Datasheet > S001621

S001621

更新时间： 2022-03-30 02:49:17

品牌	Logo	应用领域
凌特 - Linear		光电控制器
页数	文件大小	规格书
20页	257K
描述
Isolated No Opto-Coupler Flyback Controller

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

S001621 数据手册

LT3798

Isolated No Opto-Coupler

Flyback Controller

with Active PFC

FEATURES

DESCRIPTION

ꢀhe Lꢀ^®3798 is a constant-voltage/constant-current iso-

lated flyback controller that combines active power factor

correction (PFC) with no opto-coupler required for output

voltage feedback into a single-stage converter. A Lꢀ3798

baseddesigncanachieveapowerfactorofgreaterthan0.97

by actively modulating the input current, allowing compli-

ance with most Harmonic Current Emission requirements.

Isolated PFC Flyback with Minimum Number of

External Components

V and V

Limited Only by External Components

OUT

Active Power Factor Correction

Low Harmonic Distortion

No Opto-Coupler Required

Constant-Current and Constant-Voltage Regulation

Accurate Regulated Voltage and Current (±±5 ꢀypical)

Energy Star Compliant (<0.±W No Load Operation)

ꢀhermally Enhanced 16-lead MSOP Package

ꢀhe Lꢀ3798 is well suited for a wide variety of off-line

applications. ꢀhe input range can be scaled up or down,

depending mainly on the choice of external components.

Efficiencies higher than 865 can be achieved with output

powerlevelsupto100W.Inaddition,theLꢀ3798caneasily

be designed into high DC input applications.

APPLICATIONS

Offline ±W to 100W+ Applications

High DC V Isolated Applications

L, Lꢀ, LꢀC, LꢀM, Linear ꢀechnology and the Linear logo are registered trademarks of Linear

ꢀechnology Corporation. All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including ±438499 and 7471±22.

Offline Bus Converter (12V, 24V or 48V Outputs)

TYPICAL APPLICATION

Universal Input 24W PFC Bus Converter

V_OUTvs I_OUT

24.±0

90V

ꢀO 26±V

24.2±

499k

100k

20Ω

24.00

23.7±

23.±0

4:1:1

0.1μF

4.7pF

10μF

VAC = 90V

VAC = 120V

VAC = 220V

VAC = 265V

90.9k

4.99k

DCM

24V

IN_SENSE

EN/UVLO

0.2

0.4

0.6

(A)

0.8

±60μF

× 2

22pF

9±.3k

100k

OUꢀ

Lꢀ3798

3798 ꢀA01b

REF

20Ω

40.2k

16.±k

CꢀRL3

CꢀRL2

GAꢀE

SENSE

INꢀV

CꢀRL1

OVP

0.0±Ω

4.7μF

2.2nF

GND

–

221k

COMP COMP

0.1μF

2.2μF

3798 ꢀA01a

3798f

12 3 4 5 6 7...20

下载PDF

与S001621相关器件

型号	品牌	描述	获取价格	数据表
S-00201G	ETC	LCD BACK LIGHT, COG TYPE	获取价格
S002611	CENTRAL	Power Bipolar Transistor, 10A I(C), 60V V(BR)CEO, 1-Element, PNP, Silicon, TO-220AB, Plast	获取价格
S-00403G	ETC	LCD BACK LIGHT, TAB TYPE	获取价格
S-00406VG	ETC	LCD BACK LIGHT, COG TYPE	获取价格
S00565050	SUMIDA	Telecom Transformer, RADIAL LEADED, ROHS COMPLIANT	获取价格
S0080074	SUMIDA	Variable Inductor, Shielded, ROHS COMPLIANT	获取价格