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Texas Instruments LM536015QDSXRQ1
- Part No.:
- LM536015QDSXRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM536015QDSXRQ1.pdf
- Description:
- IC REG BUCK 5V 1A 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:9,406
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Product details
Overview
LM536015QDSXRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering a fixed 5-V output at up to 1000 mA, operating from 3.55 V to 36 V input with transient tolerance to 42 V, 2.1-MHz fixed switching frequency, and 23-µA quiescent current - deployed in automotive camera power rails.
For engineers reviewing the LM536015QDSXRQ1 datasheet, LM536015QDSXRQ1 pinout, LM536015QDSXRQ1 application, or LM536015QDSXRQ1 equivalent, key selection criteria include its 5-V fixed output, 1-A load capability, wettable-flank WSON-10 package, spread-spectrum option disable status, and RESET output with filtered delay release for system supervision.
Technical Context
The LM536015QDSXRQ1 implements peak current mode control with internal compensation, enabling stable regulation across wide VIN (3.55–36 V) and temperature (–40°C to 150°C junction) ranges while maintaining 2.1-MHz switching. Its architecture supports seamless PWM/PFM transitions and achieves 5-V output regulation down to VIN = 5.5 V.
It integrates a 3-V internal LDO (VCC), open-drain RESET with 4–8 ms activation delay and 24-µs glitch filtering, and a multifunction SYNC/MODE pin supporting forced PWM, AUTO mode with diode emulation, and external clock synchronization - all within a thermally enhanced 3-mm × 3-mm WSON package with exposed thermal pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±1.5% over full temperature and load range - ensures stable MCU/Sensor rail without external feedback divider. |
| Max Output Current | 1000 mA continuous - supports high-current automotive imaging sensors and SoCs without derating at 125°C ambient. |
| Input Voltage Range | 3.55 V to 36 V, with 42-V/100-ms transient tolerance - eliminates need for upstream TVS or active surge clamping in 12-V/24-V systems. |
| Switching Frequency | 2.1 MHz ±10% - enables use of compact 1–2.2-µH inductors and avoids AM-band EMI interference. |
| Quiescent Current | 23 µA typical at no load - sustains low-power sleep modes in always-on ADAS modules without battery drain. |
| Shutdown Current | 1.8 µA at EN = low - meets automotive OEM requirements for <2-µA off-state leakage in parked-mode systems. |
| RESET Output | Open-drain with 4–8 ms delay, 92–97% UVLO and 105–110% OV thresholds - replaces discrete supervisor IC in camera ECU designs. |
Pinout & Package
LM536015QDSXRQ1 uses a 10-pin WSON (DSX) package, 3.00 mm × 3.00 mm body size, with wettable flanks and exposed thermal pad (DAP) requiring direct connection to PCB ground plane for thermal performance (RθJA = 46.2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Connects to inductor; carries high di/dt switching current - requires short, low-inductance layout to minimize EMI. |
| 2 BOOT | High-side gate driver supply | Requires 100-nF ceramic capacitor between BOOT and SW to sustain gate drive during high-side conduction. |
| 3 VCC | Internal 3-V regulator output | Powers internal control circuitry; requires 1.0-µF bypass capacitor to AGND (fixed-output variant). |
| 4 FB | Feedback input (5-V fixed) | Internally connected to 5-V output; no external divider needed - simplifies BOM and layout for fixed-voltage use. |
| 5 AGND | Analog ground reference | Ground reference for FB, EN, and internal error amplifier - must be star-connected to minimize noise coupling. |
| 6 RESET | Open-drain reset indicator | Asserts low on fault or EN deactivation; requires external pull-up resistor to system rail for logic-level signaling. |
| 7 EN | Enable control input | Active-high; 1.7–2.0 V threshold with 0.4–0.55 V hysteresis - supports direct connection to microcontroller GPIO or ignition-sense circuit. |
| 8 VIN | Main input supply | Accepts 3.55–36 V; requires local 10-µF ceramic + bulk capacitance near pin to suppress transients and ripple. |
| 9 SYNC/MODE | Mode selection & sync input | Tied low for AUTO mode (PFM at light load); tied high for forced PWM; accepts 1.9–2.3 MHz external clock for synchronization. |
| 10 GND | Power ground | Primary return path for VIN, SW, and internal power stages - must be low-impedance and thermally coupled to DAP. |
| DAP | Exposed thermal pad | Electrically isolated ground connection; soldered to PCB ground plane to achieve RθJC(bot) = 4.1°C/W thermal resistance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to 125°C ambient operation with HBM ±2000 V and CDM ±750 V ESD robustness - meets automotive electronics reliability standards. |
| Integrated RESET with delay & filtering | Eliminates need for external supervisory IC by providing glitch-immune, temperature-compensated power-good signal with programmable release timing. |
| Pin-selectable PWM/PFM operation | SYNC/MODE pin configures forced PWM (low noise, constant frequency) or AUTO mode (high efficiency at light loads) - no firmware or external logic required. |
| Internal compensation & soft-start | Reduces external component count to only input/output capacitors, inductor, BOOT cap, and optional RESET pull-up - accelerates design validation and layout. |
| Wettable flank WSON package | Enables automated optical inspection (AOI) of solder joints on bottom terminations - improves manufacturing yield and field reliability in automotive production. |
Applications
| Automotive Camera Power Supply | ADAS Domain Controller Core Rail |
|---|---|
|
Use Scenario: Powers image sensor, ISP, and interface circuitry in forward-facing monocular camera modules. IC Role / Device Role / Timing Role: Primary 5-V buck regulator supplying stable, low-noise power with fast transient response to handle burst-mode sensor readout. Use Value: 23-µA quiescent current extends parking-mode battery life; 42-V transient tolerance withstands load-dump events without shutdown. |
Use Scenario: Generates 5-V core supply for radar/ADAS domain controller SoCs during cold-crank and stop-start cycles. IC Role / Device Role / Timing Role: High-reliability point-of-load regulator with RESET output used as SoC reset source and fault indicator. Use Value: 1-A output supports multi-rail PMIC input; –40°C to 150°C junction rating ensures operation under hood-mounted thermal stress. |
| Automotive Body Control Module (BCM) | Infotainment Display Backlight Driver Support |
|
Use Scenario: Supplies 5-V logic rail for door module microcontrollers and LIN transceivers in harsh body electronics environments. IC Role / Device Role / Timing Role: Input-tolerant buck converter interfacing directly with vehicle battery; RESET output monitors system health for diagnostic reporting. Use Value: 3.55-V minimum start-up voltage enables operation during cranking; wettable flanks ensure solder joint integrity in high-vibration mounting locations. |
Use Scenario: Provides regulated 5-V bias for LED backlight driver ICs in digital instrument clusters and center displays. IC Role / Device Role / Timing Role: Secondary power stage decoupling display subsystem from main 12-V bus; soft-start prevents inrush-induced brownouts. Use Value: 2.1-MHz switching minimizes EMI coupling into sensitive analog video signals; internal compensation reduces layout sensitivity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM536005QDSXRQ1 | Same 5-V fixed output, but rated for 650 mA max load and uses identical WSON-10 package. | Suitable for lower-current camera modules or auxiliary sensors where 1-A headroom is unnecessary. | Select when load current ≤650 mA and cost optimization is prioritized over future-proofing headroom. |
| TPS543B20RTWR | 3.5–18-V input, 5-V/3-A output, 2.2-MHz sync-capable, but lacks AEC-Q100 Grade 1 qualification and integrated RESET. | Applicable in non-safety-critical infotainment or telematics power rails where automotive qualification is not mandated. | Choose only for non-automotive or non-safety-critical designs requiring higher current and external supervision. |
Compared with LM536005QDSXRQ1, LM536015QDSXRQ1 delivers 54% higher output current in identical footprint; versus TPS543B20RTWR, it provides certified automotive reliability and integrated supervision at the cost of narrower input range and lower max current.
Availability
LM536015QDSXRQ1 is available at Aetrix Electronics and suitable for automotive camera power supplies, ADAS domain controllers, and body control modules requiring stable component supply with AEC-Q100 compliance and long-term production support.
Supply support for LM536015QDSXRQ1 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 automotive-grade power management solutions with decades of automotive qualification expertise.
LM536015QDSXRQ1 belongs to TI's LM536xx-Q1 family of automotive synchronous buck converters, designed specifically to replace discrete DC/DC + supervisor combinations in space-constrained, thermally demanding vehicle subsystems.
FAQ
What is the maximum output current supported by the LM536015QDSXRQ1?
The LM536015QDSXRQ1 supports a maximum continuous output current of 1000 mA at ambient temperatures up to 125°C, with thermal derating above that point. This rating is validated across the full AEC-Q100 Grade 1 temperature range (–40°C to 125°C ambient) and aligns with the LM53601-Q1 device specification. The LM536015QDSXRQ1 maintains regulation and stability under full load with proper PCB thermal design using the exposed DAP pad.
Does the LM536015QDSXRQ1 require external compensation components?
No, the LM536015QDSXRQ1 features fully internal compensation, eliminating the need for external RC networks or type-II/type-III compensators. This simplifies design, reduces BOM count, and improves layout robustness - especially critical in automotive applications where board space and reliability are constrained. All loop stability is ensured across input voltage, load, and temperature ranges per the datasheet.
How does the RESET output function on the LM536015QDSXRQ1?
The LM536015QDSXRQ1 provides an open-drain RESET output with built-in 24-µs glitch filtering and 4–8 ms delay before assertion. It asserts low when output voltage falls below 92–97% of nominal (UVLO) or rises above 105–110% (OVLO), and also pulls low when EN is de-asserted. This integrated function replaces external reset supervisors in automotive camera and ADAS modules, reducing component count and board area.
Is spread spectrum enabled on the LM536015QDSXRQ1 by default?
No, the LM536015QDSXRQ1 is the "no spread spectrum" variant (as indicated by '5' in position 7 of the part number and confirmed in the Device Comparison table). Spread spectrum is disabled unless a specific spread-spectrum-enabled variant like LM53601LQDSXRQ1 is selected. This configuration ensures deterministic 2.1-MHz switching for EMI-sensitive applications where frequency jitter is undesirable.
What package type and thermal characteristics apply to the LM536015QDSXRQ1?
The LM536015QDSXRQ1 uses a 10-pin WSON (DSX) package measuring 3.00 mm × 3.00 mm with wettable flanks and an exposed thermal pad (DAP). Its thermal metrics include RθJA = 46.2°C/W and RθJC(bot) = 4.1°C/W when the DAP is soldered to a 1-in² copper pad on the PCB. This construction enables reliable operation up to 150°C junction temperature in automotive under-hood environments.
LM536015QDSXRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.8V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WSON (3x3)
LM536015QDSXRQ1 FAQ
1.How can I place an order for LM536015QDSXRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM536015QDSXRQ1 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 LM536015QDSXRQ1 reliable?
The price and inventory of LM536015QDSXRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM536015QDSXRQ1 is usually 5 days.
3.What payment methods are accepted for LM536015QDSXRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM536015QDSXRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM536015QDSXRQ1?
LM536015QDSXRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM536015QDSXRQ1 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 LM536015QDSXRQ1?
For technical support, including LM536015QDSXRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM536015QDSXRQ1 requirements.
6.How does Aetrix verify that LM536015QDSXRQ1 is sourced from the original manufacturer or authorized distributors?
All LM536015QDSXRQ1 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 LM536015QDSXRQ1 meets industry standards.
7.What is the process for return or replacement of LM536015QDSXRQ1?
All LM536015QDSXRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM536015QDSXRQ1, 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 LM536015QDSXRQ1 part is unused and in its original packaging.
Return procedure for LM536015QDSXRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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