Datasheet > LTM4709

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

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中文翻译

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LTM4709 数据手册

LTM4709

Triple 3A, Ultralow Noise, High PSRR, Ultrafast µModule

Linear Regulator with Configurable Output Array

FEATURES

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.

Input Voltage: 0.6V to 5.5V

Configurable Output Voltage: 0.5V to 4.2V

Ultralow RMS Noise: 1.3μV

(10Hz to 100kHz)

RMS

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

Overtemperature Protection

150°C Rated Available

6mm × 12mm × 1.92mm BGA Package

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.

RF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs

High Speed/High Precision Data Converter

FPGA, DSP, and Microprocessor Power Supplies

High-Speed Servers and Storage Devices

Medical and Healthcare

Very-Low-Noise Instrumentation

Configurable Output Array

Post-Regulation for Switching Supplies

All registered trademarks and trademarks are the property of their respective owners.

TYPICAL APPLICATION

Triple 3A µModule Regulator

V_INPSRR at 1V_OUTand 3A

120

3.3V

BIAS

1.3V

BIAS1,2,3

LTM4709

GND

0.8V

OUT1

22μF

OUT1

IN1

IN2

IN3

100

10μF

× 3

OUTS1

EN1,2,3

IMONR1

PGR1,2,3

OUT2

O10

OUT2

22μF

O11

O12

O20

O21

O22

O30

O31

O32

OUTS2

PINS NOT USED:

PG1,2,3

IMONR2

VIOC1,

IMON1,2,3,

OUT3

0.9V

OUT3

22μF

REF1,2,3

OUTS3

= 1.3V, C

= 22μF

OUT

IMONR3

100

10k 100k

10M

4709 TA01a

FREQUENCY (Hz)

4709 TA1b

Rev. 0

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