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LTC3716EG

更新时间： 2024-11-23 22:55:55

品牌	Logo	应用领域
凌特 - Linear		稳压器开关
页数	文件大小	规格书
28页	440K
描述
2-Phase, 5-Bit VID, Current Mode, High Efficiency, Synchronous Step-Down Switching Regulator

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中文翻译

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LTC3716EG 数据手册

LTC3716

2-Phase, 5-Bit VID,

Current Mode, High Efficiency,

Synchronous Step-Down

Switching Regulator

FEATURES

DESCRIPTIO

The LTC^®3716 is a 2-phase, VID programmable, synchro-

nous step-down switching regulator controller that drives

twoN-channelexternalpowerMOSFETstagesinafixedfre-

quency architecture. The 2-phase controller drives its two

output stages out of phase at frequencies up to 300kHz to

minimize the RMS ripple currents in both input and output

capacitors.The2-phasetechniqueeffectivelymultipliesthe

fundamental frequency by two, improving transient re-

sponse while operating each channel at an optimum fre-

quency for efficiency. Thermal design is also simplified.

■

Output Stages Operate Antiphase Reducing Input

and Output Capacitance Requirements and Power

Supply Induced Noise

■

Dual Input Supply Capability for Load Sharing

■

5-Bit Mobile VID Code: V_OUT= 0.6V to 1.75V

■

±1% Output Voltage Accuracy

■

True Remote Sensing Differential Amplifier

■

Power Good Output Voltage Monitor

Supports Active Voltage Positioning

■

Current Mode Control Ensures Current Sharing

OPTI-LOOP^TMCompensation Minimizes C_OUT

■

An operating mode select pin (FCB) can be used to regu-

■

Three Operational Modes: PWM, Burst and Cycle Skip

Programmable Fixed Frequency: 150kHz to 300kHz

Wide V_INRange: 4V to 36V Operation

Adjustable Soft-Start Current Ramping

Internal Current Foldback and Short-Circuit Shutdown

Overvoltage Soft Latch Eliminates Nuisance Trips

late a secondary winding or select among three modes

includingBurstMode^TMoperationforhighestefficiency.An

internaldifferentialamplifierprovidestrueremotesensing

of the regulated supply’s positive and negative output ter-

minals as required in high current applications.

■

The RUN/SS pin provides soft-start and optional timed,

short-circuit shutdown. Current foldback limits MOSFET

dissipation during short-circuit conditions when the

overcurrentlatchoffisdisabled.OPTI-LOOPcompensation

allows the transient response to be optimized for a wide

range of output capacitors and ESR values.

^{Available in 36-L}U^{ead Narrow SSOP Package}

APPLICATIO S

■

Mobile Computer CPU Supply

, LTC and LT are registered trademarks of Linear Technology Corporation.

OPTI-LOOP and Burst Mode are trademarks of Linear Technology Corporation.

TYPICAL APPLICATIO

5V TO 28V

10µF

35V

×4

0.1µF

FCB

TG1

BOOST1

SW1

0.002Ω

RUN/SS

0.47µF

220pF

1µH

3.3k

LTC3716

BG1

SGND

PGND

SENSE1

PGOOD

–

5 VID BITS VID0–VID4

TG2

BOOST2

SW2

0.002Ω

OUT

EAIN

0.47µF

0.6V TO 1.75V

40A

1µH

ATTENOUT

ATTENIN

BG2

INTV

DIFFOUT

OUT

–

SENSE2

1000µF

10µF

–

×2

3716 F01

Figure 1. High Current Dual Phase Step-Down Converter

12 3 4 5 6 7...28

中文翻译

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与LTC3716EG相关器件

型号	品牌	获取价格	描述	数据表
LTC3716EG#PBF	Linear	获取价格	LTC3716 - 2-Phase, 5-Bit VID, Current Mode, High Efficiency, Synchronous Step-Down Switchi
LTC3716EG#TR	Linear	获取价格	LTC3716 - 2-Phase, 5-Bit VID, Current Mode, High Efficiency, Synchronous Step-Down Switchi
LTC3716EG#TRPBF	Linear	获取价格	LTC3716 - 2-Phase, 5-Bit VID, Current Mode, High Efficiency, Synchronous Step-Down Switchi
LTC3717	Linear	获取价格	Wide Operating Range, No RSENSE Step-Down Controller for DDR/QDR Memory Termination
LTC3717	ADI	获取价格	用于 DDR/QDR 存储器终端的宽工作范围、No RSENSE 降压型控制器
LTC3717-1	Linear	获取价格	Wide Operating Range, No RSENSE TM Step-Down Controller for DDR/QDR Memory Termination
LTC3717-1	ADI	获取价格	用于 DDR/QDR 存储器终端的宽工作范围、No RSENSE? 降压型控制器
LTC3717EGN	Linear	获取价格	Wide Operating Range, No RSENSE Step-Down Controller for DDR/QDR Memory Termination
LTC3717EGN#PBF	Linear	获取价格	暂无描述
LTC3717EGN#TRPBF	Linear	获取价格	LTC3717 - Wide Operating Range, No RSENSE Step-Down Controller for DDR/QDR Memory Terminat

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