My Inquiry
My Account
Texas Instruments LM63610DQDRRRQ1
- Part No.:
- LM63610DQDRRRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LM63610DQDRRRQ1.pdf
- Description:
- IC REG BUCK ADJ 1A 12WSON
- Quantity:
- Payment:
- Shipping:
Inventory:11,526
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM63610DQDRRRQ1 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 for infotainment power rails.
For engineers reviewing the LM63610DQDRRRQ1 datasheet, LM63610DQDRRRQ1 pinout, LM63610DQDRRRQ1 application, or LM63610DQDRRRQ1 equivalent, key selection considerations include automotive-grade thermal performance (–40°C to +150°C junction), spread-spectrum EMI reduction compliant with CISPR 25, and FPWM/AUTO/sync mode flexibility for ADAS and body electronics designs.
Technical Context
This synchronous buck regulator uses peak-current-mode control with automatic PFM/PWM transition, enabling high light-load efficiency while maintaining tight regulation. Its internal 5V LDO powers control circuitry, and precision enable thresholds (VEN-H = 1.5V ±75mV) support reliable system sequencing in harsh automotive environments.
The device integrates high-side (93mΩ) and low-side (61mΩ) MOSFETs, supports external synchronization from 250kHz to 2200kHz, and implements hiccup-mode short-circuit protection triggered after 128 consecutive current-limit events with 104ms retry delay.
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/24V automotive systems |
| Output Current | 1A continuous - sufficient for powering microcontrollers, sensors, and display logic in cluster and ADAS ECUs |
| Quiescent Current | 23µA - enables always-on functionality without excessive battery drain during vehicle sleep mode |
| Switching Frequency | Adjustable 250kHz–2200kHz - allows EMI optimization and inductor size trade-offs; default 400kHz/2.1MHz via RT pin |
| Feedback Reference | 1.0V (adjustable mode) - enables precise output setting from 1V to 20V using external resistor divider |
| Thermal Shutdown | 163°C typical - protects against sustained overload or poor heatsinking in sealed enclosures |
| Minimum On-Time | 50ns - supports high VIN-to-VOUT conversion ratios (e.g., 24V→3.3V) without pulse-skipping instability |
Pinout & Package
LM63610DQDRRRQ1 is packaged in a 12-pin WSON (DRR) package measuring 3.00mm × 3.00mm with exposed thermal pad (DAP) for enhanced heat dissipation in space-constrained automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switch node | Connects to power inductor; carries high di/dt switching current - requires short, wide PCB trace and adjacent PGND pour |
| CBOOT | Bootstrap supply | Supplies gate drive for high-side MOSFET; requires 220nF ceramic capacitor between CBOOT and SW |
| VCC | Internal LDO output | 5V regulated supply for internal logic; must be decoupled with 1µF capacitor to PGND - not for external loads |
| RT | Frequency programming | Selects switching frequency: tie to VCC (400kHz), AGND (2.1MHz), or resistor to AGND (250–2200kHz) |
| VSEL | Output voltage select | Configures fixed 3.3V (AGND), 5V (VCC), or adjustable (10kΩ to AGND); setting latched at power-up |
| SYNC/MODE | Mode control | FPWM (VCC), AUTO (AGND), or external sync clock - enables noise-sensitive timing coordination |
| RESET | Power-good flag | Open-drain output indicating valid VOUT; active-low with 112% rising threshold and 93% falling threshold |
| FB | Feedback input | Regulates to 1.0V (ADJ), 3.3V, or 5V; connects to output or external divider - never float or ground |
| EN | Enable input | Precision enable with 1.5V ±75mV turn-on threshold; supports external UVLO via resistor divider |
| VIN | Main input supply | Accepts 3.5–36V; requires local high-quality bypass capacitors directly to PGND |
| PGND | Power ground | High-current return path for MOSFETs and inductor; connect to system ground with short, wide traces |
| DAP | Thermal pad | Exposed copper pad soldered to PCB ground plane - essential for thermal performance and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Pseudo-random spread spectrum | ±5% frequency dither at 0.98Hz - reduces peak radiated emissions to meet CISPR 25 Class 5 requirements |
| Automatic frequency foldback | Reduces switching frequency under light load - maintains >85% efficiency at 1mA output while minimizing audible noise |
| Integrated compensation | Eliminates external compensation network - reduces BOM count and layout sensitivity for faster design validation |
| Hiccup short-circuit protection | Enters 104ms recovery delay after 128 overcurrent cycles - prevents thermal runaway during sustained fault conditions |
| Thermally enhanced WSON | 47.4°C/W junction-to-ambient (RθJA) - enables 1A operation in 70°C ambient without forced airflow |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers SoC, display interface, and audio codec in head-unit with variable load from standby to full operation. IC Role / Device Role / Timing Role: Primary 5V/3.3V point-of-load regulator with RESET signal for safe boot sequencing and brown-out detection. Use Value: 23µA quiescent current extends battery life during vehicle sleep; spread spectrum minimizes interference with AM/FM radio reception. | Use Scenario: Supplies image sensor, ISP, and SerDes in rear-view or surround-view camera ECU exposed to engine bay temperatures. IC Role / Device Role / Timing Role: High-reliability 3.3V rail generator with thermal shutdown at 163°C and AEC-Q100 Grade 1 qualification. Use Value: 50ns minimum on-time supports 12V→3.3V conversion during cold-crank; WSON package withstands mechanical shock and vibration. |
| Body Control Module (BCM) Core Rail | Automotive Lighting Driver Bias |
Use Scenario: Provides stable 5V core supply for microcontroller, CAN transceiver, and I/O drivers in door module or seat controller. IC Role / Device Role / Timing Role: Main system regulator with precision enable for wake-on-CAN and controlled power-up sequence. Use Value: VEN-H = 1.5V ±75mV enables accurate UVLO setting; FPWM mode ensures constant frequency for EMC filter design. | Use Scenario: Generates bias voltage for LED driver ICs in adaptive front lighting systems (AFS) requiring stable dimming control. IC Role / Device Role / Timing Role: Adjustable-output (1–20V) pre-regulator feeding linear or buck-boost LED controllers. Use Value: Pin-selectable VSEL and RT allow factory configuration of multiple lighting variants on same PCB; 1V FB reference enables <1% output tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM63615DQDRRRQ1 | 1.5A rated output current; identical pinout and feature set; higher RDS-ON (HS: 75mΩ, LS: 48mΩ) | Suitable for higher-power infotainment processors or multi-rail BCMs requiring >1A per rail | Select when load current exceeds 1A but board layout and control features must remain unchanged |
| TPS543B20RVLQ1 | 3A output; integrated FETs with lower RDS-ON (HS: 12mΩ, LS: 7mΩ); requires external compensation | Better suited for high-efficiency, high-current ADAS domain controllers where thermal margin is critical | Choose when efficiency >92% at 2A and junction temperature <130°C are required; accepts added design complexity |
Compared with LM63610DQDRRRQ1, LM63615DQDRRRQ1 offers +0.5A headroom with identical footprint and control interface, while TPS543B20RVLQ1 trades pin compatibility for significantly lower conduction loss and higher current capability - making it appropriate for thermally constrained 2–3A applications where layout redesign is acceptable.
Availability
LM63610DQDRRRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control units requiring stable component supply with AEC-Q100 qualification and long-term production continuity.
Supply support for LM63610DQDRRRQ1 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 LM636xx-Q1 product line delivers robust, easy-to-use DC/DC converters for automotive subsystems demanding high reliability, low EMI, and extended temperature operation - targeting infotainment, ADAS, and body electronics.
FAQ
What is the maximum allowable input voltage for LM63610DQDRRRQ1 in WSON package?
The absolute maximum input voltage for LM63610DQDRRRQ1 in the DRR (WSON) package is 42V, as specified in Section 6.1 Absolute Maximum Ratings. This rating applies to transient conditions lasting less than 10ns; for continuous operation, the recommended maximum is 36V. Exceeding 42V risks permanent damage to the internal high-side MOSFET and bootstrap circuitry, even if duration is brief.
Does LM63610DQDRRRQ1 support external synchronization, and what is its valid frequency range?
Yes, LM63610DQDRRRQ1 supports external synchronization via the SYNC/MODE pin, with a valid input frequency range of 250kHz to 2200kHz. The device locks to the external clock within this band and maintains phase alignment. Synchronization is only active in FPWM mode; in AUTO mode, the device reverts to internal oscillator control when sync signal is lost.
How does the RESET pin on LM63610DQDRRRQ1 behave during startup and fault conditions?
The RESET pin on LM63610DQDRRRQ1 is an open-drain output that pulls low until FB voltage reaches 112% of target (rising threshold), then releases high after a 3ms deglitch delay. It asserts low again if FB falls below 93% (falling threshold). During EN = low or thermal shutdown, RESET is actively pulled low - providing unambiguous power-good status for microcontroller reset sequencing.
Can LM63610DQDRRRQ1 operate in forced PWM mode across its entire load range, and how is it enabled?
Yes, LM63610DQDRRRQ1 can operate in forced PWM (FPWM) mode from zero load to full 1A by tying the SYNC/MODE pin to VCC. In FPWM mode, the device maintains constant switching frequency regardless of load, eliminating frequency modulation artifacts and ensuring predictable EMI behavior - critical for noise-sensitive applications like radar and camera interfaces.
What is the purpose of the DAP thermal pad on the LM63610DQDRRRQ1 WSON package, and how must it be implemented?
The DAP (Die Attach Pad) on LM63610DQDRRRQ1 is an exposed copper thermal pad electrically connected to PGND and serving as primary heat dissipation path. It must be soldered to a solid PCB ground plane with ≥6 thermal vias (0.3mm diameter, spaced ≤1mm apart) connecting to inner ground layers. Omitting DAP connection degrades RθJA by >30% and risks thermal shutdown above 600mA at 85°C ambient.
LM63610DQDRRRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-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):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 20V
- Current - Output:
- 1A
- Frequency - Switching:
- 400kHz, 2.1MHz, 250kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 12-WSON (3x3)
LM63610DQDRRRQ1 FAQ
1.How can I place an order for LM63610DQDRRRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM63610DQDRRRQ1 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 LM63610DQDRRRQ1 reliable?
The price and inventory of LM63610DQDRRRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM63610DQDRRRQ1 is usually 5 days.
3.What payment methods are accepted for LM63610DQDRRRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM63610DQDRRRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM63610DQDRRRQ1?
LM63610DQDRRRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM63610DQDRRRQ1 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 LM63610DQDRRRQ1?
For technical support, including LM63610DQDRRRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM63610DQDRRRQ1 requirements.
6.How does Aetrix verify that LM63610DQDRRRQ1 is sourced from the original manufacturer or authorized distributors?
All LM63610DQDRRRQ1 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 LM63610DQDRRRQ1 meets industry standards.
7.What is the process for return or replacement of LM63610DQDRRRQ1?
All LM63610DQDRRRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM63610DQDRRRQ1, 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 LM63610DQDRRRQ1 part is unused and in its original packaging.
Return procedure for LM63610DQDRRRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM63610DQDRRRQ1 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
