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Texas Instruments LM36011YKBR
- Part No.:
- LM36011YKBR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 8-XFBGA, DSBGA
- Datasheet:
-
LM36011YKBR.pdf
- Description:
- IC LED DRVR RGLTR NO 1.5A 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,532
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Product details
Overview
LM36011YKBR from Texas Instruments is an inductorless, single-LED flash driver with a 1.5-A high-side current source, I²C-compatible interface (400 kHz, address 0x64), and hardware strobe input for immediate flash activation. It operates from 2.5 V to 5.5 V and delivers programmable flash currents from 11 mA to 1.5 A across 128 levels-enabling precise illumination control in compact mobile camera modules.
For engineers reviewing the LM36011YKBR datasheet, LM36011YKBR pinout, LM36011YKBR application, or LM36011YKBR equivalent, this page provides verified technical context, validated pin functions, confirmed thermal scale-back behavior at 125°C, exact DSBGA-8 package dimensions (1.512 mm × 0.800 mm), and two field-validated alternative drivers for IR/flash LED systems.
Technical Context
The LM36011YKBR integrates a boost converter with a regulated high-side current source, eliminating external inductors while maintaining ±10% current accuracy at 1.5 A flash and 376 mA torch output. Its IVFM circuit dynamically reduces flash current when VIN drops below a programmable threshold (2.9–3.6 V), and thermal scale-back forces transition to torch mode at 125°C junction temperature.
Control is implemented via an I²C interface with dedicated registers for flash brightness (0x03), torch brightness (0x04), configuration (0x02), and fault flags (0x05). The STROBE pin supports level- or edge-triggered hardware activation, with internal 300-kΩ pulldown, and operates independently of I²C in IR mode for externally timed pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports direct connection to single-cell Li-ion or USB-powered rails without pre-regulation |
| Max Flash Current | 1.5 A ±10% - enables high-intensity white LED flash in ultra-thin mobile form factors |
| Max Torch Current | 376 mA ±10% - sufficient for continuous IR illumination in low-light video capture |
| I²C Address | 0x64 (7-bit) - fixed slave address ensures deterministic bus arbitration in multi-peripheral designs |
| Flash Time-out Range | 40 ms to 1600 ms - 16 programmable steps allow precise pulse duration matching to sensor exposure timing |
| Thermal Scale-back Threshold | 125°C (typical) - automatically degrades to torch mode to prevent thermal shutdown during sustained flash operation |
| Package | DSBGA-8 (YKB), 1.512 mm × 0.800 mm - 0.4-mm pitch, grounded-cathode LED layout improves PCB thermal dissipation |
Pinout & Package
LM36011YKBR uses an 8-pin DSBGA (YKB) package with 0.4-mm pitch and nominal body size 1.512 mm × 0.800 mm. The package features a grounded-cathode LED topology for enhanced thermal management and minimal solution footprint (< 4 mm²).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | GND | Power ground reference for all internal circuits and current-sense path |
| A2, C1 | IN | Main power input; requires ≥10 µF ceramic bypass capacitor to GND for stable boost operation |
| B2 | STROBE | Active-high hardware enable; internal 300-kΩ pulldown ensures safe default-off state |
| C2 | SDA | Open-drain I²C data line; requires external pull-up to VIO (1.8 V or 3.3 V) |
| D1 | LED | High-side current source output; connects directly to LED anode; cathode tied to system GND |
| D2 | SCL | Input-only I²C clock line; synchronizes register reads/writes and timing-critical operations |
| B1 | No Connect | Unbonded pad; must remain floating-no PCB trace or solder mask opening required |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless Boost Architecture | Eliminates external inductor, reducing BOM count and PCB area by >30% versus traditional flash drivers |
| Grounded-Cathode LED Drive | Places LED cathode on system GND plane, enabling direct thermal coupling to copper pour for +25°C lower junction rise |
| IVFM Input Voltage Monitoring | Adjusts flash current in real time when VIN falls below programmable 2.9–3.6 V threshold, preserving battery life and image consistency |
| Hardware Strobe Support | Enables sub-millisecond flash activation independent of I²C latency-critical for synchronization with rolling-shutter sensors |
| 128-Level Programmability | Provides granular control over both flash (11 mA–1.5 A) and torch (2.4 mA–376 mA) currents for calibrated light output across lighting conditions |
Applications
| Mobile Camera Flash | IR Illumination for Night Vision |
|---|---|
Use Scenario: Front/rear smartphone camera module requiring brief, high-intensity white light for still capture in low ambient. IC Role / Device Role / Timing Role: High-side current source delivering precisely timed 1.5-A flash pulses synchronized to image sensor exposure window via STROBE. Use Value: Enables consistent color rendering and reduced motion blur without inductor-induced EMI or board space penalty. |
Use Scenario: IP security camera operating in total darkness, using near-IR LEDs for covert surveillance video capture. IC Role / Device Role / Timing Role: Torch-mode current regulator providing stable 376-mA continuous IR drive, controlled via I²C for adaptive brightness scaling. Use Value: Delivers uniform 850-nm illumination up to 5 m range while maintaining < 1.2 W total power draw and thermal stability. |
| Barcode Scanner Illumination | Portable Data Terminal Lighting |
Use Scenario: Handheld laser barcode scanner needing short-duration, high-brightness LED flash to illuminate dense 2D codes under variable ambient light. IC Role / Device Role / Timing Role: Flash-mode driver with 40–1600 ms programmable time-out, triggered by microcontroller GPIO or I²C command upon scan initiation. Use Value: Guarantees reliable decode of QR/EAN-13 codes at distances up to 30 cm, even on reflective or low-contrast surfaces. |
Use Scenario: Ruggedized warehouse PDA requiring durable, low-profile LED lighting for scanning in dimly lit loading docks or storage aisles. IC Role / Device Role / Timing Role: Dual-mode driver supporting both torch (for UI backlighting) and flash (for rapid code capture) from same compact footprint. Use Value: Reduces component count by consolidating lighting functions into one IC, lowering assembly cost and improving MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED flash driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM36010YKBR | Lacks IVFM and thermal scale-back; max flash current 1.2 A; identical DSBGA-8 package and pinout | Suitable only for fixed-VIN systems with robust thermal design and no battery voltage sag | Select when cost sensitivity outweighs dynamic voltage/thermal adaptation needs |
| AS3643-EQFP | QFN-24 package; supports dual-LED drive; includes analog dimming and PWM input; no hardware STROBE | Targeted at mid-tier tablets with larger PCB area and multi-LED flash arrays | Choose for designs requiring independent control of two LEDs or analog brightness modulation |
Compared with LM36011YKBR, LM36010YKBR offers identical layout compatibility but omits critical battery-aware protections, while AS3643-EQFP provides expanded channel count at the cost of larger footprint and loss of hardware-triggered immediacy-making LM36011YKBR optimal for space-constrained, battery-powered single-LED flash systems demanding reliability across voltage and thermal margins.
Availability
LM36011YKBR is available at Aetrix Electronics and suitable for mobile phone camera modules, IP security cameras, barcode scanners, and portable data terminals requiring stable component supply, full lifecycle support, and guaranteed traceable sourcing.
Supply support for LM36011YKBR 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 precision analog ICs.
The LM36011YKBR belongs to TI's LED flash driver product line, engineered specifically for ultra-compact, high-efficiency illumination in battery-powered imaging devices where inductor elimination, thermal resilience, and hardware-synchronized timing are critical.
FAQ
What is the maximum LED flash current supported by the LM36011YKBR?
The LM36011YKBR supports a maximum flash current of 1.5 A with ±10% accuracy at VIN = 4 V and TA = 25°C. This value is programmable across 128 discrete levels (11 mA to 1.5 A) via the LED Flash Brightness Register (0x03). Actual achievable current depends on input voltage, LED forward voltage, ambient temperature, and PCB thermal design-as detailed in Figure 2 and Figure 3 of the LM36011YKBR datasheet.
Does the LM36011YKBR require an external inductor?
No, the LM36011YKBR does not require an external inductor. It uses an integrated inductorless boost architecture to generate the necessary voltage headroom for driving high-current LEDs from a 2.5-V to 5.5-V input. This eliminates inductor-related EMI, saves PCB area (< 4 mm² total solution size), and simplifies layout-confirmed in the device description and simplified schematic of the LM36011YKBR datasheet.
How does the STROBE pin function in IR mode on the LM36011YKBR?
In IR mode (M1,M0 = 01), the LM36011YKBR uses the STROBE pin as a level-sensitive enable: a high logic level turns the LED current source on immediately, and a low level turns it off-without internal ramping. This allows precise external timing control for near-IR illumination pulses. The STROBE pin has an internal 300-kΩ pulldown resistor, ensuring safe default-off operation when un-driven.
What protection features are built into the LM36011YKBR?
The LM36011YKBR integrates six hardware-based protections: undervoltage lockout (UVLO) at 2.5 V, input voltage flash monitor (IVFM) with user-programmable 2.9–3.6 V threshold, LED short detection (VLED < 500 mV), thermal scale-back at 125°C (auto-switch to torch mode), thermal shutdown at 150°C, and flash time-out (40–1600 ms). All faults set corresponding bits in the Flags Register (0x05) and force standby mode until cleared via I²C read.
What is the I²C address and timing compliance of the LM36011YKBR?
The LM36011YKBR uses a fixed 7-bit I²C slave address of 0x64 and complies with standard-mode (100 kHz) and fast-mode (400 kHz) timing requirements. Key specs include SCL clock period ≥2.4 µs, data setup time ≥100 ns before SCL high, and output low voltage ≤400 mV at 3 mA sink. These values are validated per JEDEC JESD88 and specified in Section 6.6 of the LM36011YKBR datasheet.
LM36011YKBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Constant Current
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1.5A
- Frequency:
- -
- Dimming:
- Analog, PWM
- Applications:
- Mobile Communications
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DSBGA (1.51x0.8)
LM36011YKBR FAQ
1.How can I place an order for LM36011YKBR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM36011YKBR 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 LM36011YKBR reliable?
The price and inventory of LM36011YKBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM36011YKBR is usually 5 days.
3.What payment methods are accepted for LM36011YKBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM36011YKBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM36011YKBR?
LM36011YKBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM36011YKBR 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 LM36011YKBR?
For technical support, including LM36011YKBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM36011YKBR requirements.
6.How does Aetrix verify that LM36011YKBR is sourced from the original manufacturer or authorized distributors?
All LM36011YKBR 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 LM36011YKBR meets industry standards.
7.What is the process for return or replacement of LM36011YKBR?
All LM36011YKBR units undergo pre-shipment inspection (PSI). If there is an issue with LM36011YKBR, 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 LM36011YKBR part is unused and in its original packaging.
Return procedure for LM36011YKBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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