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Texas Instruments LM53600MQUDSXRQ1
- Part No.:
- LM53600MQUDSXRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM53600MQUDSXRQ1.pdf
- Description:
- IC REG BUCK ADJ 650MA 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,943
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Product details
Overview
LM53600MQUDSXRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous buck 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, 3.55–36-V input range (42-V transient tolerant), and spread-spectrum operation - deployed in automotive camera power rails.
For engineers reviewing the LM53600MQUDSXRQ1 datasheet, LM53600MQUDSXRQ1 pinout, LM53600MQUDSXRQ1 application, or LM53600MQUDSXRQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and ESD ratings, and real-world implementation constraints for safety-critical vehicle subsystems.
Technical Context
The LM53600MQUDSXRQ1 implements peak-current-mode control with internal compensation, enabling stable regulation across 3.55–36-V input while maintaining 2.1-MHz switching - above AM band for reduced EMI filtering. Its adaptive AUTO mode enables diode emulation at light load, while forced PWM mode ensures constant frequency under dynamic conditions.
It integrates a 3-V internal LDO (VCC), open-drain RESET with 4–8-ms delay and 24-µs glitch filter, and SYNC/MODE pin supporting external clock synchronization (1.9–2.3 MHz) or pin-selectable operating mode. The non-wettable-flank WSON-10 package supports automated optical inspection without solder bridging risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.55 V to 36 V (transient-rated to 42 V for ≤100 ms); enables direct battery connection without pre-regulator in 12-V automotive systems. |
| Output Current | 650 mA maximum continuous; sufficient for powering image sensors, SerDes PHYs, and microcontrollers in ADAS camera modules. |
| Switching Frequency | 2.1 MHz nominal (±10%); allows use of compact 1–2.2-µH inductors and avoids AM radio interference band. |
| Quiescent Current | 23 µA typical; sustains low-power sleep modes in always-on vision systems without draining battery. |
| RESET Output | Open-drain with 4–8 ms delay and 24-µs glitch filter; provides reliable power-good indication without external supervisor IC. |
| Thermal Rating | Junction temperature range –40°C to 150°C; qualified per AEC-Q100 Grade 1 (–40°C to +125°C ambient). |
| ESD Robustness | HBM ±2000 V on VIN/SW/CBOOT; CDM ±750 V on corner pins; meets automotive board-level reliability requirements. |
Pinout & Package
LM53600MQUDSXRQ1 uses a 10-pin WSON (DSX) package, 3.0 mm × 3.0 mm body size, with non-wettable flanks - optimized for AOI-compatible reflow and high-reliability automotive assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Connects directly to inductor; carries high-frequency pulsed current; requires tight layout to minimize EMI and voltage spikes. |
| 2 BOOT | High-side gate driver supply | Requires 100-nF ceramic capacitor between BOOT and SW; critical for MOSFET turn-on robustness. |
| 3 VCC | Internal 3-V regulator output | Supplies internal control circuitry; bypass with 1.0-µF capacitor to GND (not AGND) for adjustable versions. |
| 4 FB | Feedback input (adjustable version) | Connects to resistor divider from output; sets regulated voltage via 1.0-V reference; input bias <20 nA enables high-R dividers. |
| 5 BIAS | VCC power source (adjustable version) | Connected to output rail; supplies VCC regulator; bypass with 10-nF capacitor adjacent to pin for stability. |
| 6 RESET | Open-drain reset output | Asserts low during fault or EN=low; requires external pull-up; delay/release timing eliminates false triggers from transients. |
| 7 EN | Enable input | Active-high logic; threshold 1.7–2.0 V rising; hysteresis 0.4–0.55 V prevents chatter near trip point. |
| 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 selection & sync input | Tied high = forced PWM; tied low = AUTO mode with diode emulation; driven externally = synchronized 1.9–2.3 MHz operation. |
| 10 GND | Power ground | Primary return path for VIN, SW, and internal circuits; must be connected to solid ground plane under DAP. |
| DAP | Exposed thermal pad | Electrically isolated ground-connected thermal interface; requires full-solder coverage to PCB ground plane for RθJB = 20.9°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum modulation | Reduces peak EMI by ±4% frequency dithering at 30-Hz pattern rate - simplifies compliance with CISPR 25 Class 5. |
| Pin-selectable PWM/AUTO mode | SYNC/MODE pin configures fixed-frequency PWM (noise-sensitive apps) or light-load diode-emulation AUTO (efficiency-critical apps). |
| Integrated RESET with filtering | Eliminates need for external supervisory IC; built-in 24-µs glitch filter and 4–8 ms release delay ensure clean system boot sequencing. |
| Non-wettable flank package | Enables automated optical inspection of solder joints on 3-mm × 3-mm WSON - critical for zero-defect automotive manufacturing. |
| Internal compensation | Reduces BOM count by removing external compensation network; supports wide range of output capacitors (22–100 µF ceramic). |
Applications
| Automotive Camera Power Supply | ADAS Domain Controller Rail |
|---|---|
Use Scenario: Powers 3.3-V or 5-V image sensor, ISP, and serializer in front/rear-view camera modules. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable, low-noise power with fast transient response to handle burst pixel readout currents. Use Value: 23-µA IQ extends parking-mode runtime; 2.1-MHz switching minimizes inductor size in space-constrained camera housings. |
Use Scenario: Supplies auxiliary 3.3-V rail for CAN FD transceivers, watchdog timers, and low-power MCU cores in ADAS ECUs. IC Role / Device Role / Timing Role: Secondary regulated rail with RESET signaling to coordinate safe boot and fault recovery across distributed domain controllers. Use Value: Integrated RESET with programmable delay replaces discrete supervisor, reducing component count and PCB area by ≥30%. |
| Automotive Body Control Module | In-Cabin Driver Monitoring System |
Use Scenario: Provides 5-V power to LIN transceivers, LED drivers, and door module MCUs in BCMs. IC Role / Device Role / Timing Role: High-input-voltage buck converter handling cold-crank (3.55 V) and load-dump (42 V) events without external protection. Use Value: 36-V max rating and 42-V transient tolerance eliminate need for TVS/clamp circuits - lowering BOM cost and failure points. |
Use Scenario: Powers IR illuminators and NIR image sensors in driver attention monitoring systems requiring ultra-low standby current. IC Role / Device Role / Timing Role: Always-on power stage operating in AUTO mode with diode emulation to maintain <25-µA system IQ during cabin sleep states. Use Value: Seamless PWM-to-PFM transition ensures >85% efficiency at 100-µA loads - extending battery backup duration during ignition-off periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM53601MQUDSXRQ1 | Same package, non-wettable flanks, and spread-spectrum feature; rated for 1-A output (vs. 650 mA). | Supports higher-current loads like multi-lane MIPI CSI-2 interfaces or dual-sensor camera stacks. | Select when >650 mA output current is required; otherwise LM53600MQUDSXRQ1 offers optimal cost/performance for single-sensor designs. |
| TPS543320RGERQ1 | 4-A, 2.2-MHz buck with PMBus interface; larger 3.5-mm × 3.5-mm VQFN; no spread spectrum; higher IQ (45 µA). | Used in high-density domain controllers needing digital telemetry, margining, and multi-rail coordination. | Choose only if digital control, higher current, or rail sequencing is required; LM53600MQUDSXRQ1 is simpler and lower-cost for fixed-function camera rails. |
Compared with LM53601MQUDSXRQ1, the LM53600MQUDSXRQ1 trades output current for smaller solution size and lower cost in 650-mA applications; versus TPS543320RGERQ1, it sacrifices configurability and current capability for minimal BOM count and proven automotive qualification at lower system complexity.
Availability
LM53600MQUDSXRQ1 is available at Aetrix Electronics and suitable for automotive camera power supplies, ADAS domain controller auxiliary rails, and body electronics requiring stable component supply with AEC-Q100 compliance and long-term production continuity.
Supply support for LM53600MQUDSXRQ1 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.
The LM53600-Q1 product line was designed specifically for cost-sensitive, space-constrained automotive subsystems requiring high reliability, low IQ, and simplified design - especially camera, sensor, and body-control applications.
FAQ
What is the maximum junction temperature rating for LM53600MQUDSXRQ1?
The LM53600MQUDSXRQ1 is rated for a junction temperature range of –40°C to 150°C, with AEC-Q100 qualification to Grade 1 (–40°C to +125°C ambient). Thermal shutdown activates at 151–185°C rising threshold, with 10°C hysteresis, ensuring robust operation in under-hood environments where LM53600MQUDSXRQ1 is commonly deployed.
Does LM53600MQUDSXRQ1 support external frequency synchronization?
Yes, LM53600MQUDSXRQ1 supports external synchronization via the SYNC/MODE pin, accepting clock inputs from 1.9 MHz to 2.3 MHz. When driven with a valid signal, the device switches in forced PWM mode at the external frequency and synchronizes on the rising edge - enabling EMI reduction through coordinated switching in multi-rail systems using LM53600MQUDSXRQ1.
What output voltage options are available for LM53600MQUDSXRQ1?
LM53600MQUDSXRQ1 is an adjustable-output variant, configured via external resistor divider on the FB pin to set output voltages from 3.3 V to 6 V. It does not integrate fixed 3.3-V or 5-V feedback networks; those are implemented in separate part numbers (e.g., LM536003QDSXRQ1, LM536005QDSXRQ1). The LM53600MQUDSXRQ1 datasheet specifies ±2% output accuracy over load and temperature.
How does the spread-spectrum feature function in LM53600MQUDSXRQ1?
The LM53600MQUDSXRQ1 implements spread-spectrum modulation by dithering its 2.1-MHz switching frequency ±4% at a 30-Hz rate. This reduces peak radiated emissions without altering average frequency or efficiency - a key advantage for LM53600MQUDSXRQ1 in automotive camera modules where CISPR 25 Class 5 compliance is mandatory and board space limits filter component size.
What is the purpose of the non-wettable flanks on the LM53600MQUDSXRQ1 package?
The non-wettable flanks on the LM53600MQUDSXRQ1's WSON-10 package prevent solder wicking up the side walls during reflow, enabling reliable automated optical inspection (AOI) of solder joint quality. This feature directly supports zero-defect manufacturing requirements for automotive electronics, distinguishing LM53600MQUDSXRQ1 from wettable-flank variants used in less stringent applications.
LM53600MQUDSXRQ1 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):
- 3.55V
- 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)
LM53600MQUDSXRQ1 FAQ
1.How can I place an order for LM53600MQUDSXRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM53600MQUDSXRQ1 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 LM53600MQUDSXRQ1 reliable?
The price and inventory of LM53600MQUDSXRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM53600MQUDSXRQ1 is usually 5 days.
3.What payment methods are accepted for LM53600MQUDSXRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM53600MQUDSXRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM53600MQUDSXRQ1?
LM53600MQUDSXRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM53600MQUDSXRQ1 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 LM53600MQUDSXRQ1?
For technical support, including LM53600MQUDSXRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM53600MQUDSXRQ1 requirements.
6.How does Aetrix verify that LM53600MQUDSXRQ1 is sourced from the original manufacturer or authorized distributors?
All LM53600MQUDSXRQ1 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 LM53600MQUDSXRQ1 meets industry standards.
7.What is the process for return or replacement of LM53600MQUDSXRQ1?
All LM53600MQUDSXRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM53600MQUDSXRQ1, 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 LM53600MQUDSXRQ1 part is unused and in its original packaging.
Return procedure for LM53600MQUDSXRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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