Model Selection Guide

Mechanical Dimensions

Notes:

Board Layout

Recommended Solder Profile

Derating Curve

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Model

Number

Input

Output

Efficiency

(%, Typ)

Fuse Rating

Slow-Blow

(mA)

Voltage (VDC)

Current (mA)

Voltage

(VDC)

Current

(mA, Max)

Current

(mA, Min)

Nominal

Range

Full-Load

No-Load

LF201ES

5

4.5 - 5.5

494

30

5.0

400.0

40.0

81

500

LF202ES

5

4.5 - 5.5

487

30

9.0

222.0

23.0

82

500

LF203ES

5

4.5 - 5.5

477

30

12.0

167.0

17.0

84

500

LF204ES

5

4.5 - 5.5

475

30

15.0

133.0

14.0

84

500

LF211ES

12

10.8 - 13.2

203

15

5.0

400.0

40.0

82

200

LF212ES

12

10.8 - 13.2

201

15

9.0

222.0

23.0

83

200

LF213ES

12

10.8 - 13.2

197

15

12.0

167.0

17.0

85

200

LF214ES

12

10.8 - 13.2

196

15

15.0

133.0

14.0

85

200

Notes:

1. Output load regulation is specified for a load change of 10% to 100%.

2. When measuring output ripple, it is recommended that an external 0.33 µF ceramic capacitor be

placed from the +Vout pin to the -Vout pin.

3. During operation, care must be taken not to exceed the specified input range of the unit or to allow

the output load to drop below the specified minimum (10% of full load). Operating the unit under

either of these conditions could cause damage to the unit.

4. These converters are specified for operation without external components. However, in some ap-

plications the addition of input/output capacitors will enhance stability and reduce output ripple.

Recommended capacitor values are:

Vin

Input

Capacitor

Vout

Output

Capacitor

5 VDC

4.7 µF

5 VDC

4.7 µF

12 VDC

2.2 µF

9 VDC

2.2 µF

12 VDC

1.0 µF

15 VDC

0.47 µF

For applications requiring very low output noise

levels, a simple LC filter should be effective.

5. It is recommended that a fuse be used on the

input of a power supply for protection. See the

Model Selection table above for the correct rating.

Pin Connections

Pin

Function

Pin

Function

1-Vin

8

NC

2+Vin

9

NC

3NC

10

NC

5NC

12

NC

6

-Vout

13

NC

7

+Vout

14

NC

NC = No Connection