TPS71745DSET.B中文资料德州仪器数据手册PDF规格书

1 Features

1• Input Voltage: 2.5 V to 6.5 V

• Available in Multiple Output Versions:

– Fixed Output with Voltages from 0.9 V to 5 V

– Adjustable Output Voltage from 0.9 V to 6.2 V

• Ultra-High PSRR:

– 70 dB at 1 kHz, 67 dB at 100 kHz, and

45 dB at 1 MHz

• Excellent Load and Line Transient Response

• Very Low Dropout: 170 mV typical at 150 mA

• Low Noise: 30 μVRMS typical (100 Hz to 100 kHz)

• Small 5-pin SC-70, 2-mm × 2-mm WSON-6, and

1.5-mm × 1.5-mm WSON-6 Packages

2 Applications

• Camera Sensor Power

• Mobile Phone Handsets

• PDAs and Smartphones

• Wireless LAN, Bluetooth®

3 Description

The TPS717 family of low-dropout (LDO), low-power

linear regulators offers very high power-supply

rejection (PSRR) while maintaining very low 45-μA

ground current in an ultra-small, five-pin SOT

package. The family uses an advanced BiCMOS

process and a PMOS pass device to achieve fast

start-up, very low noise, excellent transient response,

and excellent PSRR performance. The TPS717 is

stable with a 1-μF ceramic output capacitor and uses

a precision voltage reference and feedback loop to

achieve a worst-case accuracy of 3% over all load,

line, process, and temperature variations. The device

family is fully specified from TJ = –40°C to 125°C and

is offered in a small SOT (SC70-5) package, a

2-mm × 2-mm WSON-6 package with a thermal pad,

and a 1.5-mm × 1.5-mm WSON-6 package, which

are ideal for small form factor portable equipment

(such as wireless handsets and PDAs).