Datasheet > LNK363GN-TL

LNK363GN-TL

更新时间： 2024-02-23 15:52:33

品牌	Logo	应用领域
帕沃英蒂格盛 - POWERINT		开关光电二极管
页数	文件大小	规格书
16页	783K
描述
IC OFFLINE SWIT HV 8SMD

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LNK363GN-TL 技术参数

是否Rohs认证：	符合	生命周期：	Active
零件包装代码：	SOIC	包装说明：	SOP,
针数：	8	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	0.86	其他特性：	REQUIRES AN AC SUPPLY OF 85 TO 265 V
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制技术：	PULSE WIDTH MODULATION
JESD-30 代码：	R-PDSO-G7	长度：	9.575 mm
功能数量：	1	端子数量：	7
最高工作温度：	125 °C	最低工作温度：	-40 °C
最大输出电流：	0.4 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified	座面最大高度：	3.98 mm
表面贴装：	YES	切换器配置：	SINGLE
最大切换频率：	140 kHz	温度等级：	AUTOMOTIVE
端子形式：	GULL WING	端子节距：	2.54 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	6.35 mm	Base Number Matches：	1

LNK363GN-TL 数据手册

LNK362-364

CY1

100 pF

250 VAC

6.2 V,

330 μF

16 V

1 mH

322 mA

EE16

1N4934

NC NC

VR1

BZX79-

B5V1

RF1

8.2 Ω

2.5 W

3.9 k

1/8 W

1N4005 1N4005

5.1 V, 2%

390 Ω

1/8 W

3.3 μF

400 V

3.3 μF

400 V

85-265

VRMS

1 k

1/8 W

PC817A

LinkSwitch-XT

LNK362P

100 nF

50 V

1N4005 1N4005

1 mH

PI-4162-110205

Figure 5. 2 W Universal Input CV Adapter Using LNK362.

The rectiﬁed and ﬁltered input voltage is applied to the primary

winding of T1. The other side of the primary is driven by the

integrated MOSFETin U1. No primary clamp is required as the

low value and tight tolerance of the LNK362 internal current

limit allows the transformer primary winding capacitance to

provide adequate clamping of the leakage inductance drain

voltage spike.

Applications Example

A 2 W CV Adapter

The schematic shown in Figure 5 is a typical implementation of

a universal input, 6.2 V 7%, 322 mA adapter using LNK362.

ThiscircuitmakesuseoftheClamplesstechniquetoeliminatethe

primary clamp components and reduce the cost and complexity

of the circuit.

The secondary of the ﬂyback transformer T1 is rectiﬁed by D5,

a low cost, fast recovery diode, and ﬁltered by C4, a low ESR

capacitor. The combined voltage drop across VR1, R2 and the

LED of U2 determines the output voltage. When the output

voltage exceeds this level, current will ﬂow through the LED

of U2. As the LED current increases, the current fed into the

FEEDBACK pin of U1 increases until the turnoff threshold

current (~49 μA) is reached, disabling further switching cycles

of U1.At full load, almost all switching cycles will be enabled,

and at very light loads, almost all the switching cycles will be

disabled, giving a low effective frequency and providing high

light load efﬁciency and low no-load consumption.

The EcoSmart features built into the LinkSwitch-XT family

allow this design to easily meet all current and proposed

energyefﬁciencystandards,includingthemandatoryCalifornia

Energy Commission (CEC) requirement for average operating

efﬁciency.

The AC input is rectiﬁed by D1 to D4 and ﬁltered by the bulk

storage capacitors C1 and C2. Resistor RF1 is a ﬂameproof,

fusible, wire wound type and functions as a fuse, inrush current

limiter and, together with the π ﬁlter formed by C1, C2, L1

and L2, differential mode noise attenuator. Resistor R1 damps

ringing caused by L1 and L2.

Resistor R3 provides 1 mA through VR1 to bias the Zener

closer to its test current. Resistor R2 allows the output voltage

to be adjusted to compensate for designs where the value of the

Zener may not be ideal, as they are only available in discrete

voltage ratings. For higher output accuracy, the Zener may be

replaced with a reference IC such as the TL431.

This simple input stage, together with the frequency jittering of

LinkSwitch-XT, a low value Y1 capacitor and PI’s E-Shield™

windings within T1, allow the design to meet both conducted

and radiated EMI limits with >10 dBμV margin. The low value

of CY1 is important to meet the requirement for a very low

touch current (the line frequency current that ﬂows through

CY1) often speciﬁed for adapters, in this case <10 μA.

2-4

Rev. E 11/08

1 2 345 6 7...16

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