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TPS755

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具有电源正常指示和使能功能的 5A、超低压降稳压器

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TPS7A54 正在供货 4A、低输入电压 (1.1V)、低噪声、高精度、超低压降 (LDO) 稳压器 Cost-optimized product with lower current, lower noise performance and can be paralleled in order to achieve 5 A
TPS7A57 正在供货 5A、低输入电压、低噪声、高精度、低压降 (LDO) 稳压器 Alternative product offering much lower noise performance in smaller enhanced QFN package

TPS755

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Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 2.8 Iout (max) (A) 5 Output options Adjustable Output, Fixed Output Vout (max) (V) 5 Vout (min) (V) 1.22 Fixed output options (V) 1.5, 1.8, 2.5, 3.3 Noise (µVrms) 35 PSRR at 100 KHz (dB) 12 Iq (typ) (mA) 0.12 Features Enable, Power good Thermal resistance θJA (°C/W) 39 Load capacitance (min) (µF) 47 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 250 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 2.8 Iout (max) (A) 5 Output options Adjustable Output, Fixed Output Vout (max) (V) 5 Vout (min) (V) 1.22 Fixed output options (V) 1.5, 1.8, 2.5, 3.3 Noise (µVrms) 35 PSRR at 100 KHz (dB) 12 Iq (typ) (mA) 0.12 Features Enable, Power good Thermal resistance θJA (°C/W) 39 Load capacitance (min) (µF) 47 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 250 Operating temperature range (°C) -40 to 125
TO-263 (KTT) 5 154.8384 mm² (10.16 mm × 15.24 mm) TO-220 (KC) 5 45.212 mm² (10.16 mm × 4.45 mm)
  • 5-A Low-Dropout Voltage Regulator
  • Available in 1.5-V, 1.8-V, 2.5-V, and 3.3-V Fixed-Output and Adjustable Versions
  • Open Drain Power-Good (PG\) Status Output (Fixed Options Only)
  • Dropout Voltage Typically 250 mV at 5 A (TPS75533)
  • Low 125 uA Typical Quiescent Current
  • Fast Transient Response
  • 3% Tolerance Over Specified Conditions for Fixed-Output Versions
  • Available in 5-Pin TO\x96220 and TO\x96263 Surface-Mount Packages
  • Thermal Shutdown Protection
  • 5-A Low-Dropout Voltage Regulator
  • Available in 1.5-V, 1.8-V, 2.5-V, and 3.3-V Fixed-Output and Adjustable Versions
  • Open Drain Power-Good (PG\) Status Output (Fixed Options Only)
  • Dropout Voltage Typically 250 mV at 5 A (TPS75533)
  • Low 125 uA Typical Quiescent Current
  • Fast Transient Response
  • 3% Tolerance Over Specified Conditions for Fixed-Output Versions
  • Available in 5-Pin TO\x96220 and TO\x96263 Surface-Mount Packages
  • Thermal Shutdown Protection

The TPS755xx family of 5-A low dropout (LDO) regulators contains four fixed voltage option regulators with integrated power-good (PG\) 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 uA at full load and drops down to less than 1 uA 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 uA 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\ (enable) shuts down the regulator, reducing the quiescent current to less than 1 uA at TJ = 25°C. The power-good terminal (PG\) 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\x96220 (KC) and TO\x96263 (KTT) packages.

The TPS755xx family of 5-A low dropout (LDO) regulators contains four fixed voltage option regulators with integrated power-good (PG\) 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 uA at full load and drops down to less than 1 uA 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 uA 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\ (enable) shuts down the regulator, reducing the quiescent current to less than 1 uA at TJ = 25°C. The power-good terminal (PG\) 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\x96220 (KC) and TO\x96263 (KTT) packages.
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* 数据表 Fast-Transient Response 5-A Low Dropout Voltage Regulators 数据表 (Rev. D) 2002-5-28

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