Texas Instruments

The TPS764xx family of low-dropout (LDO) voltage regulators offers the benefits of a low noise, low-dropout voltage, low-power operation, and miniaturized package. Additionally, they feature low quiescent current when compared to conventional LDO regulators. Offered in 5-terminal small outline integrated-circuit SOT-23 package, the TPS764xx series devices are ideal for low-noise applications, cost-sensitive designs and applications where board space is at a premium. A combination of new circuit design and process innovation has enabled the usual pnp pass transistor to be replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low\x97typically 300 mV at 150 mA of load current (TPS76433)\x97and is directly proportional to the load current. Since the PMOS pass element is a voltage-driven device, the quiescent current is very low (140 uA maximum) and is stable over the entire range of output load current (0 mA to 150 mA). Intended for use in portable systems such as laptops and cellular phones, the low-dropout voltage feature and low-power operation result in a significant increase in system battery operating life. The TPS764xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 1 uA maximum at TJ= 25°C. The TPS764xx is offered in 2.5-V, 2.7-V, 2.8-V, 3.0-V, and 3.3-V fixed-voltages. The TPS764xx family of low-dropout (LDO) voltage regulators offers the benefits of a low noise, low-dropout voltage, low-power operation, and miniaturized package. Additionally, they feature low quiescent current when compared to conventional LDO regulators. Offered in 5-terminal small outline integrated-circuit SOT-23 package, the TPS764xx series devices are ideal for low-noise applications, cost-sensitive designs and applications where board space is at a premium. A combination of new circuit design and process innovation has enabled the usual pnp pass transistor to be replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low\x97typically 300 mV at 150 mA of load current (TPS76433)\x97and is directly proportional to the load current. Since the PMOS pass element is a voltage-driven device, the quiescent current is very low (140 uA maximum) and is stable over the entire range of output load current (0 mA to 150 mA). Intended for use in portable systems such as laptops and cellular phones, the low-dropout voltage feature and low-power operation result in a significant increase in system battery operating life. The TPS764xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 1 uA maximum at TJ= 25°C. The TPS764xx is offered in 2.5-V, 2.7-V, 2.8-V, 3.0-V, and 3.3-V fixed-voltages.

This device is designed to have an ultra-low quiescent current and be stable with a 4.7-µF capacitor. This combination provides high performance at a reasonable cost. Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 85 mV at an output current of 150 mA for the TPS76550) 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 35 µA over the full range of output current, 0 mA to 150 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. This LDO also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to less than 1 µA (typ). Power good (PG) is an active-high output, which can be used to implement a power-on reset or a low-battery indicator. The TPS765xx is offered in 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3-V, 3.3-V and 5-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.25 V to 5.5 V). Output voltage tolerance is specified as a maximum of 3% over line, load, and temperature ranges. The TPS765xx family is available in an 8-pin SOIC package. This device is designed to have an ultra-low quiescent current and be stable with a 4.7-µF capacitor. This combination provides high performance at a reasonable cost. Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 85 mV at an output current of 150 mA for the TPS76550) 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 35 µA over the full range of output current, 0 mA to 150 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. This LDO also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to less than 1 µA (typ). Power good (PG) is an active-high output, which can be used to implement a power-on reset or a low-battery indicator. The TPS765xx is offered in 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3-V, 3.3-V and 5-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.25 V to 5.5 V). Output voltage tolerance is specified as a maximum of 3% over line, load, and temperature ranges. The TPS765xx family is available in an 8-pin SOIC package.

This device is designed to have an ultra-low quiescent current and be stable with a 4.7-uF capacitor. This combination provides high performance at a reasonable cost. Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 85 mV at an output current of 150 mA for the TPS76550) 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 35 uA over the full range of output current, 0 mA to 150 mA). 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 less than 1 uA (typ). Power good (PG) is an active high output, which can be used to implement a power-on reset or a low-battery indicator. The TPS765xx is offered in 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V and 5.0-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.25 V to 5.5 V). Output voltage tolerance is specified as a maximum of 3% over line, load, and temperature ranges. The TPS765xx family is available in 8 pin SOIC package. This device is designed to have an ultra-low quiescent current and be stable with a 4.7-uF capacitor. This combination provides high performance at a reasonable cost. Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 85 mV at an output current of 150 mA for the TPS76550) 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 35 uA over the full range of output current, 0 mA to 150 mA). 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 less than 1 uA (typ). Power good (PG) is an active high output, which can be used to implement a power-on reset or a low-battery indicator. The TPS765xx is offered in 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V and 5.0-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.25 V to 5.5 V). Output voltage tolerance is specified as a maximum of 3% over line, load, and temperature ranges. The TPS765xx family is available in 8 pin SOIC package.

The TPS766 is a low-dropout (LDO) linear voltage regulator that supports an input voltage range from 2.5V to 16V (new chip) and up to 250mA of load current. For the new chip, the supported output range is from 1.2V to 12V (fixed version) or from 0.8V to 14.6V (adjustable version). The input voltage range is up to 16V (new chip), which makes the device a good choice for operating from transformer secondary windings and regulated rails (such as 10V or 12V). Additionally, the wide output voltage range allows the device to generate the bias voltage for silicon carbide (SiC) gate drivers and microphones, as well as power microcontrollers (MCUs) and processors. Wide bandwidth PSRR performance is greater than 70dB at 1kHz and 46dB at 1MHz (new chip), which helps attenuate the switching frequency of an upstream DC/DC converter and minimizes post regulator filtering. The new chip supports internal soft-start circuit mechanism that reduces inrush current during start-up, thus allowing for smaller input capacitance. The legacy chip supports constant quiescent current across the complete load current range (typically 35µA for the full range of output current, 0mA to 250mA). The TPS766 LDO also features a sleep mode, where applying a TTL high signal to EN (enable) shuts down the regulator. In disabled mode, the quiescent current for the legacy chip is less than 1µA (typ) and the quiescent current for the new chip is approximately 1.6µA (typ). Power-good (PG) is an active-high output used to implement a power-on reset or a low-battery indicator. For the fixed-output version, The TPS766 provides an output range of 1.5V to 5.0V (legacy chip) and 1.2V to 12V (new chip). For the adjustable version, program the output voltage over the range of 1.25V to 5.5V (legacy chip) and 0.8V to 14.6V (new chip). The TPS766 is available in an 8-pin SOIC package. The TPS766 is a low-dropout (LDO) linear voltage regulator that supports an input voltage range from 2.5V to 16V (new chip) and up to 250mA of load current. For the new chip, the supported output range is from 1.2V to 12V (fixed version) or from 0.8V to 14.6V (adjustable version). The input voltage range is up to 16V (new chip), which makes the device a good choice for operating from transformer secondary windings and regulated rails (such as 10V or 12V). Additionally, the wide output voltage range allows the device to generate the bias voltage for silicon carbide (SiC) gate drivers and microphones, as well as power microcontrollers (MCUs) and processors. Wide bandwidth PSRR performance is greater than 70dB at 1kHz and 46dB at 1MHz (new chip), which helps attenuate the switching frequency of an upstream DC/DC converter and minimizes post regulator filtering. The new chip supports internal soft-start circuit mechanism that reduces inrush current during start-up, thus allowing for smaller input capacitance. The legacy chip supports constant quiescent current across the complete load current range (typically 35µA for the full range of output current, 0mA to 250mA). The TPS766 LDO also features a sleep mode, where applying a TTL high signal to EN (enable) shuts down the regulator. In disabled mode, the quiescent current for the legacy chip is less than 1µA (typ) and the quiescent current for the new chip is approximately 1.6µA (typ). Power-good (PG) is an active-high output used to implement a power-on reset or a low-battery indicator. For the fixed-output version, The TPS766 provides an output range of 1.5V to 5.0V (legacy chip) and 1.2V to 12V (new chip). For the adjustable version, program the output voltage over the range of 1.25V to 5.5V (legacy chip) and 0.8V to 14.6V (new chip). The TPS766 is available in an 8-pin SOIC package.