Datasheet > LTC3311S

LTC3311S

更新时间： 2024-11-10 02:46:51

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
26页	2795K
描述
5V, 12.5A Synchronous Step-Down Silent Switcher in 3mm x 3mm LQFN

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中文翻译

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数据手册

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LTC3311S 数据手册

LTC3311

5V, 12.5A Synchronous Step-Down

Silent Switcher in 3mm x 3mm LQFN

FEATURES

DESCRIPTION

The LTC^®3311 is a very small, low noise, monolithic

step-down DC/DC converter capable of providing up to

12.5A of output current from a 2.25V to 5.5V input supply.

The device employs Silent Switcher 1 architecture with

internal hot loop bypass capacitors to achieve both low

EMI and high efficiency at switching frequencies as high

as 5MHz. For systems with higher power requirements,

multi-phasing parallel converters is readily implemented.

Pin Compatible with LTC3310/LTC3310S and LTC3311S

Silent Switcher^®Architecture:

Ultralow EMI Emissions

High Efficiency—4.5mΩ NMOS and 16mΩ PMOS

Wide Bandwidth, Fast Transient Response

Safely Tolerates Inductor Saturation in Overload

V Range: 2.25V to 5.5V

OUT

Range: 0.5V to V

Accuracy: 1% with Remote Sense

The LTC3311 uses a constant frequency, peak current

mode control architecture for fast transient response. A

500mV reference allows for low voltage outputs. 100%

duty cycle operation delivers low drop out.

Peak Current Mode Control

Minimum On-Time: 35ns

Programmable Frequency to 5MHz

Precision 400mV Enable Threshold, 1μA in Shutdown

Output Soft-Start with Voltage Tracking

Power Good Output

Die Temperature Monitor

Configurable for Paralleling Power Stages in Forced

Continuous Mode

Other features include a power good signal when the

output is in regulation, precision enable threshold, output

overvoltage protection, thermal shutdown, a temperature

monitor, clock synchronization, mode selection and

output short circuit protection. The device is available in

a compact 18-lead 3mm x 3mm LQFN package.

Thermally-Enhanced 3mm × 3mm LQFN Package

AEC-Q100 Qualified for Automotive Applications

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

APPLICATIONS

Automotive/Industrial/Communications

Servers, Telecom Power Supplies

Distributed DC Power Systems (POL)

FPGA, ASIC, µP Core Supplies

TYPICAL APPLICATION

Efficiency vs Load Current

ꢀ00

ꢀ0

ꢀ.0

ꢀ.ꢁ

ꢀ.0

ꢀ.ꢁ

0.ꢀ

1.2V 12.5A Step-Down Converter

ꢀ

ꢀ ꢁꢂꢃꢄ ꢅꢆꢇꢈꢉ ꢃꢊꢂꢋ0ꢌ0 ꢍꢎꢎꢌꢋ0ꢌ00ꢏ0

ꢀꢁ

ꢀꢁꢁꢂꢃꢂꢀꢄꢃꢅ

3.0V to 5.5V

22µF

MODE/SYNC

100nH

OUT

1.2V

12.5A

47µF

140k

100k

6.8pF

LTC3311

PGND

PGOOD

SSTT

×3

ꢀꢁꢂꢃR ꢄꢁꢅꢅ

1μF

0.1µF

AGND

ꢀ

ꢀ ꢁ.ꢁꢂ

ꢀꢁ

ITH

ꢀ

ꢀ ꢁ.ꢂꢃ

ꢀꢁꢂ

10k

470pF

ꢀ

ꢀ ꢁꢂꢃꢄ

ꢀꢁꢂ

274k

ꢀ

ꢀ0 ꢀꢁ ꢀꢁ

3311 TA01a

ꢀꢁꢂ

ꢀꢀꢁꢁ ꢂꢃ0ꢁꢄ

Rev. 0

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与LTC3311S相关器件

型号	品牌	获取价格	描述	数据表
LTC3311SIV	ADI	获取价格	5V, 12.5A Synchronous Step-Down Silent Switcher 2 in 3mm x 3mm LQFN
LTC3312S	ADI	获取价格	5V、双通道6A/双相12A降压型DC/DC稳压器
LTC3313	ADI	获取价格	5V、15A同步降压型Silent Switcher，采用3mm × 3mm LQFN封装
LTC3314	ADI	获取价格	采用2.2mm×2.7mm WLCSP封装的5V、双通道4A/双相8A降压型DC/DC稳压
LTC3315A	ADI	获取价格	5V, 12.5A Synchronous Step-Down Silent Switcher in 3mm x 3mm LQFN
LTC3315B	ADI	获取价格	5V, 12.5A Synchronous Step-Down Silent Switcher in 3mm x 3mm LQFN
LTC3330	Linear	获取价格	Energy Harvesting DC/DC with Battery Backup Low Noise LDO Post Regulator
LTC3330	ADI	获取价格	具能量收集电池寿命延长器的毫微功率降压-升压型 DC/DC 转换器
LTC3331	ADI	获取价格	具能量收集电池充电器的毫微功率降压-升压型 DC/DC 转换器
LTC3335	ADI	获取价格	具集成型库仑计数器的毫微功率降压-升压型 DC/DC 转换器

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