LP5907QMFX-1.2Q1集成电路（IC）的线性+开关稳压器规格书PDF中文资料

LP5907QMFX-1.2Q1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LP5907QMFX-1.2Q1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• AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to 125°C, TA

• Input voltage range: 2.2 V to 5.5 V

• Output voltage range: 1.2 V to 4.5 V

• Stable with 1-μF ceramic input and output

capacitors

• No noise bypass capacitor required

• Remote output capacitor placement

• Thermal-overload and short-circuit protection

• Output current: 250 mA

• Low output voltage noise: < 6.5 μVRMS

• PSRR: 82 dB at 1 kHz

• Output voltage tolerance: ±2%

• Virtually zero IQ (disabled): < 1 μA

• Very low IQ (enabled): 12 μA

• Start-up time: 80 μs

• Low dropout: 120 mV (typical)

• –40°C to 125°C junction temperature range for

operation

2 Applications

• ADAS cameras and radar

• Automotive infotainment

• Telematics systems

• Navigation systems

3 Description

The LP5907-Q1 is a low-noise LDO that can supply

250 mA of output current. Designed to meet the

requirements of RF and analog circuits, the LP5907-

Q1 provides low noise, high PSRR, low quiescent

current, and low line or load transient response

figures. Using new innovative design techniques, the

LP5907-Q1 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 1-μF input and

a 1-μF output ceramic capacitor (no separate noise

bypass capacitor is required).

This device is available with fixed output voltages

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

Instruments Sales for specific voltage option needs.