Datasheet Analog Devices LT1940 — Ficha de datos

LT1940/LT1940L
Dual Monolithic 1.4A,
1.1MHz Step-Down
Switching Regulator
U FEATURES
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■ DESCRIPTIO The LT®1940 is a dual current mode PWM step-down
DC/DC converter with internal 2A power switches. Both converters are synchronized to a single 1.1MHz oscillator and
run with opposite phases, reducing input ripple current. The
output voltages are set with external resistor dividers, and
each regulator has independent shutdown and soft-start
circuits. Each regulator generates a power-good signal
when its output is in regulation, easing power supply sequencing and interfacing with microcontrollers and DSPs. Wide Input Voltage Range
LT1940: 3.6V to 25V
LT1940L: 3.6V to 7V
Two 1.4A Output Switching Regulators with
Internal Power Switches
Constant 1.1MHz Switching Frequency
Anti-Phase Switching Reduces Ripple
Independent Shutdown/Soft-Start Pins …