Datasheets
Application Notes
Other Technical Documents
Part Number(s)
(NSID) | Description | Availability | Current Reported Stock | Budgetary Pricing | Pack
Size |
|---|
LM3207TL-2.53EV
| 650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers | Full production
|
| $74.00 each | 1 |
| Descrioption:
The LM3207 is a DC-DC converter optimized for powering WCDMA/CDMA RF power amplifiers (PAs) from a single Lithium-Ion cell; however, they may be used in many other applications. It steps down an input voltage from 2.7V to 5.5V to a variable output voltage from 0.8V (typ.) to 3.6V (typ). Output voltage is set using a VCON analog input for controlling power levels and efficiency of the RF and PA.
The LM3207 also provides a regulated reference voltage (V-ref) required by linear RF power amplifiers through an integrated LDO with a nominal output voltage of 2.875 and maximum Iref of 10 mA.
The LM3207 is available in a 9-pin lead free micro SMD package. High switching frequency (2MHz) allows use of surgace-mount components. Only four small external surface-mount components are required, an inductor, and three ceramic capacitors.
The LM3207 evaluation board is a working demonstration of a step down DC-DC converter. The application note contains information about the evaluation board and board layout considerations. For further information on buck converter topology, device electrical characteristics, and component selection please refer to the LM3207 datasheet.
Features:
- 2 MHz (typ.) PWM Switching Frequency
- Operates from a single Li-Ion cell (2.7V to 5.5V)
- Variable Output Voltage (0.8V to 3.6V)
- 650mA Maximum load capability
- High Efficiency (95% Typ at 3.9VIN, 3.4VOUT at 400mA) from internal synchronous rectification
- Integrated 2.875V Vref LDO
- Regulated LDO Output up to 10mA max
- Fast 3microS Vref LDO On/Off Time
- 9-pin micro SMD Package
- Current Overload Protection
- Thermal Overload Protection
- 8-Pin microSMD (Lead Free) Package
Applications:
- Cellular Phones
- Hand-Held Radios
- RF PC Cards
- Battery Powered RF Devices
|
Part Number(s)
(NSID) | Description | Availability | Current Reported Stock | Budgetary Pricing | Pack
Size |
|---|
LM3207TLEV
| 650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers | Full production
|
| $74.00 each | 1 |
| Description:
The LM3207 is a DC-DC converter optimized for powering WCDMA/CDMA RF power amplifiers (PAs) from a single Lithium-Ion cell; however they may be used in many other applications. It steps down an input voltage from 2.7V to 5.5V to a variable output voltage from 0.8V (typ.) to 3.6V (typ.). Output voltage is set using a VCON analog input for controlling power levels and efficiency of the RF and PA.
The LM3207 also provides a regulated reference voltage (V-ref) required by linear RF power amplifiers through an integrated LDO with a nominal output voltage of 2.875 and maximum Iref of 10mA.
The LM3207 is available in a 9-pin lead free micro SMD package. High switching frequency (2MHz) allows use of surface-mount components. Only four small external surface-mount components are required, an inductor and three ceramic capacitory.
The LM3207 evaluation board is a working demonstration of a step down DC-DC converter. The application note contains information about the evaluation board and board layout considerations. For further information on buck converter topology, device electrical characteristics, and component selection, please refer to the LM3207 datasheet.
Features:
- 2MHz (typ.) PWM Switching Frequency
- Operates from a single Li-Ion cell (2.7V to 5.5V)
- Variable Output Voltage (0.8V to 3.6V)
- 650mA Maximum load capability
- High Efficiency (95% Typ at 3.9VIN, 3.4VOUT at 400mA) from internal synchronous rectification
- Integrated 2.875 V Vref LDO
- Regulated LDO Output up to 10mA max
- Fast 3microS Vref LDO On/Off Time
- 9-pin micro SMD Package
- Current Overload Protection
- Thermal Overload Protection
Applications:
- Cellular Phones
- Hand-Held Radios
- RF PC Cards
- Battery Powered RF Devices
|
National Semiconductor follows the provisions of the Product Stewardship Guide for Customers
(
CSP-9-111C1)
and Banned Substances and Materials of Interest Specification
(
CSP-9-111S2)
for regulatory environmental compliance. Details may be found at:
www.national.com/en/packaging/greennopb.html.
Lead free products are RoHS compliant.
Lead Free product status is available through the search tool located
here
All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.
Moisture Sensitivity Level Data for LM3207.
A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.
National's certificate of product compliance for LM3207 is located at RoHS Status.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LM3207TL-2.53 | CMOS7 | 0 | 21301 | 0 | 0 | 1584000 | 3 | 449464325
|
|
LM3207TLX | CMOS7 | 0 | 21301 | 0 | 0 | 1584000 | 3 | 449464325
|
|
LM3207TLX-2.53 | CMOS7 | 0 | 21301 | 0 | 0 | 1584000 | 3 | 449464325
|
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.
All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.
Moisture Sensitivity Level Data for LM3207.
A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.
National's certificate of product compliance for LM3207 is located at RoHS Status.
