Datasheet > LNK305DNTL

LNK305DNTL

更新时间： 2022-02-26 09:39:22

品牌	Logo	应用领域
帕沃英蒂格盛 - POWERINT		/
页数	文件大小	规格书
20页	712K
描述
LinkSwitch-TN Family Lowest Component Count, Energy-Effi cient Off-Line Switcher IC

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数据手册

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LNK305DNTL 数据手册

LNK302/304-306

TOPOLOGY BASIC CIRCUIT SCHEMATIC

KEY FEATURES

High-Side

Buck –

Direct

1. Output referenced to input

2. Positive output (V_O) with respect to -V_IN

3. Step down – V_O< V_IN

Feedback

4. Low cost direct feedback (±10% typ.)

LinkSwitch-TN

V_IN

V_O

PI-3751-121003

High-Side

Buck –

Optocoupler

Feedback

1. Output referenced to input

2. Positive output (V_O) with respect to -V_IN

3. Step down – V_O< V_IN

4. Optocoupler feedback

LinkSwitch-TN

- Accuracy only limited by reference

choice

V_IN

V_O

- Low cost non-safety rated opto

- No pre-load required

5. Minimum no-load consumption

PI-3752-121003

Low-Side

Buck –

Optocoupler

Feedback

LinkSwitch-TN

V_IN

V_O

1. Output referenced to input

2. Negative output (V_O) with respect to +V_IN

3. Step down – V_O< V_IN

PI-3753-111903

4. Optocoupler feedback

- Accuracy only limited by reference

choice

Low-Side

Buck –

Constant

Current LED

Driver

I_O

LinkSwitch-TN

- Low cost non-safety rated opto

- No pre-load required

- Ideal for driving LEDs

V_F

V_IN

PI-3754-112103

V_F

I_O

R =

High-Side

Buck Boost –

Direct

Feedback

LinkSwitch-TN

1. Output referenced to input

V_IN

V_O

2. Negative output (V_O) with respect to +V_IN

3. Step up/down – V_O> V_INorV_O< V_IN

4. Low cost direct feedback (±10% typ.)

5. Fail-safe – output is not subjected to input

voltage if the internal MOSFET fails

6. Ideal for driving LEDs – better accuracy

and temperature stability than Low-side

Buck constant current LED driver

PI-3755-121003

High-Side

Buck Boost –

Constant

Current LED

Driver

2 V

300 Ω

R_SENSE

I_O

2 kΩ

R_SENSE

I_O

LinkSwitch-TN

V_IN

10 μF

50 V

100 nF

PI-3779-120803

Table 2. Common Circuit Conﬁgurations Using LinkSwitch-TN. (continued on next page)

²6^-6

Rev. I 11/08

1...3 4 567 8 9...20

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