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Texas Instruments LM53600AQDSXTQ1
- Part No.:
- LM53600AQDSXTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM53600AQDSXTQ1.pdf
- Description:
- IC REG BUCK ADJ 650MA 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,219
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Product details
Overview
LM53600AQDSXTQ1 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; operates from 3.55 V to 36 V input (42 V transient tolerant), features 2.1-MHz fixed switching frequency, 23-µA quiescent current, and integrated RESET with delay and filtering - used in automotive camera power rails.
For engineers reviewing the LM53600AQDSXTQ1 datasheet, LM53600AQDSXTQ1 pinout, LM53600AQDSXTQ1 application, or LM53600AQDSXTQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and ESD specs, and real-world selection guidance for body electronics, ADAS, and camera module designs.
Technical Context
The LM53600AQDSXTQ1 implements peak current mode control with internal compensation, enabling stable regulation across wide VIN (3.55–36 V) and VOUT (adjustable 3.3–6 V, or fixed 3.3/5 V) ranges while maintaining 2.1-MHz switching. Its architecture supports seamless PWM/PFM transitions and diode emulation in AUTO mode via SYNC/MODE pin logic.
It integrates a 3-V internal regulator (VCC), open-drain RESET with 4–8 ms activation delay and 24-µs glitch filtering, and dual current limiting (HS: 1.0–1.65 A, LS: 0.65–0.93 A). Thermal shutdown activates at 151–185°C with 10°C hysteresis, and junction temperature is rated from –40°C to 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 650 mA max - supports full-load operation in automotive camera modules without derating at 125°C ambient. |
| Input Voltage Range | 3.55 V to 36 V - enables direct battery connection (12 V/24 V systems) with 42 V transient tolerance for load-dump survival. |
| Switching Frequency | 2.1 MHz (±10%) - places switching above AM band, reducing EMI filter size and cost in compact PCB layouts. |
| Quiescent Current | 23 µA - sustains low-power sleep modes in always-on automotive systems without auxiliary LDO. |
| RESET Output | Open-drain with 4–8 ms delay and 24-µs filter - replaces external supervisor IC, saving board space and BOM count. |
| Junction Temp Range | –40°C to 150°C - meets AEC-Q100 Grade 1 requirements for under-hood and infotainment applications. |
| Package | 10-pin WSON (3 mm × 3 mm) with wettable flanks - supports automated optical inspection (AOI) and reliable solder joint formation. |
Pinout & Package
LM53600AQDSXTQ1 uses a 10-pin WSON (DSX) package, 3.00 mm × 3.00 mm body, 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 dv/dt switching waveform - requires tight layout with minimal loop area. |
| 2 BOOT | High-side gate driver supply | 100-nF capacitor between SW and BOOT supplies gate drive; critical for MOSFET turn-on reliability. |
| 3 VCC | Internal 3-V regulator output | Powers internal control circuitry; requires 1-µF ceramic cap to AGND (fixed) or GND (adjustable) per layout guidelines. |
| 4 FB | Feedback input (adjustable version) | Connects to voltage divider on output; sets VOUT = 1.0 V × (1 + R1/R2); reference accuracy ±1.5% over temp. |
| 5 BIAS | VCC bias source | Connected directly to output node; supplies VCC regulator - bypass with 10-nF cap adjacent to pin. |
| 6 RESET | Open-drain system status indicator | Asserts low during fault or EN=low; requires external pull-up; delay ensures clean power-good assertion. |
| 7 EN | Enable control input | Active-high; threshold 1.7–2.0 V with 0.4–0.55 V hysteresis - prevents false turn-on during supply ramp. |
| 8 VIN | Main input supply | Accepts 3.55–36 V; UVLO rising threshold 3.2–3.75 V with 0.2–0.35 V hysteresis for robust startup. |
| 9 SYNC/MODE | Multi-function mode control | Tied low = AUTO mode (PFM/PWM transition); tied high = forced PWM; driven externally = sync to 1.9–2.3 MHz clock. |
| 10 GND | Power ground | Primary return path; must be connected adjacent to VIN bypass capacitor - low-inductance path essential. |
| DAP | Exposed thermal pad | Electrically connected to GND only; sole purpose is thermal conduction - must be soldered to solid ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Spread spectrum option | Available on variant LM53600MQDSXTQ1 only - not supported by LM53600AQDSXTQ1; this part has fixed-frequency operation. |
| Pin-selectable PWM mode | SYNC/MODE pin logic selects AUTO (light-load PFM) or forced PWM - enables efficiency vs. noise trade-off tuning. |
| Integrated soft-start | 1.3–4.5 ms ramp time - prevents inrush current and output overshoot during power-up sequences. |
| Internal compensation | Eliminates external compensation network - reduces component count and layout sensitivity for 3.3/5 V or ADJ outputs. |
| AEC-Q100 qualification | Grade 1 (–40°C to 125°C ambient), HBM Class 2 (±2 kV), CDM Class C5 (±750 V) - validated for automotive production use. |
Applications
| Automotive Camera Power Supply | ADAS Domain Controller Rail |
|---|---|
|
Use Scenario: Powers image sensor, ISP, and interface circuitry in rear-view or surround-view cameras exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Primary 3.3-V or 5-V point-of-load regulator with RESET monitoring system health before sensor initialization. Use Value: 23-µA IQ enables always-on wake-on-motion functionality; 150°C junction rating ensures reliability at under-hood mounting locations. |
Use Scenario: Supplies auxiliary 3.3-V rail for CAN transceivers, radar preprocessing units, or sensor fusion SoCs in ADAS ECUs. IC Role / Device Role / Timing Role: Secondary buck regulator synchronized via SYNC/MODE pin to avoid beat frequencies with main processor clocks. Use Value: 2.1-MHz fixed frequency simplifies EMI filtering; 42-V transient tolerance eliminates need for upstream TVS in 24-V truck systems. |
| Automotive Body Control Module | Infotainment Display Backlight Driver Support |
|
Use Scenario: Generates stable 5-V rail for microcontroller, LIN transceivers, and LED drivers in door modules or seat controllers. IC Role / Device Role / Timing Role: Main system power regulator with integrated RESET replacing discrete supervisor IC for cost-sensitive BOMs. Use Value: Open-drain RESET with 4–8 ms delay provides clean power-good signal to MCU - removes timing uncertainty of external supervisors. |
Use Scenario: Provides regulated 3.3-V bias for LED driver ICs and display timing controllers in center-stack displays. IC Role / Device Role / Timing Role: Low-noise, low-IQ intermediate rail generator supporting display sleep/wake cycles without brownout. Use Value: 1.8–2.4 MHz frequency range avoids audible noise in display power stages; wettable flanks ensure AOI-compatible assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM53601AQDSXTQ1 | 1-A output capability (vs. 650 mA), identical pinout and feature set - higher current headroom for future-proofing. | Supports higher-current loads like multi-sensor camera clusters or dual-display interfaces without redesign. | Select when >650 mA peak load is required; same footprint and layout - no PCB change needed. |
| TPS62231DRVRQ1 | 3-MHz switching, 600-mA output, smaller 2-mm × 2-mm WSON - lower IQ (15 µA) but narrower VIN (2.05–6.5 V). | Limited to low-voltage domains (e.g., infotainment core rails); unsuitable for direct battery input or 24-V systems. | Choose only for 3.3/5-V subsystems powered from pre-regulated sources - not a drop-in replacement for battery-fed rails. |
Compared with LM53600AQDSXTQ1, LM53601AQDSXTQ1 offers scalable current capacity in identical packaging, while TPS62231DRVRQ1 trades input voltage range for ultra-low IQ and higher frequency - making it viable only in pre-regulated sub-systems.
Availability
LM53600AQDSXTQ1 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 compliance and long-term lifecycle support.
Supply support for LM53600AQDSXTQ1 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, embedded processing, and automotive-grade power management solutions, with decades of automotive qualification experience.
The LM53600-Q1 product line delivers high-efficiency, low-IQ synchronous buck regulators optimized for harsh automotive environments - designed specifically for camera modules, ADAS sensors, and body electronics where reliability, thermal resilience, and EMI control are critical.
FAQ
What is the maximum output current rating for LM53600AQDSXTQ1?
The LM53600AQDSXTQ1 is rated for a maximum continuous output current of 650 mA. This rating is maintained across the full AEC-Q100 Grade 1 ambient temperature range (–40°C to 125°C) with proper PCB thermal design using the exposed DAP pad. Exceeding 650 mA may trigger current limit or thermal shutdown.
Does LM53600AQDSXTQ1 support spread spectrum operation?
No, LM53600AQDSXTQ1 does not support spread spectrum. It is the non-spread-spectrum variant - identified by "A" in the orderable part number. Spread spectrum is only available on variants with "M", "N", or "L" suffixes (e.g., LM53600MQDSXTQ1). This part uses fixed 2.1-MHz switching for predictable EMI behavior.
What is the function of the BIAS pin on LM53600AQDSXTQ1?
The BIAS pin on LM53600AQDSXTQ1 supplies the internal VCC regulator. It must be connected directly to the output voltage node (e.g., 3.3 V or 5 V) and bypassed with a 10-nF capacitor placed adjacent to the pin. This configuration improves light-load efficiency and stabilizes the internal 3-V rail that powers control circuitry.
Can LM53600AQDSXTQ1 operate with input voltage below 3.8 V?
Yes - LM53600AQDSXTQ1 supports a minimum input voltage of 3.55 V after startup, as confirmed in Section 7.6. However, full functionality (including specified load current and regulation accuracy) at 3.55 V requires VOUT ≤ 3.3 V and IOUT ≤ 500 mA. Startup UVLO rising threshold is 3.2–3.75 V, so initial turn-on may require ≥3.6 V.
Is LM53600AQDSXTQ1 pin-compatible with LM53601AQDSXTQ1?
Yes, LM53600AQDSXTQ1 and LM53601AQDSXTQ1 share identical pinout, package (10-pin WSON), and footprint. The only functional difference is maximum output current (650 mA vs. 1000 mA) and corresponding current limit thresholds. Layout reuse is fully supported - no PCB changes required when upgrading current capability.
LM53600AQDSXTQ1 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)
LM53600AQDSXTQ1 FAQ
1.How can I place an order for LM53600AQDSXTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM53600AQDSXTQ1 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 LM53600AQDSXTQ1 reliable?
The price and inventory of LM53600AQDSXTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM53600AQDSXTQ1 is usually 5 days.
3.What payment methods are accepted for LM53600AQDSXTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM53600AQDSXTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM53600AQDSXTQ1?
LM53600AQDSXTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM53600AQDSXTQ1 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 LM53600AQDSXTQ1?
For technical support, including LM53600AQDSXTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM53600AQDSXTQ1 requirements.
6.How does Aetrix verify that LM53600AQDSXTQ1 is sourced from the original manufacturer or authorized distributors?
All LM53600AQDSXTQ1 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 LM53600AQDSXTQ1 meets industry standards.
7.What is the process for return or replacement of LM53600AQDSXTQ1?
All LM53600AQDSXTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM53600AQDSXTQ1, 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 LM53600AQDSXTQ1 part is unused and in its original packaging.
Return procedure for LM53600AQDSXTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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