TPS76338DBVR集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS76338DBVR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TPS76338DBVR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。

1 Features

1• 150-mA, low-dropout regulator

• Output voltage: 5 V, 3.8 V, 3.3 V, 3 V, 2.8 V,

2.7 V, 2.5 V, 1.8 V, 1.6 V, and variable

• Dropout voltage, typically 300 mV at 150 mA

• Thermal protection

• Overcurrent limitation

• Less than 2-μA quiescent current in shutdown

mode

• –40°C to 125°C operating junction temperature

range

• 5-pin SOT-23 (DBV) package

2 Applications

• Electricity meters

• Solar inverters

• HVAC systems

• Servo drives and motion control

• Sensor transmitters

3 Description

The TPS763xx family of low-dropout (LDO) voltage

regulators offers the benefits of low-dropout voltage,

low-power operation, and miniaturized packaging.

These regulators feature low dropout voltages and

quiescent currents compared to conventional LDO

regulators. Offered in a 5-pin, small outline

integrated-circuit SOT-23 package, the TPS763xx

series devices are ideal for cost-sensitive designs

and for 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 low—typically 300 mV

at 150 mA of load current (TPS76333)—and is

directly proportional to the load current. Because the

PMOS pass element is a voltage-driven device, the

quiescent current is low (140 μA 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 TPS763xx also features a logic-enabled sleep

mode to shut down the regulator, reducing quiescent

current to 1 μA maximum at TJ = 25°C.The

TPS763xx is offered in 1.6-V ,1.8-V, 2.5-V, 2.7-V,

2.8-V, 3-V, 3.3-V, 3.8-V, and 5-V fixed-voltage

versions and in a variable version (programmable

over the range of 1.5 V to 6.5 V).