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Model Selection Guide

Notes:

1. When measuring output ripple, it is recommended that an external ceramic capacitor

2. Transient recovery is measured to within a 1% error band for a load step change

of 25%.

3. Short circuit protection is provided by a “hiccup mode” circuit.

4. The maximum control current at the on/off pin (pin 6) during a logic high is 50 µA.The

maximum control current to the on/off pin at logic low (-0.7V to 0.8V) is 1 mA. If the

on/off pin is left open, the unit operates. If it is grounded, the unit will shut off.

5. These units should not be operated with a load under 5% of full load.Operation at no-load

will not damage the unit, but they may not meet all specifications.

6. These units should not be operated over +85°C.Exceeding +85°C may damage the unit.

7. 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.

Model

Number

Input

Output

Efficiency

(%, Typ)

Over

Voltage

Protection

(VDC Typ)

Capacitive

Load

(µF, Max)

Fuse

Rating

Slow-Blow

(mA)

Voltage

(VDC)

Current

(mA, Max)

Current

(mA, Min)

Nominal

Range

Full-Load No-Load

MR2011S-05RU

110

40 - 160

204

15

5.0

4,000

200

89

6.2

4,020

400

MR2011S-12RU

110

40 - 160

206

8

12.0

1,667

83

88

15.0

1,600

400

MR2011S-15RU

110

40 - 160

206

8

15.0

1,333

67

88

18.0

1,000

400

MR2011S-24RU

110

40 - 160

206

8

24.0

833

42

88

28.8

470

400

Derating Curve

External Trim

Parameter

5.0

12

15

24

2.883

10.971

14.497

24.872

2.864

2.864

2.864

2.864

10.00

17.80

17.80

20.00

2.50

2.50

2.50

2.50

External Trim Notes:

An external resistor can be used to adjust the converter output up/down by about

10%. The connection is shown in the diagram at left. The required resistor value

is calculated by the formulas:

A

3

Where A =

2

A

3

Where A =

If not used