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Texas Instruments LM3560TLE-20/NOPB
- Part No.:
- LM3560TLE-20/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-WFBGA, DSBGA
- Datasheet:
-
LM3560TLE-20/NOPB.pdf
- Description:
- IC LED DRVR RGLTR I2C 1A 16DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:793
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Product details
Overview
LM3560TLE-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 LED or 1 A per LED in dual-LED configurations, and featuring I²C-compatible control, hardware STROBE/flash enable, and NTC-based thermal sensing for smartphone camera flash systems.
For engineers reviewing the LM3560TLE-20/NOPB datasheet, LM3560TLE-20/NOPB pinout, LM3560TLE-20/NOPB application, or LM3560TLE-20/NOPB equivalent, key selection criteria include its 2-MHz fixed-frequency boost architecture, 300-mV current-source headroom voltage, 4-bit VLED ADC, programmable flash/torch current range (31.25 mA–2 A), and DSBGA-16 package compatibility with space-constrained mobile designs.
Technical Context
The LM3560TLE-20/NOPB integrates a 2-MHz synchronous boost converter with adaptive regulation that maintains ≥300 mV headroom across LED1/LED2 current sources, enabling stable operation over 2.5–5.5 V input while supporting pass-mode operation when VIN exceeds VLED + headroom. Its dual high-side current sources operate independently or combined, with hardware-controlled torch/flash mode switching via STROBE, TX1/TORCH, and TX2 pins.
Control is implemented through a 400-kHz I²C interface managing flash/torch brightness registers, timeout duration, current limit settings (1.6–3.6 A), VIN monitor thresholds, and flag reporting for OVP, thermal shutdown, LED open/short, and TX interrupts. An integrated comparator monitors external NTC thermistors to scale back LED current during thermal events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports direct connection to Li-ion battery rails without pre-regulation. |
| Max Flash Current | 2 A total (1 A per channel) - enables high-brightness single-LED flash operation in compact camera modules. |
| Switching Frequency | 2 MHz ±10% - allows use of ultra-small 1-µH inductors and 10-µF ceramic capacitors for <26 mm² solution size. |
| Current Source Headroom | 300 mV - ensures regulation stability even at low VIN–VLED differentials, critical for battery-voltage droop during flash. |
| I²C Interface Speed | 400 kHz - compatible with standard microcontroller I²C peripherals without clock stretching. |
| Thermal Shutdown | 150°C (typical) - protects device under sustained high-current or high-ambient conditions. |
| Operating Ambient Temp | −40°C to +85°C - qualified for consumer mobile device environmental requirements. |
Pinout & Package
LM3560TLE-20/NOPB is housed in a 1.96 mm × 1.96 mm, 16-pin DSBGA (YZR) package optimized for minimal PCB footprint and thermal performance (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 peak switching current and must be routed with low inductance. |
| A4/B4 GND | Power ground | Primary return path for boost converter and current sources; requires solid thermal pad connection. |
| B1 LED2 | High-side current source output | Drives cathode-grounded flash LED2; independent current programming from LED1. |
| 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/flash sync input (active-high or active-low), interrupt output, or GPIO - internal 300-kΩ pulldown. |
| C3 STROBE | Hardware flash trigger | Active-high logic input to initiate flash pulse; internal 300-kΩ pulldown ensures safe default state. |
| C4 IN | Main power input | 2.5–5.5 V supply input; requires ≥10-µF ceramic bypass capacitor to GND near pin. |
| D1 TX2/INT/GPIO2 | Multi-function I/O | Dual-polarity RF sync input, interrupt output, or GPIO - identical functionality and biasing to TX1. |
| 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; pulling low forces immediate shutdown independent of I²C state. |
Key Features
| Feature | Design Value |
|---|---|
| Dual high-side current sources | Enables grounded-cathode LED layout, simplifying PCB routing and improving EMI performance in camera modules. |
| Programmable current range (31.25 mA–2 A) | Supports both low-power message indication and full-intensity flash modes using same hardware configuration. |
| Integrated 4-bit VLED ADC | Monitors LED forward voltage in real time to detect open/short faults and validate LED health without external components. |
| NTC-based thermal sensing | Automatically scales back LED current when junction temperature approaches 135°C, preventing LED degradation or failure. |
| Four hardware control inputs (STROBE, TX1, TX2, HWEN) | Allows system-level timing coordination with RF power amplifiers and fail-safe shutdown during software lockup. |
Applications
| Smartphone Camera Flash | Mobile Device Privacy Indicator |
|---|---|
Use Scenario: High-intensity illumination for low-light photography in compact smartphones with dual-camera modules. IC Role / Device Role / Timing Role: Synchronous boost flash driver providing precise 2-A flash current with hardware-triggered STROBE timing and RF-synced TX1/TX2 pulse suppression. Use Value: Enables consistent flash brightness across battery voltage range (3.0–4.2 V) while minimizing solution size (<26 mm²) and avoiding thermal throttling via NTC feedback. | Use Scenario: Visual notification for microphone/camera activation in privacy-sensitive applications (e.g., video conferencing, voice assistants). IC Role / Device Role / Timing Role: Dual-mode LED controller operating in "Privacy Indicate" mode, driving indicator LEDs with programmable current (31.25–187.5 mA) and configurable blink patterns via I²C. Use Value: Eliminates need for separate indicator driver IC by reusing flash LEDs and current sources, reducing BOM count and PCB area. |
| White LED Biasing for Imaging Sensors | Low-Power Message Indicator |
Use Scenario: Constant-current biasing of white LEDs used as structured light sources in depth-sensing cameras (e.g., Face ID, AR tracking). IC Role / Device Role / Timing Role: Precision current source delivering stable 1-A LED current with <±5% accuracy over −40°C to +85°C ambient, regulated by internal error amplifier and 300-mV headroom. Use Value: Maintains optical output consistency despite temperature drift and input voltage variation, critical for calibrated imaging systems. | Use Scenario: Status indication for Bluetooth pairing, charging, or system boot on wearables and IoT edge devices. IC Role / Device Role / Timing Role: Low-quiescent-current (590 µA) indicator driver using LEDI/NTC pin in current-source mode, programmable from 1.25 mA to 18 mA. Use Value: Extends battery life in always-on indicator applications while supporting dynamic brightness adjustment via I²C register writes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3554TLE/NOPB | Single 1.5-A high-side current source; no dual-LED independent control; lacks NTC comparator; 1.5-MHz switching frequency. | Suitable only for single-LED flash systems; cannot support privacy-indicator mode using dual LEDs. | Select when board space or cost constraints eliminate need for dual-channel flexibility and thermal monitoring. |
| MAX77691EWL+T | 3-A single-channel flash driver with integrated 4.5-V LDO; no hardware TX sync inputs; uses SPI interface instead of I²C. | Requires external level-shifting for 1.8-V host I/O; lacks dedicated torch/flash mode separation and RF sync capability. | Prefer when higher peak current (3 A) is required and system already uses SPI peripherals, accepting trade-offs in timing control granularity. |
Compared with LM3560TLE-20/NOPB, LM3554TLE/NOPB offers lower integration and reduced thermal management, while MAX77691EWL+T trades I²C simplicity and hardware sync for higher current and integrated power rail generation - making LM3560TLE-20/NOPB optimal for dual-LED, RF-coordinated, thermally robust mobile flash systems.
Availability
LM3560TLE-20/NOPB is available at Aetrix Electronics and suitable for smartphone camera modules, mobile privacy indicators, structured-light imaging systems, and low-power status indication requiring stable component supply and long-term production continuity.
Supply support for LM3560TLE-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 company specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and interface solutions for industrial, automotive, and consumer markets.
The LM3560 product line was designed specifically for high-efficiency, space-constrained LED flash applications in mobile imaging systems, integrating boost conversion, dual current regulation, thermal protection, and hardware synchronization in a single DSBGA package.
FAQ
What is the maximum total flash current supported by the LM3560TLE-20/NOPB?
The LM3560TLE-20/NOPB supports up to 2 A total flash current when both LED1 and LED2 current sources are configured in parallel to drive a single LED. Each channel delivers up to 1 A, and the device maintains ≤±3.5% current accuracy at 2 A under nominal conditions (VIN = 3.6 V, TA = 25°C). The LM3560TLE-20/NOPB achieves this using synchronous rectification and adaptive regulation to sustain ≥300 mV headroom across the current sources.
How does the LM3560TLE-20/NOPB handle thermal management during extended flash operation?
The LM3560TLE-20/NOPB incorporates an integrated comparator that monitors an external NTC thermistor connected to the LEDI/NTC pin. When temperature exceeds the programmed threshold, the device automatically scales back LED current to prevent overheating. Thermal shutdown engages at TJ = 150°C (typical) and releases at 135°C (typical). This behavior is documented in the LM3560TLE-20/NOPB datasheet Section 7.3.4 and validated across −40°C to +85°C ambient.
Can the LM3560TLE-20/NOPB operate without I²C communication after initial configuration?
Yes, the LM3560TLE-20/NOPB supports fully autonomous operation after I²C initialization. Once flash/torch current levels, timeout duration, and mode registers are written, hardware pins (STROBE, TX1, TX2, HWEN) control all real-time functions. The LM3560TLE-20/NOPB retains register settings during shutdown and resumes operation with prior configuration upon HWEN assertion, eliminating dependency on continuous host MCU interaction during flash sequences.
What package type and dimensions does the LM3560TLE-20/NOPB use?
The LM3560TLE-20/NOPB uses a 16-pin DSBGA (YZR) package with nominal body size 1.96 mm × 1.96 mm and 0.5-mm pitch. It features a bottom-side thermal pad for enhanced heat dissipation and is specified with RθJA = 71.4°C/W. This ultra-compact footprint supports <26 mm² total solution size, as confirmed in the LM3560TLE-20/NOPB Typical Application schematic (Figure 2, SNOSB43C).
Does the LM3560TLE-20/NOPB support independent brightness control for two separate LEDs?
Yes, the LM3560TLE-20/NOPB provides independent LED current control via separate torch brightness (Address 0xA0) and flash brightness (Address 0xB0) registers. Bits [4:3] of the Enable Register allow individual turn-on/turn-off of LED1 and LED2, and each brightness register contains dedicated fields for LED1 and LED2 current scaling. This enables asymmetric configurations - for example, 1 A on LED1 and 500 mA on LED2 - as verified in LM3560TLE-20/NOPB Register Descriptions (Section 7.6).
LM3560TLE-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)
LM3560TLE-20/NOPB FAQ
1.How can I place an order for LM3560TLE-20/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3560TLE-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 LM3560TLE-20/NOPB reliable?
The price and inventory of LM3560TLE-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 LM3560TLE-20/NOPB is usually 5 days.
3.What payment methods are accepted for LM3560TLE-20/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3560TLE-20/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3560TLE-20/NOPB?
LM3560TLE-20/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3560TLE-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 LM3560TLE-20/NOPB?
For technical support, including LM3560TLE-20/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3560TLE-20/NOPB requirements.
6.How does Aetrix verify that LM3560TLE-20/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3560TLE-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 LM3560TLE-20/NOPB meets industry standards.
7.What is the process for return or replacement of LM3560TLE-20/NOPB?
All LM3560TLE-20/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3560TLE-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 LM3560TLE-20/NOPB part is unused and in its original packaging.
Return procedure for LM3560TLE-20/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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