text.skipToContent text.skipToNavigation


Wide-Input 2.2MHz Low-Iq Synchronous Buck Controller


Package | PIN: RGE | 24
Temp: S (-40 to 150)
Carrier: Cut Tape
Qty Price
1-9 $4.87
10-24 $4.38
25-99 $4.09
100-249 $3.67
250-499 $3.43
500-749 $2.98
750-999 $2.58
1000+ $2.53


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient OperatingTemperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESDClassification Level C4B
  • VIN: 3.8 V to 65 V (70 V Absolute Maximum)
  • Output: Fixed 3.3 V, 5 V, or Adjustable From
    1.5 V to 15 V with ±0.8% Accuracy
  • Fixed 2.2-MHz or 440-kHz Switching Frequency with ±5% Accuracy
  • High-Side and Low-Side Gate Drive With Slew-Rate Control
  • Optional Frequency Shift by Varying an Analog Voltage or RT Resistor
  • Optional Synchronization to an External Clock
  • Optional Spread Spectrum
  • Shutdown Mode IQ: 10 µA Typical
  • Low Standby Mode IQ: 35 µA Typical
  • 75-mV Current Limit Threshold with ±0.9% Accuracy
  • External Resistor or DCR Current Sensing
  • Output Enable Logic Input
  • Hiccup Mode for Sustained Overload
  • Power-Good Indication Output
  • Selectable Diode Emulation or Forced Pulse-Width Modulation
  • 24-pin VQFN Package With Wettable Flanks
  • Create a Custom Design Using the LM5141-Q1 With the WEBENCH® Power Designer

All trademarks are the property of their respective owners.

Texas Instruments  LM5141QRGETQ1

The LM5141-Q1 is a synchronous buck controller, intended for high voltage wideVIN step-down converter applications. The control method is peak currentmode control. Current mode control provides inherent line feed-forward, cycle-by-cycle currentlimiting, and ease-of-loop compensation. The LM5141-Q1 features slew rate control to simplify thecompliance with CISPR and automotive EMI requirements.

The LM5141-Q1 has two selectable switching frequencies: 2.2 MHz and 440 kHz. Gate driverswith slew rate Control that can be adjusted to reduceEMI.

In light or no-load conditions, the LM5141-Q1 operates in skip cycle mode for improvedlow power efficiency. The LM5141-Q1 has a high voltage bias regulator with automatic switch-over toan external bias to reduce the IQ current from VIN.Additional features include frequency synchronization, cycle-by-cycle current limit, hiccup modefault protection for sustained overload, and power good output.