Notes:

1. An overtemperature protection circuit shuts down the converter if

the temperature at the output inductor exceeds 115°C. The unit will

restart automatically when the temperature at the output inductor

drops below 110°C.

2. For a 3.3V output, the input range is 4.0 to 5.5 VDC

3. No minimum load is required. Operation at no-load will not

damage these units.

4. These converters require no additional external components to

meet specifications. However, using external capacitors as shown

in the typical connection drawing at right may lower noise in some

applications.

5. Transient recovery is measured to within a 1% error band for a load

step change of 25% to 100%.

6. It is recommended that a fuse be used on the input of a power

supply for protection. Contact the factory for the correct rating.

Model

Number

Input

Output

Voltage (VDC)

Voltage

(VDC)

Current

(A, Max)

Nominal

Range

LR5003W-06

3.3

3.0 - 5.5

0.75 - 3.3

6.0

LR5003W-10

3.3

3.0 - 5.5

0.75 - 3.3

10.0

LR5003W-16

3.3

3.0 - 5.5

0.75 - 3.3

16.0

LR5012W-06

12

10.0 - 14.0

0.75 - 5.0

6.0

LR5012W-10

12

10.0 - 14.0

0.75 - 5.0

10.0

LR5012W-16

12

10.0 - 14.0

0.75 - 5.0

16.0

2. When not being used, the Remote Sense pin (pin 3) should be

3. The output voltage of the LR50xxW may be trimmed down by

connecting an external resistor between the Trim Pin (pin 4) and

Ground (pin 6). This resistor value (in kΩ) is given by:

LR5003W-xx

21.07

- 5.11

LR5012W-xx

10.5

- 1.0

Output Voltage

LR5003W-xx LR5012W-xx

0.75 VDC

Open

Open

1.00 VDC

80.021 kΩ

41.424 kΩ

1.20 VDC

41.973 kΩ

22.460 kΩ

1.50 VDC

23.077 kΩ

13.050 kΩ

1.80 VDC

15.004 kΩ

9.024 kΩ

2.00 VDC

11.779 kΩ

7.416 kΩ

2.50 VDC

6.947 kΩ

5.009 kΩ

3.30 VDC

3.160 kΩ

3.122 kΩ

5.00 VDC

---

1.472 kΩ

4. The Control input (pin 11) uses TTL compatible logic as follows:

Unit

Control Pin

ON

OFF

Grnd or < 0.4V

Model Selection Guide

Notes:

Mechanical Dimensions

Pin

Function

1Vin

2

Control

3

Sense

4

Trim

5

Vout

6

Gnd

Pin Connections

Derating Curve

Notes:

MicroPower Direct

www.micropowerdirect.com

292 Page Street Ste D Stoughton, MA 02072

•

TEL: (781) 344-8226

•

FAX: (781) 344-8481

•

E-Mail: sales@micropowerdirect.com

Typical Connection Diagram