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Texas Instruments LM53600MQDSXRQ1
- Part No.:
- LM53600MQDSXRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM53600MQDSXRQ1.pdf
- Description:
- IC REG BUCK ADJ 650MA 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,013
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Product details
Overview
LM53600MQDSXRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous buck DC/DC converter delivering up to 650 mA at adjustable output voltage, operating from 3.55 V to 36 V input with transient tolerance to 42 V, fixed 2.1-MHz switching frequency, and spread-spectrum EMI reduction - used in automotive camera power rails.
For engineers reviewing the LM53600MQDSXRQ1 datasheet, LM53600MQDSXRQ1 pinout, LM53600MQDSXRQ1 application, or LM53600MQDSXRQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and electrical specs, and real-world selection guidance for camera and ADAS subsystems.
Technical Context
The LM53600MQDSXRQ1 implements peak current mode control with internal compensation, enabling stable regulation across wide VIN (3.55–36 V) and VOUT (3.3–6 V adjustable) ranges while maintaining 2.1-MHz fixed-frequency operation. Its architecture supports seamless PWM/PFM transitions and integrates a 3-V internal LDO for biasing control circuitry.
It features a multifunction SYNC/MODE pin enabling forced PWM mode (when high), AUTO mode with diode emulation (when low), or external clock synchronization (with valid 1.9–2.3 MHz signal). Spread spectrum is active by default but disabled during sync operation - confirmed for LM53600MQDSXRQ1 per Device Comparison table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.55 V to 36 V (transient tolerant to 42 V for ≤100 ms); enables direct battery connection without pre-regulation in 12-V automotive systems. |
| Output Current | 650 mA max continuous; matches load requirements of single-sensor automotive cameras and small ECUs. |
| Switching Frequency | 2.1 MHz nominal (±10%); places switching noise above AM band, reducing EMI filter size and cost. |
| Quiescent Current | 23 µA typical; sustains low-power sleep modes in always-on camera modules without draining battery. |
| Shutdown Current | 1.8 µA at 25°C; eliminates need for external load switch in ignition-off scenarios. |
| Output Voltage | Adjustable (3.3 V to 6 V); set via external resistor divider on FB pin - no fixed-voltage option required. |
| Spread Spectrum | Enabled (confirmed by "Yes" in Device Comparison table for LM53600MQDSXRQ1); reduces peak EMI by ±4% frequency dithering. |
| Junction Temp Range | –40°C to 150°C; ensures reliability in under-hood and camera housing environments per AEC-Q100 Grade 1. |
Pinout & Package
LM53600MQDSXRQ1 uses a 10-pin WSON (DSX) package, 3.00 mm × 3.00 mm body size, with wettable flanks and exposed thermal pad (DAP) requiring solder connection to PCB ground plane for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Connects to inductor; carries high dv/dt switching waveform - requires tight layout to minimize EMI and ringing. |
| 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 logic; bypass with 1.0-μF capacitor to AGND (fixed) or GND (adjustable version). |
| 4 FB | Feedback input (adjustable) | Voltage divider from output sets VOUT; reference = 1.0 V ±1.5%; no AGND connection needed for adjustable variant. |
| 5 BIAS | Bias supply for VCC regulator | Connected directly to output node; provides regulated VCC supply - critical for stability in adjustable configuration. |
| 6 RESET | Open-drain reset output | Asserts low when EN = low or output fault occurs; includes 24-µs glitch filter and 4–8 ms delay for clean system reset signaling. |
| 7 EN | Enable input | Logic-high (>1.7 V) enables regulation; hysteresis (0.4–0.55 V) prevents chatter near threshold; must not be left floating. |
| 8 VIN | Main input supply | Accepts 3.55–36 V; requires local 10-µF ceramic input capacitor placed adjacent to pin and GND. |
| 9 SYNC/MODE | Mode control & sync input | Pull low for AUTO mode (PFM at light load), pull high for forced PWM, or drive with 1.9–2.3 MHz clock for synchronization. |
| 10 GND | Power ground | Primary return path for VIN, SW, and internal circuits; must be connected to low-impedance PCB ground plane. |
| DAP | Exposed thermal pad | Electrically tied to GND; sole purpose is thermal conduction - requires full-solder coverage to inner ground layer for RθJB = 20.9°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated soft-start | 1.3–4.5 ms ramp time prevents inrush current - eliminates need for external soft-start circuitry in camera power sequencing. |
| Internal current limit | 1.0–1.65 A high-side, 0.65–0.93 A low-side (LM53600-Q1); protects against short-circuit and overload without external sensing components. |
| Reset output with filtering | 24-µs glitch filter + 4–8 ms release delay provides robust power-good signaling - replaces discrete supervisor IC in compact camera modules. |
| Thermal shutdown | 151–185°C rising threshold with 10°C hysteresis; ensures safe operation during sustained high-temp conditions in sealed enclosures. |
| Zero-cross detection | Enables diode emulation in AUTO mode; reduces light-load losses by preventing reverse inductor current - improves efficiency below 50 mA. |
Applications
| Automotive Camera Power | ADAS Sensor Rail |
|---|---|
Use Scenario: Powers image sensor, ISP, and interface circuitry in rear-view or surround-view camera modules mounted in hot, vibration-prone locations. IC Role / Device Role: Primary 3.3-V or 5-V step-down regulator supplying regulated rail with ultra-low quiescent current during vehicle sleep mode. Use Value: 23-µA IQ and 1.8-µA shutdown current extend battery life in always-on camera systems; 36-V input withstands load-dump transients. |
Use Scenario: Supplies radar front-end, ultrasonic transceiver, or lane-departure warning sensor in driver assistance ECUs. IC Role / Device Role: Compact, AEC-Q100-compliant DC/DC converter delivering stable 3.3-V or 5-V output from 12-V battery with minimal board space. Use Value: 2.1-MHz switching allows use of 1.0-µH inductors and 10-µF ceramic output caps - reduces solution footprint by >40% vs. 500-kHz alternatives. |
| Body Control Module Sub-Rail | Infotainment Display Backlight |
Use Scenario: Generates auxiliary 3.3-V rail for LIN gateway, door module MCU, or seat position sensor in body electronics. IC Role / Device Role: Automotive-grade buck converter with integrated RESET output used for system-level power monitoring and brownout recovery. Use Value: Integrated open-drain RESET with programmable delay eliminates external supervisory IC - saves BOM cost and PCB area in space-constrained modules. |
Use Scenario: Powers LED driver IC or display timing controller in center-stack infotainment displays exposed to cabin temperature extremes. IC Role / Device Role: High-reliability step-down regulator supporting adjustable output (3.3–6 V) to match varying backlight driver input requirements. Use Value: –40°C to 150°C junction rating ensures uninterrupted operation across full automotive ambient range; spread spectrum reduces EMI coupling into sensitive video signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM53601MQDSXRQ1 | Same package, spread spectrum, but rated for 1-A output; higher current capability with identical pinout and feature set. | Used where camera or sensor load exceeds 650 mA - e.g., multi-sensor fusion modules or high-resolution imaging. | Select LM53601MQDSXRQ1 only if ≥1-A output is required; otherwise LM53600MQDSXRQ1 offers optimal cost/performance for ≤650-mA loads. |
| TPS62903-Q1 | 3-V to 18-V input, 1-A output, 2.25-MHz fixed frequency, lower IQ (15 µA), but no spread spectrum or RESET output. | Suitable for lower-voltage automotive domains (e.g., infotainment core rails) where 36-V input and RESET are not needed. | Choose TPS62903-Q1 for compact 12-V-only systems prioritizing lowest IQ; retain LM53600MQDSXRQ1 when 36-V input, RESET, or spread spectrum are mandatory. |
Compared with LM53601MQDSXRQ1, LM53600MQDSXRQ1 provides precise 650-mA current matching for cost-sensitive camera rails without overdesign; versus TPS62903-Q1, it uniquely combines 36-V input tolerance, integrated RESET, and spread spectrum - essential for harsh-environment automotive vision systems.
Availability
LM53600MQDSXRQ1 is available at Aetrix Electronics and suitable for automotive camera power, ADAS sensor rails, and body control module sub-rails requiring stable component supply with AEC-Q100 qualification and long-term production continuity.
Supply support for LM53600MQDSXRQ1 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 power management ICs and AEC-Q100-compliant design.
LM53600MQDSXRQ1 belongs to TI's automotive-grade synchronous buck regulator product line, engineered specifically for camera, ADAS, and body electronics applications demanding high efficiency, low IQ, and robust transient performance in extreme temperature environments.
FAQ
What is the maximum output current supported by the LM53600MQDSXRQ1?
The LM53600MQDSXRQ1 supports a maximum continuous output current of 650 mA, as specified in the Device Comparison table and confirmed in Section 7.3 Recommended Operating Conditions. This rating applies across the full –40°C to 150°C junction temperature range and is distinct from the 1-A capability of the LM53601-Q1 family. Exceeding 650 mA may trigger overcurrent protection or thermal shutdown.
Does the LM53600MQDSXRQ1 include spread spectrum modulation?
Yes, the LM53600MQDSXRQ1 includes enabled spread spectrum modulation, as explicitly listed in the Device Comparison table under "Spread Spectrum" = "Yes" for part number LM53600MQDSXRQ1. This feature reduces peak EMI by dithering the 2.1-MHz switching frequency ±4%, and is active by default unless an external synchronization signal is applied to the SYNC/MODE pin.
What is the function of the BIAS pin on the LM53600MQDSXRQ1?
The BIAS pin on the LM53600MQDSXRQ1 serves as the power source for the internal 3-V VCC regulator in adjustable-output configurations. It must be connected directly to the output voltage node, with a 10-nF bypass capacitor placed adjacent to the pin. Unlike fixed-output variants that use AGND, the BIAS pin ensures stable VCC regulation independent of ground path impedance - critical for accuracy in adjustable designs.
Can the LM53600MQDSXRQ1 operate with an input voltage below 3.8 V?
Yes, the LM53600MQDSXRQ1 can operate with input voltages as low as 3.55 V after startup, per Section 7.6 System Characteristics. However, full functionality (including regulation accuracy and current capability) at 500-mA load requires VIN ≥ 3.8 V for 3.3-V outputs. Below 3.55 V, UVLO activates and disables regulation - minimum rising UVLO threshold is 3.2 V with 0.2–0.35 V hysteresis.
Is the LM53600MQDSXRQ1 pin-compatible with other devices in the LM53600-Q1 family?
Yes, all LM53600-Q1 and LM53601-Q1 devices share the same 10-pin WSON (DSX) package and identical pinout, including LM53600MQDSXRQ1. This allows drop-in replacement between adjustable, 3.3-V, and 5-V variants - provided output voltage requirements and current ratings align. Layout and external components remain unchanged across the family.
LM53600MQDSXRQ1 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)
LM53600MQDSXRQ1 FAQ
1.How can I place an order for LM53600MQDSXRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM53600MQDSXRQ1 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 LM53600MQDSXRQ1 reliable?
The price and inventory of LM53600MQDSXRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM53600MQDSXRQ1 is usually 5 days.
3.What payment methods are accepted for LM53600MQDSXRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM53600MQDSXRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM53600MQDSXRQ1?
LM53600MQDSXRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM53600MQDSXRQ1 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 LM53600MQDSXRQ1?
For technical support, including LM53600MQDSXRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM53600MQDSXRQ1 requirements.
6.How does Aetrix verify that LM53600MQDSXRQ1 is sourced from the original manufacturer or authorized distributors?
All LM53600MQDSXRQ1 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 LM53600MQDSXRQ1 meets industry standards.
7.What is the process for return or replacement of LM53600MQDSXRQ1?
All LM53600MQDSXRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM53600MQDSXRQ1, 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 LM53600MQDSXRQ1 part is unused and in its original packaging.
Return procedure for LM53600MQDSXRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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