Datasheet Linear Technology LT3988 — Даташит

LT3988
Dual 60V Monolithic 1A
Step-Down Switching
Regulator
Description Features Wide Input Range: Operation from 4.1V to 60V Overvoltage Lockout Protects Circuit Through 80V Transients
n Two 1A Output Switching Regulators with Internal
Power Switches
n Short Circuit Robust
n Adjustable 250kHz to 2.5MHz Switching Frequency,
Synchronizable Over the Full Range
n Integrated Boost Diodes
n Integrated Loop Compensatio Anti-Phase Switching Reduces Ripple
n Low Shutdown I ( 125°C tON(MIN) =
200ns) and tOFF(MIN) = 240ns. fMAX1 is the frequency at
which the minimum duty cycle is exceeded. The regulator
will skip ON pulses in order to reduce the overall duty cycle
3988f 9 LT3988
Applications Information
at frequencies above fMAX1. It will continue to regulate but
with increased inductor current and increased output ripple.
fMAX2 is the frequency at which the maximum duty cycle
is exceeded. If there is sufficient charge on the BOOST
capacitor, the regulator will skip OFF periods to increase …