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Texas Instruments LM536013QDSXTQ1
- Part No.:
- LM536013QDSXTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM536013QDSXTQ1.pdf
- Description:
- IC REG BUCK 3.3V 1A 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:652
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Product details
Overview
LM536013QDSXTQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering a fixed 3.3-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 - used in automotive camera power rails.
For engineers reviewing the LM536013QDSXTQ1 datasheet, LM536013QDSXTQ1 pinout, LM536013QDSXTQ1 application, or LM536013QDSXTQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and ESD ratings, and real-world selection guidance for camera and ADAS subsystems.
Technical Context
The LM536013QDSXTQ1 implements peak current mode control with internal compensation, enabling stable regulation across wide VIN (3.55–36 V) and load (0–1000 mA) ranges while maintaining 2.1-MHz fixed-frequency operation above the AM band. Its architecture supports seamless PWM/PFM transitions and diode emulation in AUTO mode via SYNC/MODE pin control.
It integrates a 3-V internal regulator (VCC), open-drain RESET with 4–8-ms delay and ±3% hysteresis, thermal shutdown at 151–185°C, and dual MOSFET power switches with 220-mΩ high-side and 200-mΩ low-side RDS(on). The device uses a 10-pin WSON package with exposed thermal pad (DAP) tied to GND for 4.1°C/W bottom-side thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% over load/temperature - ensures stable I/O rail for image sensors and SerDes interfaces. |
| Max Output Current | 1000 mA - supports full-power operation of multi-lane MIPI CSI-2 camera modules. |
| Input Voltage Range | 3.55 V to 36 V, with 42-V/100-ms transient tolerance - eliminates need for external surge clamping in 12-V automotive systems. |
| Quiescent Current | 23 µA - enables always-on camera functionality without battery drain during vehicle sleep mode. |
| Switching Frequency | 2.1 MHz (±10%) - allows use of compact 1.0–2.2-µH inductors and avoids AM radio interference. |
| RESET Output | Open-drain with 4–8-ms delay, 92–97% lower / 105–110% upper threshold - provides reliable system power-good signaling without external supervisor IC. |
| Junction Temp Range | –40°C to 150°C - qualified for under-hood and camera housing environments per AEC-Q100 Grade 1. |
Pinout & Package
LM536013QDSXTQ1 uses a 10-pin, 3.0 mm × 3.0 mm WSON (DSX) package with wettable flanks and thermally enhanced exposed pad (DAP) requiring direct connection to PCB ground plane for thermal management.
| 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 | Supplies bootstrap capacitor (100 nF) between SW and BOOT - critical for high-side MOSFET turn-on integrity. |
| 3 VCC | Internal 3-V regulator output | Powers internal control circuitry; requires 1.0-µF ceramic cap to AGND - decoupling directly impacts startup reliability. |
| 4 FB | Feedback input (fixed 3.3 V) | Direct connection to output node; 10-nF bypass cap required adjacent to pin - sets regulation accuracy and loop stability. |
| 5 AGND | Analog ground reference | Ground reference for FB and internal analog circuits - must be star-connected to DAP/GND to avoid noise coupling. |
| 6 RESET | Open-drain reset output | Asserts low on fault or EN deactivation; requires external pull-up - replaces discrete reset IC in camera ECU designs. |
| 7 EN | Enable input | Active-high logic; 1.7–2.0 V threshold with 0.4–0.55 V hysteresis - supports direct connection to microcontroller GPIO or ignition signal. |
| 8 VIN | Main input supply | Accepts 3.55–36 V; requires local 10-µF ceramic + bulk capacitance - primary path for input surge energy absorption. |
| 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 sync clock - enables EMI reduction or system clock synchronization. |
| 10 GND | Power ground | Low-impedance return for VIN and power stage - must be solidly connected to DAP and AGND via multiple vias. |
| DAP | Exposed thermal pad | Thermal-only connection to PCB ground plane - no electrical function; mandatory for achieving 4.1°C/W RθJC(bot). |
Key Features
| Feature | Design Value |
|---|---|
| Spread spectrum option | Enabled via part number suffix (e.g., LM53601NQDSXTQ1); ±4% frequency dither reduces peak EMI by >10 dB in camera EMC testing. |
| Pin-selectable PWM/PFM mode | SYNC/MODE pin state determines operation: low = AUTO (diode emulation), high = forced PWM - optimizes efficiency vs. noise trade-off per subsystem requirement. |
| Integrated RESET with filtering | On-chip 24-µs glitch filter and 4–8-ms release delay eliminate need for RC timing network - saves 3 components and 25 mm² PCB area. |
| Internal compensation | Eliminates external compensation network - reduces BOM count and design iteration time for 3.3-V camera rail applications. |
| Wettable flank package | Enables automated optical inspection (AOI) of solder joints - critical for zero-defect manufacturing in automotive camera modules. |
Applications
| Automotive Camera Power Supply | ADAS Domain Controller Core Rail |
|---|---|
Use Scenario: Powers 8-MP CMOS image sensor and MIPI CSI-2 serializer in rear-view camera module with start-stop capability. IC Role / Device Role / Timing Role: Primary 3.3-V buck regulator supplying sensor I/O, PLL, and interface logic; maintains regulation during cold-crank (4.5 V) and load-dump (42 V) transients. Use Value: 23-µA IQ enables <10-µA system standby current; 2.1-MHz switching allows 1.5-µH inductor, reducing solution size by 35% vs. 500-kHz alternatives. |
Use Scenario: Generates 3.3-V core voltage for SoC companion processor in forward-facing ADAS controller with functional safety monitoring. IC Role / Device Role / Timing Role: Safety-relevant power rail with integrated RESET output feeding watchdog timer; monitors output validity via 92–97% undervoltage threshold. Use Value: AEC-Q100 Grade 1 qualification and 150°C junction rating ensure compliance with ISO 26262 ASIL-B power integrity requirements. |
| Automotive Body Control Module (BCM) | Electronic Mirror Display Driver |
Use Scenario: Supplies 3.3-V logic rail for LIN gateway MCU and CAN transceiver in door module with extended temperature exposure. IC Role / Device Role / Timing Role: High-reliability point-of-load regulator; withstands 125°C ambient via 4.1°C/W thermal resistance and 151°C thermal shutdown. Use Value: 36-V max input and 42-V transient rating eliminate need for upstream TVS, reducing BOM cost by $0.18 per unit at scale. |
Use Scenario: Powers display timing controller and LED backlight driver IC in auto-dimming rearview mirror with wide dimming range. IC Role / Device Role / Timing Role: Stable 3.3-V reference for gamma correction DAC and SPI interface; soft-start (1.3–4.5 ms) prevents inrush-induced display flicker. Use Value: Adjustable soft-start time allows tuning to match display panel power-up sequence, eliminating firmware workarounds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM536003QDSXTQ1 | Same 3.3-V fixed output but rated for 650 mA max load; identical pinout, package, and feature set. | Suitable for lower-power camera modules (e.g., 2-MP sensors) or auxiliary BCM rails where 1-A headroom is unnecessary. | Select when load current ≤650 mA to reduce cost and thermal margin; verify thermal performance at 125°C ambient. |
| TPS543320RTWR | 3.3-V, 3-A buck with PMBus interface, 2.2-MHz switching, and higher 3.5-V min VIN; 16-pin QFN vs. 10-pin WSON. | Used where digital telemetry, dynamic voltage scaling, or higher current headroom is required - not drop-in compatible. | Choose only if telemetry, higher current, or programmability justify PCB redesign and firmware integration effort. |
Compared with LM536003QDSXTQ1, LM536013QDSXTQ1 provides 54% higher current capacity in identical footprint; versus TPS543320RTWR, it offers lower cost, simpler layout, and proven AEC-Q100 qualification without digital overhead.
Availability
LM536013QDSXTQ1 is available at Aetrix Electronics and suitable for automotive camera power supplies, ADAS domain controllers, and body electronics requiring stable component supply with AEC-Q100 traceability and 15-year lifecycle support.
Supply support for LM536013QDSXTQ1 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 deep expertise in automotive-grade power management ICs.
LM536013QDSXTQ1 belongs to TI's automotive-qualified DC/DC converter product line, designed specifically for demanding power-rail applications in cameras, ADAS, and body electronics where reliability, thermal robustness, and EMI control are critical.
FAQ
What is the maximum continuous output current supported by LM536013QDSXTQ1?
The LM536013QDSXTQ1 supports a maximum continuous output current of 1000 mA at ambient temperatures up to 85°C with proper PCB thermal design. At 125°C ambient, derating applies per thermal metrics: RθJA = 46.2°C/W limits usable current to approximately 650 mA. Full 1-A capability is ensured across –40°C to 125°C ambient when using 2 oz copper, 4 thermal vias under DAP, and ≥2 cm² ground plane.
Does LM536013QDSXTQ1 require external compensation components?
No, LM536013QDSXTQ1 features fully internal compensation, eliminating the need for external Type-II or Type-III compensation networks. This simplifies layout, reduces BOM count by up to 5 passive components, and accelerates design validation - confirmed in Section 8.3.2 of the SNAS660D datasheet and validated in TI's TIDA-01389 camera reference design.
How does the RESET output of LM536013QDSXTQ1 behave during startup and fault conditions?
The LM536013QDSXTQ1 RESET output remains low until output voltage reaches 92–97% of nominal 3.3 V and remains stable for ≥4–8 ms. It asserts low again if output drops below 92% or EN is pulled low. During startup, RESET stays low for treset_act (4–8 ms) after VOUT crosses threshold - providing clean power-good signaling to downstream processors without external timing components.
Can LM536013QDSXTQ1 operate with input voltage below 3.8 V?
Yes, LM536013QDSXTQ1 can start and regulate down to 3.55 V input after startup, as specified in Section 7.6. However, full functionality (including 100% load capability and 2.1-MHz operation) requires ≥3.8 V input for 3.3-V output. Below 3.8 V, frequency foldback occurs (down to 1.0 MHz), and duty cycle increases - verified in Figure 7-10 of SNAS660D under dropout conditions.
What is the purpose of the DAP (exposed pad) on LM536013QDSXTQ1, and how must it be connected?
The DAP on LM536013QDSXTQ1 serves exclusively for thermal conduction and must be soldered to a solid PCB ground plane using ≥4 thermal vias (0.3-mm diameter, spaced ≤1 mm apart). It has no electrical function - connecting it to any net other than GND violates TI's layout guidelines and risks thermal runaway. Proper DAP connection achieves RθJC(bot) = 4.1°C/W, essential for 150°C junction operation.
LM536013QDSXTQ1 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):
- 3.3V
- 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)
LM536013QDSXTQ1 FAQ
1.How can I place an order for LM536013QDSXTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM536013QDSXTQ1 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 LM536013QDSXTQ1 reliable?
The price and inventory of LM536013QDSXTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM536013QDSXTQ1 is usually 5 days.
3.What payment methods are accepted for LM536013QDSXTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM536013QDSXTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM536013QDSXTQ1?
LM536013QDSXTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM536013QDSXTQ1 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 LM536013QDSXTQ1?
For technical support, including LM536013QDSXTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM536013QDSXTQ1 requirements.
6.How does Aetrix verify that LM536013QDSXTQ1 is sourced from the original manufacturer or authorized distributors?
All LM536013QDSXTQ1 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 LM536013QDSXTQ1 meets industry standards.
7.What is the process for return or replacement of LM536013QDSXTQ1?
All LM536013QDSXTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM536013QDSXTQ1, 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 LM536013QDSXTQ1 part is unused and in its original packaging.
Return procedure for LM536013QDSXTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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