Features: `Regulated VOUT with ±3% (5.0V, 4.1V, and 3.3V options) or ±4% (1.8V option) accuracy
` Standard output voltages of 1.8V, 3.3V, 4.1V, and 5.0V
` Custom output voltages available from 1.8V to 5.0V in 100 mV increments with volume order
` 2.5V to 5.5V input voltage range
` Up to 90mA (5.0V, 4.1V, and 1.8V options) or 70mA (3.3V option) output current
` >75% average efficiency
` Uses few, low-cost external components
` Very small solution size
` 375 A typical operating current
` 2.3 A typical shutdown current
` 1 MHz typical switching frequency
` Architecture and control methods provide high load current and good efficiency
` MSOP-10 package
`Over-temperature protectionApplication· White LED display backlights
· 1-cell Lilon battery-operated equipment including PDAs,hand-held PCs, cellular phones
· Flat panel displays
· Hand-held instruments
· Li-Ion, NiCd, NiMH, or alkaline battery powered systemsPinout
Specifications
| Output Current |
90 mA |
| Output Min |
1.8, 3.3, 4.1 Volt |
| Output Max |
1.8, 3.3, 4.1 Volt |
| Adjustable Output |
No |
| Input Min Voltage |
2.5 Volt |
| Input Max Voltage |
5.5 Volt |
| Efficiency (peak) |
75 % |
| Frequency Min |
1000 kHz |
| Frequency Max |
1000 kHz |
| Adj Switch Frequency |
No |
| On/Off Pin |
Yes |
| Quiescent Current |
0.375 mA |
| Special Features |
Auto buck/boost multi-gain architecture |
| PWM Mode |
Multi-gain Switched Capacitor |
| Topology |
Boost, Buck |
| Step-Down |
Yes |
| Step-Up |
Yes |
| Inverting |
No |
| RegType |
Switched Cap Regulator |
| Temperature Min |
-40 deg C |
| Temperature Max |
85 deg C |
| View Using Catalog |
If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
All Pins .....................................................−0.5V to 5.6V
Power Dissipation (TA = 25°C)
(Note 2).............................................. Internally Limited
TJMAX (Note 2) ....................................................150°C
JA (Note 2) ...................................................250°C/W
Storage Temperature ......................−65°C to +150°C
Lead Temperature (Soldering, 5sec.) ..................260°C
ESD Rating (Note 3)
Human Body Model.................................................1.5KV
Machine Model.......................................................100KV
DescriptionThe LM3354 is a CMOS switched capacitor DC/DC converter that produces a regulated output voltage by automatically stepping up (boost) or stepping down (buck) the input voltage. It accepts an input voltage between 2.5V and 5.5V. The LM3354 is available with standard output voltages of 1.8V, 3.3V, 4.1V (ideal for white LED applications), and 5.0V. If other output voltage options between 1.8V and 5.0V are desired, please contact your National Semiconductor representative.
The LM3354's proprietary buck-boost architecture enables up to 90mA of load current at an average efficiency greater than 75%. Typical operating current is only 375 µA and the typical shutdown current is only 2.3 µA.
The LM3354 is available in a 10-pin MSOP package. This package has a maximum height of only 1.1 mm.
The high efficiency of the LM3354, low operating and shutdown currents, small package size, and the small size of the overall solution make this device ideal for battery powered, portable, and hand-held applications.
See the LM3352 for up to 200mA of output current or the LM3355 for up to 50mA of output current.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM3354MM-1.8 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3354MM-3.3 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3354MM-3.7 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3354MM-4.1 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3354MM-5.0 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3354MMX-3.7 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM3354MMX-5.0 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
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-1214: Application Note 1214 LM3354/5 Evaluation Board |
167 Kbytes |
10-May-04 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
More Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1142: Application Note 1142 LM2661/3/4 Evaluation Board |
186 Kbytes |
4-Oct-04 |
Download |
| AN-225: Application Note 225 IC Temperature Sensor Provides Thermocouple Cold-Junction Compensation |
89 Kbytes |
2-Oct-02 |
Download |
| AN-272: Application Note 272 Op Amp Booster Designs |
382 Kbytes |
2-Oct-02 |
Download |
| AN-295: Application Note 295 A High Performance Industrial Weighing System |
117 Kbytes |
4-Oct-04 |
Download |
| AN-298: Application Note 298 Isolation Techniques for Signal Conditioning |
379 Kbytes |
2-Oct-02 |
Download |
| AN-286: Application Note 286 Applications of the LM392 Comparator Op Amp IC |
135 Kbytes |
2-Oct-02 |
Download |
| AN-1144: Application Note 1144 Maximizing Start-up Loads with the LM3352 Regulated Buck/Boost Switched Capacitor Converter |
62 Kbytes |
4-Oct-04 |
Download |
| AN-1251: Application Note 1251 Switched Capacitor Circuits Provide Efficient and Functional White LED Drive |
55 Kbytes |
26-Sep-02 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
LM3354 Data Sheet
