My Inquiry
My Account
Texas Instruments LMR23630AQDDARQ1
- Part No.:
- LMR23630AQDDARQ1
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMR23630AQDDARQ1.pdf
- Description:
- IC REG BUCK ADJ 3A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:2,217
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMR23630AQDDARQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified 36-V, 3-A synchronous step-down DC/DC converter in 8-pin HSOIC package, delivering up to 3 A continuous output current with 4–36 V input range, 400 kHz fixed switching frequency, and 75 µA quiescent current in PFM mode - used in automotive infotainment power rails and USB charging modules.
For engineers reviewing the LMR23630AQDDARQ1 datasheet, LMR23630AQDDARQ1 pinout, LMR23630AQDDARQ1 application, or LMR23630AQDDARQ1 equivalent, key selection criteria include its automotive qualification (–40°C to +125°C ambient), internal compensation, 60 ns minimum on-time, FPWM/PPM mode flexibility, and SOIC thermal performance (RθJA = 42.0°C/W).
Technical Context
The LMR23630AQDDARQ1 employs peak-current-mode control with internal loop compensation, eliminating external compensation components and enabling stable operation across wide output capacitor selections. Its fixed 400 kHz switching frequency simplifies EMI filtering and reduces solution size versus adjustable-frequency variants.
It integrates high-side and low-side NMOS power switches (RDS(on) = 185 mΩ / 105 mΩ), supports soft-start into prebiased loads, and features hiccup-mode short-circuit protection, thermal shutdown at 170°C, and precision enable with 1.55 V threshold and 0.4 V hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 36 V - supports direct connection to automotive battery (9–16 V nominal) and industrial 24-V rails without pre-regulation. |
| Output Current | 3 A continuous - sufficient for powering dual-core SoCs, display controllers, or multi-port USB PD sink circuits. |
| Switching Frequency | Fixed 400 kHz - enables compact magnetics design and predictable EMI profile without RT resistor or sync clock routing. |
| IQ (PFM Mode) | 75 µA at no load - extends battery runtime in always-on automotive modules like telematics or CAN gateways. |
| Min. On-Time | 60 ns - supports high step-down ratios (e.g., 24 V → 3.3 V at 400 kHz) without pulse-skipping instability. |
| Thermal Resistance | RθJA = 42.0°C/W (HSOIC) - allows 3-A operation at +85°C ambient with minimal heatsinking on standard 2-layer PCB. |
| UVLO Threshold | 3.7 V rising / 3.3 V falling - prevents erratic startup during cold-crank battery dips below 6 V. |
Pinout & Package
LMR23630AQDDARQ1 uses the 8-pin HSOIC (DDA) package with PowerPAD™, measuring 4.90 mm × 3.90 mm. The exposed thermal pad (Pin 9) must be soldered to a PCB ground plane for thermal and electrical integrity.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Switch node | Connects to inductor; carries high di/dt switching current - requires short, low-inductance trace and local ceramic decoupling. |
| 2 (BOOT) | High-side gate driver supply | Requires 100-nF X7R ceramic capacitor between BOOT and SW to sustain high-side FET conduction. |
| 3 (VCC) | Internal LDO output | Bypass with 2.2-μF/16-V capacitor to AGND; no external loading permitted - powers internal logic and gate drivers. |
| 4 (FB) | Voltage feedback input | Connects to resistor divider midpoint; 1-V reference enables precise output regulation (±1% over temp). |
| 5 (EN/SYNC) | Enable & sync input | Logic-level enable (1.55 V threshold); not floating - tie to VIN for self-start or use resistor divider for system UVLO. |
| 6 (AGND) | Analog ground reference | Separate from PGND; connects to FB, EN/SYNC, and VCC bypass - must join PGND at single point near IC. |
| 7 (VIN) | Main input supply | Accepts 4–36 V; requires low-ESR input capacitor (≥22 μF) placed within 5 mm of VIN and PGND pins. |
| 8 (PGND) | Power ground return | Internal connection to low-side FET source; ties to CIN/COUT grounds and thermal pad - forms primary high-current return path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive infotainment and ADAS environmental requirements. |
| Internal compensation | Eliminates need for external Type II/III compensation network - reduces BOM count and layout sensitivity. |
| PFM and FPWM mode selection | Enables efficiency optimization (PFM) or low-noise constant-frequency operation (FPWM) - selectable via part number variant. |
| Soft-start into prebiased output | Prevents reverse current flow when enabling into live rail - critical for hot-swap and power-sequencing applications. |
| Hiccup-mode short-circuit protection | Disables switching after 64 consecutive current-limit cycles, then retries after 5 ms - protects MOSFETs during sustained overload. |
Applications
| Automotive Instrument Cluster Power | USB-C Charging Module Supply |
|---|---|
Use Scenario: Powers LCD display controller, microcontroller, and CAN transceiver in digital dashboard under cold-crank (6.5 V) and load-dump (36 V) conditions. IC Role / Device Role / Timing Role: Primary 5-V/3.3-V buck regulator providing clean, sequenced power with PGOOD monitoring for system reset coordination. Use Value: 75 µA quiescent current minimizes battery drain during vehicle sleep mode; 400 kHz switching avoids AM radio band interference. |
Use Scenario: Generates 5 V/3 A for USB Power Delivery sink circuitry in vehicle center console, supporting simultaneous charging of two smartphones. IC Role / Device Role / Timing Role: High-efficiency intermediate regulator stepping down 12 V battery to USB-compliant 5 V with tight line/load regulation (±1%). Use Value: 3-A capability and 60 ns min-on-time support full-load operation even at lowest battery voltage (6.5 V → 5 V @ 3 A). |
| Off-Battery Industrial Sensor Hub | Heads-Up Display (HUD) LED Driver Bias |
Use Scenario: Powers ARM Cortex-M7 MCU, Wi-Fi/BLE module, and analog sensor front-end in battery-backed industrial telemetry node. IC Role / Device Role / Timing Role: Main system regulator operating in PFM mode to maximize battery life, with EN pin controlled by MCU for dynamic power gating. Use Value: 75 µA IQ extends 2000-mAh Li-ion battery life to >1 year in deep-sleep monitoring mode. |
Use Scenario: Supplies stable 3.3 V bias to HUD projector ASIC and laser driver ICs, requiring low noise and fast transient response to image updates. IC Role / Device Role / Timing Role: Low-noise FPWM-mode buck converter minimizing output ripple (<10 mVpp) while maintaining 3-A headroom for pulsed laser loads. Use Value: Fixed 400 kHz frequency enables deterministic EMI filtering; internal compensation ensures stability with ceramic output capacitors only. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR23630AFQDDARQ1 | Same SOIC package and specs, but includes FPWM mode (forced PWM at light load) instead of PFM. | Preferred where low output ripple and constant frequency are required - e.g., noise-sensitive imaging or RF subsystems. | Select LMR23630AFQDDARQ1 if ripple-sensitive loads demand FPWM; otherwise LMR23630AQDDARQ1 offers superior light-load efficiency. |
| LMR23625QDRRRQ1 | 12-pin WSON package, adjustable frequency (200 kHz–2.2 MHz), 2.5-A rating, RT pin enabled. | Suitable for space-constrained designs needing frequency tuning or synchronization - e.g., multi-rail power trees with shared clock. | Choose LMR23625QDRRRQ1 for smaller footprint and frequency flexibility; LMR23630AQDDARQ1 suits cost-sensitive SOIC layouts with fixed-frequency needs. |
Compared with LMR23630AFQDDARQ1, the LMR23630AQDDARQ1 trades FPWM's low-noise advantage for higher light-load efficiency; versus LMR23625QDRRRQ1, it sacrifices frequency adjustability and WSON thermal performance (RθJA = 41.5°C/W) for SOIC manufacturability and lower assembly cost.
Availability
LMR23630AQDDARQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, USB charging modules, and off-battery industrial sensor hubs requiring stable component supply with AEC-Q100 compliance and long-term production continuity.
Supply support for LMR23630AQDDARQ1 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 power management ICs, with decades of automotive-grade product development and manufacturing expertise.
The LMR23630AQDDARQ1 belongs to TI's SIMPLE SWITCHER® automotive DC/DC converter family, designed specifically for robust, easy-to-deploy power solutions in harsh-temperature automotive environments - emphasizing qualification rigor, internal integration, and layout simplicity.
FAQ
What is the maximum input voltage rating for the LMR23630AQDDARQ1?
The LMR23630AQDDARQ1 has an absolute maximum input voltage rating of 42 V, with recommended operating range from 4 V to 36 V. This allows reliable operation during automotive load-dump events (up to 36 V per ISO 7637-2) while maintaining safe margin below the 42-V stress limit.
Does the LMR23630AQDDARQ1 require external compensation components?
No, the LMR23630AQDDARQ1 features fully internal compensation, eliminating the need for external Type II or Type III compensation networks. This reduces bill-of-materials count, simplifies PCB layout, and ensures stable operation across diverse output capacitor types and values.
Can the LMR23630AQDDARQ1 be synchronized to an external clock?
No - the LMR23630AQDDARQ1 variant uses a fixed 400 kHz oscillator and lacks an RT pin or SYNC functionality. Only WSON variants (e.g., LMR23630QDRRRQ1) support frequency adjustment or external synchronization; this SOIC version is optimized for simplicity and EMI predictability.
What is the thermal performance of the LMR23630AQDDARQ1 in its HSOIC package?
The LMR23630AQDDARQ1 in HSOIC (DDA) package has RθJA = 42.0°C/W and RθJC(bot) = 23.4°C/W. With proper thermal pad soldering to a 2-in² copper area, it delivers full 3-A output at +85°C ambient without forced airflow - validated per JEDEC JESD51-7 standards.
Is the LMR23630AQDDARQ1 compatible with prebiased output voltages during startup?
Yes, the LMR23630AQDDARQ1 supports soft-start into a prebiased output, preventing reverse current flow when enabled into an already-powered rail. This feature is essential for hot-swap applications and multi-rail power sequencing in automotive ECUs and infotainment systems.
LMR23630AQDDARQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm 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):
- 4V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 28V
- Current - Output:
- 3A
- Frequency - Switching:
- 400kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
LMR23630AQDDARQ1 FAQ
1.How can I place an order for LMR23630AQDDARQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR23630AQDDARQ1 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 LMR23630AQDDARQ1 reliable?
The price and inventory of LMR23630AQDDARQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR23630AQDDARQ1 is usually 5 days.
3.What payment methods are accepted for LMR23630AQDDARQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR23630AQDDARQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR23630AQDDARQ1?
LMR23630AQDDARQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR23630AQDDARQ1 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 LMR23630AQDDARQ1?
For technical support, including LMR23630AQDDARQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR23630AQDDARQ1 requirements.
6.How does Aetrix verify that LMR23630AQDDARQ1 is sourced from the original manufacturer or authorized distributors?
All LMR23630AQDDARQ1 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 LMR23630AQDDARQ1 meets industry standards.
7.What is the process for return or replacement of LMR23630AQDDARQ1?
All LMR23630AQDDARQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMR23630AQDDARQ1, 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 LMR23630AQDDARQ1 part is unused and in its original packaging.
Return procedure for LMR23630AQDDARQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMR23630AQDDARQ1 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…
