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Texas Instruments LM3565TLX/NOPB
- Part No.:
- LM3565TLX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-WFBGA, DSBGA
- Datasheet:
-
LM3565TLX/NOPB.pdf
- Description:
- IC LED DRVR RGLTR PWM 9 16DSBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3565TLX/NOPB from Texas Instruments is a 4 MHz synchronous boost LED flash driver IC designed to deliver up to 930 mA into two series-connected white LEDs, featuring integrated 8-bit ADC for input/LED voltage monitoring, hardware torch/strobe control, and I²C-compatible interface. It operates across 2.5–5.5 V input, supports adaptive flash scaling, and targets camera phone flash applications requiring high-current, low-profile power management.
For engineers reviewing the LM3565TLX/NOPB datasheet, LM3565TLX/NOPB pinout, LM3565TLX/NOPB application, or LM3565TLX/NOPB equivalent, key selection considerations include its dual-mode (flash/assist) current source architecture, DSBGA-16 package constraints, 4 MHz fixed-frequency boost topology, thermal fault reporting, and hardware-triggered timing control via STROBE/TORCH pins.
Technical Context
The LM3565TLX/NOPB integrates a current-mode PWM synchronous boost converter with dual inductor switch drivers (SW1/SW2), a high-side LED current source capable of 480–930 mA flash or 60/90 mA assist modes, and dedicated hardware control paths for STROBE (edge- or level-sensitive flash trigger) and TORCH (standby/shutdown-enabled assist enable). Its internal 8-bit ADC samples VIN and VLED during events, while TX-MASK provides RF PA-coordinated current reduction.
Protection logic includes over-voltage (9.0–10.0 V trip), output short-circuit detection, thermal shutdown (TJ = 150°C), UVLO (2.3–2.5 V falling), and flash timeout - all reported via fault register 0x08/0x09. The device uses four selectable peak inductor current limits (2.3–3.3 A) to optimize efficiency across input voltage and load conditions.
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 regulation. |
| Max Flash LED Current | 930 mA - programmable in 30 mA steps (480–930 mA); enables high-brightness still-image capture. |
| Assist/Torch Current | 60 mA or 90 mA - continuous mode for video assist lighting; default 60 mA per register 0x02 AS0=0. |
| Switching Frequency | 4.0 MHz ±5% - enables use of ultra-small 1 µH inductors and compact ceramic output capacitors. |
| I²C Interface Speed | 400 kHz - standard-mode compatibility with host processors; slave address 0x30 (7-bit). |
| ADC Resolution | 8-bit - measures VIN and VLED with ~31.4–50 mV step size; used for adaptive flash scaling and diagnostics. |
| Package | 16-bump DSBGA (1.99 mm × 1.99 mm × 0.6 mm) - ultra-low profile for space-constrained mobile camera modules. |
Pinout & Package
LM3565TLX/NOPB uses a 16-bump, 1.990 mm × 1.990 mm × 0.6 mm DSBGA package (YZR0016AAA) with bumps arranged in a 4×4 array. Power and ground connections are distributed across multiple pins to minimize impedance and thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2 | PGND | Power ground - low-impedance return path for boost inductor and LED current; must be connected to main PCB ground plane. |
| A3 | VIN | Main input supply - accepts 2.5–5.5 V; requires 10 µF bypass capacitor placed adjacent to pin. |
| A4 | ENABLE | Chip enable - active-low shutdown; high = standby (I²C/TORCH/STROBE functional); must be held low before power-up. |
| B1, B2 | SW1, SW2 | Boost switch outputs - drive external 1 µH inductors; require low-ESR ceramic output caps (COUT1/COUT2 = 10 µF each). |
| B3 | TORCH | Hardware torch enable - triggers 60/90 mA assist mode in standby or wakes device from shutdown. |
| B4 | TX-MASK | RF transmit mask - reduces flash current when asserted high; prevents battery overcurrent during cellular transmission. |
| C1, C2 | VOUT1, VOUT2 | Boost converter outputs - tied together externally; generate regulated 5.5–8.5 V for LED string bias. |
| C3 | STROBE | Hardware flash trigger - edge- or level-sensitive; synchronizes flash pulse with image capture; supports PWM dimming. |
| C4 | SDA | I²C data line - bidirectional, open-drain; requires external pull-up to VIO (1.8 V typical); acknowledges writes at 9th clock. |
| D1, D2 | LEDOUT1, LEDOUT2 | High-side LED current outputs - drive two series WLEDs; tied together; terminate to GND plane (no return trace needed). |
| D3 | AGND | Analog ground - isolated reference for ADC and internal comparators; must be connected to clean ground near AGND pin. |
| D4 | SCL | I²C clock input - 400 kHz max; requires external pull-up; controls timing of register reads/writes and command execution. |
Key Features
| Feature | Design Value |
|---|---|
| High-efficiency synchronous boost | Up to 90% efficiency at 930 mA flash; 4 MHz switching minimizes inductor size and EMI footprint. |
| Dual-mode LED current source | Separate programmable flash (480–930 mA) and assist (60/90 mA) modes with independent ramp control (20 µs rise/fall). |
| Hardware-triggered timing control | STROBE and TORCH pins enable deterministic, low-latency flash/assist activation without I²C overhead or CPU intervention. |
| Integrated 8-bit ADC | Measures VIN and VLED during operation - enables real-time adaptive flash scaling and system-level battery/LED health monitoring. |
| Comprehensive fault protection | Detects and reports OVP (9.5 V typ), VOUT/VLED short, thermal shutdown (150°C), UVLO, flash timeout, and TX-MASK events. |
Applications
| Smartphone Camera Flash | Tablet Imaging Module |
|---|---|
|
Use Scenario: High-intensity still-image capture in low-light environments using dual-series white LEDs. IC Role / Device Role / Timing Role: Primary flash driver delivering 930 mA with <20 µs current ramp control; synchronized to image sensor via STROBE pin. Use Value: Enables consistent, repeatable flash brightness across battery voltage range (2.5–5.5 V) using adaptive scaling and 4 MHz boost efficiency. |
Use Scenario: Video assist lighting during front/rear camera recording on mid-size tablets. IC Role / Device Role / Timing Role: Torch-mode LED driver providing stable 60 mA or 90 mA continuous current; enabled by TORCH pin or I²C command. Use Value: Eliminates need for separate assist LED driver; leverages same boost stage and current source for reduced BOM count and board area. |
| Mobile Barcode Scanner | Compact Action Camera |
|
Use Scenario: Short-duration, high-current illumination for rapid barcode reading under variable ambient light. IC Role / Device Role / Timing Role: Flash controller with hardware-triggered STROBE input and TX-MASK coordination to avoid RF interference during cellular scan. Use Value: Prevents battery overcurrent faults during simultaneous transmit + flash via programmable current reduction (TX-MASK register 0x03). |
Use Scenario: Low-profile, ruggedized imaging system requiring reliable flash performance in wide temperature range (–30°C to +85°C). IC Role / Device Role / Timing Role: Integrated flash/assist driver with thermal shutdown (150°C) and UVLO (2.4 V typ) for robust field operation. Use Value: Maintains flash functionality across extreme operating conditions using validated junction temp range and fault-reporting registers (0x08/0x09). |
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 | Same 4 MHz boost architecture but supports higher 1.5 A flash current; includes integrated charge pump for higher VOUT capability (up to 12 V). | Targeted at triple-LED or higher-Vf LED strings where LM3565TLX/NOPB's 8.5 V max VOUT is insufficient. | Select LM3554TLX/NOPB when >930 mA or >8.5 V LED bias is required; otherwise LM3565TLX/NOPB offers lower cost and smaller footprint. |
| RT8542GQW | 3 MHz boost driver with 1.2 A max flash current; lacks integrated ADC and TX-MASK pin; uses different I²C register map and fault reporting scheme. | Used in cost-sensitive designs where VIN monitoring and RF coordination are not required; no hardware torch/strobe priority handling. | Choose RT8542GQW only if ADC, TX-MASK, and deterministic hardware triggering are unnecessary; verify register compatibility and layout changes. |
Compared with LM3554TLX/NOPB and RT8542GQW, the LM3565TLX/NOPB uniquely balances compact DSBGA-16 packaging, integrated VIN/VLED sensing, and dedicated hardware control (TORCH/STROBE/TX-MASK) for smartphone-grade flash responsiveness and system-level coordination - without requiring higher VOUT or sacrificing diagnostic capability.
Availability
LM3565TLX/NOPB is available at Aetrix Electronics and suitable for smartphone camera modules, tablet imaging subsystems, and portable barcode scanners requiring stable component supply, full production traceability, and long-term lifecycle support.
Supply support for LM3565TLX/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, embedded processing, and power management technologies, with decades of experience in mobile power solutions.
The LM3565TLX/NOPB belongs to TI's LED flash driver product line, engineered specifically for space-constrained, battery-powered imaging systems demanding high-current precision, hardware-synchronized timing, and intelligent fault-aware operation.
FAQ
What is the maximum LED current supported by the LM3565TLX/NOPB?
The LM3565TLX/NOPB supports a maximum flash LED current of 930 mA in 30 mA programmable steps (480–930 mA), with two assist levels at 60 mA or 90 mA. This is achieved through its high-side current source architecture and verified across the full –30°C to +85°C ambient temperature range per the SNVS957 datasheet.
Does the LM3565TLX/NOPB require external components for basic operation?
Yes - the LM3565TLX/NOPB requires two 1 µH inductors (SW1/SW2), two 10 µF output capacitors (COUT1/COUT2), one 10 µF input capacitor (CIN1), one 100 nF input capacitor (CIN2), and external pull-up resistors on SDA/SCL. These are specified in the Typical Application Circuit and validated in TI's SNVS957 design guidelines.
How does the TX-MASK pin function in the LM3565TLX/NOPB?
The TX-MASK pin on the LM3565TLX/NOPB allows an RF power amplifier to directly reduce flash current during cellular transmission, preventing battery overcurrent. When asserted high, it lowers the target flash current by a value stored in register 0x03; the transition back to full current is ramped, but the reduction occurs instantly.
Can the LM3565TLX/NOPB operate without I²C communication?
Yes - the LM3565TLX/NOPB supports fully hardware-controlled operation via TORCH and STROBE pins. In standby mode, TORCH enables assist lighting; STROBE triggers flash events. I²C is optional for configuration, diagnostics (ADC, fault registers), and fine-grained current/timing control.
What package type is used for the LM3565TLX/NOPB?
The LM3565TLX/NOPB uses a 16-bump, 1.990 mm × 1.990 mm × 0.6 mm DSBGA package (TI part number YZR0016AAA). This wafer-level chip-scale package enables ultra-thin integration in camera module flex assemblies and meets IPC/JEDEC J-STD-020 moisture sensitivity level 1 requirements.
LM3565TLX/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:
- 1
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 5.5V ~ 8.5V
- Current - Output / Channel:
- 930mA (Flash)
- Frequency:
- 4MHz
- Dimming:
- PWM
- Applications:
- Camera Flash
- Operating Temperature:
- -30°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DSBGA (2.5x2.12)
LM3565TLX/NOPB FAQ
1.How can I place an order for LM3565TLX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3565TLX/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 LM3565TLX/NOPB reliable?
The price and inventory of LM3565TLX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3565TLX/NOPB is usually 5 days.
3.What payment methods are accepted for LM3565TLX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3565TLX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3565TLX/NOPB?
LM3565TLX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3565TLX/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 LM3565TLX/NOPB?
For technical support, including LM3565TLX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3565TLX/NOPB requirements.
6.How does Aetrix verify that LM3565TLX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3565TLX/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 LM3565TLX/NOPB meets industry standards.
7.What is the process for return or replacement of LM3565TLX/NOPB?
All LM3565TLX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3565TLX/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 LM3565TLX/NOPB part is unused and in its original packaging.
Return procedure for LM3565TLX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM3565TLX/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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