規格
| 屬性 | 價值 |
| Supplier | Texas Instruments |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Obsolete |
| OutputType | Transistor Driver |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| NumberofOutputs | 1 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 3V ~ 6V |
| Frequency-Switching | 50kHz ~ 1MHz |
| DutyCycle(Max) | 80% |
| SynchronousRectifier | Yes |
| ClockSync | No |
| ControlFeatures | Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 14-TSSOP (0.173, 4.40mm Width) |
概述
Description
LM2743MTCX is a Texas Instruments DC‑DC switch-mode regulator controller. It drives external N‑channel MOSFETs to create high‑efficiency buck converters and is suitable for multi‑rail power supplies (e.g., CPU, ASIC, automotive and telecommunications applications).
Key features (typical):
- Current‑mode PWM control with adjustable switching frequency
- Soft‑start, enable/shutdown, UVLO
- Overcurrent/overvoltage protection and fault reporting
- Supports multiple rails from a single controller (with external FETs and inductors)
- Wide input range for automotive/industrial use
- Synchronous or asynchronous configurations depending on external FETs
How to use:
- Requires external MOSFETs, inductors, and diodes (or uses synchronous rectification)
- Configured for desired output voltages via feedback networks
- Designed for applications needing fast transient response and tight regulation
Package note:
- MTCX denotes a TI packaging/reel option for this device; check the datasheet for exact pinout and package details.
For precise electrical specs and pinout, consult the TI LM2743MTCX datasheet and product page.
Key features (typical):
- Current‑mode PWM control with adjustable switching frequency
- Soft‑start, enable/shutdown, UVLO
- Overcurrent/overvoltage protection and fault reporting
- Supports multiple rails from a single controller (with external FETs and inductors)
- Wide input range for automotive/industrial use
- Synchronous or asynchronous configurations depending on external FETs
How to use:
- Requires external MOSFETs, inductors, and diodes (or uses synchronous rectification)
- Configured for desired output voltages via feedback networks
- Designed for applications needing fast transient response and tight regulation
Package note:
- MTCX denotes a TI packaging/reel option for this device; check the datasheet for exact pinout and package details.
For precise electrical specs and pinout, consult the TI LM2743MTCX datasheet and product page.
Features
Here are concise features of LM2743MTCX:
- Dual-channel, 2-phase interleaved switching regulator controller
- External MOSFET drive for each channel (external FETs required)
- Wide input voltage range with high efficiency
- Adjustable output voltages via feedback resistors
- Current-mode control with fast transient response
- Soft-start, enable/disable, and tracking controls
- Synchronous operation with fixed or programmable switching frequency
- Protection: overcurrent, overvoltage, thermal shutdown, UVLO
- PWM/PFM modes for improved light-load efficiency
- Suitable for compact designs in a small 16-pin MTCX QFN packaging (thermal pad)
- Dual-channel, 2-phase interleaved switching regulator controller
- External MOSFET drive for each channel (external FETs required)
- Wide input voltage range with high efficiency
- Adjustable output voltages via feedback resistors
- Current-mode control with fast transient response
- Soft-start, enable/disable, and tracking controls
- Synchronous operation with fixed or programmable switching frequency
- Protection: overcurrent, overvoltage, thermal shutdown, UVLO
- PWM/PFM modes for improved light-load efficiency
- Suitable for compact designs in a small 16-pin MTCX QFN packaging (thermal pad)
Pinout
- Pin count: 16 pins (MSOP/TSSOP-16 package, denoted by MTCX suffix).
- Function: Dual, 2-phase interleaved, current‑mode buck regulator controller used to drive two external MOSFETs for step-down conversion (regulates a higher input voltage to a lower output; supports synchronous rectification and programmable switching frequency).
- Function: Dual, 2-phase interleaved, current‑mode buck regulator controller used to drive two external MOSFETs for step-down conversion (regulates a higher input voltage to a lower output; supports synchronous rectification and programmable switching frequency).
Manufacturer
- Manufacturer: Texas Instruments (TI)
- Company type: A multinational American semiconductor company that designs and manufactures analog and embedded processing integrated circuits.
- Company type: A multinational American semiconductor company that designs and manufactures analog and embedded processing integrated circuits.
Application
LM2743MTCX is a dual synchronous buck controller for high‑efficiency DC‑DC power supplies. Common application areas include:
- Point-of-load regulation for CPUs/GPUs and other digital ICs in servers, workstations, telecom, and datacom equipment
- VRMs and multi‑rail supplies in networking gear and data‑centre hardware
- Automotive power management (ECUs, infotainment, battery systems)
- Industrial control, robotics, and instrumentation needing multiple low‑voltage rails
- Portable/battery‑powered devices and solar/battery systems requiring efficient step‑down conversion
- Point-of-load regulation for CPUs/GPUs and other digital ICs in servers, workstations, telecom, and datacom equipment
- VRMs and multi‑rail supplies in networking gear and data‑centre hardware
- Automotive power management (ECUs, infotainment, battery systems)
- Industrial control, robotics, and instrumentation needing multiple low‑voltage rails
- Portable/battery‑powered devices and solar/battery systems requiring efficient step‑down conversion
Package
8-pin MSOP package (MSOP-8).
