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Texas Instruments LM53600MQDSXTQ1
- Part No.:
- LM53600MQDSXTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM53600MQDSXTQ1.pdf
- Description:
- IC REG BUCK ADJ 650MA 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,744
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Product details
Overview
LM53600MQDSXTQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering up to 650 mA at 3.3 V, 5 V, or adjustable output; features 2.1-MHz fixed switching frequency, 23-µA quiescent current, and spread-spectrum operation for EMI reduction in camera and ADAS power rails.
For engineers reviewing the LM53600MQDSXTQ1 datasheet, LM53600MQDSXTQ1 pinout, LM53600MQDSXTQ1 application, or LM53600MQDSXTQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and electrical specs, and real-world implementation guidance for safety-critical 12-V and 24-V vehicle systems.
Technical Context
The LM53600MQDSXTQ1 implements peak current mode control with internal compensation, enabling stable regulation across 3.55 V–36 V input (transient-rated to 42 V) while maintaining 2.1-MHz switching in forced PWM or AUTO mode with diode emulation. Its architecture supports 3.3-V output from as low as 3.8-V input via optimized minimum on-time.
It integrates a 3-V internal regulator (VCC), open-drain RESET with 4–8-ms delay and ±4% hysteresis, SYNC/MODE pin for external clock synchronization or mode selection, and thermal shutdown at 151°C–185°C with 10°C hysteresis - all qualified for –40°C to 150°C junction operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 650 mA max - supports full-load operation in automotive body and camera modules without derating at 125°C ambient. |
| Input Voltage Range | 3.55 V to 36 V - enables direct connection to 12-V and 24-V battery rails with transient tolerance to 42 V for load-dump immunity. |
| Switching Frequency | 2.1 MHz (±10%) - places switching noise above AM band, reducing EMI filter size and cost in compact PCB layouts. |
| Quiescent Current | 23 µA - sustains ultra-low standby power in always-on vehicle subsystems such as surround-view cameras. |
| Spread Spectrum | Enabled - ±4% frequency dithering reduces peak EMI by >10 dB, easing CISPR 25 Class 5 compliance. |
| RESET Output | Open-drain with 4–8 ms delay and 92–97% / 105–110% VOUT thresholds - replaces discrete supervisory ICs in ASIL-B designs. |
| Junction Temp Range | –40°C to 150°C - meets AEC-Q100 Grade 1 requirements for under-hood and ADAS ECU placement. |
Pinout & Package
LM53600MQDSXTQ1 uses a 10-pin WSON (DSX) package, 3.0 mm × 3.0 mm, with wettable flanks and exposed thermal pad (DAP) requiring direct solder 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 to minimize EMI and voltage spikes. |
| 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 | Supplies internal control circuitry; bypass with 1.0-µF capacitor to AGND (fixed) or GND (adjustable version). |
| 4 FB | Feedback input (adjustable mode) | Connects to resistor divider from output; sets VOUT with 0.993–1.007 V reference - enables 3.3–6 V adjustable range. |
| 5 BIAS | VCC bias source (adjustable mode) | Connected to output node; provides regulated bias for VCC regulator - eliminates need for separate LDO in adjustable configurations. |
| 6 RESET | Open-drain system reset | Asserts low on fault or EN deactivation; requires external pull-up - provides filtered, delayed status signal for microcontroller boot sequencing. |
| 7 EN | Enable input | Active-high logic; threshold 1.7–2.0 V with 0.4–0.55 V hysteresis - supports direct connection to MCU GPIO or battery monitor outputs. |
| 8 VIN | Main input supply | Accepts 3.55–36 V; requires local 10-µF ceramic + bulk capacitance near pin to suppress transients and reduce input ripple. |
| 9 SYNC/MODE | Mode control & sync input | Configures AUTO (light-load PFM), forced PWM, or external sync; tolerant to VIN-level voltages - enables seamless EMI optimization. |
| 10 GND | Power ground | Low-impedance return path for VIN, SW, and internal circuits; must be connected directly to thermal pad (DAP) and system ground plane. |
| DAP | Thermal pad (exposed) | Electrically isolated ground connection - sole purpose is thermal dissipation; must be soldered to ≥2 cm² copper area for RθJB = 20.9°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum modulation | ±4% frequency dithering reduces conducted EMI peaks by >10 dB - eliminates need for large ferrite beads in camera module power stages. |
| Integrated RESET with delay | 4–8 ms glitch-filtered assertion time and 92–97%/105–110% VOUT thresholds - replaces external supervisor ICs in ASIL-B domain controllers. |
| Ultra-low IQ (23 µA) | Enables direct battery connection in always-on vision systems without auxiliary LDO - cuts standby power by >50% vs legacy buck converters. |
| 3.8-V minimum start-up | Regulates 3.3-V output from input as low as 3.8 V - supports cold-crank operation in 12-V vehicles down to 6 V battery voltage. |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to 125°C ambient (–40°C to 150°C junction); HBM ±2 kV, CDM ±750 V - certified for front-end camera and radar ECU use. |
Applications
| Automotive Camera Power Supply | ADAS Domain Controller Core Rail |
|---|---|
Use Scenario: Powers image sensor, ISP, and MIPI interface in rear-view or surround-view camera modules mounted in exterior housings. IC Role / Device Role / Timing Role: Primary 3.3-V or 5-V buck regulator with integrated RESET for safe boot and fault reporting to SoC. Use Value: Spread spectrum and 2.1-MHz switching eliminate AM-band interference with RF receivers; 23-µA IQ extends parking-mode runtime. |
Use Scenario: Supplies 3.3-V core voltage to radar or vision processing SoCs in centralized ADAS ECUs operating under hood or near battery. IC Role / Device Role / Timing Role: High-reliability synchronous buck with thermal shutdown and wide-input capability for 12-V/24-V dual-battery architectures. Use Value: 150°C junction rating and AEC-Q100 qualification ensure uninterrupted operation during engine heat soak; 42-V transient tolerance handles load dump. |
| Automotive Body Control Module (BCM) | Electronic Mirror Display Power |
Use Scenario: Generates 5-V rail for LIN gateway, door module MCUs, and LED drivers in distributed body electronics. IC Role / Device Role / Timing Role: Compact, low-noise DC/DC converter with ENABLE control synchronized to vehicle wake-up signals. Use Value: 3-mm × 3-mm WSON package saves space in tight BCM enclosures; 1.8-µA shutdown current prevents battery drain during extended park mode. |
Use Scenario: Provides regulated 3.3-V supply to OLED/LCD display drivers and touch controller in auto-dimming rearview mirrors. IC Role / Device Role / Timing Role: Adjustable-output buck with precise feedback (±1% initial accuracy) for stable display brightness control. Use Value: Adjustable output allows single BOM for multiple mirror variants; RESET output coordinates display initialization with MCU boot sequence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM53601MQDSXTQ1 | 1-A output rating, identical pinout and features; higher current limit (1.5–2.1 A HS, 1.0–1.43 A LS) and lower Rdson (HS: 180 mΩ, LS: 160 mΩ). | Supports higher-power ADAS sensors or multi-rail BCMs where 650 mA is insufficient. | Select when load exceeds 650 mA or thermal margin is constrained; same layout, no redesign required. |
| TPS62130AQDSGRQ1 | 3-A output, 2.5-MHz switching, 17-µA IQ, but no spread spectrum or integrated RESET; 10-pin WSON (3×3 mm) with different pin mapping (e.g., no dedicated SYNC/MODE). | Suitable for high-current non-EMI-sensitive applications like HVAC actuators, but lacks automotive-specific supervision features. | Choose only if higher current and lower IQ outweigh need for RESET and EMI control; requires PCB layout change. |
Compared with LM53601MQDSXTQ1, the LM53600MQDSXTQ1 offers tighter thermal design margins at 650 mA loads and lower system cost where full 1-A capability is unnecessary; versus TPS62130AQDSGRQ1, it delivers superior functional integration for ASIL-B-compliant vision systems despite slightly higher IQ.
Availability
LM53600MQDSXTQ1 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 traceability and long-term production support.
Supply support for LM53600MQDSXTQ1 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 and functional safety certification.
The LM53600-Q1 product line was designed specifically for demanding automotive environments - delivering high efficiency, ultra-low quiescent current, and integrated supervision in compact packages for camera, radar, and body electronics.
FAQ
What is the maximum output current supported by the LM53600MQDSXTQ1?
The LM53600MQDSXTQ1 supports a maximum continuous output current of 650 mA. This rating is validated across the full AEC-Q100 Grade 1 temperature range (–40°C to 125°C ambient) and accounts for thermal derating at elevated junction temperatures. The device maintains regulation and protection functionality up to its 150°C junction limit, making it suitable for sustained operation in engine bay or camera housing environments where airflow is limited.
Does the LM53600MQDSXTQ1 include spread-spectrum modulation, and how is it enabled?
Yes, the LM53600MQDSXTQ1 includes spread-spectrum modulation as a factory-enabled feature - no external configuration is required. It operates with ±4% frequency dithering centered at 2.1 MHz, reducing peak EMI emissions by >10 dB. Spread spectrum is automatically disabled only when a valid external clock signal is applied to the SYNC/MODE pin; otherwise, it remains active in both AUTO and forced PWM modes.
How does the RESET output of the LM53600MQDSXTQ1 function, and what are its timing characteristics?
The LM53600MQDSXTQ1 features an open-drain RESET output with built-in filtering and delay. It asserts low when output voltage falls below 92–97% of nominal or when EN is deasserted. After fault clearance or EN activation, RESET releases high after a 4–8 ms delay. The output has 50–120 Ω on-resistance and requires an external pull-up; it provides reliable power-good signaling for microcontroller boot sequencing in ASIL-B systems.
What is the minimum input voltage required for the LM53600MQDSXTQ1 to regulate a 3.3-V output?
The LM53600MQDSXTQ1 can regulate a 3.3-V output from a minimum input voltage of 3.55 V after startup, and 3.8 V at full 650-mA load. This capability is enabled by its optimized minimum on-time and peak current mode control, allowing operation during cold-crank conditions in 12-V automotive systems where battery voltage may dip to 6 V. Startup UVLO is 3.2–3.75 V with 0.2–0.35 V hysteresis.
Is the LM53600MQDSXTQ1 pin-compatible with other devices in the LM5360x-Q1 family?
Yes, the LM53600MQDSXTQ1 shares identical 10-pin WSON (DSX) packaging, pinout, and footprint with all LM53600-Q1 and LM53601-Q1 variants, including LM53600AQDSXTQ1, LM536003QDSXTQ1, and LM53601MQDSXTQ1. This enables drop-in replacement across output voltage (3.3 V, 5 V, adjustable) and spread-spectrum options without PCB layout changes - simplifying BOM consolidation and design reuse.
LM53600MQDSXTQ1 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.8V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 650mA
- 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)
LM53600MQDSXTQ1 FAQ
1.How can I place an order for LM53600MQDSXTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM53600MQDSXTQ1 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 LM53600MQDSXTQ1 reliable?
The price and inventory of LM53600MQDSXTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM53600MQDSXTQ1 is usually 5 days.
3.What payment methods are accepted for LM53600MQDSXTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM53600MQDSXTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM53600MQDSXTQ1?
LM53600MQDSXTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM53600MQDSXTQ1 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 LM53600MQDSXTQ1?
For technical support, including LM53600MQDSXTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM53600MQDSXTQ1 requirements.
6.How does Aetrix verify that LM53600MQDSXTQ1 is sourced from the original manufacturer or authorized distributors?
All LM53600MQDSXTQ1 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 LM53600MQDSXTQ1 meets industry standards.
7.What is the process for return or replacement of LM53600MQDSXTQ1?
All LM53600MQDSXTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM53600MQDSXTQ1, 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 LM53600MQDSXTQ1 part is unused and in its original packaging.
Return procedure for LM53600MQDSXTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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