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Texas Instruments LMR16020PDDA
- Part No.:
- LMR16020PDDA
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMR16020PDDA.pdf
- Description:
- IC REG BUCK ADJ 2A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:944
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Product details
Overview
LMR16020PDDA from Texas Instruments is a 60 V input, 2 A synchronous step-down DC-DC converter with integrated high-side MOSFET, 40 µA quiescent current, adjustable 200 kHz–2.5 MHz switching frequency, and precision enable control-designed for automotive battery regulation and industrial power supplies where wide VIN and low IQ are critical.
For engineers reviewing the LMR16020PDDA datasheet, LMR16020PDDA pinout, LMR16020PDDA application, or LMR16020PDDA equivalent, key selection considerations include its 4.3–60 V input range, 155 mΩ high-side RDS(on), internal compensation, PGOOD flag, and HSOIC-8 PowerPAD™ package thermal performance.
Technical Context
The LMR16020PDDA implements fixed-frequency peak current mode control with Sleep-mode at light load to maintain high efficiency across wide input and load ranges. Its internal error amplifier and slope compensation ensure stable operation with minimal external components and support for ceramic output capacitors.
It features dual-mode RT/SYNC pin operation: resistor-programmed frequency (200 kHz–2.5 MHz) or synchronization to external clock (250 kHz–2.3 MHz), plus BOOT capacitor recharge circuit enabling up to ~97% duty cycle for low-dropout operation under high VIN/VOUT ratios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.3 V to 60 V - supports direct connection to 12 V, 24 V, 36 V, and 48 V industrial/automotive batteries without pre-regulation. |
| Output Current | 2 A continuous - delivers full rated load in thermally constrained HSOIC-8 PowerPAD™ package with RθJA = 42.5 °C/W. |
| Quiescent Current | 40 µA - enables >10-year battery life in always-on automotive modules (e.g., telematics, body control units). |
| High-Side RDS(on) | 155 mΩ (typ) - reduces conduction loss and improves full-load efficiency, especially at low VOUT (e.g., 3.3 V, 5 V). |
| Switching Frequency | 200 kHz–2.5 MHz - allows trade-off between EMI (lower fSW) and solution size (higher fSW with smaller inductor/capacitor). |
| Feedback Reference | 0.750 V ±1.5% - enables precise output voltage setting via resistor divider; supports VOUT from 0.8 V to 50 V. |
| Protection Features | Thermal shutdown (170 °C), cycle-by-cycle current limit (2.5–3.8 A), UVLO (4.0 V rising), OVP, and short-circuit foldback - ensures robust field operation. |
Pinout & Package
LMR16020PDDA is housed in an 8-pin HSOIC (DDA) package with exposed thermal pad (4.89 mm × 3.90 mm), optimized for low thermal resistance (RθJC(bot) = 3.8 °C/W) and PCB heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply | Drives high-side MOSFET gate; requires 0.1 µF X7R/X5R ceramic capacitor to SW for reliable 100% duty-cycle capability. |
| VIN | Main power input | Accepts 4.3–60 V; must be bypassed with low-ESR capacitor close to pin to minimize high-frequency noise and voltage spikes. |
| EN | Enable control | Precision threshold (1.2 V typ); internal 1 µA pull-up allows floating-enable; supports adjustable UVLO using external resistor divider. |
| RT/SYNC | Frequency programming/sync | Dual-function pin: resistor-to-GND sets fSW; external clock >250 kHz overrides to sync mode with PLL lock-in time <100 µs. |
| FB | Voltage feedback | Connects to resistor divider; 0.75 V reference enables accurate VOUT regulation; sensitive to layout noise-keep trace short and shielded. |
| PGOOD | Power-good flag | Open-drain output asserts high when VOUT is within ±3% of target; requires 10–100 kΩ pull-up to ≤7 V logic rail. |
| GND | System ground | Signal and power return; connects to thermal pad for primary heat path-must be solidly tied to large PCB ground plane. |
| SW | Switch node | Drives external inductor; high di/dt node-requires minimized loop area with low-inductance layout to reduce EMI and ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Internal compensation | Eliminates need for external compensation network-reduces BOM count and design iteration time for stable operation across all VOUT/L/C combinations. |
| Sleep-mode operation | Reduces IQ to 40 µA at light load while maintaining regulation-critical for battery-powered systems requiring multi-year standby life. |
| Power-Good (PGOOD) flag | Provides system-level power sequencing and fault detection without external monitoring circuitry-simplifies host MCU boot validation. |
| Adjustable UVLO hysteresis | Enables precise system-level brown-out protection using EN pin resistors-supports custom start/stop thresholds (e.g., 10.5 V/9.8 V for 12 V battery). |
| Thermal-enhanced PowerPAD™ | Exposed thermal pad lowers junction-to-board resistance to 25.4 °C/W-enables 2 A continuous output in compact 8-pin SOIC footprint without heatsink. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Power |
|---|---|
|
Use Scenario: Powering microcontrollers, CAN transceivers, and sensor interfaces in vehicle door modules, seat controllers, and lighting ECUs. IC Role / Device Role / Timing Role: Primary 5 V or 3.3 V point-of-load regulator converting raw 9–16 V battery to stable logic rail. Use Value: 40 µA quiescent current prevents excessive battery drain during vehicle sleep mode; 60 V ABS rating withstands load-dump transients. |
Use Scenario: Generating isolated 5 V/12 V rails for digital I/O, analog front-ends, and communication interfaces in programmable logic controllers. IC Role / Device Role / Timing Role: Wide-input buck converter supplying auxiliary power from 24 V DC bus or 48 V telecom supply. Use Value: 4.3–60 V input range accommodates industrial brown-outs and surges; PGOOD enables safe startup sequencing before FPGA or MCU initialization. |
| Telecom Remote Radio Unit | Medical Portable Diagnostic Device |
|
Use Scenario: Providing regulated 3.3 V and 5 V rails in outdoor 4G/5G remote radio heads powered from -48 V DC plant supply via intermediate 12 V bus. IC Role / Device Role / Timing Role: Secondary buck stage stepping down 12 V intermediate rail to low-noise logic and RF bias voltages. Use Value: Adjustable switching frequency avoids sensitive RF bands; internal compensation simplifies filtering for low ripple in RF-sensitive environments. |
Use Scenario: Powering ARM-based processors, display drivers, and ADCs in handheld ultrasound or glucose monitors operating from single-cell Li-ion (3.0–4.2 V) or two-cell packs (6–8.4 V). IC Role / Device Role / Timing Role: High-efficiency step-down regulator delivering 1.8 V/3.3 V from variable battery voltage with ultra-low standby IQ. Use Value: 1 µA shutdown current extends battery runtime between clinical uses; thermal pad ensures reliability in sealed enclosures without airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR14020PDDA | 40 V max input, identical 2 A rating, same HSOIC-8 package and pinout, but lacks SYNC capability and has higher IQ (65 µA). | Better suited for 24 V-only systems where 60 V rating is unnecessary; not recommended for automotive load-dump or 48 V telecom inputs. | Select when cost sensitivity outweighs need for 60 V rating or external clock sync-no PCB changes required due to pin compatibility. |
| TPS54260DGQ | 60 V input, 2.5 A rating, wider 100 kHz–2.5 MHz fSW range, but requires external compensation and has higher IQ (145 µA). | Offers greater flexibility in loop tuning and higher peak current, but increases design complexity and reduces light-load efficiency. | Choose when dynamic load response or custom compensation is required; expect additional external components and layout effort. |
Compared with LMR14020PDDA, the LMR16020PDDA provides essential 60 V capability and SYNC functionality for automotive/industrial use; versus TPS54260DGQ, it trades design flexibility for out-of-box simplicity and superior light-load efficiency.
Availability
LMR16020PDDA is available at Aetrix Electronics and suitable for automotive battery regulation, industrial PLC power supplies, and telecom remote radio units requiring stable component supply with long-term manufacturability and consistent parametric performance.
Supply support for LMR16020PDDA 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 expertise in high-reliability power conversion solutions.
The LMR16020PDDA belongs to TI's SIMPLE SWITCHER® family-engineered for ease of use in industrial, automotive, and telecom applications where wide input range, low IQ, and thermal robustness are mandatory.
FAQ
What is the maximum input voltage rating for the LMR16020PDDA?
The LMR16020PDDA has an absolute maximum input voltage rating of 65 V, with recommended continuous operation up to 60 V. This 60 V rating enables direct integration into 48 V telecom systems and automotive applications subject to ISO 7637-2 load-dump transients, ensuring reliable operation without external clamping circuitry.
Does the LMR16020PDDA require external compensation components?
No, the LMR16020PDDA features fully internal compensation, eliminating the need for external Type-II or Type-III compensation networks. This simplifies design, reduces BOM count, and guarantees stability across standard output capacitor types (including ceramic), making it ideal for rapid prototyping and space-constrained layouts.
How does the Sleep-mode function in the LMR16020PDDA improve efficiency?
Sleep-mode activates when load current drops below ~300 mA peak inductor current, disabling switching and reducing quiescent current to 40 µA. The device periodically wakes to sample output voltage and resumes switching only if regulation is lost-extending battery life in always-on systems like automotive body controllers without sacrificing transient response.
Can the LMR16020PDDA synchronize to an external clock, and what are the valid frequency ranges?
Yes, the LMR16020PDDA supports synchronization via its RT/SYNC pin over 250 kHz to 2.3 MHz. When driven by a clean square wave (VH ≥1.7 V, VL ≤0.5 V, pulse width ≥30 ns), the internal PLL locks within 100 µs-enabling EMI reduction by aligning switching edges with system clocks or avoiding sensitive frequency bands.
What thermal performance can be expected from the LMR16020PDDA in its HSOIC-8 PowerPAD™ package?
In the HSOIC-8 PowerPAD™ (DDA) package, the LMR16020PDDA achieves RθJC(bot) = 3.8 °C/W and RθJA = 42.5 °C/W with standard 2-layer PCB layout. With proper thermal pad soldering to a 1-in² copper pour, it sustains 2 A continuous output at ambient temperatures up to 85 °C without derating-validated per JEDEC JESD51 standards.
LMR16020PDDA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.3V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 50V
- Current - Output:
- 2A
- Frequency - Switching:
- 200kHz ~ 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
LMR16020PDDA FAQ
1.How can I place an order for LMR16020PDDA through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR16020PDDA 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 LMR16020PDDA reliable?
The price and inventory of LMR16020PDDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR16020PDDA is usually 5 days.
3.What payment methods are accepted for LMR16020PDDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR16020PDDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR16020PDDA?
LMR16020PDDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR16020PDDA 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 LMR16020PDDA?
For technical support, including LMR16020PDDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR16020PDDA requirements.
6.How does Aetrix verify that LMR16020PDDA is sourced from the original manufacturer or authorized distributors?
All LMR16020PDDA 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 LMR16020PDDA meets industry standards.
7.What is the process for return or replacement of LMR16020PDDA?
All LMR16020PDDA units undergo pre-shipment inspection (PSI). If there is an issue with LMR16020PDDA, 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 LMR16020PDDA part is unused and in its original packaging.
Return procedure for LMR16020PDDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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