Datasheet > LNK304P/G/D

LNK304P/G/D

更新时间： 2024-02-16 04:32:19

品牌	Logo	应用领域
FERYSTER		开关
页数	文件大小	规格书
20页	761K
描述
Lowest Component Count, Energy-Effi cient Off-Line Switcher IC

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技术参数
数据手册

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LNK304P/G/D 技术参数

生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	DIP,	针数：	8
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.6
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制技术：	PULSE WIDTH MODULATION
JESD-30 代码：	R-PDIP-T8	长度：	9.575 mm
功能数量：	1	端子数量：	8
最高工作温度：	85 °C	最低工作温度：	-20 °C
最大输出电流：	0.4 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP	封装形状：	RECTANGULAR
封装形式：	IN-LINE	认证状态：	Not Qualified
表面贴装：	NO	切换器配置：	BUCK
最大切换频率：	70 kHz	温度等级：	COMMERCIAL EXTENDED
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	宽度：	6.35 mm
Base Number Matches：	1

LNK304P/G/D 数据手册

LNK302/304-306

LinkSwitch-TN

RF1

INPUT

OUTPUT

Optimize hatched copper areas (

) for heatsinking and EMI.

PI-3750-121106

Figure 6a. Recommended Printed Circuit Layout for LinkSwitch-TN in a Buck Converter Conﬁguration using P or G Package.

RF1

INPUT

OUTPUT

Optimize hatched copper areas (

) for heatsinking and EMI.

PI-4546-011807

Figure 6b. Recommended Printed Circuit Layout for LinkSwitch-TN in a Buck Converter Conﬁguration using D Package

to Bottom Side of the Board.

cycles are skipped. To provide overload protection if no cycles

are skipped during a 50 ms period, LinkSwitch-TN will enter

auto-restart (LNK304-306), limiting the average output power

to approximately 6% of the maximum overload power. Due to

trackingerrorsbetweentheoutputvoltageandthevoltageacross

C3 at light load or no load, a small pre-load may be required

(R4). For the design in Figure 5, if regulation to zero load is

required, then this value should be reduced to 2.4 kΩ.

1) Buck converter topology.

2) The minimum DC input voltage is ≥70 V. The value of

input capacitance should be large enough to meet this

criterion.

3) For CCM operation a KRP* of 0.4.

4) Output voltage of 12 VDC.

5) Efﬁciency of 75%.

6) A catch/freewheeling diode with t_rr≤75 ns is used for

MDCM operation and for CCM operation, a diode with

t_rr≤35 ns is used.

Key Application Considerations

7) The part is board mounted with SOURCE pins soldered

to a sufﬁcient area of copper to keep the SOURCE pin

temperature at or below 100 °C.

LinkSwitch-TN Design Considerations

Output Current Table

*KRP is the ratio of ripple to peak inductor current.

Data sheet maximum output current table (Table 1) represents

the maximum practical continuous output current for both

mostlydiscontinuousconductionmode(MDCM)andcontinuous

conductionmode(CCM)ofoperationthatcanbedeliveredfrom

a given LinkSwitch-TN device under the following assumed

conditions:

LinkSwitch-TN Selection and Selection Between

MDCM and CCM Operation

SelecttheLinkSwitch-TNdevice,freewheelingdiodeandoutput

inductor that gives the lowest overall cost. In general, MDCM

²5^-5

Rev. H 12/06

1 2 3 456 7 8...20

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与LNK304P/G/D相关器件

型号	品牌	描述	获取价格	数据表
LNK304PGD	POWERINT	Lowest Component Count, Energy-Efficient Off-Line Switcher IC	获取价格
LNK304PN	POWERINT	LinkSwitch-TN Family Lowest Component Count, Energy-Effi cient Off-Line Switcher IC	获取价格
LNK305	POWERINT	Lowest Component Count, Energy-Efficient Off-Line Switcher IC	获取价格
LNK305D	POWERINT	Lowest Component Count, Energy-Efficient Off-Line Switcher IC	获取价格
LNK305DG	POWERINT	LinkSwitch-TN Family Lowest Component Count, Energy-Effi cient Off-Line Switcher IC	获取价格
LNK305DGTL	POWERINT	LinkSwitch-TN Family Lowest Component Count, Energy-Effi cient Off-Line Switcher IC	获取价格

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