TPS7A0218PYCHR集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS7A0218PYCHR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TPS7A0218PYCHR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

• Ultra-low IQ: 25 nA (typ), even in dropout

• Shutdown IQ: 3 nA (typ)

• Excellent transient response (1 mA to 50 mA)

– < 10-μs settling time

– 100-mV undershoot

• Packages:

– 1.0-mm × 1.0-mm X2SON

– SOT23-5

– 0.64-mm × 0.64-mm DSBGA

• Input voltage range: 1.5 V to 6.0 V

• Output voltage range: 0.8 V to 5.0 V (fixed)

• Output accuracy: 1.5 over temperature

• Smart enable pulldown

• Very low dropout:

– 270 mV (max) at 200 mA (VOUT = 3.3 V)

• Stable with a 1-μF or larger capacitor

2 Applications

• Wearables electronics

• Thermostats, smoke and heat detectors

• Gas, heat, and water meters

• Blood glucose monitors and pulse oximeters

• Residential circuit breakers and fault indicators

• Building security and video surveillance devices

• EPOS card readers

3 Description

The TPS7A02 is an ultra-small, ultra-low quiescent

current low-dropout linear regulator (LDO) that can

source 200 mA with excellent transient performance.

The TPS7A02, with an ultra-low IQ of 25 nA, is

designed specifically for applications where very-low

quiescent current is a critical parameter. This device

maintains low IQ consumption even in dropout mode

to further increase battery life. When in shutdown or

disabled mode, the device consumes ultra-low,

3-nA IQ that helps increase the shelf life of the battery.

The TPS7A02 has an output range of 0.8 V to 5.0

V available in 50-mV steps to support the lower core

voltages of modern microcontrollers (MCUs).

The TPS7A02 features a smart enable circuit with an

internally controlled pulldown resistor that keeps the

LDO disabled even when the EN pin is left floating

and helps minimize the external components used to

pulldown the EN pin. This circuit also helps minimize

the current drawn through the external pulldown

circuit when the device is enabled.

The TPS7A02 is fully specified for TJ = –40°C to

+125°C operation.