TPS7A20L_V01中文资料德州仪器数据手册PDF规格书

1 Features

• Low output voltage noise: 7μVRMS

– No noise-bypass capacitor required

• High PSRR: 95dB at 1kHz

• Very low IQ: 6.5μA

• Input voltage range: 1.6V to 6.0V

• Output voltage range: 0.8V to 5.5V

• Output voltage tolerance: ±1.5% (max)

• Very low dropout:

– 140mV (max) at 300mA (VOUT = 3.3V)

• Low inrush current

• Smart enable pulldown

• Stable with 1μF minimum ceramic output capacitor

• Enable input compatible with 1.2V logic

• Package: 1mm × 1mm X2SON

2 Applications

• Smartphones and tablets

• IP network cameras

• Portable medical equipment

• Smart meters and field transmitters

• Motor drives

• Wearables

3 Description

The TPS7A20L is an ultra-small, low-dropout (LDO)

linear regulator that can source 300mA of output

current. The TPS7A20L is designed to provide

low noise, high PSRR, and excellent load and

line transient performance that can meet the

requirements of RF and other sensitive analog

circuits. Using innovative design techniques, the

TPS7A20L offers an ultra-low noise performance

without the addition of a noise bypass capacitor.

The TPS7A20L also provides the advantage of low

quiescent current, which can be beneficial for batterypowered

applications. With an input voltage range of

1.6V to 6.0V and an output range of 0.8V to 5.5V,

the TPS7A20L can be used for a wide variety of

applications. The device uses a precision reference

circuit to provide a maximum accuracy of 1.5% over

load, line, and temperature variations.

The TPS7A20L features an internal soft-start to lower

the inrush current, thus minimizing the input voltage

drop during start up. The device is stable with

small ceramic capacitors, allowing for a small overall

solution size.

The TPS7A20L has a smart enable input circuit with

an internally controlled pulldown resistor that keeps

the LDO disabled even when the EN pin is left

floating and helps eliminate the external components

used to pulldown the EN pin. The enable input logic

thresholds are compatible with the output levels of

1.2V logic devices.