Datasheet > LT8705

LT8705

更新时间： 2023-12-20 18:45:50

品牌	Logo	应用领域
亚德诺 - ADI		开关控制器
页数	文件大小	规格书
44页	495K
描述
80V VIN 和 VOUT 同步、四开关、降压-升压型 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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LT8705 数据手册

LT8705

80V V and V

OUT

Synchronous 4-Switch Buck-

Boost DC/DC Controller

FeaTures

DescripTion

The LT^®8705 is a high performance buck-boost switch-

ing regulator controller that operates from input voltages

above, below or equal to the output voltage. The part has

integrated input current, input voltage, output current

and output voltage feedback loops. With a wide 2.8V to

80V input and 1.3V to 80V output range, the LT8705 is

compatible with most solar, automotive, telecom and

battery-powered systems.

Single Inductor Allows V Above, Below, or Equal

to Regulated V

OUT

V Range 2.8V (Need EXTV > 6.4V) to 80V

Range: 1.3V to 80V

OUT

Quad N-Channel MOSFET Gate Drivers

Synchronous Rectiﬁcation: Up to 98% Efﬁciency

Input and Output Current Monitor Pins

Synchronizable Fixed Frequency: 100kHz to 400kHz

Integrated Input Current, Input Voltage, Output Cur-

rent and Output Voltage Feedback Loops

Clock Output Usable To Monitor Die Temperature

Available in 38-Lead (5mm × 7mm) QFN and TSSOP

Packages with the TSSOP Modiﬁed for Improved

High Voltage Operation

TheLT8705includesservopinstoindicatewhichfeedback

loopsareactive.TheMODEpinselectsamongBurstMode^®

operation, discontinuous orcontinuous conduction mode

at light loads. Additional features include a 3.3V/12mA

LDO,asynchronizablefixedoperatingfrequency,onboard

gatedrivers, adjustableUVLO, alongwithinputandoutput

current monitoring with programmable maximum levels.

applicaTions

L, LT, LTC, LTM, Linear Technology, Burst Mode, µModule and the Linear logo are registered

trademarks of Linear Technology Corporation. All other trademarks are the property of their

respective owners.

High Voltage Buck-Boost Converters

Input or Output Current Limited Converters

Typical applicaTion

Telecom Voltage Stabilizer

×2

22µH

OUT

48V

36V TO

80V

4.7µF

×4

220µF

×2

4.7µF

×6

220µF

×2

DIODE

1nF

10Ω

0.22µF

10mΩ

2Ω

×2

2Ω

×2

392k

Efficiency and Power Loss

100

TG1 BOOST1 SW1 BG1 CSP

CSNIN

CSPIN

CSN

GND BG2 SW2 BOOST2 TG2

CSPOUT

CSNOUT

EXTV

SHDN

SWEN

LDO33

MODE

FBIN

FBOUT

100k

INTV

10k

GATEV

4.7µF

LT8705

SRVO_FBIN

SRVO_FBOUT

SRVO_IIN

4Ω

LOAD

= 48V

= 2A

OUT

71.5k

SRVO_IOUT

IMON_IN

(V)

1µF

8705 TA01b

IMON_OUT

BOOST1 BOOST2

CLKOUT

202kHz

SYNC

20k

215k

56.2k

4.7µF

1µF

220pF

3.3nF

8705 TA01

8705ff

For more information www.linear.com/LT8705

12 3 4 5 6 7...44

中文翻译

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与LT8705相关器件

型号	品牌	获取价格	描述	数据表
LT8705A	ADI	获取价格	80V VIN 和 VOUT 同步、四开关、降压-升压型 DC/DC 控制器
LT8708	ADI	获取价格	具有双向功能的 80V 同步 4 开关升降压 DC/DC 控制器
LT8708-1	ADI	获取价格	适用于 LT8708 多相系统的 80V 同步 4 开关升降压 DC/DC 从属控制器
LT8709	ADI	获取价格	负输入同步多拓扑 DC/DC 控制器
LT8710	Linear	获取价格	Synchronous SEPIC/ Inverting/Boost Controller with Output Current Control
LT8710	ADI	获取价格	具输出电流控制功能的同步 SEPIC / 负输出 / 升压型控制器
LT8710_15	Linear	获取价格	Synchronous SEPIC/ Inverting/Boost Controller with Output Current Control
LT8711	ADI	获取价格	具 42V 输入能力的微功率同步多拓扑控制器
LT8711EFE#PBF	Linear	获取价格	LT8711 - Micropower Synchronous Multitopology Controller with 42V Input Capability; Packag
LT8711EUDC#PBF	Linear	获取价格	LT8711 - Micropower Synchronous Multitopology Controller with 42V Input Capability; Packag

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