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Power Circuits / Switching Regulator or Controllers / LM5145RGYT
Datasheets
LM5145RGYT by: Texas Instruments

75V Synchronous Buck Controller With Wide Input Voltage and Duty Cycle Ranges 20-VQFN -40 to 125

Part Details for LM5145RGYT by Texas Instruments

Results Overview of LM5145RGYT by Texas Instruments

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LM5145RGYT Information

LM5145RGYT by Texas Instruments is a Switching Regulator or Controller.
Switching Regulator or Controllers are under the broader part category of Power Circuits.

A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.

Price & Stock for LM5145RGYT

Part # Distributor Description Stock Price Buy
Ameya Holding Limited 100V SYNCHRONOUS BUCK WIDE VIN C 1374
RFQ
CHIPMALL.COM LIMITED Step-down type 6V~75V VQFN-20-EP3.5x4.5 DC-DC Converters ROHS 200
  • 1 $1.9750
  • 10 $1.5879
  • 30 $1.4221
  • 250 $1.2151
  • 500 $1.1229
  • 1,000 $1.0676
$1.0676 / $1.9750 Buy Now
LCSC Step-down type Adjustable 800mV60V 20A 6V75V VQFN-20-EP(3.5x4.5) DC-DC Converters ROHS 9
  • 1 $1.7889
  • 10 $1.4382
  • 30 $1.2880
  • 250 $1.1005
  • 500 $1.0170
  • 1,000 $0.9670
$0.9670 / $1.7889 Buy Now
Win Source Electronics IC REG CTRLR BUCK 20VQFN 129885
  • 32 $1.5730
  • 68 $1.4710
  • 106 $1.4210
  • 152 $1.3190
  • 198 $1.2690
  • 247 $1.2180
$1.2180 / $1.5730 Buy Now

Part Details for LM5145RGYT

LM5145RGYT CAD Models

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LM5145RGYT Part Data Attributes

Parametric Data
LM5145RGYT Texas Instruments
Buy Now Datasheet
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LM5145RGYT Texas Instruments 75V Synchronous Buck Controller With Wide Input Voltage and Duty Cycle Ranges 20-VQFN -40 to 125
Pbfree Code Yes
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer TEXAS INSTRUMENTS INC
Package Description VQFN-20
Reach Compliance Code compliant
ECCN Code EAR99
Date Of Intro 2017-07-05
Samacsys Manufacturer Texas Instruments
Additional Feature ADJUSTABLE OUTPUT VOLATGE RANGE FROM 0.8 TO 60V
Analog IC - Other Type SWITCHING CONTROLLER
Control Mode VOLTAGE-MODE
Control Technique PULSE WIDTH MODULATION
Input Voltage-Max 75 V
Input Voltage-Min 6 V
Input Voltage-Nom 48 V
JESD-30 Code R-PQCC-N20
JESD-609 Code e3
Length 4.3 mm
Moisture Sensitivity Level 2
Number of Functions 1
Number of Outputs 1
Number of Terminals 20
Operating Temperature-Max 125 °C
Operating Temperature-Min -40 °C
Output Current-Max 30 A
Output Voltage-Max 60 V
Output Voltage-Min 0.8 V
Package Body Material PLASTIC/EPOXY
Package Code HQCCN
Package Shape RECTANGULAR
Package Style CHIP CARRIER, HEAT SINK/SLUG
Peak Reflow Temperature (Cel) 260
Seated Height-Max 1 mm
Surface Mount YES
Switcher Configuration BUCK
Switching Frequency-Max 1000 kHz
Temperature Grade AUTOMOTIVE
Terminal Finish MATTE TIN
Terminal Form NO LEAD
Terminal Position QUAD
Time@Peak Reflow Temperature-Max (s) 30
Width 3.5 mm

Alternate Parts for LM5145RGYT

This table gives cross-reference parts and alternative options found for LM5145RGYT. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LM5145RGYT, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
LM5145QRGYRQ1 Texas Instruments Check for Price Automotive 75-V synchronous buck DC/DC controller with wide duty-cycle range 20-VQFN -40 to 150 LM5145RGYT vs LM5145QRGYRQ1

LM5145RGYT Related Parts

LM5145RGYT Frequently Asked Questions (FAQ)

  • The LM5145RGYT can handle input voltages up to 60V, but it's recommended to keep it below 40V for optimal performance and reliability.

  • To ensure stability, make sure to follow the recommended PCB layout guidelines, use a sufficient output capacitor, and add a small ceramic capacitor (e.g., 10nF) between the VIN and GND pins.

  • The minimum input capacitance required is 10uF, but it's recommended to use a larger capacitor (e.g., 22uF) to ensure stable operation and minimize input voltage ripple.

  • The LM5145RGYT is rated for operation up to 125°C, but it's recommended to derate the output current and voltage at higher temperatures to ensure reliability and prevent overheating.

  • The output voltage of the LM5145RGYT can be calculated using the formula: VOUT = (R1 / R2) * (VIN - VREF), where R1 and R2 are the resistors in the feedback network, VIN is the input voltage, and VREF is the internal reference voltage (1.21V).

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