TPS767D325PWPR集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS767D325PWPR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TPS767D325PWPR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

23· Dual Output Voltages for Split-Supply

Applications

· Output Current Range of 0mA to 1.0A per

Regulator

· 3.3V/2.5V, 3.3V/1.8V, and 3.3V/Adjustable

Output

· Fast-Transient Response

· 2% Tolerance Over Load and Temperature

· Dropout Voltage Typically 350mV at 1A

· Ultra-low 85mA Typical Quiescent Current

· 1mA Quiescent Current During Shutdown

· Dual Open-Drain Power-On Reset with 200ms

Delay for Each Regulator

· 28-Pin PowerPAD™ TSSOP Package

· Thermal Shutdown Protection for Each

Regulator

DESCRIPTION

The TPS767D3xx family of dual voltage regulators

offers fast transient response, low dropout voltages

and dual outputs in a compact package and

incorporating stability with 10mF low ESR output

capacitors.

The TPS767D3xx family of dual voltage regulators is

designed primarily for DSP applications. These

devices can be used in any mixed-output voltage

application, with each regulator supporting up to 1A.

Dual active-low reset signals allow resetting of

core-logic and I/O separately.

Because the PMOS device behaves as a low-value

resistor, the dropout voltage is very low (350mV

typically at an output current of 1A for the

TPS767D325) 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 85mA over the full range of output current,

0mA to 1A). 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 1mA at TJ = +25°C.

The RESET output of the TPS767D3xx initiates a reset in microcomputer and microprocessor systems

in the event of an undervoltage condition. An internal

comparator in the TPS767D3xx monitors the output

voltage of the regulator to detect an undervoltage

condition on the regulated output voltage.

The TPS767D3xx is offered in 1.8V, 2.5V, and 3.3V

fixed-voltage versions and in an adjustable version

(programmable over the range of 1.5V to 5.5V).

Output voltage tolerance is specified as a maximum

of 2% over line, load, and temperature ranges. The

TPS767D3xx family is available in a 28-pin PWP

TSSOP package. They operate over a junction

temperature range of –40°C to +125°C.