A9786-AL [COILCRAFT]

Planar Magnetics; 平面磁性元件


型号：	A9786-AL
厂家：	Coilcraft lnc.
描述：	Planar Magnetics 平面磁性元件
文件：	总2页 (文件大小：99K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Document 328-1

For National Semiconductor

Planar Magnetics _{LM5041 IC}

This planar transformer and inductor pair were designed

specifically for National Semiconductor’s LM5041 IC.

The A9786-A transformer is engineered for use in high-

current telecom power supply applications that require

high efficiency in a low-profile package.The auxiliary

winding can be used to control input current to PWMs. It

offers very high current handling capability and ex-

tremely low DC resistance in a low profile package.

Coilcraft’s A9787-A inductor is designed as the output

choke for the LM5041.

Planar magnetics offer high power densities along with

great reliability and repeatability. Windings are etched

into a printed circuit board, ensuring high efficiency and

consistency.

Request free evaluation samples by contacting Coilcraft

or visiting www.coilcraft.com.

Transformer

number¹power (W) range (V) voltage (V)

Input

Output

current

(A rms)

Primary

inductance¹

min (mH)

Leakage

inductance²

max (µH)

Pri/sec

isolation

(Vdc)

DCRmax

(mOhms)

Part

Output

voltage

Output

A9786-AL_

150

36 – 75

2.5

60.0

1.25

0.90

Primary: 62.5(1 – 3)

Secondary: 0.91(5,6 – 9,10)

200(4 – 11)

1100

1. When ordering, please specify packaging code:

A9786-ALD

2. InductancemeasuredonanAgilent/HP4284betweenpins1and3at250

kHz, 0.1 Vrms, 0 Adc.

3. Leakage inductance measured between pins 1 and 3 at 100 kHz,

0.1 Vrms, 0 Adc with all secondary pins shorted.

4. Operating temperature range: –40°C to +85°C.

5. Electrical specifications at 25°C.

Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic

tape (125 parts per full reel).

B = Less than full reel. In tape, but not machine ready. To

have a leader and trailer added ($25 charge), use

code letter D instead.

5,6

0.45

max

11,43

7,8

SEC

AUX

0.004/0,10

1.32

33,53

1.21

30,73

1.15

PRI

1.48

max

9,10

37,59

29,21

0.31

7,87

0.285

7,24

1.23

31,24

max

0.12 0.175

3,05 4,45

Recommended

Land Pattern

0.075

Weight: 33.4 g

1,91

Terminations: Matte tin over nickel over brass

Tape and reel: 125/13″ reel 56 mm tape

Specifications subject to change without notice.

Please check our website for latest information.

Document328-1 Revised06/09/08

Document 328-2

Planar Magnetics for National Semiconductor LM5041

Output Inductor

Inductance²

@ 7.5 Adc

min (µH)

Part

@ 0 Adc

(µH)

DCRmax

(mOhms)

Isolation³

(Vdc)

Isat⁴

(A)

Irms⁵

(A)

number¹

A9787-AL_

57 7%

47.0

17.0

1100

8.1

12.0

1. When ordering, please specify packaging code:

2. Inductance measured on an Agilent/HP 4284 at 250 kHz, 0.1 Vrms.

3. From pins 1,2 to core.

4. DC current at which inductance drops 10% (typ) from its value without

current.

5. Average current for a 40°C rise above 25°C ambient.

6. Operating temperature range: –40°C to +85°C.

7. Electrical specifications at 25°C.

A9787-ALD

Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic

tape (125 parts per full reel).

B = Less than full reel. In tape, but not machine ready. To

have a leader and trailer added ($25 charge), use

code letter D instead.

Typical L vs Frequency

Typical L vs Current

1000

100

0.1

100

1000

10000

0.1

100

Frequency (MHz)

Current (A)

1,2

3,4

0.45

11,43

max

0.004/0,10

For mounting

stability only

1.30

37,59

max

1.145

29,08

0.12

3,05

For mounting

stability only

1.23

31,24

0.34

8,64

max

0.30

7,62

0.075

1,91

Recommended

Land Pattern

Weight: 31.0 g

Terminations: Matte tin over nickel over brass

Tape and reel: 125/13″ reel 56 mm tape

Specifications subject to change without notice.

Please check our website for latest information.

Document328-2 Revised06/09/08

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