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Texas Instruments LM536015QDSXTQ1
- Part No.:
- LM536015QDSXTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM536015QDSXTQ1.pdf
- Description:
- IC REG BUCK 5V 1A 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,261
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Product details
Overview
LM536015QDSXTQ1 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, fixed 2.1-MHz switching frequency, and 23-µA quiescent current. It integrates internal compensation, soft start, RESET with delay and filtering, and supports forced PWM or AUTO mode via SYNC/MODE pin.
For engineers reviewing the LM536015QDSXTQ1 datasheet, LM536015QDSXTQ1 pinout, LM536015QDSXTQ1 application, or LM536015QDSXTQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and electrical specs (–40°C to 150°C junction), and real-world selection guidance for camera, ADAS, and body electronics designs.
Technical Context
The LM536015QDSXTQ1 implements peak current mode control with integrated high- and low-side MOSFETs (RDS(on) = 220 mΩ / 200 mΩ), enabling stable regulation from 3.8 V input to 5-V output at 2.1 MHz. Its architecture supports seamless PWM/PSM transitions and diode emulation in AUTO mode for light-load efficiency.
It features a dedicated open-drain RESET output with 105% overvoltage and 94% undervoltage thresholds relative to 5-V output, 4–8-ms assertion delay, and 24-µs glitch filtering-eliminating need for external supervisory ICs. The SYNC/MODE pin enables external clock synchronization (1.9–2.3 MHz), forced PWM, or AUTO mode selection without layout changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±1.5% over full load and temperature (–40°C to 150°C junction) |
| Max Output Current | 1000 mA continuous - supports automotive ADAS sensors and camera modules requiring robust 5-V rail |
| Input Voltage Range | 3.55 V to 36 V (transient tolerant to 42 V for ≤100 ms) - simplifies front-end surge protection in 12-V/24-V systems |
| Switching Frequency | 2.1 MHz fixed (±10%) - enables use of compact 1–2.2-µH inductors and avoids AM band interference |
| Quiescent Current | 23 µA typical - sustains battery-powered always-on functions (e.g., parking cameras) for >1 year without drain |
| Shutdown Current | 1.8 µA - meets automotive "off-mode" leakage requirements without external load switch |
| Junction Temperature | –40°C to 150°C - qualified per AEC-Q100 Grade 1 for under-hood and camera housing environments |
Pinout & Package
LM536015QDSXTQ1 uses a 10-pin WSON (DSX) package, 3.0 mm × 3.0 mm, with wettable flanks and exposed thermal pad (DAP) requiring direct connection to PCB ground plane for thermal management (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 trace |
| 2 BOOT | High-side gate driver supply | 100-nF capacitor between BOOT and SW provides charge for HS FET drive - critical for startup reliability |
| 3 VCC | Internal 3-V regulator output | Supplies internal logic; bypass with 1.0-µF capacitor to AGND - stabilizes control circuitry during transients |
| 4 FB | Feedback input (fixed 5-V version) | Direct connection to 5-V output; sets regulation point - no external divider needed |
| 5 AGND | Analog ground reference | Ground reference for FB and internal error amplifier - must be star-connected near VCC capacitor |
| 6 RESET | Open-drain reset output | Asserts low on fault or EN=low; requires external pull-up - replaces discrete supervisor IC |
| 7 EN | Enable input | Active-high; 1.7–2.0 V threshold with 0.45 V hysteresis - supports direct connection to MCU GPIO or ignition signal |
| 8 VIN | Main input supply | Accepts 3.55–36 V; bypass directly to GND with ≥10-µF ceramic capacitor - essential for EMI suppression |
| 9 SYNC/MODE | Mode control & sync input | Configures AUTO/PWM mode or accepts external 1.9–2.3 MHz clock - enables system-level timing coordination |
| 10 GND | Power ground | Primary return path for VIN, SW, and internal circuits - must be solidly connected to DAP and AGND |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | Eliminates external power switches; RDS(on) values optimized for 5-V/1-A operation with <1.5-W conduction loss at full load |
| Internal compensation & soft start | Reduces BOM count by 3–4 components; 1.3–4.5 ms soft-start time prevents inrush current in multi-rail systems |
| RESET with built-in delay & filtering | 4–8 ms assertion delay and 24-µs glitch filter ensure clean system reset - no external RC network required |
| Pin-selectable AUTO or forced PWM mode | SYNC/MODE pin toggles between high-efficiency PFM at light load and constant-frequency PWM - selectable without firmware change |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient (–40°C to +150°C junction); HBM ±2000 V, CDM ±750 V - meets automotive ESD robustness standards |
Applications
| Automotive Camera Power Supply | ADAS Sensor Core Rail |
|---|---|
Use Scenario: Powers image sensor, ISP, and interface circuitry in rear-view or surround-view cameras mounted externally or in mirror housings. IC Role / Device Role / Timing Role: Primary 5-V buck regulator supplying stable, low-noise power with fast transient response to handle burst-mode imaging. Use Value: 23-µA quiescent current extends battery life during vehicle sleep; 42-V transient tolerance withstands load-dump events without shutdown. |
Use Scenario: Delivers regulated 5-V power to radar MMICs, ultrasonic transceivers, or vision processors in forward-collision warning systems. IC Role / Device Role / Timing Role: High-reliability DC/DC converter with RESET output used as system health monitor and wake-up trigger. Use Value: Integrated RESET with 94–105% voltage thresholds replaces discrete supervisor, saving 25 mm² board area and reducing component count. |
| Automotive Body Control Module (BCM) | Infotainment Display Backlight Support |
Use Scenario: Supplies auxiliary 5-V rail for door module microcontrollers, LIN transceivers, and LED drivers in harsh under-dash environments. IC Role / Device Role / Timing Role: Automotive-grade buck converter operating across –40°C to +125°C ambient with internal thermal shutdown (151–185°C). Use Value: Wettable flank WSON package enables automated optical inspection (AOI); 150°C junction rating ensures long-term reliability in sealed enclosures. |
Use Scenario: Provides stable 5-V bias for display timing controllers and local backlight LED drivers in center-stack infotainment units. IC Role / Device Role / Timing Role: Fixed-output DC/DC with 2.1-MHz switching synchronized to display pixel clock to suppress beat frequencies. Use Value: SYNC/MODE pin allows external clock injection (1.9–2.3 MHz), eliminating visual artifacts caused by switching noise coupling into analog video paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM536005QDSXTQ1 | Same 5-V fixed output, but rated for 650 mA max load and lower current-limit thresholds (1.35 A HS, 0.78 A LS) | Suitable for lower-power camera modules or legacy BCMs where 1-A capability is unnecessary | Select when cost sensitivity outweighs headroom needs; shares identical pinout and footprint |
| TPS54360BQDDAQ1 | Adjustable 3.5–60 V input, 3.5-A output, 2.2-MHz sync-capable; higher IQ (14 µA) but no integrated RESET | Used where variable output or higher current is required, but adds external supervision circuitry | Choose for scalable platforms needing multiple output voltages; requires redesign for RESET functionality |
Compared with LM536005QDSXTQ1, LM536015QDSXTQ1 provides 54% higher output current and tighter current-limit margins for demanding ADAS loads; versus TPS54360BQDDAQ1, it trades programmability for integrated system-level features (RESET, auto-mode, smaller solution size) in fixed 5-V applications.
Availability
LM536015QDSXTQ1 is available at Aetrix Electronics and suitable for automotive camera power supplies, ADAS sensor rails, and body control modules requiring stable component supply with AEC-Q100 compliance and extended temperature support.
Supply support for LM536015QDSXTQ1 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 automotive power management ICs and AEC-Q100-qualified solutions.
LM536015QDSXTQ1 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 LM536015QDSXTQ1?
The LM536015QDSXTQ1 supports a maximum continuous output current of 1000 mA at 5 V. This rating is validated across the full AEC-Q100 Grade 1 temperature range (–40°C to +125°C ambient) and accounts for internal current limits (HS: 1.5–2.1 A, LS: 1.0–1.43 A) and thermal derating above 125°C junction temperature. The LM536015QDSXTQ1 maintains regulation accuracy within ±1.5% under these conditions.
Does the LM536015QDSXTQ1 require external compensation components?
No, the LM536015QDSXTQ1 features fully internal compensation, eliminating the need for external loop-compensation networks. Its peak current mode control architecture and integrated error amplifier are factory-tuned for stability with standard output capacitors (e.g., 22–47 µF ceramic) and inductors (1–2.2 µH), reducing design complexity and BOM count while ensuring robust performance across temperature and load variations.
How does the RESET function operate on the LM536015QDSXTQ1?
The LM536015QDSXTQ1 provides an open-drain RESET output that asserts low when output voltage falls below 94% of nominal 5 V (4.7 V) or rises above 106.5% (5.325 V), with 4–8 ms delay and 24-µs glitch filtering. It also goes low when EN is deasserted. The RESET pin requires an external pull-up resistor and serves as a system health indicator - replacing discrete supervisory ICs in automotive applications.
Can the LM536015QDSXTQ1 synchronize to an external clock?
Yes, the LM536015QDSXTQ1 supports external clock synchronization via its SYNC/MODE pin. When driven with a 1.9–2.3 MHz square wave (25–75% duty cycle), the device locks to the external clock's rising edge and operates in forced PWM mode at that frequency. Spread spectrum is automatically disabled during synchronization, enabling precise EMI management in noise-sensitive automotive systems.
What package type and thermal characteristics apply to the LM536015QDSXTQ1?
The LM536015QDSXTQ1 uses a 10-pin WSON (DSX) package measuring 3.0 mm × 3.0 mm with wettable flanks and an exposed thermal pad (DAP). Its thermal resistance is RθJA = 46.2°C/W (junction-to-ambient) and RθJC(bot) = 4.1°C/W (junction-to-case bottom), requiring direct DAP connection to a PCB ground plane for effective heat dissipation in automotive under-hood or camera housing environments.
LM536015QDSXTQ1 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)
LM536015QDSXTQ1 FAQ
1.How can I place an order for LM536015QDSXTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM536015QDSXTQ1 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 LM536015QDSXTQ1 reliable?
The price and inventory of LM536015QDSXTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM536015QDSXTQ1 is usually 5 days.
3.What payment methods are accepted for LM536015QDSXTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM536015QDSXTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM536015QDSXTQ1?
LM536015QDSXTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM536015QDSXTQ1 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 LM536015QDSXTQ1?
For technical support, including LM536015QDSXTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM536015QDSXTQ1 requirements.
6.How does Aetrix verify that LM536015QDSXTQ1 is sourced from the original manufacturer or authorized distributors?
All LM536015QDSXTQ1 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 LM536015QDSXTQ1 meets industry standards.
7.What is the process for return or replacement of LM536015QDSXTQ1?
All LM536015QDSXTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM536015QDSXTQ1, 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 LM536015QDSXTQ1 part is unused and in its original packaging.
Return procedure for LM536015QDSXTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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