Datasheet > 电源电路 > 开关式稳压器或控制器> LTC3785EUF-PBF

LTC3785EUF-PBF

更新时间： 2024-11-09 05:43:55

品牌	Logo	应用领域
凌特 - Linear		电阻器控制器
页数	文件大小	规格书
20页	255K
描述
10V, High Effi ciency, Synchronous, No RSENSE Buck-Boost Controller

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LTC3785EUF-PBF 数据手册

LTC3785

10V, High Efﬁciency,

Synchronous, No R

SENSE

Buck-Boost Controller

DESCRIPTIO

FEATURES

The LTC^®3785 is a high power synchronous buck-boost

controller that drives all N-channel power MOSFETs from

input voltages above, below and equal to the output volt-

age. With an input range of 2.7V to 10V, the LTC3785 is

well suited for a wide variety of single or dual cell Li-Ion

or multi-cell alkaline/NiMH applications.

■

Single Inductor Architecture Allows V Above,

Below or Equal to V

OUT

■

2.7V to 10V Input and Output Range

Up to 96% Efﬁciency

Up to 10A of Output Current

All N-Channel MOSFETs, No R

SENSE

True Output Disconnect During Shutdown

Programmable Current Limit and Soft-Start

Optional Short-Circuit Shutdown Timer

Output Overvoltage and Undervoltage Protection

Programmable Frequency: 100kHz to 1MHz

Selectable Burst Mode^®Operation

Available in 24-Lead (4mm × 4mm) Exposed Pad

QFN Package

The operating frequency can be programmed from

100kHz to 1MHz. The soft-start time and current limit are

also programmable. The soft-start capacitor doubles as

the fault timer which can program the IC to latch off or

recycle after a determined off time. Burst Mode opera-

tion is user controlled and can be enabled by driving the

MODE pin high.

Protection features include foldback current limit, short-

circuit and overvoltage protection.

APPLICATIO S

, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology

■

Palmtop Computers

Corporation. No R

is a trademark of Linear Technology Corporation.

SENSE

All other trademarks are the property of their respective owners.

■

Handheld Instruments

■

Wireless Modems

Cellular Telephones

■

TYPICAL APPLICATIO

2.7V

OUT

4.7µF

TO 10V

SVIN

TG1

Efﬁciency vs Input Voltage

22µF

SENSE

100

= 3.3V

= 500kHz

OUT

OSC

BST1

SW1

SSW1

DRV

BG1

4.7µH

= 2A

LOAD

LTC3785

LOAD

= 1A

3.3V

OUT

SVOUT

TG2

MODE

BST2

2.5

5.5

8.5

RUN/SS

SW2

SSW2

100µF

LSET

(V)

3785 TA01b

CCM

BG2

GND

3785 TA01a

3785f

12 3 4 5 6 7...20

中文翻译

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与LTC3785EUF-PBF相关器件

型号	品牌	获取价格	描述	数据表
LTC3785EUF-TR	Linear	获取价格	10V, High Effi ciency, Synchronous, No RSENSE Buck-Boost Controller
LTC3785EUF-TRPBF	Linear	获取价格	10V, High Effi ciency, Synchronous, No RSENSE Buck-Boost Controller
LTC3785IUF	Linear	获取价格	IC 3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC24, 4 X 4 MM, PLASTIC, MO-22
LTC3785IUF#PBF	Linear	获取价格	LTC3785 - 10V, High Efficiency, Synchronous, No RSENSE Buck-Boost Controller; Package: QFN
LTC3785IUF#TR	Linear	获取价格	IC 3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC24, 4 X 4 MM, PLASTIC, MO-22
LTC3785IUF#TRPBF	Linear	获取价格	LTC3785 - 10V, High Efficiency, Synchronous, No RSENSE Buck-Boost Controller; Package: QFN
LTC3786	Linear Systems	获取价格	Multi-Phase Current Mode Step-Up DC/DC Controller
LTC3786	ADI	获取价格	低 IQ、同步升压型控制器
LTC3786EMSE#PBF	Linear	获取价格	LTC3786 - Low IQ Synchronous Boost Controller; Package: MSOP; Pins: 16; Temperature Range:
LTC3786EMSEPBF	Linear	获取价格	Low IQ Synchronous Boost Controller

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