TPS799L54YZYT集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS799L54YZYT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TPS799L54YZYT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

1• 200-mA Low-Dropout Regulator with EN

• Multiple Output Voltage Versions Available:

– TPS799L: Fixed Outputs of 5.2 V to 6.2 V

Using Innovative Factory EEPROM

Programming

– TPS799L57: 5.7-V Output

– TPS799L54: 5.4-V Output

– TPS799: Output Options Less Than 5.2 V

• Inrush current Protection with EN Toggle

• Low IQ: 40 μA

• High PSRR: 66 dB at 1 kHz

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

Capacitance

• Excellent Load and Line Transient Response

• 2% Overall Accuracy (Load, Line, and

Temperature)

• Very Low Dropout: 100 mV

• Package: 5-Bump, Thin, 1-mm × 1.37-mm

DSBGA

2 Applications

• Cellular Phones

• Wireless LAN, Bluetooth®

• VCOs, RF

• Handheld Organizers, PDAs

3 Description

The TPS799L 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 40-μA (typical) ground current.

The TPS799Lxx is stable with ceramic capacitors and

uses an advanced BiCMOS fabrication process to

yield a dropout voltage of typically 100 mV at a 200-mA output. The TPS799L uses a precision

voltage reference and feedback loop to achieve an

overall accuracy of 2% over all load, line, process,

and temperature variations. The TPS799L features

inrush current protection when the EN toggle is used

to start the device, immediately clamping the current.

All devices are fully specified over the temperature range of TJ = –40°C to 125°C, and offered in a low-

profile, die-sized ball grid array (DSBGA) package,

ideal for wireless handsets and WLAN cards.