Datasheet > LNK6407K-TL

LNK6407K-TL

更新时间： 2022-09-29 19:46:46

品牌	Logo	应用领域
帕沃英蒂格盛 - POWERINT		/
页数	文件大小	规格书
18页	2342K
描述
IC LINKSWITCH CV/CC 7.5W 12ESOP

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数据手册

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LNK6407K-TL 数据手册

LNK64x4-64x8

ꢉꢃꢈꢊN

ꢆꢉꢇ

ꢃꢅꢋꢂLꢈꢎꢁꢃ

6 ꢏ

ꢌꢐꢑꢈꢀꢀ

ꢆꢌꢑꢇ

ꢍ

6 ꢌ

ꢄ ꢌ

ꢅꢆ

ꢇꢈꢉ

ꢍ

Reꢊeꢋ

ꢌ_{ꢁꢐꢁꢏꢁꢉ}

ꢉ

ꢖ

ꢀꢎꢈꢎꢅ

ꢓꢈꢄꢔꢊNꢅ

ꢒꢅꢅꢉꢌꢈꢄK

ꢆꢒꢌꢇ

ꢌ_ꢉꢓ

ꢋ_{ꢍꢎꢏꢀꢐꢑꢂꢇꢈꢉ}

ꢁ_ꢐꢁꢏ

ꢔC_ꢏꢎꢗ

ꢔꢕꢖve

ꢌ_{ꢁꢐꢁꢏꢁꢉ}

ꢄꢈꢌLꢅ ꢉꢃꢁꢑ

ꢄꢁꢓꢑꢅNꢀꢈꢎꢊꢁN

ꢒꢈꢂLꢎ

ꢈꢂꢎꢁ-ꢃꢅꢀꢎꢈꢃꢎ

ꢁꢑꢅN-Lꢁꢁꢑ

ꢅꢆ

6.ꢄ ꢌ

ꢎꢔꢅꢃꢓꢈL

ꢀꢔꢂꢎꢉꢁꢕN

ꢊNꢉꢂꢄꢎꢈNꢄꢅ

ꢄꢁꢃꢃꢅꢄꢎꢊꢁN

ꢔC_ꢏꢎꢗ

ꢋ_{ꢍꢎꢏꢀꢐꢑꢂꢁꢒꢀꢈꢉ}

ꢋ_{ꢍꢎꢏꢀꢐꢑꢂꢇꢈꢉ}

ꢀꢈꢓꢑLꢅ

ꢉꢅLꢈꢐ

ꢋ_{ꢍꢎꢏꢀꢐꢑꢂꢁꢒꢀꢈꢉ}

ꢁꢀꢄꢊLLꢈꢎꢁꢃ

ꢀꢁꢂꢃꢄꢅ

ꢆꢀꢇ

ꢍ

ꢁ_ꢐꢁꢏ

ꢀꢁꢂꢃꢄꢅ

ꢆꢀꢇ

ꢌ_{ꢁꢐꢁꢏꢁꢉ}

ꢄꢁNꢀꢎꢈNꢎ

ꢄꢂꢃꢃꢅNꢎ

Cꢘꢕꢕeꢙꢋ ꢐꢖꢚꢖꢋ

Cꢛꢚꢜꢝꢕꢝꢋꢛꢕ

LꢅꢈꢉꢊNꢋ

ꢅꢉꢋꢅ

ꢌLꢈNKꢊNꢋ

ꢀꢁꢂ6660ꢂ0ꢃ0ꢄ1ꢄ

Figure 2

Functional Block Diagram.

Pin Functional Description

ꢌ ꢈꢒꢖꢗꢒꢡꢐ

ꢓꢐꢂꢚꢈ-ꢅꢉꢙ

DRAIN (D) Pin:

This pin is the power MOSFET drain connection. It provides

internal operating current for both start-up and steady-state

operation.

ꢌxꢍꢎꢏꢐꢑ ꢈꢒꢑ

ꢓꢔꢕ ꢇꢒꢖꢗ ꢂꢘꢑꢐꢙ

ꢚꢕꢛꢐꢜꢕꢒꢝꢝꢞ

ꢉꢎꢕꢕꢐꢖꢛꢐꢑ ꢛꢎ

ꢂꢔꢟꢠꢉꢌ ꢈꢘꢕ

BYPASS (BP) Pin:

ꢋ ꢈꢒꢖꢗꢒꢡꢐ ꢓꢂꢔ-8ꢉꢙ

This pin is the connection point for an external 1 mF bypass capacitor

for the internally generated 6 V supply.

ꢆꢇ ꢀ

8 ꢂ

ꢅ ꢂ

6 ꢂ

ꢣ ꢂ

FEEDBACK (FB) Pin:

ꢇꢈ ꢁ

ꢀ ꢁ ꢊ 4 ꢣ

ꢅ

During normal operation, switching of the power MOSFET is

controlled by this pin. This pin senses the AC voltage on the

bias winding. This control input regulates both the output

voltage in CV mode and output current in CC mode based on

the ﬂyback voltage of the bias winding. The internal induc-

tance correction circuit uses the forward voltage on the bias

winding to sense the bulk capacitor voltage.

ꢋ 4

ꢌxꢍꢎꢏꢐꢑ ꢈꢒꢑ ꢓꢔꢕ ꢇꢎꢛꢛꢎꢢꢙ

ꢚꢕꢛꢐꢜꢕꢒꢝꢝꢞ ꢉꢎꢕꢕꢐꢖꢛꢐꢑ ꢛꢎ

ꢂꢔꢟꢠꢉꢌ ꢈꢘꢕ

K ꢈꢒꢖꢗꢒꢡꢐ

ꢓꢐꢂꢔꢈ-ꢀꢁꢇꢙ

ꢆꢇ ꢀ

ꢇꢈ ꢁ

Nꢉ ꢊ

Nꢉ 4

ꢀꢁ ꢂ

ꢀꢀ ꢂ

ꢀꢃ ꢂ

ꢄ ꢂ

SOURCE (S) Pin:

This pin is internally connected to the output MOSFET source

for high-voltage power and control circuit common returns.

8 ꢂ

ꢋ 6

ꢅ ꢂ

ꢀꢁꢂ6ꢃ06ꢂ0ꢄ0ꢅ1ꢅ

Figure 3. Pin Conﬁguration.

Rev. C 03/16

www.power.com

123 4 5 6 7...18

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