Datasheet
RoHS Compliance Information
| Size in Kbytes | Date |
 |
| LM2653 1.5A High Efficiency Synchronous Switching Regulator |
665
Kbytes |
14-Apr-05 |
Download |
LM2653 1.5A High Efficiency Synchronous Switching Regulator (Japanese)
 |
418 Kbytes |
|
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Package Availability, Models, Samples & Pricing
General Description
The LM2653 switching regulator provides high efficient power conversion over a 100:1 load range (1.5A to 15 mA). This feature makes the LM2653 an ideal fit in battery-powered applications.
Synchronous rectification is used to achieve up to 97% efficiency. At light loads, the LM2653 enters a low power hysteretic or "sleep" mode to keep the efficiency high. In many applications, the efficiency still exceeds 80% at 15 mA load. A shutdown pin is available to disable the LM2653 and reduce the supply current to 7µA.
All the power, control, and drive functions are integrated within the ICs. The ICs contain patented current sensing circuity for current mode control. This feature eliminates the external current sensing resistor required by other current-mode DC-DC converters.
The ICs have a 300 kHz fixed frequency internal oscillator. The high oscillator frequency allows the use of extremely small, low profile components.
Protection features include thermal shutdown, input undervoltage lockout, adjustable soft-start, cycle by cycle current limit, output overvoltage and undervoltage protections.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LM2653MTC-ADJ | ABCD150 | 0 | 34175 | 0 | 0 | 4234000 | 1 | 1201409060
|
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LM2653MTCX-ADJ | ABCD150 | 0 | 34175 | 0 | 0 | 4234000 | 1 | 1201409060
|
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-1133: Application Note 1133 LM2653EVAL 1.5A Synchronous Switching Regulator Evaluation Board |
76
Kbytes |
4-Oct-04 |
Download |
More Application Notes
| Title | Size in Kbytes |
Date |
|
| AN-1143: Application Note 1143 LM2651_3.3V_EVAL 1.5A High Efficiency Synchronous Switching Regulator Evaluation Board |
150
Kbytes |
24-Jul-08 |
Download |
| AN-1147: Application Note 1147 LM2651_EVAL 1.5A High Efficiency Synchronous Switching Regulator Evaluation Board |
149
Kbytes |
2-Oct-07 |
Download |
| AN-1215: Application Note 1215 LM2655 2.5A Synchronous Switching Regulator Evaluation Board |
307
Kbytes |
10-May-04 |
Download |
| AN-1520: Application Note 1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages |
2176
Kbytes |
7-Sep-06 |
Download |
AN-1520 (Chinese): Application Note 1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages
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849 Kbytes |
|
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| AN-1071: Application Note 1071 Information About the LM2650 Evaluation Board Rev. 1 |
105
Kbytes |
4-Oct-04 |
Download |
AN-1071 (Japanese): Application Note 1071 Information About the LM2650 Evaluation Board Rev. 1
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279 Kbytes |
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[Information as of 8-Nov-2009]
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Switch On Resistance
