My Inquiry
My Account
Texas Instruments LM76002RNPR
- Part No.:
- LM76002RNPR
- Manufacturer:
- Texas Instruments
- Package:
- 30-WFQFN Exposed Pad
- Datasheet:
-
LM76002RNPR.pdf
- Description:
- IC REG BUCK ADJ 2.5A 30WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,383
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM76002RNPR from Texas Instruments is a 3.5-V to 60-V input, 2.5-A synchronous step-down DC-DC regulator in a 30-pin WQFN (6.0 mm × 4.0 mm) package with wettable flanks. It delivers regulated output voltage from 1 V to 95% of VIN, features 15-µA quiescent current in regulation, 65-ns minimum on-time, and integrated high-side/low-side MOSFETs (RDS(on) = 150 mΩ / 85 mΩ). It is used in telecom power supplies requiring wide-input, high-efficiency, compact POL conversion.
For engineers reviewing the LM76002RNPR datasheet, LM76002RNPR pinout, LM76002RNPR application, or LM76002RNPR equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, confirmed alternatives with functional distinctions, and supply-chain support details specific to LM76002RNPR - not generic buck converter assumptions.
Technical Context
The LM76002RNPR employs fixed-frequency peak-current-mode control with internal compensation, enabling stable operation across wide input/output ranges without external loop components. Its tON-MIN = 65 ns and tOFF-MIN = 95 ns support high step-down ratios (e.g., 48 V → 3.3 V at 2.2 MHz), while automatic frequency foldback maintains regulation under light-load or low-VIN conditions.
It supports three operating modes via SYNC/MODE pin: auto PFM/DCM for efficiency optimization, forced PWM for EMI-sensitive systems, and external clock synchronization (300 kHz–2.2 MHz). Power-good flag (PGOOD), precision enable with adjustable UVLO, and voltage tracking (SS/TRK) enable sequencing in multi-rail industrial systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5 V to 60 V - supports 24 V and 48 V industrial/comms rails; 65 V absolute max withstands load-dump transients. |
| Output Current | 2.5 A continuous - sufficient for FPGA core or DSP I/O rails; derates per thermal data (RθJA = 29.6°C/W). |
| Quiescent Current | 15 µA in regulation - enables always-on subsystems (e.g., remote monitoring nodes) with <10 µW standby loss at 24 V. |
| Switching Frequency | 300 kHz to 2.2 MHz - selectable via RT resistor; 2.2 MHz allows <1 µH inductors, shrinking solution size by >40% vs 500 kHz. |
| Feedback Reference | 1.006 V (typ) - sets output accuracy; combined with RFBT/RFBB divider, enables ±1% VOUT tolerance over line/load/temp. |
| Thermal Shutdown | 160°C trip, 135°C recovery - protects against sustained overload; DAP/EP soldered to PCB ground plane required for rated performance. |
| Current Limit | HS: 4.2 A (typ), LS: 3.2 A (typ) - cycle-by-cycle protection prevents MOSFET failure during short-circuit; hiccup mode limits average power dissipation. |
Pinout & Package
LM76002RNPR uses a 30-pin WQFN package (6.0 mm × 4.0 mm, 0.5-mm pitch) with wettable flanks and exposed thermal pad (DAP) connected internally to AGND. The package enables high-density layout and superior thermal transfer to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–5, 22, 26 | SW | Switch node - connects to inductor and boot capacitor; carries high di/dt; requires tight layout to minimize EMI and voltage spikes. |
| 6 | BOOT | High-side gate driver supply - 470-nF ceramic cap to SW forms bootstrap circuit; critical for HS FET turn-on above PVIN. |
| 7,19,23,27–30 | NC | No-connect - tie to ground pour for thermal relief and mechanical stability; no electrical function. |
| 8 | VCC | Internal bias LDO output - powers control logic; requires 2.2-µF ceramic cap to AGND; do not load externally. |
| 9 | BIAS | Optional efficiency boost input - connect to VOUT (3.3–18 V) or external 3.3/5 V rail; reduces quiescent loss by ~50% vs VCC-only operation. |
| 10 | RT | Frequency set - resistor to AGND selects fSW; 133 kΩ = 300 kHz, 17.4 kΩ = 2.2 MHz; open = 500 kHz default. |
| 11 | SS/TRK | Soft-start & tracking - internal 6.3-ms ramp (open); external cap extends ramp; connect to master supply for voltage sequencing. |
| 12 | FB | Feedback input - senses VOUT via resistive divider; 1.006 V reference enables precise output setting; avoid noise coupling. |
| 16 | PGOOD | Open-drain power-good flag - active-high when VOUT within ±5% of target; requires pull-up; signals system controller readiness. |
| 17 | SYNC/MODE | Mode control - ground = PFM/DCM; logic high = FPWM; external clock = sync; defines light-load behavior and EMI profile. |
| 18 | EN | Precision enable - 1.204 V threshold with 150-mV hysteresis; supports adjustable UVLO using resistor divider from PVIN. |
| 13–15 | AGND | Analog ground - reference for FB, EN, PGOOD; separate from PGND; connect directly to low-noise system ground plane. |
| 20–21,24–25 | PVIN | Main power input - supplies HS FET and internal LDO; bypass with CIN placed adjacent to pins 20/21/24/25 and PGND. |
| 24–25,26 | PGND | Power ground - source of LS FET; return path for high-current inductor and CIN/COUT; must be low-impedance copper. |
| EP (DAP) | Thermal pad | Low-impedance AGND connection - primary heat path; requires ≥9 thermal vias to inner/outer ground layers for full 2.5-A rating. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous rectification | Eliminates external Schottky diode - reduces BOM count, improves efficiency by 5–8% at 1 A, and simplifies layout. |
| Adjustable soft-start (6.3 ms default) | Prevents inrush current into bulk capacitors - avoids input rail collapse and downstream reset glitches during power-up. |
| Voltage tracking capability | Enables controlled ramp-up of multiple rails - critical for FPGAs and processors requiring strict VCCINT/VCCIO sequencing. |
| Pin-selectable FPWM operation | Maintains constant switching frequency under light load - essential for EMI compliance in noise-sensitive applications like video surveillance. |
| High-efficiency light-load architecture (PFM) | Reduces quiescent current to 15 µA - extends battery life in always-on IoT edge nodes powered from 12 V or 24 V sources. |
Applications
| Telecom Infrastructure | Programmable Logic Controllers |
|---|---|
Use Scenario: Point-of-load regulation for base station RF transceivers operating from 48 V backplane. IC Role / Device Role / Timing Role: Primary 3.3 V/2.5 A DC-DC converter delivering clean, sequenced power to analog front-end ICs. Use Value: 65 ns tON-MIN enables direct 48 V → 3.3 V conversion at 1 MHz, reducing component count and board area vs two-stage designs. |
Use Scenario: Powering CPU, I/O, and communication modules in DIN-rail mounted industrial PLCs. IC Role / Device Role / Timing Role: Main 5 V/2.5 A regulator with PGOOD signaling to PLC controller for safe startup and fault detection. Use Value: Precision enable with adjustable UVLO ensures reliable operation during brown-out conditions common in factory power grids. |
| Video Surveillance Systems | Asset & Fleet Management |
Use Scenario: Powering CMOS image sensors and ISP SoCs in IP cameras with 12 V PoE input. IC Role / Device Role / Timing Role: Compact 1.8 V/2.5 A regulator with FPWM mode to suppress switching noise near analog video signal paths. Use Value: Pin-selectable FPWM eliminates variable-frequency artifacts in analog video outputs, meeting EN55032 Class B EMI limits. |
Use Scenario: Battery-backed GPS/GSM telemetry units in trucks and containers operating from 12/24 V vehicle systems. IC Role / Device Role / Timing Role: Always-on 3.3 V regulator with 15 µA IQ supporting low-power sleep states between location updates. Use Value: Ultra-low quiescent current extends 12 V lead-acid battery life to >6 months in sleep mode, minimizing maintenance cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM76003RNPR | Same pinout and package; rated for 3.5 A output (vs 2.5 A); higher HS/LS current limits (5.5 A / 4.2 A typ). | Suitable where future-proofing for higher load or margin is required; same PCB layout but higher thermal demand. | Select LM76003RNPR only if >2.5 A continuous current is needed; otherwise LM76002RNPR offers better cost/performance balance. |
| TPS54260DGQR | Lower 2.6-A rating; 3.5–60 V input; no integrated PGOOD or tracking; 500-kHz fixed frequency; larger SOIC-8 package. | Limited feature set - lacks soft-start adjust, voltage tracking, and sync capability; less suitable for multi-rail or EMI-critical systems. | Choose TPS54260DGQR only for cost-sensitive, single-rail applications where footprint and advanced features are secondary. |
Compared with LM76003RNPR and TPS54260DGQR, LM76002RNPR uniquely balances 2.5-A capability, ultra-low IQ, full-feature integration (PGOOD, tracking, FPWM), and compact WQFN packaging - making it optimal for space-constrained, multi-rail industrial power designs requiring reliability and flexibility.
Availability
LM76002RNPR is available at Aetrix Electronics and suitable for telecommunications infrastructure, programmable logic controllers, and video surveillance systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for LM76002RNPR 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 DC-DC conversion.
The LM76002RNPR belongs to TI's LM7600x family of wide-input synchronous buck regulators, designed specifically for industrial and communications equipment needing robust, compact, and feature-rich POL solutions.
FAQ
What is the maximum input voltage rating for LM76002RNPR?
The LM76002RNPR has an absolute maximum input voltage of 65 V across PVIN-to-PGND, with recommended operation up to 60 V. This rating allows safe use in 48 V telecom systems subject to load-dump transients. Exceeding 60 V continuously may reduce lifetime or trigger overvoltage protection; always verify transient margins in final design. The LM76002RNPR datasheet specifies 3.5 V to 60 V as the functional input range.
Does LM76002RNPR support output voltage tracking?
Yes, LM76002RNPR supports output voltage tracking via the SS/TRK pin. When configured with an external ramp source, it synchronizes startup/shutdown timing with another supply - critical for FPGA or processor core/I/O rail sequencing. The LM76002RNPR implements this using a 2-µA current source that charges an external capacitor, enabling precise control of ramp rate and alignment. Tracking is fully supported in the LM76002RNPR datasheet Section 7.3.5.
What thermal management is required for LM76002RNPR at full 2.5-A load?
At 2.5-A continuous load, LM76002RNPR requires proper thermal design: the exposed DAP pad must be soldered to a ≥4 cm² internal/external ground plane with ≥9 thermal vias (0.3-mm diameter, 0.55-mm center-to-center). Without this, junction temperature exceeds 125°C under worst-case ambient. The LM76002RNPR thermal metrics (RθJB = 9.1°C/W) assume this layout - omitting it risks thermal shutdown. Refer to LM76002RNPR Layout Example (Section 10.2) for verified implementation.
Can LM76002RNPR operate with an external 3.3-V bias supply?
Yes, LM76002RNPR supports external bias via the BIAS pin. When VOUT is between 3.3 V and 18 V, TI recommends connecting BIAS directly to VOUT; otherwise, apply a clean 3.3-V or 5-V rail. A 1-µF ceramic capacitor must be placed from BIAS to AGND. Using external bias reduces LM76002RNPR quiescent current by ~50% versus internal VCC-only operation, improving light-load efficiency. This is documented in LM76002RNPR Electrical Characteristics Table 6.5.
Is LM76002RNPR pin-compatible with LM76003RNPR?
Yes, LM76002RNPR and LM76003RNPR share identical pinout, package (RNP), and footprint - they are drop-in replacements. Both use the same 30-pin WQFN (6.0 mm × 4.0 mm) with wettable flanks and DAP. However, LM76003RNPR is rated for 3.5 A output and higher current limits; thermal design must be re-validated if substituting. This compatibility is explicitly confirmed in the LM76002/LM76003 datasheet Device Information table and Pin Configuration section.
LM76002RNPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 30-WFQFN 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):
- 60V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 57V
- Current - Output:
- 2.5A
- Frequency - Switching:
- 300kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 30-WQFN (6x4)
LM76002RNPR FAQ
1.How can I place an order for LM76002RNPR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM76002RNPR 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 LM76002RNPR reliable?
The price and inventory of LM76002RNPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM76002RNPR is usually 5 days.
3.What payment methods are accepted for LM76002RNPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM76002RNPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM76002RNPR?
LM76002RNPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM76002RNPR 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 LM76002RNPR?
For technical support, including LM76002RNPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM76002RNPR requirements.
6.How does Aetrix verify that LM76002RNPR is sourced from the original manufacturer or authorized distributors?
All LM76002RNPR 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 LM76002RNPR meets industry standards.
7.What is the process for return or replacement of LM76002RNPR?
All LM76002RNPR units undergo pre-shipment inspection (PSI). If there is an issue with LM76002RNPR, 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 LM76002RNPR part is unused and in its original packaging.
Return procedure for LM76002RNPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM76002RNPR 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…
