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Power Circuits / Switching Regulator or Controllers / LM5145RGYR
Datasheets
LM5145RGYR by: Texas Instruments

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

Part Details for LM5145RGYR by Texas Instruments

Results Overview of LM5145RGYR by Texas Instruments

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LM5145RGYR Information

LM5145RGYR 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 LM5145RGYR

Part # Distributor Description Stock Price Buy
Bristol Electronics   Min Qty: 2 23
  • 2 $3.0000
  • 8 $2.2500
$2.2500 / $3.0000 Buy Now
Ameya Holding Limited   3477
RFQ
LCSC Step-down type 6V75V VQFN-20-EP(3.5x4.5) DC-DC Converters ROHS 253
  • 1 $1.9415
  • 10 $1.6294
  • 30 $1.4336
  • 100 $1.2316
  • 500 $1.1414
  • 1,000 $1.1031
$1.1031 / $1.9415 Buy Now
MacroQuest Electronics ISO 9001: 2015, ISO 14001:2015, ISO 45001:2018 4680
  • 1 $2.9900
  • 50 $2.7700
  • 100 $2.5500
$2.5500 / $2.9900 Buy Now
Win Source Electronics LM5145RGYR 11380
  • 45 $1.1840
  • 95 $1.1077
  • 145 $1.0695
  • 205 $0.9931
  • 265 $0.9549
  • 330 $0.9167
$0.9167 / $1.1840 Buy Now

Part Details for LM5145RGYR

LM5145RGYR CAD Models

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LM5145RGYR Part Data Attributes

Parametric Data
LM5145RGYR Texas Instruments
Buy Now Datasheet
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LM5145RGYR 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
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 (Sn)
Terminal Form NO LEAD
Terminal Position QUAD
Time@Peak Reflow Temperature-Max (s) 30
Width 3.5 mm

Alternate Parts for LM5145RGYR

This table gives cross-reference parts and alternative options found for LM5145RGYR. 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 LM5145RGYR, 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
LM5145RGYT Texas Instruments $3.5004 75V Synchronous Buck Controller With Wide Input Voltage and Duty Cycle Ranges 20-VQFN -40 to 125 LM5145RGYR vs LM5145RGYT
LM5145QRGYRQ1 Texas Instruments Check for Price Automotive 75-V synchronous buck DC/DC controller with wide duty-cycle range 20-VQFN -40 to 150 LM5145RGYR vs LM5145QRGYRQ1

LM5145RGYR Related Parts

LM5145RGYR Frequently Asked Questions (FAQ)

  • The LM5145RGYR can handle input voltages up to 60V, but it's recommended to keep the input voltage below 40V for optimal performance and reliability.

  • To ensure stability, make sure to use a minimum output capacitance of 10uF, and a maximum ESR of 1 ohm. Also, ensure that the output voltage is within the recommended range of 0.8V to 5.5V.

  • The LM5145RGYR can provide a maximum output current of 1.5A, but it's recommended to keep the output current below 1A for optimal performance and reliability.

  • To configure the LM5145RGYR for a specific output voltage, use the feedback resistors R1 and R2 to set the output voltage. The output voltage can be calculated using the formula: Vout = 0.8V * (1 + R2/R1).

  • The EN (enable) pin is used to enable or disable the regulator. When the EN pin is high, the regulator is enabled, and when it's low, the regulator is disabled. This pin can be used to implement power sequencing or to turn off the regulator when not in use.

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