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Texas Instruments LM63610DQPWPRQ1
- Part No.:
- LM63610DQPWPRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM63610DQPWPRQ1.pdf
- Description:
- IC REG BUCK ADJ 1A 16HTSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM63610DQPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering up to 1A output current across 3.5V–36V input range, featuring 50ns minimum on-time, 23µA quiescent current, and pin-selectable 3.3V/5V/adjustable output - deployed in infotainment power rails, ADAS camera modules, and body control units.
For engineers reviewing the LM63610DQPWPRQ1 datasheet, LM63610DQPWPRQ1 pinout, LM63610DQPWPRQ1 application, or LM63610DQPWPRQ1 equivalent, key selection criteria include automotive-grade thermal robustness (–40°C to +150°C junction), spread-spectrum EMI reduction compliant with CISPR 25, precision enable thresholds (±25mV), and HTSSOP-16 PowerPAD™ package for high-power-density PCB layouts.
Technical Context
The LM63610DQPWPRQ1 implements peak-current-mode control with automatic PFM/PWM mode transition: PWM at full load for tight regulation, diode-emulation PFM at light load to maintain >85% efficiency down to 1mA. Its internal 1V reference and integrated feedback divider eliminate external compensation components.
Functional safety support includes documented failure modes, FIT rate data, and diagnostic coverage analysis for ISO 26262 ASIL-B systems. Protection features comprise cycle-by-cycle current limiting (2.25A typ), hiccup-mode short-circuit response (70–140ms retry), thermal shutdown (163°C typ), and input UVLO with hysteresis (0.9V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports cold-crank (4.5V) and load-dump (36V) transients in 12V automotive systems |
| Output Current | 1A continuous - sufficient for powering microcontrollers, sensors, and CAN transceivers in ADAS ECUs |
| Quiescent Current | 23µA - enables always-on subsystems (e.g., door module wake-up logic) without battery drain |
| Switching Frequency | 400kHz / 2.1MHz / adjustable 250–2200kHz - allows layout optimization: low freq for EMI filtering, high freq for compact inductor size |
| Min On-Time | 50ns - enables high step-down ratios (e.g., 24V→3.3V @ 2.1MHz) without pulse-skipping instability |
| Output Accuracy | ±1.5% over temp/load - ensures stable voltage for ADC references and PLLs in infotainment SoCs |
| Thermal Shutdown | 163°C typical - protects against sustained overload in sealed enclosures (e.g., headlight control units) |
Pinout & Package
LM63610DQPWPRQ1 uses the HTSSOP-16 (PWP) thermally enhanced package (5.00mm × 6.4mm) with exposed PowerPAD™ for low RθJC (4.5°C/W) and reliable 1A operation under 85°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 SW | Power switch node | Connects directly to inductor; requires low-inductance layout to minimize switching losses and EMI |
| 3 CBOOT | Bootstrap supply | Drives high-side MOSFET gate; requires 220nF X7R ceramic capacitor placed adjacent to SW and CBOOT pins |
| 4 VCC | Internal LDO output | 5V regulated supply for control circuitry; must be decoupled with 1µF capacitor to PGND - not for external loads |
| 5 RT | Frequency programming | Tie to VCC (400kHz), AGND (2.1MHz), or resistor (250–2200kHz); floating disables switching |
| 6 VSEL | Output voltage select | Tie to VCC (5V), AGND (3.3V), or 10kΩ to AGND (adjustable 1–20V); setting fixed at power-on |
| 7 SYNC/MODE | Mode control | Tie to VCC (FPWM), AGND (AUTO), or external clock (250–2200kHz sync); internal 100kΩ pulldown if floating |
| 8 RESET | Open-drain power-good | Asserts low when VOUT deviates >7% from target; requires external pullup for MCU reset sequencing |
| 9 FB | Feedback input | Regulates to 1V (ADJ), 3.3V, or 5V; connects to output cap (fixed) or divider tap (ADJ); leakage <100nA |
| 10 AGND | Analog ground | Reference for FB, EN, and internal circuits; separate from PGND to avoid noise coupling into feedback path |
| 11 EN | Enable input | Precision thresholds: 1.5V ±25mV turn-on, 0.94V turn-off; supports external UVLO via resistor divider |
| 12,13 VIN | Main input supply | Accepts 3.5–36V; requires local 10µF ceramic + bulk electrolytic; connect bypass caps directly to PGND |
| 14 NC | No connection | Unbonded pad - leave unconnected and unpopulated on PCB |
| 15,16 PGND | Power ground | High-current return for SW and VIN; tie to AGND and DAP via multiple vias under PowerPAD™ |
| 17 DAP | Thermal pad | Exposed copper on bottom; must be soldered to large PCB ground plane for thermal conduction and EMI shielding |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive cabin and engine-bay temperature requirements |
| Pseudo-random spread spectrum | ±5% frequency dither at 0.98Hz - reduces peak radiated emissions by 10dB in FM band (76–108MHz) per CISPR 25 Class 5 |
| Pin-selectable output voltage | Hardware-configured 3.3V/5V/adjustable - eliminates firmware dependency and enables field-replaceable variants |
| Integrated 1V reference & feedback divider | Removes external resistors and compensation network - cuts BOM count by 3–5 parts and improves light-load accuracy |
| Thermally enhanced HTSSOP-16 PowerPAD™ | RθJA = 43.1°C/W on 4-layer board - sustains 1A output at 85°C ambient without heatsink or airflow |
Applications
| Infotainment Power Supply | ADAS Camera Module |
|---|---|
Use Scenario: Powers SoC, DDR memory, and display interface in automotive head unit with 12V battery input. IC Role / Device Role / Timing Role: Primary 5V buck regulator supplying core logic rails; synchronized to system clock to avoid beat frequencies. Use Value: 2.1MHz switching enables <2.2mm × 2.2mm inductor footprint while maintaining >90% efficiency at 500mA load. | Use Scenario: Supplies image sensor, ISP, and MIPI serializer in forward-facing ADAS camera with strict EMI limits. IC Role / Device Role / Timing Role: 3.3V rail generator with spread-spectrum mode active to suppress harmonics near 88MHz FM band. Use Value: 50ns min on-time supports 12V→3.3V conversion at 2.1MHz without duty-cycle limitation or instability. |
| Body Control Unit (BCU) | LED Lighting Driver Bias |
Use Scenario: Provides 5V logic supply for door module MCU and LIN transceiver in harsh under-hood environment. IC Role / Device Role / Timing Role: Always-on regulator with 23µA IQ; precision enable thresholds enable controlled wake-up from sleep mode. Use Value: –40°C to +125°C ambient rating ensures reliable start-up during extreme cold cranking and sustained operation at 95°C under hood. | Use Scenario: Generates bias voltage for constant-current LED driver ICs in adaptive front lighting systems. IC Role / Device Role / Timing Role: Adjustable-output (12V) buck stage feeding downstream LED controller; RT pin set to 250kHz for low EMI near sensitive analog sensors. Use Value: Pin-selectable frequency avoids interference with camera shutter timing signals and radar chirp frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM63615DQPWPRQ1 | 1.5A rated output; identical pinout and feature set; higher RDS(on) (HS: 110mΩ, LS: 75mΩ) | Supports higher-current loads (e.g., multi-core domain controllers); same thermal design but higher I2R loss at 1A | Select when future-proofing for 1.2–1.5A peak loads without PCB redesign |
| TPS62903RTER | 1A, 3V–18V input; 1.8MHz fixed freq; no spread spectrum; smaller 2mm × 2mm WQFN | Targeted at space-constrained non-automotive apps; lacks AEC-Q100, functional safety docs, and 36V input capability | Choose only for cost-sensitive industrial designs where 36V input and automotive qualification are unnecessary |
Compared with LM63615DQPWPRQ1, the LM63610DQPWPRQ1 offers lower conduction loss at 1A load and reduced thermal stress in HTSSOP-16; versus TPS62903RTER, it provides critical automotive compliance, wider input range, and EMI-hardened spread-spectrum operation - making it irreplaceable for safety-critical vehicle systems.
Availability
LM63610DQPWPRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM63610DQPWPRQ1 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 ICs, with decades of automotive qualification expertise and ISO/TS 16949-certified manufacturing.
The LM636xx-Q1 product line delivers high-efficiency, EMI-optimized DC/DC converters specifically engineered for automotive power systems - addressing stringent AEC-Q100, CISPR 25, and functional safety requirements in modern vehicles.
FAQ
What is the maximum input voltage rating for LM63610DQPWPRQ1?
The LM63610DQPWPRQ1 has an absolute maximum input voltage rating of 40V for the HTSSOP-16 package. Its recommended operating input range is 3.5V to 36V, enabling robust operation during automotive load-dump events (ISO 7637-2 Pulse 5a) without external clamping. This rating is validated per AEC-Q100 stress testing protocols and applies only when thermal limits are observed.
Does LM63610DQPWPRQ1 support synchronization to an external clock?
Yes, LM63610DQPWPRQ1 supports external clock synchronization via the SYNC/MODE pin. When driven with a clean CMOS clock signal between 250kHz and 2200kHz, the device locks its internal oscillator to the external source - eliminating beat frequencies in multi-rail systems. The pin accepts 1.5–1.8V logic-high threshold and includes 0.355V hysteresis for noise immunity.
How does the spread-spectrum feature reduce EMI in LM63610DQPWPRQ1?
The LM63610DQPWPRQ1 implements pseudo-random spread spectrum with ±5% frequency modulation at 0.98Hz. This dithers energy across a 5% bandwidth around the nominal switching frequency, reducing peak radiated emissions by up to 10dB in the FM band (76–108MHz) - verified per CISPR 25 Class 5 conducted and radiated emission tests in standard vehicle harness configurations.
What is the purpose of the DAP pin on LM63610DQPWPRQ1?
The DAP (Die Attach Pad) on LM63610DQPWPRQ1 is an exposed thermal pad on the underside of the HTSSOP-16 package. It serves as both electrical ground and primary heat dissipation path, requiring direct solder connection to a large PCB ground plane. Proper DAP soldering achieves RθJC = 4.5°C/W, enabling 1A continuous operation at 85°C ambient without forced airflow.
Can LM63610DQPWPRQ1 operate in forced PWM mode at light loads?
Yes, LM63610DQPWPRQ1 supports forced PWM (FPWM) mode via the SYNC/MODE pin. When tied to VCC, the device maintains constant-frequency PWM operation down to zero load - eliminating audible noise and ensuring predictable EMI profiles. This mode sacrifices light-load efficiency (vs. AUTO mode's PFM) but guarantees stable timing for sensitive peripherals like ADCs and PLLs.
LM63610DQPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- 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):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 20V
- Current - Output:
- 1A
- Frequency - Switching:
- 1.85MHz ~ 2.35MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-HTSSOP
LM63610DQPWPRQ1 FAQ
1.How can I place an order for LM63610DQPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM63610DQPWPRQ1 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 LM63610DQPWPRQ1 reliable?
The price and inventory of LM63610DQPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM63610DQPWPRQ1 is usually 5 days.
3.What payment methods are accepted for LM63610DQPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM63610DQPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM63610DQPWPRQ1?
LM63610DQPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM63610DQPWPRQ1 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 LM63610DQPWPRQ1?
For technical support, including LM63610DQPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM63610DQPWPRQ1 requirements.
6.How does Aetrix verify that LM63610DQPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All LM63610DQPWPRQ1 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 LM63610DQPWPRQ1 meets industry standards.
7.What is the process for return or replacement of LM63610DQPWPRQ1?
All LM63610DQPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM63610DQPWPRQ1, 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 LM63610DQPWPRQ1 part is unused and in its original packaging.
Return procedure for LM63610DQPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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