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RTQ2538H PDF预览

RTQ2538H

更新时间: 2024-12-01 17:01:55
品牌 Logo 应用领域
立锜 - RICHTEK /
页数 文件大小 规格书
26页 1481K
描述
2A, 6.5V, Ultra-Low Noise, Ultra-Low Dropout Linear Regulator

RTQ2538H 数据手册

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RTQ2538H  
2A, 6.5V, Ultra-Low Noise, Ultra-Low Dropout Linear Regulator  
2 Features  
1 General Description  
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 RTQ2538H is a high-current, low-noise, high  
accuracy, low-dropout linear regulator (LDO) capable of  
sourcing 2A with extremely low dropout (max. 90mV).  
The device supports single input supply voltage as low  
to 1.1V, enhancing its ease of use.  
Ultra-High PSRR: 43dB at 500kHz  
Excellent Noise Immunity  
The low-noise, high PSRR and high output current  
capability makes the RTQ2538H 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 RTQ2538H is suitable for powering digital  
loads such as FPGAs, DSPs, and ASICs.  
7.8V  
at 0.8V Output  
at 5V Output  
RMS  
12.8V  
RMS  
Ultra-Low Dropout Voltage: 90mV Max. at 2A  
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  
RTQ2538H  
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.  
DSQ2538H-00 September 2023  
www.richtek.com  
1
 
 
 
 

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