Datasheet
RoHS Compliance Information
| Size in Kbytes | Date |
 |
| LM26400Y Dual 2A, 500kHz Wide Input Range Buck Regulator |
2456
Kbytes |
24-Aug-07 |
Download |
LM26400Y Dual 2A, 500kHz Wide Input Range Buck Regulator (Japanese)
 |
2596 Kbytes |
|
 |
Package Availability, Models, Samples & Pricing
General Description
The LM26400Y is a monolithic, two-output fixed frequency PWM step-down DC/DC regulator in a 16-pin LLP or thermally enhanced
ETSSOP package. With a minimum number of external components and internal loop compensation, the LM26400Y is easy to use.
The ability to drive 2A loads with an internal 175mΩ NMOS switch using state-of-the-art 0.5µm BiCMOS technology results in
a high-power density design. The world class control circuitry allows for an ON-time as low as 40 ns, thus supporting high-frequency
conversion over the entire input range of 3V to 20V and down to an output voltage of only 0.6V. The LM26400Y utilizes peak
current-mode control and internal compensation to provide high-performance regulation over a wide range of line and load conditions.
Switching frequency is internally set to 500kHz, optimal for a broad range of applications in terms of size versus thermal
tradeoffs. Given a non-synchronous architecture, efficiencies above 90% are easy to achieve. External shutdown is included,
enabling separate turn-on and turn-off of the two channels. Additional features include programmable soft-start circuitry
to reduce inrush current, pulse-by-pulse current limit and frequency foldback, integrated bootstrap structure and thermal
shutdown.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LM26400YMH | PVIP050 | 0 | 9960 | 0 | 0 | 855000 | 5 | 242608584
|
|
LM26400YMHX | PVIP050 | 0 | 9960 | 0 | 0 | 855000 | 5 | 242608584
|
|
LM26400YSD | PVIP050 | 0 | 9960 | 0 | 0 | 855000 | 5 | 242608584
|
|
LM26400YSDE | PVIP050 | 0 | 9960 | 0 | 0 | 855000 | 5 | 242608584
|
|
LM26400YSDX | PVIP050 | 0 | 9960 | 0 | 0 | 855000 | 5 | 242608584
|
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.
Design Tools
| Title | Size in Kbytes |
Date |
|
|
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| Article - Reducing Buck Converter Input Capacitance through Multi-Phasing and Clock Synchronization |
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View |
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Application Notes
| Title | Size in Kbytes |
Date |
|
| AN-1600: Application Note 1600 LM26400Y Demonstration Board |
191
Kbytes |
9-Mar-07 |
Download |
AN-1600 (Chinese): Application Note 1600 LM26400Y Demonstration Board
|
270 Kbytes |
|
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[Information as of 7-Nov-2009]
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