TPS75818集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS75818属于集成电路（IC）的线性+开关稳压器。由德州仪器制造生产的TPS75818稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。

FEATURES

· 3A Low-Dropout Voltage Regulator

· Available in 1.5V, 1.8V, 2.5V, and 3.3V

Fixed-Output and Adjustable Versions

· Dropout Voltage Typically 150mV at 3A

(TPS75833)

· VREF and Pinout Compatible with MIC29302

(TPS758A01)

· Low 125mA Typical Quiescent Current

· Fast Transient Response

· 3% Tolerance Over Specified Conditions for

Fixed-Output Versions

· Available in 5-Pin TO-220 and TO-263

Surface-Mount Packages

· Thermal Shutdown Protection

DESCRIPTION

The TPS758xx family of 3A low dropout (LDO)

regulators contains four fixed voltage option

regulators and an adjustable voltage option

regulator. These devices are capable of supplying 3A

of output current with a dropout of 150mV

(TPS75833). Therefore, the device is capable of

performing a 3.3V to 2.5V conversion.

Quiescent current is 125mA at full load and drops to

less than 1mA when the device is disabled. The

TPS758xx 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

150mV at an output current of 3A for the TPS75833)

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

125mA 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 (enable) is

connected to a high voltage level (> 2V). Applying a

low voltage level (< 0.7V) to EN shuts down the

regulator, reducing the quiescent current to less than

1mA at TJ = +25°C.

The TPS758xx is offered in 1.5V, 1.8V, 2.5V, and

3.3V fixed-voltage versions and in an adjustable

version (programmable over the range of 1.22V to

5V). Output voltage tolerance is specified as a

maximum of 3% over line, load, and temperature

ranges. The TPS758xx family is available in a 5-pin

TO-220 (KC) and TO-263 (KTT) packages.