3560TLX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM3560TLX/NOPB Tags
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BCR402RE6327HTSA1
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BCR430UXTSA2
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
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