SI-3033ZD

Input Voltage, V_I . . . . . . . . . . . . . 10 V
Output Current, I_O . . . . . . . . . . . . . 3 A*
Enable Input Voltage, V_E . . . . . . . . 6 V
Junction Temperature, T_J . . . . +125°C
Storage Temperature Range,
T_S . . . . . . . . . . . . -40°C to +125°C
* Output current rating is limited by input voltage, duty cycle, and ambient temperature.Under any set of conditions, do not exceed a junction temperature of +125°C.

Designed to meet the high-current requirements in industrial and consumer applications; embedded core, memory, or logic supplies; TVs, VCRs, and office equipment, the SI-3033ZD voltage regulator offers the reduced dropout voltage and low quiescent current essential for improved efficiency. SI-3033ZD delivers a regulated output at up to 3 A. Integrated thermal and overcurrent protection enhance overall system reliability. Devices with an adjustable 1.2 ~ 5 V output or a 2.5 V fixed output are also available.

Quiescent current of SI-3033ZD does not increase significantly as the dropout voltage is approached, an ideal feature in standby/resume power systems where data integrity is crucial. Regulator accuracy and excellent temperature characteristics are provided by a bandgap reference. An LS-TTL/CMOS-compatible input of SI-3033ZD gives the designer complete control over power up, standby, or power down. A pnp pass element provides a dropout voltage of less than 600 mV at 3 A of load current. Low output voltages eliminate the need for expensive PWM buck converters. The low dropout voltage of SI-3033ZD permits more efficient regulation before output regulation is lost.

SI-3033ZD is supplied in a 5-lead surface-mount plastic package (TO-263) with ground tab to provide a low-resistance path for maximum heat dissipation. A similar device in a flange-mounted (TO-220-style) high-power package is the SI-3033ZF.