Datasheet > LT3041

LT3041

更新时间： 2024-11-06 14:58:11

品牌	Logo	应用领域
亚德诺 - ADI		稳压器
页数	文件大小	规格书
36页	2399K
描述
具有 VIOC 的 20 V、1 A、超低噪声、超高 PSRR 线性稳压器

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LT3041 数据手册

Data Sheet

LT3041

20 V, 1 A, Ultra-Low Noise, Ultra-High PSRR Linear Regulator with VIOC Control

FEATURES

GENERAL DESCRIPTION

► Ultra-low output RMS noise: 1.0 μV rms (10 Hz to 100 kHz)

► Ultra-low output noise spectral density: 3 nV/√Hz at 10 kHz

► Ultra-low 1/f noise: 8 µV p-p (0.1 Hz to 10 Hz)

► Ultra-high PSRR: 80 dB at 1 MHz

The LT3041 is a high-performance, low-dropout linear regulator

featuring Analog Devices, Inc., ultra-low noise and ultra-high power

supply rejection ratio (PSRR) architecture for powering noise-sen-

sitive applications. Designed as a precision-current reference fol-

lowed by a high-performance voltage buffer, the LT3041 can be

easily paralleled to further reduce noise, increase output current,

and spread heat on the printed circuit board (PCB).

► Output current: 1 A

► Wide input voltage range: 2.2 V to 20 V

► Single capacitor improves noise and PSRR

► SET pin current: 100 µA, ±0.5% initial accuracy

► VIOC pin to manage power dissipation

► Single resistor programs output voltage

► Programmable current limit

► Low-dropout voltage: 310 mV

► Output voltage range: 0.2 V to 15 V

► Programmable power good

► Fast start-up capability

► Precision enable/UVLO

► Parallelable for lower noise and higher current

► Internal current limit with foldback

The LT3041 supplies 1 A at a typical 310 mV dropout voltage. The

operating quiescent current is nominally 4.3 mA and drops to 18

µA in shutdown. The wide output voltage range (0.2 V to 15 V)

of the LT3041 maintained by the unity-gain operation provides virtu-

ally constant output noise, PSRR, bandwidth, and load regulation,

independent of the programmed output voltage. Additionally, the

regulator features VIOC, programmable current limit, fast start-up

capability, and programmable power good to indicate output-voltage

regulation.

Built-in protection includes reverse-battery protection, reverse-cur-

rent protection, internal current limit with foldback, and thermal limit

with hysteresis. The LT3041 is available in a thermally enhanced,

14-lead 4 mm × 3 mm, DFN package.

► Minimum output capacitor: 2 parallel 10 µF ceramic

► Compact, low profile, 14-lead, 4 mm × 3 mm, DFN package

APPLICATIONS

► RF power supplies: phase-locked loops, voltage-controlled oscil-

lators, mixers, low-noise amplifiers, and power amplifiers

► Low-noise instrumentation

► High-speed and high-precision data converters

► Medical applications: imaging and diagnostics

► Postregulator for switching supplies

TYPICAL APPLICATION

Figure 2. PSRR vs. Frequency

Figure 1. Typical Application

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable "as is". However, no responsibility is assumed by Analog

Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to

change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

DOCUMENT FEEDBACK

TECHNICAL SUPPORT

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与LT3041相关器件

型号	品牌	获取价格	描述	数据表
LT3042	Linear	获取价格	20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator with VIOC Control
LT3042	ADI	获取价格	20V、200mA、超低噪声、超高 PSRR RF 线性稳压器
LT3045	Linear	获取价格	20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator with VIOC Control
LT3045	ADI	获取价格	20V、500mA、超低噪声、超高 PSRR 线性稳压器
LT3045-1	Linear	获取价格	20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator with VIOC Control
LT3045-1	ADI	获取价格	具 VIOC 控制功能的 20V、500mA、超低噪声、超高 PSRR 线性稳压器
LT3046	ETC	获取价格	TRANSISTOR \| BJT \| NPN \| 200MA I(C) \| TO-46
LT3046	ADI	获取价格	20V, 200mA, Ultra-Low Noise, Ultra-High PSRR, Linear Regulator
LT3048	Linear	获取价格	Low Noise Bias Generator in 2mm 2mm DFN
LT3048	ADI	获取价格	采用 2mm x 2mm DFN 封装的低噪声偏置发生器

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