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Texas Instruments LM3560TLE/NOPB
- Part No.:
- LM3560TLE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-WFBGA, DSBGA
- Datasheet:
-
LM3560TLE/NOPB.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
- Shipping:
Inventory:1,157
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Product details
Overview
LM3560TLE/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, featuring 2-MHz fixed-frequency switching, I²C-compatible interface (400 kHz), and integrated NTC thermistor sensing for thermal current scaling. It delivers precise LED current control (31.25 mA–2 A) in camera phone flash applications requiring grounded-cathode LED configuration.
For engineers reviewing the LM3560TLE/NOPB datasheet, LM3560TLE/NOPB pinout, LM3560TLE/NOPB application, or LM3560TLE/NOPB equivalent, key selection considerations include hardware flash/torch enable (STROBE/HWEN), dual TX synchronization inputs for RF PA coordination, open/short LED fault detection, and 4-bit ADC-based VLED monitoring - all within a 1.96 mm × 1.96 mm DSBGA-16 package.
Technical Context
The LM3560TLE/NOPB integrates a synchronous boost converter with adaptive regulation to maintain ≥300 mV headroom across both current sources, enabling stable operation even as input voltage approaches LED forward voltage. Its dual high-side current sources operate independently or combined, supporting either two parallel LEDs or single-LED 2-A flash mode with pass-mode transition when VIN exceeds VLED + headroom.
Control is implemented via an I²C interface (400 kHz) with register-accessible torch/flash brightness, timeout, current limit, and VIN monitor thresholds. Hardware pins - STROBE (active-high flash trigger), HWEN (active-high shutdown), and dual TX inputs (configurable torch override or interrupt) - provide deterministic real-time response without software latency.
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 systems without external LDO. |
| Max Flash Current | 2 A total (1 A per channel) - enables high-brightness flash for smartphone rear cameras. |
| Switching Frequency | 2 MHz (±10%) - allows use of ultra-small 1-µH inductors and 10-µF ceramic output capacitors. |
| I²C Interface Speed | 400 kHz - compatible with standard Fast-mode I²C controllers in mobile SoCs. |
| Thermal Protection | Junction shutdown at 150°C (typical), auto-recovery at 135°C - prevents permanent damage during sustained high-current operation. |
| LED Fault Detection | Integrated open-circuit and short-circuit detection - reports via I²C flag register for system-level error handling. |
| Current Accuracy | ±3.5% at 1000 mA per channel (25°C), ±5% over –40°C to +85°C - ensures consistent flash luminance across temperature. |
Pinout & Package
LM3560TLE/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. The package supports solder-ball reflow and provides low thermal resistance (RθJA = 71.4°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1: LED1 | High-side current source output | Drives cathode-grounded flash LED1; supports up to 1 A continuous current. |
| A2/B2: OUT | Boost converter output | Regulated DC output node; requires 10-µF ceramic capacitor to GND for stability. |
| A3/B3: SW | Internal switch node | Connects to external 1-µH inductor; carries high di/dt switching current. |
| A4/B4: GND | Power ground | Primary return path for boost converter and LED current sources; must be low-impedance. |
| B1: LED2 | High-side current source output | Drives cathode-grounded flash LED2; independent programmability enables dual-LED asymmetry. |
| C1: LEDI/NTC | Configurable terminal | Either indicator LED current source (up to 20 mA) or NTC thermistor comparator input for thermal foldback. |
| C2: TX1/TORCH/GPIO1 | Multi-function I/O | Hardware torch enable, RF PA sync input (active-high or active-low), or general-purpose GPIO with 300-kΩ pulldown. |
| C3: STROBE | Hardware flash trigger | Active-high logic input; initiates flash pulse immediately, bypassing I²C latency. |
| C4: IN | Main power input | Connects to battery rail; requires ≥10-µF ceramic bypass capacitor to GND. |
| D1: TX2/INT/GPIO2 | Multi-function I/O | Second RF sync input, interrupt output (e.g., thermal alert), or GPIO with 300-kΩ pulldown. |
| D2: SDA | I²C data line | Open-drain bidirectional serial data; high-impedance during shutdown. |
| D3: SCL | I²C clock line | Input-only serial clock; high-impedance during shutdown. |
| D4: HWEN | Hardware enable | Active-high logic input; pulls device into full shutdown (<0.02 µA ISHDN) when low. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent high-side current sources | Enables grounded-cathode LED layout - simplifies PCB routing and improves EMI performance vs. low-side drivers. |
| Hardware flash/torch control (STROBE + HWEN) | Guarantees sub-microsecond flash activation and failsafe shutdown - critical for safety-critical imaging sequences. |
| RF power amplifier synchronization (TX1/TX2) | Reduces flash current on demand during TX burst events - prevents battery droop and maintains cellular transmission integrity. |
| Integrated 4-bit ADC for VLED monitoring | Provides real-time LED forward voltage feedback - enables dynamic current adjustment to compensate for aging or temperature drift. |
| NTC thermistor interface with interrupt | Triggers automatic current scale-back before thermal runaway - eliminates need for external thermal management circuitry. |
| Four operational modes (Torch/Flash/Privacy Indicate/Message) | Supports multi-function LED usage - e.g., privacy indicator (low-current pulsing) without firmware overhead. |
Applications
| Smartphone Camera Flash | Tablet Dual-LED Illumination |
|---|---|
|
Use Scenario: High-intensity rear-camera flash in compact smartphones with single-cell Li-ion battery. IC Role / Device Role / Timing Role: Synchronous boost driver delivering 2-A peak current to white LEDs while maintaining <300 mV headroom under varying VIN. Use Value: Enables consistent flash luminance across battery discharge (2.5–4.2 V), eliminating brightness falloff in low-SOC conditions. |
Use Scenario: Dual-LED front-facing illumination for video conferencing in tablets. IC Role / Device Role / Timing Role: Independent current control of LED1 and LED2 allows asymmetric brightness tuning for glare reduction and uniform facial lighting. Use Value: Eliminates need for separate LED drivers - reduces BOM count and PCB area by consolidating two 1-A channels in one 1.96 mm² package. |
| Mobile Device Privacy Indicator | Industrial Barcode Scanner Flash |
|
Use Scenario: Low-power visual indicator showing camera/mic activity status in privacy-sensitive devices. IC Role / Device Role / Timing Role: Configured in Message Indicator mode using LEDI/NTC pin to drive discrete indicator LED at programmable 1–20 mA. Use Value: Provides certified privacy signaling without dedicated microcontroller GPIO - meets regulatory requirements for hardware-enforced status visibility. |
Use Scenario: Short-duration, high-current flash for barcode reading in rugged handheld scanners. IC Role / Device Role / Timing Role: STROBE-triggered flash with <2 µs current settling time ensures precise timing alignment with image capture sensor exposure window. Use Value: Guarantees reliable decode of fast-moving barcodes by synchronizing flash pulse edge to sensor integration start. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED flash driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3554TLE/NOPB | Single 1.5-A high-side current source; no dual-TX sync; no NTC interface; same DSBGA-16 package. | Lacks independent dual-LED control and RF PA coordination - suitable only for single-LED flash with simpler timing requirements. | Select when cost sensitivity outweighs need for dual-LED flexibility or thermal monitoring. |
| RT8542GQW | 2-A single-channel flash driver; 1.5-MHz switching; no integrated ADC or NTC comparator; QFN-16 package (3 mm × 3 mm). | Requires external thermal sensing circuitry; larger footprint; lacks hardware torch mode and privacy indicator capability. | Choose for legacy designs already using QFN layouts or where I²C register access is not required. |
Compared with LM3554TLE/NOPB and RT8542GQW, the LM3560TLE/NOPB uniquely combines dual independent current sources, hardware-based RF sync, and on-die thermal protection - making it the only option capable of meeting simultaneous requirements for dual-LED smartphone flash, battery-aware TX coordination, and certified thermal safety.
Availability
LM3560TLE/NOPB is available at Aetrix Electronics and suitable for smartphone camera modules, tablet imaging subsystems, and industrial barcode scanner designs requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.
Supply support for LM3560TLE/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 LM3560TLE/NOPB belongs to TI's high-efficiency LED flash driver product line, engineered specifically for space-constrained, battery-powered imaging systems demanding precision current control, thermal resilience, and hardware-level timing determinism.
FAQ
What is the maximum total flash current supported by the LM3560TLE/NOPB?
The LM3560TLE/NOPB supports up to 2 A total flash current, achieved by combining its dual 1-A high-side current sources (LED1 and LED2) into a single LED path. This is confirmed in the datasheet's Features section and Electrical Characteristics table under "ILED accuracy" for 1000-mA per current source at 2000 mA total. Operation at 2 A requires proper thermal design due to power dissipation limits.
Does the LM3560TLE/NOPB support hardware-triggered flash without I²C communication?
Yes, the LM3560TLE/NOPB supports fully autonomous hardware-triggered flash via the STROBE pin. Driving STROBE high initiates the flash pulse immediately, independent of I²C register state or host processor activity. This is explicitly documented in the Pin Functions table and Feature Description section, ensuring deterministic timing for critical imaging sequences.
How does the LM3560TLE/NOPB handle thermal protection during extended flash operation?
The LM3560TLE/NOPB implements dual thermal safeguards: (1) an internal comparator monitors an external NTC thermistor connected to LEDI/NTC, triggering current scale-back upon temperature rise; and (2) junction thermal shutdown activates at 150°C (typical), disabling outputs until temperature drops to 135°C. Both mechanisms are detailed in Sections 7.3.5 and 6.1 of the datasheet.
Can the LM3560TLE/NOPB drive two LEDs independently at different current levels?
Yes, the LM3560TLE/NOPB provides independent programmability for LED1 and LED2 via separate torch and flash brightness registers (addresses 0xA0 and 0xB0). The datasheet's Feature Description (Section 7.3.2) confirms independent turn-on/off control and current setting - enabling asymmetric illumination for glare control or dual-spectrum lighting in advanced camera modules.
What package type and dimensions does the LM3560TLE/NOPB use?
The LM3560TLE/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 is specified in the Device Information table and Mechanical, Packaging, and Orderable Information section (page 46) of the datasheet, and is consistent across all LM3560 orderable variants including the /NOPB suffix.
LM3560TLE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WFBGA, DSBGA
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 2
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1A
- 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)
LM3560TLE/NOPB FAQ
1.How can I place an order for LM3560TLE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3560TLE/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 LM3560TLE/NOPB reliable?
The price and inventory of LM3560TLE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3560TLE/NOPB is usually 5 days.
3.What payment methods are accepted for LM3560TLE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3560TLE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3560TLE/NOPB?
LM3560TLE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3560TLE/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 LM3560TLE/NOPB?
For technical support, including LM3560TLE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3560TLE/NOPB requirements.
6.How does Aetrix verify that LM3560TLE/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3560TLE/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 LM3560TLE/NOPB meets industry standards.
7.What is the process for return or replacement of LM3560TLE/NOPB?
All LM3560TLE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3560TLE/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 LM3560TLE/NOPB part is unused and in its original packaging.
Return procedure for LM3560TLE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM3560TLE/NOPB Tags
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