Hitachi HA17451AP
the HA17451AP at ambient temperatures up to Ta = 45°C.DESCRIPTION
The HA17451 is a dual-channel switching regulator controller IC. Each channel contains the basic circuits for controlling a PWM-type switching-regulator power supply. Both channels are integrated onto the same chip. Both channels can be completely synchronized, using the same oscillator output waveform. Each channel can provide output voltages for step-up, step-down, inverting, and other converter topologies. These controllers operate at voltages from 3.3 V to 40 V, making them suitable for a wide range of applications. They are ideal for chopper-type DC/DC converters. They are similar to the TL1451, but note that the HA17451A differs from the TL1451A. Functions●
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● Low-dropout 2.5V voltage reference Undervoltage lockout Triangle-wave oscillator Adjustable dead-time control Error amplifier Output driver (open-collector transistor type) PWM comparator HA17451AP/HA17451AFP
FEATURES
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● Low dropout voltage of on-chip 2.5V voltage reference: Vdrop = 0.2 V (typ) Op...