My Inquiry
My Account
Texas Instruments LM27341QMYX/NOPB
- Part No.:
- LM27341QMYX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LM27341QMYX/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1.5A 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,400
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM27341QMYX/NOPB from Texas Instruments is a monolithic, 2-MHz, peak current-mode PWM step-down DC-DC regulator in a 10-pin WSON (3 mm × 3 mm) package, delivering up to 1.5 A output current with 1% internal reference accuracy, 70-nA shutdown current, and frequency synchronization support from 1 MHz to 2.35 MHz. It serves as a compact, high-efficiency local power supply for FPGA core rails and USB-powered devices.
For engineers reviewing the LM27341QMYX/NOPB datasheet, LM27341QMYX/NOPB pinout, LM27341QMYX/NOPB application, or LM27341QMYX/NOPB equivalent, key selection criteria include input voltage range (3 V to 20 V), output voltage adjustability (1 V to 18 V), thermal shutdown at 165°C, minimum on-time of 65 ns, and internal 150-mΩ NMOS switch performance under automotive-grade operating conditions.
Technical Context
The LM27341QMYX/NOPB implements peak current-mode control with internal compensation and fixed 2-MHz oscillator, enabling stable regulation with minimal external components. Its architecture integrates a 150-mΩ NMOS power switch, bootstrap LDO (3.9 V output), and synchronous-ready SW node capable of supporting external catch diodes or synchronous rectifiers.
It features cycle-by-cycle current limiting (2 A min), frequency foldback during overcurrent (down to 220 kHz), output overvoltage protection (1.13 × VREF), and undervoltage lockout with 470 mV hysteresis. The device operates across –40°C to +125°C junction temperature and supports thermal shutdown recovery with 15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 20 V - supports wide-range industrial and automotive inputs including 12-V bus and USB PD sources. |
| Max Output Current | 1.5 A - sufficient for low-power FPGA cores, microcontroller I/O rails, and USB peripheral supplies. |
| Switching Frequency | 2 MHz (internal) or 1–2.35 MHz (synchronized) - enables use of sub-2.2-µH inductors and chip-scale ceramic capacitors. |
| Feedback Reference | 1.0 V ±1% - ensures precise output regulation across temperature and line variations. |
| Shutdown Current | 70 nA - minimizes battery drain in always-on systems such as automotive infotainment standby modes. |
| Min On-Time | 65 ns - allows high step-down ratios (e.g., 12 V → 1.2 V) at 2 MHz without pulse-skipping instability. |
| Thermal Shutdown | 165°C activation with 15°C hysteresis - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
LM27341QMYX/NOPB uses a 10-pin WSON package (3.00 mm × 3.00 mm, 0.5-mm pitch) with exposed thermal pad (DAP) connected to GND for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 SW | Power switch output | Connects directly to inductor and catch diode; carries full switching current and requires low-inductance layout. |
| 3 BOOST | Bootstrap supply node | Drives NMOS gate via external capacitor; must maintain ≥3 V above SW to ensure full switch enhancement. |
| 4 EN | Enable control input | Logic-high (>1.8 V) enables regulation; logic-low (<0.4 V) enters ultra-low-power shutdown mode. |
| 5 SYNC | Frequency sync input | Accepts external clock (1–2.35 MHz); grounding selects internal 2-MHz oscillator. |
| 6 FB | Feedback input | Senses output voltage via resistor divider; regulates VOUT = 1 V × (1 + R1/R2). |
| 7 GND | Signal and power ground | Reference for FB, EN, SYNC; place feedback bottom resistor adjacent to minimize noise coupling. |
| 8 AVIN | Analog supply input | Powers internal error amplifier, oscillator, and logic; bypass with 0.1-µF ceramic capacitor. |
| 9, 10 PVIN | Power stage supply | High-current input for NMOS source; requires low-ESR bulk capacitance near pins 9/10 and DAP. |
| DAP | Thermal pad / GND | Exposed copper pad tied to PCB ground plane; essential for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Internal 150-mΩ NMOS switch | Enables 1.5-A continuous output without external MOSFETs, reducing BOM count and board area. |
| Peak current-mode control | Provides inherent cycle-by-cycle current limiting and fast transient response without external compensation. |
| 1% accurate internal reference | Guarantees ±1% output voltage tolerance over temperature and line, eliminating need for precision external resistors. |
| 65-ns minimum on-time | Supports high-frequency operation with high input-to-output voltage ratios while maintaining PWM stability. |
| Frequency synchronization | Allows EMI management by aligning switching edges with system clocks or avoiding sensitive bands like AM radio. |
Applications
| Automotive Infotainment Power | USB-Powered Peripheral Supply |
|---|---|
Use Scenario: Local 12-V battery rail conversion to 3.3-V or 1.8-V logic supply in head units and display modules. IC Role / Device Role / Timing Role: Primary buck regulator providing regulated core voltage for SoC, audio codec, and display interface ICs. Use Value: AEC-Q100 Grade 1 qualification (LM27341-Q1 variant), 125°C max junction rating, and UVLO hysteresis ensure reliable cold-crank operation. |
Use Scenario: Step-down from 5-V USB port to 3.3-V or 1.2-V supply for Bluetooth modules, sensors, or MCU peripherals. IC Role / Device Role / Timing Role: Compact, self-contained DC-DC converter replacing linear regulators to improve efficiency and reduce thermal load. Use Value: 70-nA shutdown current extends battery life in portable accessories; 2-MHz operation avoids audible noise and simplifies filtering. |
| HDD Core Voltage Regulation | Set-Top Box Local Power |
Use Scenario: Generating 1.2-V or 1.5-V core supply for 2.5-inch HDD controller ASICs from 12-V or 5-V intermediate rail. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with fast load transient response to handle disk spin-up current surges. Use Value: 65-ns minimum on-time and internal soft-start (1 ms) prevent output overshoot during sudden load changes. |
Use Scenario: Providing stable 3.3-V or 5-V auxiliary rail for demodulator, tuner, and memory subsystems in digital cable receivers. IC Role / Device Role / Timing Role: Synchronized buck converter sharing clock with video processing ICs to suppress beat frequencies and clean power rails. Use Value: SYNC pin enables deterministic switching alignment across multiple converters, reducing conducted EMI peaks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM27342QMYX/NOPB | 2-A output capability, higher current limit (2.5 A min), identical pinout and feature set. | Better suited for higher-current loads such as multi-core SoCs or dual-rail FPGAs. | Select when >1.5 A continuous output is required; same PCB layout but verify thermal margin. |
| TPS54202DRCT | 2-A output, integrated MOSFETs, 4.5–17-V input, 500-kHz–2.5-MHz adjustable frequency, no BOOST pin. | Lacks bootstrap architecture; uses integrated high-side/low-side FETs instead of external diode option. | Choose for simplified design with no external diode needed; trade-off is reduced flexibility in high-VIN, low-VOUT designs. |
Compared with LM27342QMYX/NOPB, the LM27341QMYX/NOPB offers lower cost and thermal footprint for ≤1.5-A applications; versus TPS54202DRCT, it provides superior minimum on-time (65 ns vs 100 ns) and bootstrap-based gate drive for wider VIN/VOUT ratios.
Availability
LM27341QMYX/NOPB is available at Aetrix Electronics and suitable for automotive infotainment systems, USB-powered peripherals, and set-top box power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LM27341QMYX/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 technologies, with decades of expertise in high-reliability power conversion ICs.
The LM2734x family was designed specifically for space-constrained, high-frequency DC-DC applications in automotive, industrial, and consumer electronics where small size, low quiescent current, and robust thermal performance are critical.
FAQ
What is the maximum recommended input voltage for LM27341QMYX/NOPB?
The absolute maximum rated input voltage for LM27341QMYX/NOPB is 24 V across AVIN and PVIN pins, but the recommended operating range is 3 V to 20 V per TI SNVS497F datasheet Section 6.3. Exceeding 20 V may trigger overvoltage stress on internal circuitry despite surviving short-term absolute ratings.
Does LM27341QMYX/NOPB require an external catch diode?
Yes, LM27341QMYX/NOPB requires an external Schottky catch diode (e.g., RB050M-30) connected from SW to GND to provide freewheeling path during NMOS off-time. Unlike synchronous buck controllers, it does not integrate a low-side switch, so the diode is mandatory for proper operation.
Can LM27341QMYX/NOPB operate with a 2.5-V input supply?
No - LM27341QMYX/NOPB has a minimum recommended input voltage of 3 V per Section 6.3 of the datasheet. At 2.5 V, UVLO prevents startup (threshold is 2.75 V typical), and insufficient BOOST voltage margin would compromise NMOS gate drive, risking erratic switching or failure to regulate.
How is output voltage set on LM27341QMYX/NOPB?
Output voltage is set using a resistor divider from VOUT to FB to GND, where VOUT = 1.0 V × (1 + R1/R2). The FB pin senses this divided voltage and adjusts duty cycle to maintain 1.0 V at FB. Layout best practice places R2 directly between FB and GND pin 7 to minimize noise-induced regulation error.
Is LM27341QMYX/NOPB qualified for automotive applications?
The LM27341QMYX/NOPB is the commercial-grade version; its automotive-qualified counterpart is LM27341QMYRQ1 (AEC-Q100 Grade 1). While LM27341QMYX/NOPB shares identical electrical specs and WSON packaging, it lacks automotive-specific qualification testing and documentation required for safety-critical vehicle systems.
LM27341QMYX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 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):
- 3V
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 18V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-PowerPad
LM27341QMYX/NOPB FAQ
1.How can I place an order for LM27341QMYX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM27341QMYX/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 LM27341QMYX/NOPB reliable?
The price and inventory of LM27341QMYX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM27341QMYX/NOPB is usually 5 days.
3.What payment methods are accepted for LM27341QMYX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM27341QMYX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM27341QMYX/NOPB?
LM27341QMYX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM27341QMYX/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 LM27341QMYX/NOPB?
For technical support, including LM27341QMYX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM27341QMYX/NOPB requirements.
6.How does Aetrix verify that LM27341QMYX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM27341QMYX/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 LM27341QMYX/NOPB meets industry standards.
7.What is the process for return or replacement of LM27341QMYX/NOPB?
All LM27341QMYX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM27341QMYX/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 LM27341QMYX/NOPB part is unused and in its original packaging.
Return procedure for LM27341QMYX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM27341QMYX/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…
