My Inquiry
My Account
Texas Instruments LMR24210TL/NOPB
- Part No.:
- LMR24210TL/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 28-WFBGA, DSBGA
- Datasheet:
-
LMR24210TL/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1A 28DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:605
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMR24210TL/NOPB from Texas Instruments is a 42-V input, 1-A synchronous step-down DC/DC regulator in a 28-bump DSBGA package, featuring COT control with ERM architecture, integrated dual N-channel MOSFETs (RDS(ON) = 0.375 Ω / 0.225 Ω), and 0.8 V feedback reference for precise output regulation down to 0.8 V. It delivers stable power in space-constrained industrial point-of-load applications such as power meters and distributed 12 V/24 V rail conversions.
For engineers reviewing the LMR24210TL/NOPB datasheet, LMR24210TL/NOPB pinout, LMR24210TL/NOPB application, or LMR24210TL/NOPB equivalent, key selection considerations include its 4.5–42 V input range, no-loop-compensation design, programmable soft start via external capacitor, 25 µA shutdown current, and compatibility with low-ESR ceramic output capacitors without stability dependency on ESR.
Technical Context
The LMR24210TL/NOPB implements a constant-on-time (COT) control scheme with valley-current limiting and zero-coil-current detection to enable seamless transition between discontinuous (DCM) and continuous conduction mode (CCM). Its ERM (Enhanced Ripple Mode) architecture eliminates reliance on output capacitor ESR for loop stability while maintaining fast transient response.
Switching frequency is externally programmable up to 1 MHz via RON, with inverse VIN–ton relationship ensuring near-constant fSW across line variations. Internal 6 V start-up regulator (VCC) powers gate drivers and control logic, with UVLO at 3.75 V and thermal shutdown at 165 °C with 20 °C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 42 V - supports direct connection to unregulated 12 V, 24 V, and 36 V industrial rails without pre-regulation. |
| Output Voltage Range | 0.8 V to 24 V - set by external resistor divider; 0.8 V internal reference enables sub-1 V core supply generation. |
| Max Output Current | 1 A continuous - sustained at ambient ≤90 °C with standard PCB layout; derated above due to thermal limits. |
| Switching Frequency | Up to 1 MHz - programmable via RON; minimum on-time of 150 ns sets max frequency limit at high VIN. |
| Feedback Reference | 0.800 V ±2% (−40°C to +125°C) - tight tolerance ensures accurate output regulation across temperature. |
| Shutdown Quiescent Current | 25 µA typical - enables ultra-low-power standby in battery-backed or energy-sensitive systems. |
| Main MOSFET RDS(ON) | 0.375 Ω max - reduces conduction loss at high load; paired with 0.225 Ω sync FET for high efficiency at low VOUT. |
Pinout & Package
LMR24210TL/NOPB uses a 28-bump DSBGA package (3.676 mm × 2.48 mm, 0.4 mm pitch) optimized for minimal board area and thermal performance in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A2, A3, B2, B3, C2, C3, D2, D3, D4 | SW | Switching node - connects to inductor; carries high di/dt; requires low-inductance layout and thermal relief to PGND. |
| A4, B4 | VIN | Main input supply - accepts 4.5–42 V; must be decoupled locally with ≥10 µF ceramic capacitor. |
| C4 | BST | Bootstrap capacitor connection - 33 nF capacitor between BST and SW supplies high-side gate drive voltage. |
| E3, E4, F1, F2, F3, G3 | AGND | Analog ground - reference for FB, SS, EN, RON; must be isolated from power ground except at single-point tie. |
| G2 | SS | Soft-start control - 8 µA internal current source charges external capacitor; determines ramp time of VOUT. |
| G1 | FB | Feedback input - senses output via resistor divider; 5 nA bias current minimizes divider error. |
| G4 | EN | Enable input - active-high; threshold 1.18 V typical; open-drain compatible; hysteresis prevents chatter. |
| F4 | RON | On-time programming - resistor from VIN to RON sets switching frequency; min value constrained by 150 ns ton. |
| E1, E2 | VCC | Internal LDO output - regulated 6 V supply for gate drivers; requires ≥680 nF bypass to AGND for stability. |
| A1, B1, C1, D1 | PGND | Power ground - source of synchronous MOSFET; must connect directly to large copper pour for thermal and EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| No loop compensation required | Enables single-layer PCB implementation with minimal external components - eliminates compensation network design effort and tuning. |
| COT with ERM architecture | Stabilizes operation using output ripple instead of ESR - allows use of ultra-low-ESR ceramic capacitors without phase-margin risk. |
| Programmable soft start | External capacitor sets controlled VOUT ramp rate - prevents inrush current and avoids bus droop during system power-up. |
| Integrated dual N-MOSFETs | Reduces BOM count and footprint - eliminates discrete high-side and sync FET selection, layout, and gate-drive complexity. |
| Valley current limit protection | 1.8 A typical limit with automatic recovery - protects against overload and short-circuit without latch-off, supporting robust field operation. |
Applications
| Industrial Power Meters | Point-of-Load Conversion |
|---|---|
|
Use Scenario: Metering ICs and isolation interfaces require clean, low-noise 3.3 V or 5 V rails from 24 V or 48 V distribution buses in smart grid equipment. IC Role / Device Role / Timing Role: Primary buck regulator delivering regulated 3.3 V @ 1 A with <±1% output accuracy and <10 mV load transient deviation. Use Value: DSBGA package fits tight meter PCB real estate; 25 µA shutdown current extends battery backup runtime during mains failure. |
Use Scenario: FPGA I/O banks or microcontroller peripherals need localized 1.2 V or 1.8 V supplies derived from 12 V backplane rails in factory automation controllers. IC Role / Device Role / Timing Role: High-efficiency synchronous buck converter operating in CCM at full load; maintains >90% efficiency from 4.5 V to 42 V input. Use Value: Integrated MOSFETs and no-compensation design reduce solution size to <30 mm²; ceramic-capacitor compatibility simplifies filtering. |
| Space-Constrained IoT Gateways | Distributed Industrial Power |
|
Use Scenario: Cellular/Wi-Fi modules and sensors in edge gateways demand ultra-compact 3.3 V/1 A supplies within 5 mm × 5 mm board area constraints. IC Role / Device Role / Timing Role: Primary DC/DC regulator with programmable soft start and EN-controlled sequencing for multi-rail power-up. Use Value: 3.676 mm × 2.48 mm DSBGA footprint enables placement under connectors or modules; 1 MHz capability allows small 2.2 µH inductors. |
Use Scenario: PLC I/O modules convert 24 V field power to isolated 5 V logic rails, requiring high reliability and thermal resilience in cabinet-mounted enclosures. IC Role / Device Role / Timing Role: Robust buck stage with thermal shutdown (165 °C), OVP (0.92 V FB threshold), and UVLO (3.75 V VCC) for harsh environments. Use Value: Stable operation from −40°C to +125°C junction temperature; 50 °C/W θJA enables 1 A output with minimal heatsinking on 2-layer boards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR24208TL/NOPB | Same DSBGA package and COT architecture, but rated for 0.8 A max output current and 36 V max VIN. | Suitable for lower-power sensor nodes or auxiliary rails where 1 A headroom is unnecessary. | Select when thermal budget or cost sensitivity favors reduced current rating without sacrificing package or control architecture. |
| TPS54240DGQR | SOIC-8 package, 42 V input, 2 A output, current-mode control requiring external compensation; higher quiescent current (60 µA). | Better suited for designs needing higher output current or SOIC layout familiarity, but larger footprint and more complex loop design. | Choose when board space permits SOIC and design team prefers current-mode control with adjustable slope compensation. |
Compared with LMR24210TL/NOPB, LMR24208TL/NOPB offers identical integration and layout benefits at lower current, while TPS54240DGQR trades DSBGA miniaturization for higher current and SOIC manufacturability - neither is pin-compatible, but both serve overlapping industrial buck use cases with distinct trade-offs in size, efficiency, and design effort.
Availability
LMR24210TL/NOPB is available at Aetrix Electronics and suitable for industrial power meters, space-constrained IoT gateways, and distributed 24 V rail conversions requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for LMR24210TL/NOPB 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 industrial and automotive power solutions.
The LMR24210TL/NOPB belongs to TI's LMR24x family of high-input-voltage synchronous buck regulators, designed specifically for compact, efficient point-of-load conversion in industrial automation, energy infrastructure, and transportation systems.
FAQ
What is the maximum recommended input voltage for the LMR24210TL/NOPB?
The absolute maximum input voltage for the LMR24210TL/NOPB is 43.5 V, but the recommended operating range is 4.5 V to 42 V. Operation at 42 V is fully specified across temperature and load conditions per the datasheet's Recommended Operating Ratings table. Exceeding 42 V risks violating safe operating area limits and may trigger overvoltage protection or damage the internal MOSFETs.
Does the LMR24210TL/NOPB require external compensation components?
No, the LMR24210TL/NOPB does not require external compensation components. Its constant-on-time (COT) control architecture with ERM (Enhanced Ripple Mode) eliminates the need for loop compensation networks. Stability is maintained inherently through output ripple sensing, enabling reliable operation with ceramic output capacitors and reducing total BOM count and design complexity.
How is the switching frequency programmed on the LMR24210TL/NOPB?
The switching frequency of the LMR24210TL/NOPB is programmed using an external resistor (RON) connected between the VIN and RON pins. The on-time varies inversely with VIN, yielding nearly constant frequency across input voltage changes. Equation 2 in the datasheet defines fSW ≈ 1.3×10⁻¹⁰ × RON / ((VIN − VOUT) × RON); minimum RON is constrained by the 150 ns minimum on-time limit.
What is the purpose of the BST pin on the LMR24210TL/NOPB?
On the LMR24210TL/NOPB, the BST (bootstrap) pin provides the floating gate drive voltage for the high-side N-channel MOSFET. A 33 nF capacitor connected between BST and SW charges via an internal diode during the low-side FET conduction phase, enabling full enhancement of the high-side switch. Proper BST capacitor placement and routing are critical for reliable gate drive and efficiency.
Can the LMR24210TL/NOPB operate with a 0.8 V output voltage?
Yes, the LMR24210TL/NOPB supports 0.8 V output voltage as its minimum regulated level. The internal feedback reference is precisely 0.800 V (±2% over temperature), allowing direct connection of the FB pin to the output for 0.8 V operation - provided a minimum pre-load resistor draws >20 µA to ensure sufficient inductor current ripple for stable regulation under no-load conditions.
LMR24210TL/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 28-WFBGA, DSBGA
- 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):
- 4.5V
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 24V
- Current - Output:
- 1A
- Frequency - Switching:
- Up to 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-DSBGA
LMR24210TL/NOPB FAQ
1.How can I place an order for LMR24210TL/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMR24210TL/NOPB 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 LMR24210TL/NOPB reliable?
The price and inventory of LMR24210TL/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMR24210TL/NOPB is usually 5 days.
3.What payment methods are accepted for LMR24210TL/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMR24210TL/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMR24210TL/NOPB?
LMR24210TL/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMR24210TL/NOPB 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 LMR24210TL/NOPB?
For technical support, including LMR24210TL/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMR24210TL/NOPB requirements.
6.How does Aetrix verify that LMR24210TL/NOPB is sourced from the original manufacturer or authorized distributors?
All LMR24210TL/NOPB 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 LMR24210TL/NOPB meets industry standards.
7.What is the process for return or replacement of LMR24210TL/NOPB?
All LMR24210TL/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMR24210TL/NOPB, 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 LMR24210TL/NOPB part is unused and in its original packaging.
Return procedure for LMR24210TL/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMR24210TL/NOPB 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…
