TPS75501KC

The TPS755xx family of 5-A low dropout (LDO) regulators contains four fixed voltage option regulators with integrated power-good (PG（overline）) and an adjustable voltage option regulator. These devices are capable of supplying 5 A of output current with a dropout of 250 mV (TPS75533). Therefore, the device is capable of performing a 3.3 V to 2.5 V conversion. Quiescent current is 125 μA at full load and drops down to less than 1 μA when the device is disabled. The TPS755xx is designed to have fast transient response for large load current changes. Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 250 mV at an output current of 5 A for the TPS75533) 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 125 μA over the full range of output current). These two key specifications yield a significant improvement in operating life for battery-powered systems. The device is enabled when EN is connected to a low-level voltage. This LDO family also features a sleep mode; applying a TTL high signal to EN（overline） (enable) shuts down the regulator, reducing the quiescent current to less than 1 μA at TJ = 25 ℃. The power-good terminal (PG（overline）) is an active low, open drain output, which can be used to implement a power-on reset or a low-battery indicator. The TPS755xx is offered in 1.5-V, 1.8-V, 2.5-V, and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.22 V to 5 V). Output voltage tolerance is specified as a maximum of 3% over line, load, and temperature ranges. The TPS755xx family is available in a 5-pin TO-220 (KC) and TO-263 (KTT) packages. The TPS755xx family includes four fixed-output voltage regulators (1.5 V, 1.8 V, 2.5 V, and 3.3 V), and an adjustable regulator, the TPS75501 (adjustable from 1.22 V to 5 V). The bandgap voltage is typically 1.22 V

Applications

• Battery-powered systems
• Power-on reset circuits
• Low battery indicator circuits
• Low-voltage DC conversion applications

Key features

• Available in 1.5V, 1.8V, 2.5V, 3.3V fixed output versions and adjustable output version with 1.22V~5V output range
• Power Good (PG) open-drain output available on fixed output versions only
• TPS75533 typical dropout voltage of 250mV at 5A output current
• Typical quiescent current as low as 125μA, 125μA at full load, drops below 1μA when device is disabled
• Fast transient response for large load current variations
• Fixed output versions: maximum output voltage tolerance of 3% over specified line, load, and temperature conditions
• Available in 5-pin TO-220 and TO-263 SMT packages
• Integrated thermal shutdown protection
• Sleep mode: applying TTL-high to enable pin shuts down the regulator
• PG active-low open-drain output with typical trigger threshold 9% below regulated output voltage, with hysteresis
• Adjustable output version: output voltage programmable via external resistor divider
• Low quiescent current independent of output load, extending system operating life
• Supports 3.3V to 2.5V voltage conversion
• Enable pin control logic: logic high = shutdown mode, logic low = device enabled
• Input voltage maximum range: -0.3V~6V; enable pin voltage maximum range: -0.3V~6V
• Fixed output versions: PG pin maximum voltage 6V; peak output current internally limited
• Operating junction temperature range: -40℃~150℃; storage temperature range: -65℃~150℃
• ESD rating: 2kV (HBM), 500V (CDM)