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Texas Instruments LM53600LQDSXRQ1
- Part No.:
- LM53600LQDSXRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM53600LQDSXRQ1.pdf
- Description:
- IC REG BUCK 5V 650MA 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,023
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Product details
Overview
LM53600LQDSXRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering a fixed 5-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, 23-µA quiescent current, and spread-spectrum EMI reduction - deployed in automotive camera power rails.
For engineers reviewing the LM53600LQDSXRQ1 datasheet, LM53600LQDSXRQ1 pinout, LM53600LQDSXRQ1 application, or LM53600LQDSXRQ1 equivalent, key selection criteria include its 5-V fixed output, wettable-flank WSON-10 package, AEC-Q100 qualification, RESET output with delay filtering, and pin-selectable forced PWM mode for deterministic timing in ADAS subsystems.
Technical Context
The LM53600LQDSXRQ1 implements peak current-mode control with internal compensation, enabling stable regulation across wide input (3.55–36 V) and load (0–650 mA) ranges while maintaining 2.1-MHz switching. Its architecture supports seamless PWM/PFM transitions and achieves regulation down to 3.8 V input for 5-V output.
It integrates a 3-V internal LDO for biasing, open-drain RESET with 4–8 ms delay and ±3% hysteresis relative to output, and SYNC/MODE pin enabling external clock synchronization (1.9–2.3 MHz), forced PWM, or AUTO mode with diode emulation - all within a –40°C to 150°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 5.0 V ±1.5% over full temperature and load range - ensures stable MCU/peripheral supply without external feedback resistors. |
| Max output current | 650 mA continuous - sufficient for image sensor, ISP, and interface logic in automotive cameras. |
| Input voltage range | 3.55 V to 36 V (transient to 42 V/100 ms) - accommodates cold-crank, load-dump, and 12-V/24-V vehicle architectures. |
| Quiescent current | 23 µA typical - enables always-on operation in low-power camera wake-up circuits without battery drain. |
| Switching frequency | 2.1 MHz nominal (±10%) with spread spectrum option - places switching noise above AM band and allows compact 1–2.2-µH inductors. |
| RESET output | Open-drain with 4–8 ms delay, 105–110% upper / 92–97% lower threshold - provides reliable power-good signaling without external supervisor IC. |
| Package | 10-pin WSON (3.0 mm × 3.0 mm) with wettable flanks - supports automated optical inspection (AOI) and high-reliability solder joint formation per automotive standards. |
Pinout & Package
LM53600LQDSXRQ1 uses a 10-pin WSON package (3.0 mm × 3.0 mm) with exposed thermal pad (DAP) requiring direct connection to PCB ground plane for thermal management. Wettable flanks enable solder fillet inspection.
| 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 and voltage spikes. |
| 2 BOOT | High-side gate driver supply | Supplies floating voltage for HS FET gate drive; requires 100-nF ceramic capacitor between BOOT and SW. |
| 3 VCC | Internal 3-V regulator output | Bias supply for control circuitry; requires 1.0-µF capacitor to AGND for stability and noise rejection. |
| 4 FB | Feedback input (fixed 5-V version) | Direct connection to 5-V output; senses regulated voltage and powers internal VCC regulator - no external divider needed. |
| 5 AGND | Analog ground reference | Ground return for FB, EN, and internal analog circuits - must be star-connected near IC to minimize noise coupling. |
| 6 RESET | Open-drain reset output | Asserts low during fault or undervoltage; requires external pull-up resistor - provides system-level power-good status with built-in glitch filtering. |
| 7 EN | Enable input | Active-high logic control (1.7–2.0 V threshold); ties directly to VIN or microcontroller GPIO - enables sequencing and standby mode control. |
| 8 VIN | Main input supply | Accepts 3.55–36 V; requires local 10-µF ceramic bypass capacitor placed adjacent to pin for transient suppression. |
| 9 SYNC/MODE | Multi-function mode control | Configures forced PWM (tie high), AUTO mode (tie low), or external sync (1.9–2.3 MHz); disables spread spectrum when synchronized. |
| 10 GND | Power ground | Primary return path for high-current paths (SW, VIN); must be solidly connected to DAP and AGND via multiple vias. |
| DAP | Exposed thermal pad | Thermal-only connection to PCB ground plane - no electrical function; essential for maintaining ≤150°C junction temperature under full load. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM Class 2 and CDM Class C5 ESD robustness - meets automotive electronics reliability requirements. |
| Spread-spectrum modulation | ±4% frequency dithering at 30 Hz - reduces peak EMI by >10 dB in CISPR 25 Class 5 automotive emissions testing. |
| Integrated RESET with delay | Programmable 4–8 ms assertion delay and 3% hysteresis - eliminates need for discrete supervisor IC, saving BOM cost and board area. |
| Pin-selectable PWM mode | SYNC/MODE pin configures forced PWM (deterministic timing) or AUTO mode (PFM at light load) - balances efficiency vs. noise requirements per system state. |
| Low dropout capability | Regulates 5-V output from as low as 5.5 V input - supports operation during battery brownout conditions without rail collapse. |
Applications
| Automotive Camera Power Supply | ADAS Domain Controller Core Rail |
|---|---|
|
Use Scenario: Powers CMOS image sensor, ISP, and MIPI PHY in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Primary 5-V buck regulator providing clean, low-noise, always-on power with RESET monitoring for sensor initialization. Use Value: 23-µA quiescent current enables parking-mode operation; 2.1-MHz switching avoids AM-band interference; wettable flanks ensure solder joint reliability in vibration-prone mounting locations. |
Use Scenario: Supplies auxiliary 5-V rail for microcontroller peripherals, CAN transceivers, and diagnostics circuitry in centralized ADAS ECUs. IC Role / Device Role / Timing Role: Secondary regulated supply supporting non-critical subsystems with independent power-good signaling via RESET output. Use Value: 36-V max input handles load-dump transients; internal compensation reduces external component count; AEC-Q100 qualification guarantees lifetime reliability in safety-critical domains. |
| Automotive Body Control Module (BCM) | In-Cabin Infotainment Display Backlight Driver Support |
|
Use Scenario: Provides 5-V logic supply for door module MCUs, LIN transceivers, and LED drivers in body electronics. IC Role / Device Role / Timing Role: Compact, high-efficiency buck converter replacing discrete LDOs and linear regulators in space-constrained BCM PCBs. Use Value: 3.0 mm × 3.0 mm WSON package saves >40% board area vs. SOIC-8 alternatives; shutdown current of 1.8 µA minimizes parasitic drain on vehicle battery. |
Use Scenario: Generates stable 5-V bias for display timing controllers and backlight LED driver ICs in digital instrument clusters. IC Role / Device Role / Timing Role: Pre-regulator feeding downstream adjustable buck or boost converters - improves overall system efficiency and thermal margin. Use Value: Spread-spectrum EMI reduction prevents noise coupling into sensitive video signals; 150°C junction rating supports operation behind dashboard in high-ambient environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM53601LQDSXRQ1 | Same 5-V fixed output and spread-spectrum feature, but rated for 1-A max load and higher current-limit thresholds (HS: 1.5–2.1 A vs. 1.0–1.65 A). | Required where peak loads exceed 650 mA (e.g., multi-sensor camera fusion units), otherwise electrically and pin-compatible. | Select LM53601LQDSXRQ1 only if sustained load exceeds 650 mA; identical footprint and control interface simplify upgrade path. |
| TPS62903-Q1 | Lower IQ (1.7 µA), higher efficiency (92% @ 1 A), but fixed 3.3-V/5-V options only, no spread spectrum, and requires external compensation. | Better suited for ultra-low-power always-on nodes where EMI is less critical and layout space allows additional components. | Choose TPS62903-Q1 when minimum IQ or peak efficiency dominates design priorities over EMI compliance and simplicity. |
Compared with LM53601LQDSXRQ1, LM53600LQDSXRQ1 offers lower cost and adequate current for single-camera modules, while TPS62903-Q1 trades integrated features for higher efficiency and lower quiescent draw - making LM53600LQDSXRQ1 optimal for cost-sensitive, EMI-constrained 5-V automotive imaging rails.
Availability
LM53600LQDSXRQ1 is available at Aetrix Electronics and suitable for automotive camera power supplies, ADAS domain controller auxiliary rails, and body control module logic supplies requiring stable component supply with full AEC-Q100 traceability and long-term production support.
Supply support for LM53600LQDSXRQ1 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-compliant design.
The LM53600-Q1 product line delivers compact, high-reliability DC/DC converters optimized for automotive camera, ADAS, and body electronics - emphasizing AEC-Q100 qualification, low EMI, and minimal external component count.
FAQ
What is the maximum input voltage transient rating for LM53600LQDSXRQ1?
The LM53600LQDSXRQ1 supports input transients up to 42 V for durations ≤100 ms at ≤1% duty cycle, enabling robust operation during automotive load-dump events without external protection circuitry. This rating is validated per AEC-Q100 stress test conditions and applies across the full –40°C to +125°C ambient temperature range specified for Grade 1 qualification.
Does LM53600LQDSXRQ1 require external compensation components?
No, LM53600LQDSXRQ1 features fully internal compensation - no external RC network is required for loop stability. This simplifies design, reduces bill-of-materials count, and eliminates tuning effort, while maintaining stable regulation across input voltages from 3.55 V to 36 V and load currents from 0 to 650 mA.
How does the RESET output of LM53600LQDSXRQ1 behave during startup and fault conditions?
The LM53600LQDSXRQ1 RESET output remains low until the output reaches 92–97% of nominal 5 V and remains stable for 4–8 ms, then transitions high. It asserts low again if output drops below 92–97% or EN is deasserted. This built-in delay and hysteresis eliminate need for external reset supervisors in LM53600LQDSXRQ1-based designs.
Can LM53600LQDSXRQ1 operate with input voltage below 3.8 V?
Yes - LM53600LQDSXRQ1 supports startup down to 3.55 V after initial turn-on, and can maintain regulation at 5-V output with input as low as 5.5 V (minimum dropout). Below 3.8 V, operation is limited to light loads and requires verification of UVLO hysteresis and soft-start behavior per Section 7.6 of the LM53600LQDSXRQ1 datasheet.
Is LM53600LQDSXRQ1 pin-compatible with other devices in the LM53600-Q1 family?
Yes - all LM53600-Q1 variants, including LM53600LQDSXRQ1, share identical 10-pin WSON (3 mm × 3 mm) packaging and pinout. Output voltage (3.3 V, 5 V, or adjustable) and spread-spectrum enable/disable are determined by part number, not pin configuration - enabling drop-in replacement across fixed-output variants.
LM53600LQDSXRQ1 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):
- 5V
- 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)
LM53600LQDSXRQ1 FAQ
1.How can I place an order for LM53600LQDSXRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM53600LQDSXRQ1 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 LM53600LQDSXRQ1 reliable?
The price and inventory of LM53600LQDSXRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM53600LQDSXRQ1 is usually 5 days.
3.What payment methods are accepted for LM53600LQDSXRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM53600LQDSXRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM53600LQDSXRQ1?
LM53600LQDSXRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM53600LQDSXRQ1 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 LM53600LQDSXRQ1?
For technical support, including LM53600LQDSXRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM53600LQDSXRQ1 requirements.
6.How does Aetrix verify that LM53600LQDSXRQ1 is sourced from the original manufacturer or authorized distributors?
All LM53600LQDSXRQ1 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 LM53600LQDSXRQ1 meets industry standards.
7.What is the process for return or replacement of LM53600LQDSXRQ1?
All LM53600LQDSXRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM53600LQDSXRQ1, 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 LM53600LQDSXRQ1 part is unused and in its original packaging.
Return procedure for LM53600LQDSXRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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