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Texas Instruments LM536013QDSXRQ1
- Part No.:
- LM536013QDSXRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM536013QDSXRQ1.pdf
- Description:
- IC REG BUCK 3.3V 1A 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,956
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Product details
Overview
LM536013QDSXRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous buck 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, featuring 2.1-MHz fixed switching frequency, 23-µA quiescent current, and integrated RESET output with delay and filtering - used in automotive camera power rails.
For engineers reviewing the LM536013QDSXRQ1 datasheet, LM536013QDSXRQ1 pinout, LM536013QDSXRQ1 application, or LM536013QDSXRQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and electrical specs, and real-world substitution guidance for body electronics, ADAS, and camera module designs.
Technical Context
The LM536013QDSXRQ1 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. Its architecture supports seamless PWM/PFM transitions and achieves 3.3-V output regulation from as low as 3.8-V input.
It integrates a 3-V internal LDO for biasing, open-drain RESET with 4–8-ms assertion delay and 24-µs glitch filtering, and a multifunction SYNC/MODE pin supporting external clock synchronization, forced PWM, or AUTO mode with diode emulation - all qualified for –40°C to 125°C ambient (–40°C to 150°C junction).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% over full load and temperature range - ensures stable I/O rail for image sensors and SerDes interfaces. |
| Max Output Current | 1000 mA continuous - supports high-current automotive camera modules without external current boosting. |
| Input Voltage Range | 3.55 V to 36 V, with 42-V transient tolerance - eliminates need for upstream TVS or active surge protection in 12-V vehicle systems. |
| Quiescent Current | 23 µA - enables always-on functionality in low-power camera wake-up circuits without battery drain. |
| Switching Frequency | 2.1 MHz (±10%) - places switching noise above AM band, reducing EMI filter size and cost. |
| RESET Output | Open-drain with 4–8 ms delay and 24-µs glitch filter - replaces discrete supervisory ICs in safety-critical camera boot sequencing. |
| Junction Temp Range | –40°C to 150°C - meets under-hood thermal requirements for front-facing ADAS cameras. |
| AEC-Q100 Grade | Grade 1 (–40°C to 125°C ambient) - certified for automotive body and driver assistance applications. |
Pinout & Package
LM536013QDSXRQ1 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.
| 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 proper high-side MOSFET turn-on. |
| 3 VCC | Internal 3-V regulator output | Powers internal control circuitry; requires 1.0-µF ceramic capacitor to AGND - stabilizes bias under load transients. |
| 4 FB | Feedback input (fixed 3.3 V) | Direct connection to output node; senses regulated voltage - bypass with 10-nF capacitor adjacent to pin for noise immunity. |
| 5 AGND | Analog ground reference | Ground reference for FB and internal analog blocks - must be connected to quiet ground plane, separate from power GND if possible. |
| 6 RESET | Open-drain reset output | Asserts low on fault or EN deactivation; requires external pull-up - provides system-ready signal after soft-start and output stabilization. |
| 7 EN | Enable input | Active-high logic; threshold 1.7–2.0 V - allows direct connection to microcontroller GPIO or ignition-sensed supply. |
| 8 VIN | Main input supply | Accepts 3.55–36 V; requires local 10-µF ceramic bypass capacitor to GND - primary path for input ripple current. |
| 9 SYNC/MODE | Mode selection & sync input | Configures FPWM/AUTO mode or accepts external 1.9–2.3 MHz clock - disables spread spectrum when synchronized. |
| 10 GND | Power ground | Low-impedance return for VIN and power switches - must be tied to DAP and thermal pad for optimal thermal performance. |
| DAP | Exposed thermal pad | Thermal-only connection to PCB ground plane - no electrical function; solder mask opening required per TI layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RESET with delay & filtering | Eliminates external supervisor IC, reduces BOM count by one component, and ensures reliable power-good signaling after 4–8 ms of stable output. |
| 2.1-MHz fixed-frequency operation | Enables use of compact 1.0–2.2-µH inductors and 10–22-µF ceramic output capacitors - cuts solution size by >30% vs. 500-kHz converters. |
| Ultra-low 23-µA quiescent current | Supports ISO 16750-2 "parking mode" compliance for automotive cameras with <100-µA system standby budget. |
| Wide 3.55–36-V input range | Operates directly from vehicle battery (cold crank down to 3.55 V) and withstands load dump surges up to 42 V - removes need for pre-regulator stage. |
| AEC-Q100 Grade 1 qualification | Validated for automotive body and ADAS applications with HBM ±2000 V, CDM ±750 V, and –40°C to 125°C ambient operation. |
| Internal compensation & soft-start | Reduces external component count to only VIN/COUT/CBOOT capacitors and inductor - accelerates design cycle and improves reliability. |
Applications
| Automotive Camera Power Supply | ADAS Domain Controller Rail |
|---|---|
Use Scenario: Powers CMOS image sensor, ISP, and serializer in rear-view or surround-view camera modules mounted in exterior housings. IC Role / Device Role / Timing Role: Primary 3.3-V buck regulator providing clean, low-noise power with fast transient response to sensor burst modes. Use Value: 23-µA IQ enables always-on wake-on-motion functionality; 2.1-MHz switching avoids AM-band interference in RF-sensitive camera PCB layouts. |
Use Scenario: Supplies auxiliary 3.3-V rail for communication interfaces (e.g., CAN FD transceivers, Ethernet PHYs) in centralized ADAS domain controllers. IC Role / Device Role / Timing Role: Secondary regulated rail decoupled from main 5-V processor supply - isolates noise-sensitive comms from digital switching noise. Use Value: RESET output synchronizes firmware initialization across multiple subsystems; AEC-Q100 Grade 1 ensures reliability in vibration-prone under-dash mounting. |
| Automotive Body Control Module | In-Cabin Driver Monitoring System |
Use Scenario: Delivers 3.3-V power to LIN transceivers, LED drivers, and small microcontrollers in door modules and seat control units. IC Role / Device Role / Timing Role: Compact, thermally robust DC/DC replacing linear regulators to improve efficiency and reduce heat in sealed enclosures. Use Value: 3.0 mm × 3.0 mm WSON package fits tight board space; 150°C junction rating sustains operation near HVAC ducts or lighting heat sources. |
Use Scenario: Powers IR illumination LEDs and time-of-flight sensor in driver attention monitoring systems embedded in rearview mirrors or overhead consoles. IC Role / Device Role / Timing Role: High-efficiency step-down regulator enabling pulsed LED operation with minimal thermal rise during extended cabin occupancy detection. Use Value: 1000-mA capability drives multiple high-intensity IR LEDs; spread spectrum option (disabled in LM536013QDSXRQ1 but available in M/N variants) reduces EMI coupling into sensitive optical receivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM536003QDSXRQ1 | Same 3.3-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 sensor nodes where 1-A capability is unnecessary. | Select LM536003QDSXRQ1 when load current stays below 650 mA and cost optimization is prioritized over headroom. |
| TPS62130AQDGSRQ1 | 3-V to 17-V input, 3.3-V fixed output, 3-A capability, 2.5-MHz switching, but lacks integrated RESET and spread spectrum. | Better suited for higher-current applications like radar preprocessing units, not drop-in for LM536013QDSXRQ1 due to different VIN range and missing RESET. | Choose TPS62130AQDGSRQ1 only when >1-A output and wider VIN margin are needed, and external reset supervision is acceptable. |
Compared with LM536003QDSXRQ1, LM536013QDSXRQ1 provides +54% current headroom and higher current-limit thresholds for robust short-circuit handling; versus TPS62130AQDGSRQ1, it offers integrated RESET and 42-V transient tolerance at the expense of lower max current and narrower VIN upper limit.
Availability
LM536013QDSXRQ1 is available at Aetrix Electronics and suitable for automotive camera power supplies, ADAS domain controller auxiliary rails, and body control module voltage regulation requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for LM536013QDSXRQ1 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.
LM536013QDSXRQ1 belongs to TI's automotive-qualified DC/DC buck regulator product line, designed specifically for demanding automotive environments including camera modules, ADAS sensors, and body electronics requiring high reliability, low IQ, and compact footprint.
FAQ
What is the maximum continuous output current supported by LM536013QDSXRQ1?
The LM536013QDSXRQ1 supports a maximum continuous output current of 1000 mA at 3.3 V under recommended operating conditions (–40°C to 125°C ambient, proper thermal layout). This rating is validated per TI's datasheet Section 7.3 and applies to the LM53601-Q1 variant with fixed 3.3-V output. Exceeding this current may trigger thermal shutdown or degrade regulation accuracy.
Does LM536013QDSXRQ1 include an integrated power-good or reset signal?
Yes, LM536013QDSXRQ1 features an open-drain RESET output with built-in glitch filtering (24 µs) and programmable delay (4–8 ms), providing a true power-good indication after output stabilization. The RESET pin asserts low during startup, fault conditions, or when EN is deasserted - eliminating the need for external supervisory ICs in automotive camera and ADAS designs.
What package type and thermal characteristics does LM536013QDSXRQ1 use?
LM536013QDSXRQ1 uses a 10-pin WSON (DSX) package measuring 3.0 mm × 3.0 mm with wettable flanks and an exposed thermal pad (DAP). Its junction-to-ambient thermal resistance (RθJA) is 46.2°C/W, and junction-to-board (RθJB) is 20.9°C/W - requiring direct DAP soldering to a solid ground plane for reliable operation at 1000 mA in automotive ambient temperatures up to 125°C.
Can LM536013QDSXRQ1 operate with input voltages below 4 V?
Yes, LM536013QDSXRQ1 supports a minimum input voltage of 3.55 V after startup and can regulate a 3.3-V output from as low as 3.8 V, as confirmed in Section 7.6 of the datasheet. This enables reliable operation during cold-crank conditions in 12-V automotive systems, though startup requires ≥3.6 V (UVLO rising threshold) and sufficient input capacitance to sustain regulation during transients.
Is LM536013QDSXRQ1 pin-compatible with other members of the LM5360x-Q1 family?
LM536013QDSXRQ1 shares identical pinout and package with all LM53600/01-Q1 devices in the DSX WSON-10 package, including LM536003QDSXRQ1 and LM536015QDSXRQ1. However, output voltage and current ratings differ - substituting a 5-V or adjustable variant requires verifying feedback network, current-limit behavior, and thermal design for the new load profile.
LM536013QDSXRQ1 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)
LM536013QDSXRQ1 FAQ
1.How can I place an order for LM536013QDSXRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM536013QDSXRQ1 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 LM536013QDSXRQ1 reliable?
The price and inventory of LM536013QDSXRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM536013QDSXRQ1 is usually 5 days.
3.What payment methods are accepted for LM536013QDSXRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM536013QDSXRQ1 transactions.
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4.How is shipping managed for LM536013QDSXRQ1?
LM536013QDSXRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM536013QDSXRQ1 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 LM536013QDSXRQ1?
For technical support, including LM536013QDSXRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM536013QDSXRQ1 requirements.
6.How does Aetrix verify that LM536013QDSXRQ1 is sourced from the original manufacturer or authorized distributors?
All LM536013QDSXRQ1 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 LM536013QDSXRQ1 meets industry standards.
7.What is the process for return or replacement of LM536013QDSXRQ1?
All LM536013QDSXRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM536013QDSXRQ1, 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 LM536013QDSXRQ1 part is unused and in its original packaging.
Return procedure for LM536013QDSXRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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