Datasheet > LTC3734

LTC3734

更新时间： 2024-11-14 14:58:19

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
28页	296K
描述
用于 Intel 移动 CPU 的单相、高效率 DC/DC 控制器

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中文翻译

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数据手册

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LTC3734 数据手册

LTC3734

Single-Phase,

High Efficiency DC/DC

Controller for Intel Mobile CPUs

FEATURES

DESCRIPTION

The LTC^®3734 is a single-phase synchronous step-down

switching regulator controller that drives all N-channel

power MOSFETs in a constant frequency architecture. The

output voltage is programmable by six VID bits during

normal operation and by external resistors during initial

boot-up and deeper sleep state. The LTC3734 drives its

output stage at frequencies up to 550kHz. Powerful on-

chipgatedriverseliminatetheneedforexternalgatedriver

ICs, thus simplifying the design.

Wide Input Voltage Range: 4V to 30V

■

±±1 ꢀutput Voltage Accuracy

■

6-Bit IMVP-IV VID Code: V

= 0.7V to ±.708V

ꢀUT

■

Intel Compatible Power Saving Mode (PSIB)

Power Good ꢀutput with Adaptive Masking

Lossless Voltage Positioning

Resistor Programmable V

Deeper Sleep State

Resistor Programmable Deep Sleep Offset

at Boot-Up and

ꢀUT

■

Programmable Fixed Frequency: 210kHz to 550kHz

Adjustable Soft-Start Current Ramping

Foldback Output Current Limit

AnIntelcompatiblePSIBinputisprovidedtoselectbetween

two modes of operation. Fully enhanced synchronous

mode achieves a very small output ripple and very fast

transient response while power saving mode realizes

very high efficiency. OPTI-LOOP^®compensation allows

the transient response to be optimized for a wide range

of output capacitance and ESR values.

Short-Circuit Shutdown Timer with Defeat Option

Overvoltage Protection

Available in 32-Lead 5mm × 5mm × 0.8mm (Proﬁle)

QFN Package

APPLICATIONS

The LTC3734 is available in a small 5mm × 5mm QFN

package. For 2-phase applications refer to the LTC3735.

Mobile and Desktop Computers

L, LT, LTC, LTM, OPTI-LOOP, Burst Mode, Linear Technology and the Linear logo are registered

trademarks and Stage Shedding is a trademark of Linear Technology Corporation. All other

trademarks are the property of their respective owners.

■

Internet Servers

TYPICAL APPLICATION

5V TO 24V

MCH_PG

DPRSLPVR

STP_CPUB

PSIB

10µF

35V

×4

0.8µH

0.002Ω

PGND

OUT

FREQSET

0.7V TO 1.708V

20A

SENSE

OUT

VID5-VID0

PGOOD

–

6-BIT VID

270µF

SENSE

×3

12.7k

13.3k

LTC3734

RBOOT

56.2k

13.3k

RDPRSLP

RUN/SS

1.27M

100pF

RDPSLP

0.1µF

680pF

SGND

1.27M

OAOUT

–

4.5V TO 7V

BAT54A

4.7µF

BOOST

4.5V TO 7V

0.47µF

0.1µF

3734 F01

Figure 1. High Current Step-Down Converter

3734fa

12 3 4 5 6 7...28

中文翻译

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与LTC3734相关器件

型号	品牌	获取价格	描述	数据表
LTC3734EUH	Linear	获取价格	Single-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs
LTC3734EUH#PBF	Linear	获取价格	暂无描述
LTC3734EUH#TR	Linear	获取价格	LTC3734 - Single-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs; Package: Q
LTC3734EUH#TRPBF	Linear	获取价格	LTC3734 - Single-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs; Package: Q
LTC3735	Linear	获取价格	2-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs
LTC3735	ADI	获取价格	用于 Intel 移动 CPU 的两相、高效率 DC/DC 控制器
LTC3735EG#PBF	Linear	获取价格	LTC3735 - 2-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs; Package: SSOP;
LTC3736	Linear	获取价格	Dual 2-Phase, No RSENSE Synchronous Controller with Output Tracking
LTC3736	ADI	获取价格	具有输出跟踪功能的双通道、两相、No RSENSE 同步控制器
LTC3736-1	Linear	获取价格	No RSENSE Low EMI, Synchronous DC/DC Controller with Output Tracking

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