The TPS767D3xx family of dual voltage regulators offers fast transient
response, low dropout voltages and dual outputs in a compact package and
incorporating stability with 10µF low ESR output capacitors.
The TPS767D3xx family of dual voltage regulators is designed primarily
for DSP applications. These devices can be used in any mixed-output voltage
application, with each regulator supporting up to 1A. Dual active-low reset
signals allow resetting of core-logic and I/O separately.
Because the PMOS device behaves as a low-value resistor,
the dropout voltage is very low (350mV typically at an output current of 1A
for the TPS767D325) and is directly proportional to the output current.
Additionally, since the PMOS pass element is a voltage-driven device, the
quiescent current is very low and independent of output loading (typically 85µA over the full range of output current, 0mA to 1A). These two key
specifications yield a significant improvement in operating life for
battery-powered systems. This LDO family also features a sleep mode; applying a
TTL high signal to EN (enable) shuts down
the regulator, reducing the quiescent current to 1µA at TJ = +25°C.
The RESET output of
the TPS767D3xx initiates a reset in microcomputer and microprocessor systems in
the event of an undervoltage condition. An internal comparator in the
TPS767D3xx monitors the output voltage of the regulator to detect an
undervoltage condition on the regulated output voltage.
The TPS767D3xx is offered in 1.8V, 2.5V, and 3.3V
fixed-voltage versions and in an adjustable version (programmable over the
range of 1.5V to 5.5V). Output voltage tolerance is specified as a maximum of
2% over line, load, and temperature ranges. The TPS767D3xx family is available
in a 28-pin PWP TSSOP package. They operate over a junction temperature range of
-40°C to +125°C.