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LM3678

PinoutSpecificationsOutput Current1000 mAInput Min Voltage2.5 VoltInput Max Voltage5.5 VoltOutput Min0.8 VoltOutput Max1.2 VoltFrequency Min2700 kHzFrequency Max3600 kHzEfficiency (peak)85 %On/Off PinYesError FlagYesSoftStartYesRegTypeSwitching RegulatorTemperature Min-30 deg CTemperature Max85 de...

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SeekIC No. : 004395414 Detail

LM3678: PinoutSpecificationsOutput Current1000 mAInput Min Voltage2.5 VoltInput Max Voltage5.5 VoltOutput Min0.8 VoltOutput Max1.2 VoltFrequency Min2700 kHzFrequency Max3600 kHzEfficiency (peak)85 %On/Off P...

LM3678 Data Sheet

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Part Number:
LM3678
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/26

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Product Details

Description



Pinout




Specifications

Output Current1000 mA
Input Min Voltage2.5 Volt
Input Max Voltage5.5 Volt
Output Min0.8 Volt
Output Max1.2 Volt
Frequency Min2700 kHz
Frequency Max3600 kHz
Efficiency (peak)85 %
On/Off PinYes
Error FlagYes
SoftStartYes
RegTypeSwitching Regulator
Temperature Min-30 deg C
Temperature Max85 deg C
Adjustable OutputNo
PWM ModeVoltage
TopologySynchronous Buck
Step-DownYes
Multiple Output CapabilityYes
Output Range0.8/1.2
Switching Frequency3300 kHz
Regulator FamilySIMPLE SWITCHER
AEC Q-100 Automotive GradeUndefined
Automotive Selection GuideNo
PowerWiseYes
Synchronous RectificationYes
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Description

The LM3678 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.5V to 5.5V. It provides up to 1.5A load current, over the entire input voltage range. LM3678 offers a 0.8V/1.2V option. One of the pair of voltages is set through the VSELECT pin.

LM3678 operates in PWM mode with a fixed frequency of 3.3MHz. Internal synchronous rectification provides high efficiency during PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01µA (typ).

The LM3678 is available in a 3mm x 3mm LLP-10 package. A high switching frequency of 3.3MHz (typ.) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor and two ceramic capacitors, are required (solution size less than 33 mm 2). For voltages other than the voltage shown, please refer to ordering information section or contact National Semiconductor.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM3678SD-1.2 CMOS7 0 16561 0 0 954000 4 270700104
LM3678SDE-1.2 CMOS7 0 16561 0 0 954000 4 270700104
LM3678SDX-1.2 CMOS7 0 16561 0 0 954000 4 270700104

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Application Notes

Title Size in Kbytes Date
AN-1722: Application Note 1722 LM3678 Evaluation Board 506 Kbytes 14-Oct-08 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

More Application Notes

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AN-1682: Application Note 1682 LM3679TL Evaluation Board 3720 Kbytes 14-Oct-08 Download
AN-1395: Application Note 1395 LM3671 Evaluation Board 3838 Kbytes 10-Oct-08 Download
AN-1395 (Chinese): Application Note 1395 LM3671 Evaluation Board
 321 Kbytes   640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
AN-1465: Application Note 1465 LM3673 Evaluation Board 3717 Kbytes 10-Oct-08 Download
AN-1465 (Chinese): Application Note 1465 LM3673 Evaluation Board
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AN-1427: Application Note 1427 LM3674 Evaluation Board 4966 Kbytes 14-Oct-08 Download
AN-1427 (Chinese): Application Note 1427 LM3674 Evaluation Board
 292 Kbytes   640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
AN-1595: Application Note 1595 LM3677 Evaluation Board 2801 Kbytes 14-Oct-08 Download
AN-1536: Application Note 1536 LM3676 Evaluation Board 417 Kbytes 14-Oct-08 Download
AN-1536 (Chinese): Application Note 1536 LM3676 Evaluation Board
 278 Kbytes   640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
AN-1348: Application Note 1348 LM3670 Evaluation Board 3906 Kbytes 9-Oct-08 Download
AN-1348 (Chinese): Application Note 1348 LM3670 Evaluation Board
 257 Kbytes   640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">

If you have trouble printing or viewing PDF file(s), see Printing Problems.




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