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LTM4709

更新时间: 2024-04-09 19:00:39
品牌 Logo 应用领域
亚德诺 - ADI 稳压器
页数 文件大小 规格书
26页 2025K
描述
具有可配置输出阵列的三通道3A、超低噪声、高PSRR、超快速μModule线性稳压器

LTM4709 数据手册

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LTM4709  
Triple 3A, Ultralow Noise, High PSRR, Ultrafast µModule  
Linear Regulator with Configurable Output Array  
FEATURES  
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DESCRIPTION  
Linear Regulator µModule® with Triple 3A Output  
The LTM®4709 is a low voltage, triple 3A µModule  
linear regulator offering a high power supply rejection  
ratio (PSRR), ultralow noise, and ultrafast transient  
response. The µModule regulator includes low dropout  
linearregulators(LDO),capacitors,andresistors.Operating  
over an input voltage range of 0.6V to 5.5V, the LTM4709  
supports an output voltage range of 0.5V to 4.2V for  
triple 3A channels with a typical dropout voltage of 45mV.  
The output voltage is digitally configurable in 50mV  
increments from 0.5V to 1.2V; 100mV increments from  
1.2V to 1.8V; and discrete levels at 2V, 2.5V, 3V, 3.3V,  
and 4.2V. A precision current monitor provides accurate  
current monitoring for the energy management system  
and current limit. The LTM4709 is ideal for RF communi-  
cation, noise-sensitive instrumentation, post-regulation  
for switching regulators, high-performance FPGAs, and  
microprocessors. Only input, output, and bias ceramic  
capacitors are needed for its application.  
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Input Voltage: 0.6V to 5.5V  
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Configurable Output Voltage: 0.5V to 4.2V  
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Ultralow RMS Noise: 1.3μV  
(10Hz to 100kHz)  
RMS  
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High Frequency PSRR: 51dB at 1MHz  
Low Dropout Voltage: 45mV Typical at 3A  
Ultrafast Transient Response  
50% Smaller Than Discrete Solutions  
1.5% Output Voltage Regulation Over Line, Load,  
and Temperature  
2.4% Precision Current Monitor Accuracy at 3A  
Stable with Ceramic Output Capacitors (10μF Minimum)  
Parallel Multiple Devices for Higher Current  
PG Flag, UVLO, Overcurrent and  
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Overtemperature Protection  
150°C Rated Available  
6mm × 12mm × 1.92mm BGA Package  
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APPLICATIONS  
Fault protection features include UVLO, power good, over-  
current, and overtemperature protection. The LTM4709 is  
offered in 6mm × 12mm × 1.92mm, 98-pin BGA package  
with 0.8mm ball pitch.  
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RF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs  
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High Speed/High Precision Data Converter  
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FPGA, DSP, and Microprocessor Power Supplies  
High-Speed Servers and Storage Devices  
Medical and Healthcare  
Very-Low-Noise Instrumentation  
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Configurable Output Array  
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3A  
3A  
3A  
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6A  
3A  
9A  
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Post-Regulation for Switching Supplies  
All registered trademarks and trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
Triple 3A µModule Regulator  
VIN PSRR at 1VOUT and 3A  
120  
3.3V  
BIAS  
1.3V  
BIAS1,2,3  
LTM4709  
GND  
0.8V  
OUT1  
22μF  
V
V
V
V
OUT1  
IN  
IN1  
IN2  
IN3  
100  
80  
10μF  
× 3  
V
OUTS1  
EN1,2,3  
IMONR1  
PGR1,2,3  
V
OUT2  
V
O10  
1V  
OUT2  
60  
22μF  
V
O11  
V
O12  
V
O20  
V
O21  
V
O22  
V
O30  
V
O31  
V
O32  
V
OUTS2  
PINS NOT USED:  
PG1,2,3  
IMONR2  
40  
VIOC1,  
IMON1,2,3,  
V
OUT3  
0.9V  
OUT3  
22μF  
V
REF1,2,3  
20  
V
OUTS3  
V
= 1.3V, C  
= 22μF  
OUT  
IN  
IMONR3  
0
10  
100  
1k  
10k 100k  
1M  
10M  
4709 TA01a  
FREQUENCY (Hz)  
4709 TA1b  
Rev. 0  
1
Document Feedback  
For more information www.analog.com  

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