TPS73401DDCR

1 FEATURES

• 250mA Low Dropout Regulator with EN

• Low IQ: 44µA

• Multiple Output Voltage Versions Available:

– Fixed Outputs of 1.0V to 4.3V Using Innovative Factory EEPROM Programming

– Adjustable Outputs from 1.25V to 6.2V

• High PSRR: 60dB at 1kHz

• Ultra-low Noise: 28µVRMS

• Fast Start-Up Time: 45µs

• Stable with a Low-ESR, 2.0µF Typical Output Capacitance

• Excellent Load/Line Transient Response

• 2% Overall Accuracy (Load/Line/Temp)

• Very Low Dropout: 125mV at 250mA

• ThinSOT-23, 2mm × 2mm SON-6, and 3mm x 3mm SON-8 Packages

2 APPLICATIONS

• WiFi, WiMax

• Printers

• Cellular Phones, SmartPhones

• Handheld Organizers, PDAs

3 DESCRIPTION

The TPS734xx family of low-dropout (LDO), low-power linear regulators offers excellent ac performance with very low ground current. High power-supply rejection ratio (PSRR), low noise, fast start-up, and excellent line and load transient response are provided while consuming a very low 44µA (typical) ground current. The TPS734xx is stable with ceramic capacitors and uses an advanced BiCMOS fabrication process to yield a typical dropout voltage of 125mV at 250mA output. The TPS734xx uses a precision voltage reference and feedback loop to achieve overall accuracy of 2% over all load, line, process, and temperature variations. It is fully specified from TJ = –40°C to +125°C and is offered in low-profile ThinSOT-23, 2mm × 2mm SON, and 3mm x 3mm SON packages that are ideal for wireless handsets, printers, and WLAN cards.

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