Pinout
Specifications| Output Current | 400 mA |
| Input Min Voltage | 2.8 Volt |
| Input Max Voltage | 5.5 Volt |
| Output Min | 1 Volt |
| Output Max | 3.6 Volt |
| Frequency Min | 500 kHz |
| Frequency Max | 1000 kHz |
| Efficiency (peak) | 96 % |
| On/Off Pin | Yes |
| Error Flag | No |
| SoftStart | Yes |
| Sync Pin | Yes |
| Inverting | No |
| Flyback | No |
| RegType | Switching Regulator |
| Temperature Min | -30 deg C |
| Temperature Max | 85 deg C |
| Adjustable Output | Yes |
| Adj Switch Frequency | Yes |
| PWM Mode | Current |
| Topology | Synchronous Buck |
| Special Features | Pin-selectable PWM/PFM modes, Max Iq in shutdown is 3uA, 2% output accuracy |
| Step-Down | Yes |
| Multiple Output Capability | No |
| Output Power | Undefined Watt |
| Output Voltage | Undefined Volt |
| Output Range | 1.0V to 3.6V |
| Switching Frequency | 600 kHz |
| View Using Catalog |
DescriptionThe LM2614 DC-DC converter is optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell. It steps down an input voltage of 2.8V to 5.5V to an output of 1.0V to 3.6V at up to 400mA (300mA for B grade). Output voltage is set using an analog input to VCON in the application circuit.
The device offers three modes for mobile phones and similar RF PA applications. Fixed-frequency PWM mode minimizes RF interference. A SYNC input allows synchronizing the switching frequency in a range of 500kHz to 1MHz. Low current hysteretic PFM mode reduces quiescent current to 160µA (typ.). Shutdown mode turns the device off and reduces battery consumption to 0.02µA (typ.).
Current limit and thermal shutdown features protect the device and system during fault conditions.
The LM2614 is available in a 10 bump micro SMD package. This packaging uses National's chip-scale micro SMD technology and offers the smallest possible size. A high switching frequency (600kHz) allows use of tiny surface-mount components.
The LM2614 can be dynamically controlled for output voltage changes from 1.0V to 3.6V in <30µs. The device features external compensation to tailor the response to a wide range of operating conditions.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM2614ATL |
ABCD150 |
0 |
31520 |
0 |
0 |
3739000 |
1 |
1060951459 |
| LM2614ATLX |
ABCD150 |
0 |
31520 |
0 |
0 |
3739000 |
1 |
1060951459 |
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.
More Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-87: Application Note 87 Comparing the High Speed Comparators |
249 Kbytes |
1-Oct-02 |
Download |
| AN-1203: Application Note 1203 LM2611 Demoboard |
120 Kbytes |
10-May-04 |
Download |
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LM2614 Data Sheet
