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RTQ2540H PDF预览

RTQ2540H

更新时间： 2024-12-01 17:01:23
品牌 Logo 应用领域
立锜 - RICHTEK /
页数 文件大小 规格书
26页 1491K
描述
4A, 6.5V, Ultra-Low Noise, Ultra-Low Dropout Linear Regulator

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RTQ2540H 数据手册

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RTQ2540H  
4A, 6.5V, Ultra-Low Noise, Ultra-Low Dropout Linear Regulator  
1 General Description  
2 Features  
⚫ Input Voltage Range: 1.1V to 6.5V  
⚫ Output Voltage Range: 0.8 V to 5.5V  
⚫ Accurate Output Voltage Accuracy (1%) Over Line,  
Load and Temperature  
The RTQ2540H is a high-current, low-noise , high  
accuracy, low-dropout linear regulator (LDO) capable of  
sourcing 4A with extremely low dropout (max. 145mV).  
The device supports single input supply voltage as low  
to 1.1V, enhancing its ease of use.  
⚫ Ultra-High PSRR: 39dB at 500kHz  
⚫ Excellent Noise Immunity  
The low-noise, high PSRR and high output current  
capability makes the RTQ2540H ideal for powering  
noise-sensitive devices such as analog-to-digital  
converters (ADCs), digital-to-analog converters (DACs),  
and RF components. With very high accuracy, remote  
sensing, and soft-start capabilities to reduce inrush  
current, the RTQ2540H is suitable for powering digital  
loads such as FPGAs, DSPs, and ASICs.  
7.4V  
at 0.8V Output  
at 5V Output  
RMS  
13.8V  
RMS  
⚫ Ultra-Low Dropout Voltage: 145mV Max. at 4A  
⚫ Enable Control  
⚫ Programmable Soft-Start Output  
⚫ Stable with a 47F or Larger Ceramic Output  
Capacitor  
⚫ Supports Power-Good Indicator Function  
The external enable control and power good indicator  
function make the control sequence easier. The output  
noise immunity is enhanced by adding external bypass  
capacitor on the NR/SS pin. The device is fully specified  
3 Applications  
⚫ Portable Electronic Devices  
⚫ Wireless Infrastructures: SerDes, FPGA, DSP  
⚫ RD, IF, Components: VCO, ADC, DAC, LVDS  
over the temperature range of T = −40°C to 125°C and  
J
is offered in the WQFN-12L 2.2x2.5 (FC).  
4 Simplified Application Circuit  
RTQ2540H  
V
VIN  
IN  
V
OUT  
VOUT  
C
IN  
C
R1  
R2  
C
FF  
OUT  
Power Good  
FB  
R3  
C
V
OUT  
PGOOD  
Enable  
EN  
NR/SS  
GND  
NR/SS  
Copyright © 2023 Richtek Technology Corporation. All rights reserved.  
is a registered trademark of Richtek Technology Corporation.  
DSQ2540H-00 September 2023  
www.richtek.com  
1
 
 
 
 
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