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Texas Instruments LM5013QDDARQ1
- Part No.:
- LM5013QDDARQ1
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM5013QDDARQ1.pdf
- Description:
- IC REG BUCK ADJ 3.5A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:3,598
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Product details
Overview
LM5013QDDARQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive non-synchronous buck DC/DC converter with integrated 100-V, 0.25-Ω high-side NMOS FET, delivering up to 3.5-A output current across 6–100-V input range. It features constant on-time (COT) control, 50-ns minimum on/off time, and ultra-low 3.1-µA shutdown quiescent current - enabling direct 48-V-to-12-V conversion in hybrid electric vehicle powertrain systems.
For engineers reviewing the LM5013QDDARQ1 datasheet, LM5013QDDARQ1 pinout, LM5013QDDARQ1 application, or LM5013QDDARQ1 equivalent, key selection criteria include its AEC-Q100 qualification, 1.2-V reference accuracy, programmable on-time via RRON, open-drain PGOOD signaling, and SO PowerPAD™ thermal performance for high-voltage automotive rails.
Technical Context
The LM5013QDDARQ1 implements a voltage-mode COT architecture where on-time is inversely proportional to VIN and set by an external resistor on RON pin, enabling quasi-fixed switching frequency (up to 1 MHz) across wide input ranges. Its internal VCC bias regulator powers gate drive and logic without external capacitors, while the bootstrap circuit relies on a mandatory 2.2-nF X7R ceramic capacitor between BST and SW pins.
Protection includes cycle-by-cycle peak current limiting at 4.5 A (typ), thermal shutdown at 175°C with 10°C hysteresis, precision EN/UVLO with three operating modes (shutdown/standby/active), and monotonic start-up into prebiased loads. The 1.2-V feedback reference exhibits ±1.5% variation over –40°C to +150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6 V to 100 V - supports direct step-down from 48-V battery systems without external surge suppression. |
| Output Current | 3.5 A continuous - enabled by integrated 0.25-Ω, 100-V high-side MOSFET with 150°C max junction rating. |
| Quiescent Current | 3.1 µA in shutdown - preserves battery life in always-on automotive modules during sleep mode. |
| Feedback Reference | 1.20 V ±1.5% - sets output voltage via resistor divider; enables precise 12-V, 5-V, or 3.3-V regulation. |
| Minimum On/Off Time | 50 ns - permits >10:1 step-down ratios (e.g., 48 V → 3.3 V) and near-100% duty cycle operation down to 6 V input. |
| Switching Frequency | Up to 1 MHz - programmable via RRON; fixed-frequency behavior in CCM improves EMI predictability. |
| PGOOD Threshold | FB = 1.14 V (rising), 1.08 V (falling) - provides 60-mV hysteresis for reliable sequencing and fault reporting. |
Pinout & Package
LM5013QDDARQ1 is housed in an 8-pin SO PowerPAD™ (DDA) package with 1.27-mm pin pitch and 4.89 mm × 3.90 mm body size. The exposed pad (EP) must be soldered to a large GND copper plane for thermal management (RθJC(bot) = 1.3°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Common return for internal circuits and EP thermal path; connects directly to PCB ground plane. |
| VIN | Power input | Supplies high-side FET and internal VCC regulator; rated for 100 V absolute max; requires low-impedance path. |
| EN/UVLO | Enable & UVLO input | Three-state control: <1.1 V = shutdown (3.1 µA IQ), 1.1–1.5 V = standby, >1.5 V = active start-up. |
| RON | On-time programming | Resistor-to-GND sets tON; 25 kΩ yields ~245 ns at 100 V; enables frequency stability across VIN range. |
| FB | Feedback input | Compares output voltage (via resistor divider) to 1.2-V internal reference; requires ≥20-mV ripple for COT stability. |
| PGOOD | Open-drain status | Signals regulation status; pulls low when FB drops below 1.08 V; needs 10–100 kΩ pullup to ≤14 V rail. |
| BST | Bootstrap supply | Charges internal high-side gate driver; requires 2.2-nF X7R ceramic cap to SW; no external diode needed. |
| SW | Switching node | Internal connection to high-side FET source; ties to inductor and Schottky diode cathode; handles full VIN transients. |
Key Features
| Feature | Design Value |
|---|---|
| Constant On-Time (COT) Control | Delivers fast load transient response with minimal output undershoot; eliminates loop compensation components. |
| Integrated 100-V High-Side FET | 0.25-Ω RDS(on) enables compact 3.5-A solution without external switch; reduces BOM count and layout complexity. |
| AEC-Q100 Grade 1 Qualification | Validated for –40°C to +125°C ambient operation; meets automotive reliability, ESD (HBM ±2 kV), and lifetime requirements. |
| Ultra-Low IQ Sleep Mode | 10 µA VIN current at light load preserves battery energy in infotainment or ADAS modules during vehicle sleep. |
| CISPR 25 Class 5 EMI Compliance | Optimized switching behavior and layout guidance enable pass without shielding in demanding automotive EMC environments. |
| Monotonic Start-Up into Prebiased Loads | Prevents reverse current flow during hot-plug or system wake-up; critical for multi-rail power sequencing in ECUs. |
Applications
| 48-V Battery Systems | Hybrid Powertrain Control |
|---|---|
|
Use Scenario: Regulating 48-V nominal battery to 12-V auxiliary rail in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Primary non-synchronous buck controller managing high-step-down ratio with 50-ns minimum on-time. Use Value: Eliminates need for intermediate 24-V stage; reduces component count and improves system efficiency at partial load. |
Use Scenario: Powering gate drivers and sensors in inverter control units for e-axle systems. IC Role / Device Role / Timing Role: High-reliability point-of-load regulator with thermal shutdown recovery and PGOOD sequencing. Use Value: Maintains stable 5-V/3.3-V rails during engine cranking dips (VIN ≥6 V); supports functional safety diagnostics. |
| Automotive Lighting Modules | ADAS Camera Power Supply |
|
Use Scenario: Driving LED headlamps requiring regulated 12-V input from variable 9–16-V or 48-V bus. IC Role / Device Role / Timing Role: Input-flexible buck converter with UVLO hysteresis and soft-start to prevent inrush damage. Use Value: Enables single design across 12-V and 48-V vehicle platforms; 3.5-ms internal soft-start limits stress on electrolytic bulk caps. |
Use Scenario: Providing clean, low-noise 1.8-V/3.3-V rails for image sensors and ISP processors in surround-view cameras. IC Role / Device Role / Timing Role: Low-EMI COT regulator with precise 1.2-V reference and PGOOD monitoring for fail-safe operation. Use Value: Meets CISPR 25 Class 5 without ferrite beads; 10-µA sleep current extends parking-mode runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar non-synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5163QDDARQ1 | Same 8-pin SO PowerPAD package and pinout; lower 0.5-A output current; identical 100-V rating and COT architecture. | Targeted at low-power auxiliary rails (e.g., CAN transceivers, microcontrollers); not suitable for 3.5-A motor control supplies. | Select when output current ≤0.5 A and board space reuse is prioritized over current capability. |
| LM5164QDDARQ1 | Same footprint and pinout; 1-A output rating; shares 100-V input, 50-ns min on-time, and AEC-Q100 Grade 1 qualification. | Optimized for mid-power domains like HVAC actuators or body control modules; lacks thermal margin for sustained 3.5-A loads. | Choose for 0.5–1.0 A applications where LM5013QDDARQ1's 3.5-A capability is over-specified and cost reduction is critical. |
Compared with LM5013QDDARQ1, LM5163QDDARQ1 and LM5164QDDARQ1 offer identical packaging and control architecture but scale down output current to 0.5 A and 1 A respectively - making them viable alternatives only when full 3.5-A capability is unnecessary and pin compatibility simplifies multi-tier platform design.
Availability
LM5013QDDARQ1 is available at Aetrix Electronics and suitable for automotive powertrain systems, hybrid vehicle battery management, and ADAS camera modules requiring stable component supply under AEC-Q100 compliance and extended temperature operation.
Supply support for LM5013QDDARQ1 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 ICs with decades of automotive qualification expertise.
The LM5013QDDARQ1 belongs to TI's automotive-qualified DC/DC converter portfolio, designed specifically for high-input-voltage, high-reliability applications in 48-V mild-hybrid and electric powertrain systems.
FAQ
What is the maximum output current supported by the LM5013QDDARQ1?
The LM5013QDDARQ1 delivers up to 3.5 A of continuous DC output current, enabled by its integrated 100-V, 0.25-Ω high-side NMOS FET and SO PowerPAD™ thermal design. Actual achievable current depends on PCB copper area, ambient temperature, and input/output voltage differential - with thermal derating beginning above 125°C junction temperature per the datasheet's RθJA = 34.8°C/W specification.
Does the LM5013QDDARQ1 require external compensation components?
No, the LM5013QDDARQ1 uses a constant on-time (COT) control architecture that eliminates the need for external loop compensation components such as type-II or type-III networks. Stability is maintained through controlled feedback ripple (≥20 mV), achieved via resistor-ESR, CFF, or RC injection methods - as detailed in TI's AN-1481 application note.
What bootstrap capacitor value is required for the LM5013QDDARQ1?
The LM5013QDDARQ1 requires a 2.2-nF, 50-V X7R ceramic capacitor connected between BST and SW pins. This value is specified in the Absolute Maximum Ratings table and validated for reliable high-side gate drive under all operating conditions - including wake-up from sleep mode where BST recharge timing is critical.
How does the EN/UVLO pin function on the LM5013QDDARQ1?
The EN/UVLO pin on the LM5013QDDARQ1 provides three operational states: below 1.1 V = shutdown (3.1 µA IQ), 1.1–1.5 V = standby (internal VCC active, no switching), and above 1.5 V = full operation. A resistor divider from VIN to GND sets the turn-on threshold per Equation 5 in the datasheet, enabling programmable undervoltage lockout for battery protection.
Is the LM5013QDDARQ1 compliant with automotive EMC standards?
Yes, the LM5013QDDARQ1 is designed to meet CISPR 25 Class 5 radiated emissions requirements when implemented with recommended layout practices, input filtering, and proper grounding. Its COT control, 50-ns timing precision, and integrated bootstrap diode contribute to low EMI generation - verified in TI's evaluation module test reports.
LM5013QDDARQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- 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):
- 6V
- Voltage - Input (Max):
- 100V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 100V
- Current - Output:
- 3.5A
- Frequency - Switching:
- Up to 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
LM5013QDDARQ1 FAQ
1.How can I place an order for LM5013QDDARQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM5013QDDARQ1 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 LM5013QDDARQ1 reliable?
The price and inventory of LM5013QDDARQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM5013QDDARQ1 is usually 5 days.
3.What payment methods are accepted for LM5013QDDARQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM5013QDDARQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM5013QDDARQ1?
LM5013QDDARQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM5013QDDARQ1 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 LM5013QDDARQ1?
For technical support, including LM5013QDDARQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM5013QDDARQ1 requirements.
6.How does Aetrix verify that LM5013QDDARQ1 is sourced from the original manufacturer or authorized distributors?
All LM5013QDDARQ1 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 LM5013QDDARQ1 meets industry standards.
7.What is the process for return or replacement of LM5013QDDARQ1?
All LM5013QDDARQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM5013QDDARQ1, 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 LM5013QDDARQ1 part is unused and in its original packaging.
Return procedure for LM5013QDDARQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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