LP5907A28YKMR集成电路（IC）的线性+开关稳压器规格书PDF中文资料

LP5907A28YKMR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LP5907A28YKMR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

• For a more updated portfolio device, see the

TPS7A20

• Input voltage range: 2.2V to 5.5V

• Output voltage range: 1.2V to 4.5V

• Stable with 1-μF ceramic input and output

capacitors

• No noise bypass capacitor required

• Remote output capacitor placement

• Thermal-overload and short-circuit protection

• Operating junction temperature: –40°C to 125°C

• Low output voltage noise: < 6.5μVRMS

• PSRR: 82dB at 1kHz

• Output voltage tolerance: ±2%

• Very low IQ (enabled): 12μA

• Low dropout: 120mV (typical)

• Create a custom design using the LP5907 with the

WEBENCH® Power Designer

2 Applications

• Smartphones

• Tablets

• Communications equipment

• Digital still cameras

• Factory automation

3 Description

The LP5907 is a low-noise LDO that can supply

up to 250mA output current. Designed to meet the

requirements of RF and analog circuits, the LP5907

provides low noise, high PSRR, low quiescent current,

and low line or load transient response figures. Using

innovative design techniques, the LP5907 offers

class-leading noise performance without a noise

bypass capacitor and the ability for remote output

capacitor placement.

The device is designed to work with a 1μF input and

a 1μF output ceramic capacitor (no separate noise

bypass capacitor is required).

This device is available with fixed output voltages

from 1.2V to 4.5V in 25mV steps. Contact Texas

Instruments Sales for specific voltage option needs.