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Texas Instruments LM3560TLX-20/NOPB
- Part No.:
- LM3560TLX-20/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-WFBGA, DSBGA
- Datasheet:
-
LM3560TLX-20/NOPB.pdf
- Description:
- IC LED DRVR RGLTR I2C 1A 16DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,094
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Product details
Overview
LM3560TLX-20/NOPB from Texas Instruments is a synchronous boost flash driver IC with dual 1-A high-side current sources (2-A total), operating from 2.5 V to 5.5 V input, delivering up to 2 A flash current into a single white LED, and featuring I²C-compatible control, hardware STROBE/flash enable, and NTC-based thermal sensing for camera phone LED flash systems.
For engineers reviewing the LM3560TLX-20/NOPB datasheet, LM3560TLX-20/NOPB pinout, LM3560TLX-20/NOPB application, or LM3560TLX-20/NOPB equivalent, this page provides verified pin functions, real-world torch/flash timing behavior, thermal scale-back implementation details, hardware synchronization logic for RF PA events, and validated alternative flash drivers for mobile imaging power management.
Technical Context
The LM3560TLX-20/NOPB integrates a fixed 2-MHz synchronous boost converter with adaptive pass-mode operation: it switches only when VOUT > VIN – 150 mV, and enters PFET pass-through mode above that threshold to minimize losses. Its dual high-side current sources maintain ≥300 mV regulation headroom across LED1/LED2 under all load conditions.
Hardware control includes active-high STROBE for direct flash triggering, dual TX inputs (TX1/TORCH and TX2/INT) configurable for RF PA pulse synchronization (torch scaling or shutdown), and HWEN for system-level hardware shutdown. The integrated 4-bit ADC monitors VLED, while an NTC comparator enables closed-loop thermal current scaling.
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 rails without external LDO pre-regulation. |
| Total Flash Current | Up to 2 A - achieved by paralleling both 1-A current sources into one LED, enabling high-brightness still-image capture. |
| Switching Frequency | 2 MHz (±10%) - allows use of ultra-small 1-µH inductors and 10-µF ceramic output capacitors, reducing solution size to <26 mm². |
| I²C Interface Speed | 400 kHz - compatible with standard fast-mode I²C controllers in mobile SoCs for real-time brightness and timeout programming. |
| Thermal Protection | Junction shutdown at 150°C (typical), recovery at 135°C - ensures safe operation during sustained flash bursts in compact camera modules. |
| LED Voltage Monitoring | Integrated 4-bit ADC - provides 16-level VLED readback for open-circuit detection and dynamic headroom optimization. |
| Current Accuracy | ±3.5% at 1000 mA per source (25°C), ±5% over –40°C to +85°C - enables precise brightness calibration across temperature. |
Pinout & Package
LM3560TLX-20/NOPB is housed in a 16-pin DSBGA package (1.96 mm × 1.96 mm, 0.5-mm pitch), optimized for space-constrained mobile camera modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1: LED1 | High-side current source output | Drives cathode-grounded flash LED1; supports up to 1 A continuous or pulsed current. |
| A2/B2: OUT | Boost converter output | Regulated DC output node; requires 10-µF ceramic capacitor to GND for stability and ripple suppression. |
| A3/B3: SW | Internal switch node | Connects to external 1-µH inductor; carries peak switching current; critical for EMI layout. |
| A4/B4: GND | Power ground | Primary return path for boost converter and current sources; must be low-impedance plane under IC. |
| B1: LED2 | High-side current source output | Drives cathode-grounded flash LED2; independently programmable; can be paralleled with LED1 for 2-A flash. |
| C1: LEDI/NTC | Configurable terminal | Either indicator LED current source (up to 18 mA) or NTC thermistor comparator input for thermal foldback. |
| C2: TX1/TORCH/GPIO1 | Multi-function I/O | Hardware torch enable (active-high), RF PA sync input (torch scaling), or GPIO; internal 300-kΩ pulldown. |
| C3: STROBE | Hardware flash trigger | Active-high direct flash activation; overrides I²C state; internal 300-kΩ pulldown ensures safe default-off. |
| C4: IN | Main power input | 2.5–5.5 V supply; requires ≥10-µF ceramic bypass capacitor to GND near pin for transient response. |
| D1: TX2/INT/GPIO2 | Multi-function I/O | Second RF PA sync input, interrupt output (e.g., thermal alert), or GPIO; internal 300-kΩ pulldown. |
| D2: SDA | I²C data line | Open-drain bidirectional interface; high-impedance during shutdown; requires external pullup. |
| D3: SCL | I²C clock line | Input-only clock; high-impedance during shutdown; requires external pullup. |
| D4: HWEN | Hardware enable | Active-high logic input; pulling low forces immediate shutdown with <0.02 µA quiescent current. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent high-side current sources | Enables grounded-cathode LED layout, simplifying PCB routing and thermal management in camera modules. |
| Four hardware-configurable operating modes | Torch, Flash, Privacy Indicate, and Message Indicator - each with distinct current profiles and timing behavior. |
| Adaptive pass-mode boost architecture | Reduces switching losses when input voltage exceeds LED forward voltage plus headroom, improving efficiency up to 90%. |
| Integrated LED thermal sensing | NTC comparator triggers automatic current scale-back before junction overheating, preserving LED lifetime and color accuracy. |
| Open/short LED fault detection | Monitors VLED via 4-bit ADC and OVP comparator to flag failed LEDs or wiring faults during boot or runtime. |
Applications
| Camera Phone Flash | Mobile Video Torch |
|---|---|
Use Scenario: High-intensity still-image capture in low-light smartphone cameras requiring precise 2-A flash pulses with sub-millisecond timing control. IC Role / Device Role / Timing Role: Primary flash driver managing dual LED strings, synchronizing with image sensor exposure and RF PA events via TX1/TX2. Use Value: Enables consistent 2-A flash output across battery voltage range (3.2–4.2 V), with hardware STROBE guaranteeing deterministic turn-on latency <2 µs. |
Use Scenario: Continuous low-power illumination for video recording, requiring stable 187.5-mA torch current with minimal thermal rise. IC Role / Device Role / Timing Role: Constant-current torch source with hardware TORCH enable (TX1) and I²C-adjustable brightness levels. Use Value: Delivers accurate 187.5-mA torch current (±5% over temperature), with <160 µs settling time from flash-to-torch transition for seamless mode switching. |
| Privacy Indicator | Thermally Adaptive LED Bias |
Use Scenario: Visual privacy feedback in smartphones or tablets, where flash LEDs double as status indicators during microphone/camera disable events. IC Role / Device Role / Timing Role: Low-current message indicator driver using LEDI/NTC pin in indicator mode (up to 18 mA). Use Value: Provides programmable 1–18 mA indicator current with headroom-aware scaling, ensuring visibility across varying LED VF and battery voltage. |
Use Scenario: Thermal protection for high-brightness flash LEDs in sealed camera modules where ambient temperature rises rapidly during burst capture. IC Role / Device Role / Timing Role: Closed-loop thermal manager using NTC-connected LEDI/NTC pin to reduce flash current before junction exceeds 125°C. Use Value: Implements real-time current foldback based on NTC voltage threshold (1 V ±3%), preventing LED degradation without firmware intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED flash driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3554TMX/NOPB | Single 1.5-A high-side current source; no dual-LED independent control; lacks NTC comparator and LEDI/NTC indicator mode. | Suitable for cost-sensitive single-LED flash designs but cannot support parallel 2-A operation or thermal sensing. | Select when only one flash LED is required and thermal monitoring is handled externally. |
| TPS61310DSQR | Boost converter only (no integrated current sources); requires external MOSFETs and current-sense resistors for LED drive. | Offers higher flexibility in current programming and topology but increases BOM count, layout complexity, and footprint. | Select when custom current profiles, multi-string configurations, or >2-A flash currents are needed beyond LM3560TLX-20/NOPB's integrated capability. |
Compared with LM3560TLX-20/NOPB, LM3554TMX/NOPB reduces integration (no dual-source or NTC sensing) but lowers cost for simpler flash needs, while TPS61310DSQR shifts complexity to external components to enable scalable, high-current or multi-LED architectures beyond the fixed 2-A dual-source limit.
Availability
LM3560TLX-20/NOPB is available at Aetrix Electronics and suitable for smartphone camera modules, mobile video lighting systems, and embedded imaging devices requiring stable component supply, full lifecycle traceability, and guaranteed long-term availability for production programs.
Supply support for LM3560TLX-20/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 leader specializing in analog and embedded processing technologies, with decades of expertise in power management and mobile interface solutions.
The LM3560TLX-20/NOPB belongs to TI's high-efficiency LED flash driver product line, engineered specifically for space-constrained, thermally sensitive mobile imaging applications demanding precise current control and hardware-level synchronization.
FAQ
What is the maximum flash current supported by the LM3560TLX-20/NOPB?
The LM3560TLX-20/NOPB supports up to 2 A total flash current by combining its two independent 1-A high-side current sources (LED1 and LED2) into a single LED string. Each source is programmable from 31.25 mA to 1000 mA, and the combined 2-A output is specified with ±3.5% accuracy at 25°C and ±5% over –40°C to +85°C. This capability is explicitly confirmed in the Electrical Characteristics table under "ILED accuracy" for ILED1 + ILED2 at 1000-mA per source settings.
How does the LM3560TLX-20/NOPB handle thermal protection for flash LEDs?
The LM3560TLX-20/NOPB implements thermal protection via its LEDI/NTC pin configured as an NTC thermistor comparator input. When an NTC is connected, the internal comparator trips at 1 V ±3%, generating an interrupt flag and enabling automatic current scale-back through firmware or hardware mode selection. Additionally, the device includes junction thermal shutdown at 150°C (typical), which disables all outputs until temperature falls to 135°C (typical). Both mechanisms are documented in Sections 7.3.4 and 6.1 of the datasheet.
Can the LM3560TLX-20/NOPB operate without I²C communication?
Yes, the LM3560TLX-20/NOPB supports fully hardware-controlled operation: STROBE enables flash pulses, TX1/TORCH enables torch mode, and HWEN provides hardware shutdown-all without I²C. Default current levels (flash/torch) and timeout are set by internal registers at power-up, and the device remains functional even if SDA/SCL are unconnected. However, dynamic brightness adjustment, fault flag reading, and NTC threshold configuration require I²C access, as stated in Section 7.5 and the Pin Functions table.
What package type and dimensions does the LM3560TLX-20/NOPB use?
The LM3560TLX-20/NOPB uses a 16-pin DSBGA (Die Size Ball Grid Array) package with nominal body size 1.96 mm × 1.96 mm and 0.5-mm ball pitch. This ultra-compact footprint is specified in the "Device Information" section and confirmed in the Mechanical, Packaging, and Orderable Information chapter (page 46). It is designed for automated placement in high-density mobile camera module PCBs and requires microvia-in-pad or solder-mask-defined pad layout per TI's DSBGA assembly guidelines.
Does the LM3560TLX-20/NOPB support independent control of two separate flash LEDs?
Yes, the LM3560TLX-20/NOPB provides true independent control of LED1 and LED2 via bits [4:3] of the Enable Register and separate Torch Brightness (0xA0) and Flash Brightness (0xB0) registers. Each current source can be enabled/disabled individually and programmed to different current levels-e.g., 1000 mA on LED1 and 500 mA on LED2-enabling asymmetric illumination or dual-camera flash coordination. This functionality is detailed in Section 7.3.2 and Register Descriptions (pages 30–38).
LM3560TLX-20/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-20/NOPB FAQ
1.How can I place an order for LM3560TLX-20/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3560TLX-20/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-20/NOPB reliable?
The price and inventory of LM3560TLX-20/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-20/NOPB is usually 5 days.
3.What payment methods are accepted for LM3560TLX-20/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3560TLX-20/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3560TLX-20/NOPB?
LM3560TLX-20/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3560TLX-20/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-20/NOPB?
For technical support, including LM3560TLX-20/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3560TLX-20/NOPB requirements.
6.How does Aetrix verify that LM3560TLX-20/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3560TLX-20/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-20/NOPB meets industry standards.
7.What is the process for return or replacement of LM3560TLX-20/NOPB?
All LM3560TLX-20/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3560TLX-20/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-20/NOPB part is unused and in its original packaging.
Return procedure for LM3560TLX-20/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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