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Power Circuits / Switching Regulator or Controllers / LM5642MH/NOPB
Datasheets
LM5642MH/NOPB by:
Texas Instruments
National Semiconductor Corporation
Texas Instruments
Not Found

4.5-36V, Current Mode Dual Synchronous Buck Controller with Oscillator Synchronization 28-HTSSOP

Part Details for LM5642MH/NOPB by Texas Instruments

Results Overview of LM5642MH/NOPB by Texas Instruments

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LM5642MH/NOPB Information

LM5642MH/NOPB 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.

Available Datasheets

Part # Manufacturer Description Datasheet
DS96174CN/NOPB Rochester Electronics LLC DS96174 - Line Driver, 4 Func, 4 Driver, BIPolar, PDIP16
LM611IM/NOPB Rochester Electronics LLC LM611IM - Operational Amplifier, 7000uV Offset-Max, BIPolar

Price & Stock for LM5642MH/NOPB

Part # Distributor Description Stock Price Buy
DISTI # LM5642MH/NOPB-ND
DigiKey IC REG CTRLR BUCK 28ETSSOP Min Qty: 1 Lead time: 6 Weeks Container: Tube 607
In Stock
  • 1 $3.9700
  • 10 $3.0280
  • 48 $2.6560
  • 144 $2.5412
$2.5412 / $3.9700 Buy Now
DISTI # 926-LM5642MH/NOPB
Mouser Electronics Switching Controllers 4.5-36V Current Mod e Dual Synchronous B A 926-LM5642MHX/NOPB RoHS: Compliant 174
  • 1 $3.9700
  • 10 $3.0300
  • 25 $2.6600
  • 96 $2.5400
$2.5400 / $3.9700 Buy Now
DISTI # V99:2348_07282498
Arrow Electronics DC/DC Cntrlr Dual-OUT Step Down 226kHz 28-Pin HTSSOP EP Tube RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 6 Weeks Date Code: 1829 Americas - 27
  • 0 $2.6149
  • 1 $1.0958
  • 10 $1.0808
$1.0808 / $2.6149 Buy Now
DISTI # 63402264
Verical DC/DC Cntrlr Dual-OUT Step Down 226kHz 28-Pin HTSSOP EP Tube RoHS: Compliant Min Qty: 3 Package Multiple: 1 Date Code: 1829 Americas - 27
  • 3 $1.0958
  • 10 $1.0808
$1.0808 / $1.0958 Buy Now

Part Details for LM5642MH/NOPB

LM5642MH/NOPB CAD Models

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LM5642MH/NOPB Part Data Attributes

Parametric Data
LM5642MH/NOPB Texas Instruments
Buy Now Datasheet
Compare Parts:
LM5642MH/NOPB Texas Instruments 4.5-36V, Current Mode Dual Synchronous Buck Controller with Oscillator Synchronization 28-HTSSOP
Select a part to compare:
Pbfree Code Yes
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer TEXAS INSTRUMENTS INC
Part Package Code SSOP
Package Description HTSSOP-28
Pin Count 28
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Samacsys Manufacturer Texas Instruments
Additional Feature ALSO OPERATES IN ADJUSTABLE MODE FROM 1.3V TO 32.4
Analog IC - Other Type DUAL SWITCHING CONTROLLER
Control Mode CURRENT-MODE
Control Technique PULSE WIDTH MODULATION
Input Voltage-Max 36 V
Input Voltage-Min 4.5 V
Input Voltage-Nom 5 V
JESD-30 Code R-PDSO-G28
JESD-609 Code e3
Length 9.7 mm
Moisture Sensitivity Level 1
Number of Functions 1
Number of Outputs 2
Number of Terminals 28
Operating Temperature-Max 125 °C
Operating Temperature-Min -40 °C
Output Current-Max 20 A
Output Voltage-Max 34 V
Output Voltage-Min 1.236 V
Output Voltage-Nom 5 V
Package Body Material PLASTIC/EPOXY
Package Code HTSSOP
Package Shape RECTANGULAR
Package Style SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel) 260
Qualification Status Not Qualified
Seated Height-Max 1.1 mm
Surface Mount YES
Switcher Configuration PUSH-PULL
Switching Frequency-Max 250 kHz
Temperature Grade AUTOMOTIVE
Terminal Finish Matte Tin (Sn)
Terminal Form GULL WING
Terminal Pitch 0.65 mm
Terminal Position DUAL
Time@Peak Reflow Temperature-Max (s) 30
Width 4.4 mm

Alternate Parts for LM5642MH/NOPB

This table gives cross-reference parts and alternative options found for LM5642MH/NOPB. 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 LM5642MH/NOPB, 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
LM5642MHX/NOPB National Semiconductor Corporation Check for Price IC DUAL SWITCHING CONTROLLER, 226 kHz SWITCHING FREQ-MAX, PDSO28, ROHS COMPLIANT, TSSOP-28, Switching Regulator or Controller LM5642MH/NOPB vs LM5642MHX/NOPB
LM5642MHX/NOPB Texas Instruments $2.0073 4.5-36V, Current Mode Dual Synchronous Buck Controller with Oscillator Synchronization 28-HTSSOP LM5642MH/NOPB vs LM5642MHX/NOPB
LM5642MHX Texas Instruments Check for Price DUAL SWITCHING CONTROLLER, 226kHz SWITCHING FREQ-MAX, PDSO28, TSSOP-28 LM5642MH/NOPB vs LM5642MHX
LM5642MHX/NOPB Rochester Electronics LLC Check for Price DUAL SWITCHING CONTROLLER, 226kHz SWITCHING FREQ-MAX, PDSO28, ROHS COMPLIANT, TSSOP-28 LM5642MH/NOPB vs LM5642MHX/NOPB
LM5642MHX National Semiconductor Corporation Check for Price IC DUAL SWITCHING CONTROLLER, 226 kHz SWITCHING FREQ-MAX, PDSO28, TSSOP-28, Switching Regulator or Controller LM5642MH/NOPB vs LM5642MHX
LM5642MH/NOPB National Semiconductor Corporation Check for Price IC DUAL SWITCHING CONTROLLER, 226 kHz SWITCHING FREQ-MAX, PDSO28, ROHS COMPLIANT, TSSOP-28, Switching Regulator or Controller LM5642MH/NOPB vs LM5642MH/NOPB

LM5642MH/NOPB Related Parts

LM5642MH/NOPB Frequently Asked Questions (FAQ)

  • A good PCB layout for the LM5642MH involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the input and output traces. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.

  • To ensure stability, ensure that the output capacitor is within the recommended range, the input capacitor is properly sized, and the feedback resistors are chosen to provide a stable gain. Additionally, ensure that the device is operated within its recommended operating conditions.

  • The LM5642MH can handle input voltages up to 42V, but it's recommended to operate within the recommended input voltage range of 4.5V to 36V for optimal performance and reliability.

  • The LM5642MH is rated for operation up to 125°C, but its performance may degrade at high temperatures. Ensure that the device is properly heat-sinked and operated within its recommended operating conditions to ensure reliability.

  • To troubleshoot issues, start by verifying the input voltage, output voltage, and feedback resistors. Check for proper PCB layout, decoupling, and thermal management. Use an oscilloscope to measure the output voltage and input voltage ripple. Consult the datasheet and application notes for guidance.