資料介紹
The EL7556B is an adjustable
synchronous DC:DC switching
regulator optimized for a 5V input and
1.0V-3.8V output. By combining integrated NMOS power
FETs with a fused-lead package, the EL7556B can supply
up to 6A continuous output current without the use of
external power devices or discrete heat sinks, thereby
minimizing design effort and overall system cost.
On-chip resistorless current sensing is used to achieve
stable, highly efficient, current-mode control. The EL7556B
also incorporates the VCC2DET function to directly interface
with the Intel P54 and P55 microprocessors. Depending on
the state of VCC2DET, the output voltage is internally preset
to 3.5V or a user-adjustable voltage using two external
resistors. In both internal and external feedback modes the
active-high PWRGD output indicates when the regulator
output is within ±10% of the programmed voltage. An onboard
sensor monitors die temperature (OT) for overtemperature
conditions and can be connected directly to
OUTEN to provide automatic thermal shutdown. Adjustable
oscillator frequency and slope compensation allow added
flexibility in overall system design.
synchronous DC:DC switching
regulator optimized for a 5V input and
1.0V-3.8V output. By combining integrated NMOS power
FETs with a fused-lead package, the EL7556B can supply
up to 6A continuous output current without the use of
external power devices or discrete heat sinks, thereby
minimizing design effort and overall system cost.
On-chip resistorless current sensing is used to achieve
stable, highly efficient, current-mode control. The EL7556B
also incorporates the VCC2DET function to directly interface
with the Intel P54 and P55 microprocessors. Depending on
the state of VCC2DET, the output voltage is internally preset
to 3.5V or a user-adjustable voltage using two external
resistors. In both internal and external feedback modes the
active-high PWRGD output indicates when the regulator
output is within ±10% of the programmed voltage. An onboard
sensor monitors die temperature (OT) for overtemperature
conditions and can be connected directly to
OUTEN to provide automatic thermal shutdown. Adjustable
oscillator frequency and slope compensation allow added
flexibility in overall system design.
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