Datasheet Maxim MAX845ESA+T — 数据表

19-0372; Rev 4; 10/97 KIT
ATION
EVALU
E
L
B
A
AVAIL Isolated Transformer Driver
for PCMCIA Applications
____________________________Features
♦ Transformer Driver for Ultra-Thin 5V-µs Transformers The MAX845 consists of an oscillator followed by a toggle flip-flop. The flip-flop generates two 50% duty-cycle
square waves, which are complementary at half the
oscillator frequency (450kHz, min). These two signals
drive the ground-referenced N-channel power switches. Internal circuitry ensures break-before-make action
between the two switches.
A low-power shutdown disables both the switches and
the oscillator, reducing power consumption. An evaluation kit (MAX845EVKIT-MM) is available to evaluate lowprofile 5V 40mA and 5V 100mA applications. ________________________Applications ♦ Isolated DC-to-DC Power Supply for PCMCIA
Applications
♦ 450kHz Minimum Switching Frequency
♦ Ultra-Low Input Supply Current Ripple
♦ Single +5V or +3.3V Supply
♦ 5µW Low-Power Shutdown Mode
♦ 8-Pin SO and µMAX Packages …