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Texas Instruments LM53600NQDSXRQ1
- Part No.:
- LM53600NQDSXRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM53600NQDSXRQ1.pdf
- Description:
- IC REG BUCK 3.3V 650MA 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,996
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Product details
Overview
LM53600NQDSXRQ1 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 650 mA, operating from 3.55 V to 36 V input with transient tolerance to 42 V, featuring 2.1-MHz fixed switching frequency, spread spectrum modulation, and integrated RESET with delay filtering - deployed in automotive camera modules requiring compact, low-noise, high-reliability power conversion.
For engineers reviewing the LM53600NQDSXRQ1 datasheet, LM53600NQDSXRQ1 pinout, LM53600NQDSXRQ1 application, or LM53600NQDSXRQ1 equivalent, key selection considerations include its 3.3-V fixed output, wettable-flank WSON-10 package, 23-µA quiescent current, AEC-Q100 qualification (–40°C to 125°C ambient), and spread-spectrum-enabled EMI reduction in safety-critical automotive domains.
Technical Context
The LM53600NQDSXRQ1 implements peak current mode control with internal compensation, enabling stable regulation across wide input voltage (3.55–36 V) and load (0–650 mA) ranges while maintaining 2.1-MHz switching. Its architecture supports seamless PWM/PFM transitions and diode emulation in AUTO mode via SYNC/MODE pin control.
It integrates a 3-V internal LDO for biasing, open-drain RESET with 4–8 ms delay and ±3% hysteresis relative to output, thermal shutdown at 151–185°C, and spread-spectrum modulation with ±4% frequency deviation at 30 Hz to reduce conducted EMI - all within a 3-mm × 3-mm WSON package with exposed thermal pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% over load/temperature - ensures stable supply for image sensors and SerDes interfaces without external feedback resistors. |
| Max Output Current | 650 mA continuous - sufficient for dual-lane MIPI CSI-2 camera modules with integrated ISP power rails. |
| Input Voltage Range | 3.55 V to 36 V (transient to 42 V/100 ms) - accommodates cold-crank, load-dump, and stop-start battery conditions in automotive body/camera systems. |
| Quiescent Current | 23 µA typical - enables always-on operation in parking-mode camera systems without excessive battery drain. |
| Switching Frequency | 2.1 MHz ±10% with ±4% spread spectrum - places fundamental and harmonics above AM band (1.6–3 MHz), minimizing EMI filter size and cost. |
| Package | 10-pin WSON (3 mm × 3 mm) with wettable flanks - supports automated optical inspection (AOI) and improves solder joint reliability in automotive reflow profiles. |
| RESET Function | Open-drain output with 4–8 ms delay, 92–97% UVLO and 105–110% OVLO thresholds - provides system-level power-good signaling without external supervisor IC. |
Pinout & Package
LM53600NQDSXRQ1 uses a 10-pin WSON package (3.00 mm × 3.00 mm) with exposed thermal pad (DAP) connected to GND for enhanced thermal dissipation. The wettable flank design enables reliable solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Connects to inductor; carries high-frequency AC current - requires tight layout to minimize EMI and voltage spikes. |
| 2 BOOT | High-side gate driver supply | Supplies floating voltage for HS MOSFET gate; requires 100-nF ceramic capacitor between BOOT and SW. |
| 3 VCC | Internal 3-V regulator output | Bias supply for control circuitry; requires 1-µF capacitor to AGND (fixed-output version). |
| 4 FB | Feedback input | Direct connection to 3.3-V output; senses regulated voltage - no external divider needed for fixed-output variant. |
| 5 AGND | Analog ground reference | Ground return for FB and internal analog circuits - must be star-connected to minimize noise coupling. |
| 6 RESET | Open-drain reset output | Asserts low on fault or EN deactivation; requires external pull-up - replaces discrete reset supervisor in camera BOM. |
| 7 EN | Enable input | Active-high logic control; threshold 1.7–2.0 V with 0.4–0.55 V hysteresis - supports direct connection to microcontroller GPIO. |
| 8 VIN | Main input supply | Accepts 3.55–36 V; requires local 10-µF ceramic bypass capacitor placed adjacent to pin. |
| 9 SYNC/MODE | Mode selection & sync input | Pull-low for AUTO mode (PFM/PWM transition); pull-high for forced PWM; accepts 1.9–2.3 MHz external clock - enables EMI synchronization. |
| 10 GND | Power ground | Primary ground return for power path; connects to DAP - must be solidly tied to PCB ground plane under device. |
| DAP | Thermal pad | Exposed copper pad for heat conduction; electrically connected to GND only - requires ≥6 thermal vias to inner ground layers. |
Key Features
| Feature | Design Value |
|---|---|
| Spread spectrum modulation | ±4% frequency dither at 30 Hz - reduces peak EMI by >10 dB in 150 kHz–30 MHz range, easing CISPR 25 Class 5 compliance. |
| Integrated RESET with delay | 4–8 ms release delay and ±3% hysteresis - eliminates need for external RC timing network and supervisory IC in camera power sequencing. |
| Low IQ and shutdown current | 23 µA operating / 1.8 µA shutdown - enables <10 µA system standby current when paired with low-power MCU in ADAS vision nodes. |
| Wide VIN with transient robustness | 3.55 V startup / 42 V transient tolerance - supports direct battery connection in automotive camera ECUs without pre-regulator or TVS front-end. |
| Wettable-flank WSON package | 10-pin 3 mm × 3 mm with solderable side walls - enables AOI-compatible assembly and improves field reliability in vibration-prone automotive environments. |
Applications
| Automotive Camera Modules | ADAS Front/Rear View Systems |
|---|---|
|
Use Scenario: Powering CMOS image sensor, ISP, and MIPI transmitter in compact rear-view camera housing exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Primary 3.3-V power rail regulator with integrated RESET for sensor initialization and fault reporting. Use Value: Eliminates external supervisor and reduces board area by 25% versus discrete LDO + reset IC solution while meeting AEC-Q100 Grade 1 requirements. |
Use Scenario: Supplying 3.3-V rail to radar preprocessing unit and camera fusion controller in forward collision warning ECU. IC Role / Device Role / Timing Role: High-efficiency buck converter with spread spectrum to coexist with RF-sensitive radar receivers. Use Value: 2.1-MHz switching avoids AM band interference; 23-µA IQ extends battery life during vehicle sleep mode without compromising wake-up latency. |
| Automotive Body Control Units | In-Cabin Driver Monitoring Systems |
|
Use Scenario: Providing regulated 3.3-V supply to LIN transceivers, LED drivers, and environmental sensors in door module ECUs. IC Role / Device Role / Timing Role: Robust DC/DC converter handling load-dump transients up to 42 V and cold-crank down to 3.55 V. Use Value: Input range and AEC-Q100 qualification eliminate need for external surge protection, reducing BOM count and validation effort. |
Use Scenario: Powering near-infrared (NIR) illuminator and IR camera in driver attention monitoring system mounted on dashboard. IC Role / Device Role / Timing Role: Low-noise, low-IQ regulator supporting always-on imaging during vehicle ignition-off state. Use Value: 1.8-µA shutdown current enables >1-year battery backup operation; wettable-flank package ensures long-term solder joint integrity under thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM53601NQDSXRQ1 | 1-A output capability, identical 3.3-V fixed output, same spread spectrum and pinout - higher current headroom but larger thermal footprint. | Suitable for camera modules with additional peripherals (e.g., flash LED drivers) requiring >650 mA total load. | Select LM53601NQDSXRQ1 only if peak load exceeds 650 mA; otherwise LM53600NQDSXRQ1 offers better thermal efficiency at typical camera loads. |
| TPS62903-Q1 | 3.3-V fixed output, 1-A rating, 2.25-MHz switching, lower 15-µA IQ, but no integrated RESET or spread spectrum - requires external supervisor. | Better suited for space-constrained ADAS domain controllers where ultra-low IQ dominates over EMI performance. | Choose TPS62903-Q1 when minimizing standby power is critical and EMI filtering can be handled at system level; LM53600NQDSXRQ1 integrates more functions for simpler camera BOM. |
Compared with LM53601NQDSXRQ1 and TPS62903-Q1, LM53600NQDSXRQ1 uniquely balances 650-mA capability, integrated RESET, spread-spectrum EMI suppression, and wettable-flank packaging - making it optimal for cost-sensitive, volume automotive camera applications where functional integration and manufacturability are prioritized.
Availability
LM53600NQDSXRQ1 is available at Aetrix Electronics and suitable for automotive camera modules, ADAS vision processors, and body control units requiring stable component supply with AEC-Q100 compliance, extended temperature support, and production-ready packaging.
Supply support for LM53600NQDSXRQ1 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 rigorous AEC-Q100 qualification processes.
LM53600NQDSXRQ1 belongs to TI's automotive synchronous buck regulator product line, designed specifically for camera, ADAS, and body electronics applications demanding high reliability, low EMI, and simplified power design in harsh automotive environments.
FAQ
What is the maximum junction temperature rating for LM53600NQDSXRQ1?
The LM53600NQDSXRQ1 is rated for operation up to 150°C junction temperature, with AEC-Q100 qualification covering –40°C to 125°C ambient. Thermal shutdown activates at 151–185°C rising threshold, ensuring safe operation under sustained overload or poor heatsinking conditions. This specification makes LM53600NQDSXRQ1 suitable for under-hood camera modules where ambient temperatures exceed 105°C.
Does LM53600NQDSXRQ1 require external compensation components?
No, LM53600NQDSXRQ1 features fully internal compensation - no external RC network is needed for stability. Its peak current mode control architecture with integrated error amplifier and compensation network allows stable operation with standard output capacitors (e.g., 22-µF X5R ceramic) and inductors (1.5–2.2 µH), significantly simplifying layout and reducing bill-of-materials cost compared to externally compensated regulators.
How does the spread spectrum feature of LM53600NQDSXRQ1 improve EMI performance?
LM53600NQDSXRQ1 modulates its 2.1-MHz switching frequency by ±4% at 30 Hz, spreading energy across a 168-kHz bandwidth instead of concentrating it at discrete harmonics. This reduces peak radiated emissions by up to 10 dB in the 150 kHz–30 MHz range, easing compliance with CISPR 25 Class 5 limits for automotive electronics without requiring bulky ferrite beads or shielded inductors - a key advantage in space-constrained camera modules.
Can LM53600NQDSXRQ1 operate with input voltage below 3.8 V?
Yes, LM53600NQDSXRQ1 supports startup down to 3.55 V after initial turn-on, and maintains regulation at 3.8 V minimum input for full 650-mA load. This extended low-input capability enables reliable operation during automotive cold-crank events (e.g., battery sag to 6 V) and supports direct connection to 12-V battery rails without pre-regulation - verified per Section 7.6 of the datasheet under Vin_min test conditions.
What is the function of the DAP (exposed pad) on LM53600NQDSXRQ1?
The DAP on LM53600NQDSXRQ1 is a thermally optimized exposed copper pad electrically connected to GND, not a signal terminal. It must be soldered to a solid PCB ground plane using ≥6 thermal vias to achieve the specified RθJB of 20.9°C/W. Proper DAP connection reduces junction-to-board thermal resistance by >50%, preventing thermal derating and enabling full 650-mA output current in automotive ambient temperatures up to 125°C.
LM53600NQDSXRQ1 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:
- 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)
LM53600NQDSXRQ1 FAQ
1.How can I place an order for LM53600NQDSXRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM53600NQDSXRQ1 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 LM53600NQDSXRQ1 reliable?
The price and inventory of LM53600NQDSXRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM53600NQDSXRQ1 is usually 5 days.
3.What payment methods are accepted for LM53600NQDSXRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM53600NQDSXRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM53600NQDSXRQ1?
LM53600NQDSXRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM53600NQDSXRQ1 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 LM53600NQDSXRQ1?
For technical support, including LM53600NQDSXRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM53600NQDSXRQ1 requirements.
6.How does Aetrix verify that LM53600NQDSXRQ1 is sourced from the original manufacturer or authorized distributors?
All LM53600NQDSXRQ1 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 LM53600NQDSXRQ1 meets industry standards.
7.What is the process for return or replacement of LM53600NQDSXRQ1?
All LM53600NQDSXRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM53600NQDSXRQ1, 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 LM53600NQDSXRQ1 part is unused and in its original packaging.
Return procedure for LM53600NQDSXRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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