LTC3862

更新时间： 2024-02-17 09:42:38

品牌	Logo	应用领域
凌特 - Linear		多相元件控制器
页数	文件大小	规格书
40页	612K
描述
Multi-Phase Current Mode Step-Up DC/DC Controller

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中文翻译

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LTC3862 数据手册

LTC3862

Multi-Phase Current Mode

Step-Up DC/DC Controller

FEATURES

DESCRIPTION

The LTC^®3862 is a two phase constant frequency, current

mode boost and SEPIC controller that drives N-channel

power MOSFETs. Two phase operation reduces system

ﬁlteringcapacitanceandinductancerequirements.The5V

gate drive is optimized for most automotive and industrial

grade power MOSFETs.

Wide V Range: 4V to 36V Operation

2-Phase Operation Reduces Input and Output

Capacitance

Fixed Frequency, Peak Current Mode Control

5V Gate Drive for Logic-Level MOSFETs

Adjustable Slope Compensation Gain

Adjustable Max Duty Cycle (Up to 96%)

Adjustableslopecompensationgainallowstheusertoﬁne-

tune the current loop gain, improving noise immunity.

Adjustable Leading Edge Blanking

1ꢀ Internal Voltage Reference

Theoperatingfrequencycanbesetwithanexternalresistor

over a 75kHz to 500kHz range and can be synchronized

to an external clock using the internal PLL. Multi-phase

operation is possible using the SYNC input, the CLKOUT

output and the PHASEMODE control pin allowing 2-, 3-,

4-, 6- or 12-phase operation.

Programmable Operating Frequency with One

External Resistor (75kHz to 500kHz)

Phase-Lockable Fixed Frequency 50kHz to 650kHz

SYNC Input and CLKOUT for 2-, 3-, 4-, 6- or

12-Phase Operation (PHASEMODE Programmable)

Internal 5V LDO Regulator

24-Lead Narrow SSOP Package

Otherfeaturesincludeaninternal5VLDOwithundervoltage

lockout protection for the gate drivers, a precision RUN

pin threshold with programmable hysteresis, soft-start

and programmable leading edge blanking and maximum

duty cycle

5mm × 5mm QFN with 0.65mm Lead Pitch and

24-Lead Thermally Enhanced TSSOP Packages

APPLICATIONS

Automotive, Telecom and Industrial Power Supplies

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

All other trademarks are the property of their respective owners. Protected by U.S. Patents,

including 6144194, 6498466, 6611131.

TYPICAL APPLICATION

5V TO 36V

22μF

50V

84.5k

19.4μH 19.4μH

OUT

48V

Efﬁciency vs Output Current

24.9k

5A (MAX)

RUN

INTV

GATE1

= 48V

OUT

SENSE1

= 12V

220μF

50V

4.7μF

10nF

0.006Ω

LTC3862

–

BLANK

FREQ

SENSE1

66.5k

10k

GATE2

SYNC

SENSE2

= 24V

PLLFLTR

10nF

0.006Ω

= 5V

–

SENSE2

1nF

3V8

PGND

CLKOUT

SLOPE

10nF

68.1k

MAX

ITH

PHASEMODE

SGND

100

1000

LOAD CURRENT (mA)

10000

475k

12.4k

100pF

3862 TA01b

3862 TA01

3862fb

12 3 4 5 6 7...40

中文翻译

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与LTC3862相关器件

型号	品牌	获取价格	描述	数据表
LTC3862-1	Linear	获取价格	Multi-Phase Current Mode Step-Up DC/DC Controller
LTC3862-1	Linear Systems	获取价格	Multi-Phase Current Mode Step-Up DC/DC Controller
LTC3862-1	ADI	获取价格	多相电流模式升压型 DC/DC 控制器
LTC3862-2	Linear Systems	获取价格	Multi-Phase Current Mode Step-Up DC/DC Controller
LTC3862-2	ADI	获取价格	多相电流模式升压型 DC/DC 控制器
LTC3862EFE#PBF	Linear	获取价格	LTC3862 - Multi-Phase Current Mode Step-Up DC/DC Controller; Package: TSSOP; Pins: 24; Tem
LTC3862EFE-1#PBF	Linear	获取价格	LTC3862-1 - Multi-Phase Current Mode Step-Up DC/DC Controller; Package: TSSOP; Pins: 24; T
LTC3862EFE-1-PBF	Linear	获取价格	Multi-Phase Current Mode Step-Up DC/DC Controller
LTC3862EFE-1-TRPBF	Linear	获取价格	Multi-Phase Current Mode Step-Up DC/DC Controller
LTC3862EFE-PBF	Linear	获取价格	Multi-Phase Current Mode Step-Up DC/DC Controller

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