LSR7810 datasheet(2/2 Pages) MPD

2 / 2 page

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Notes:

1. Measured at an internal IC junction.

2. If the control pin (pin 10) is left open, the unit operates. If the

control pin is grounded, the unit is off.

3. This regulator is not designed to be used in parallel with another

unit to increase output power.

4. The input should not exceed the range given in the model

selection chart. Exceeding this limit could damage the unit.

5. If the output voltage is adjusted, the input/output relationship

must meet: VIN - VOUT = >2V. Attempting to operate below this

differential could damage the unit.

Model Selection Guide

Notes:

• All dimensions are typical in inches (mm)

• Tolerance x.xx = ±0.02 (±0.50)

• Pin 1 is marked by a “dot” or indentation on the side of the unit

Model

Number

Input

Output

Efﬁciency (%, Max)

Voltage (VDC)

Current

(mA)

Voltage (VDC)

Current

(A)

Min VIN

Max VIN

Nom.

Range

Nom.

Adj Range

LSR7810-015W

4.75 - 15.0

165

1.5

Fixed

1.0

LSR7810-018W

4.75 - 15.0

190

1.8

1.5 - 3.6

1.0

LSR7810-02W

5.0 - 18.0

245

2.5

1.5 - 3.9

1.0

LSR7810-03W

5.0 - 18.0

320

3.3

1.8 - 5.5

1.0

LSR7810-05W

7.0 - 18.0

460

5.0

2.5 - 6.5

1.0

LSR7810-06W

8.5 - 18.0

580

6.5

Fixed

1.0

Mechanical Dimensions

Pin Function

+VIN

Gnd

+VOUT

Gnd

VADJ

Control

Pin Connection

Solder Layout

Derating Curve

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The ﬁgure at above shows a typical connection of the LSR7810. Some notes on this connection are:

1. C1 & C2 are low ESR ceramic capacitors used to minimize noise at the regulator. A tantalum or low ESR

electrolytic capacitor may also be used. These capacitors are required and should be mounted as close

to the regulator pins as possible.

2. R1 & R2 are used to adjust the regulator output. If this is not required, the VADJ pin (pin 6) should be connected

to ground through 470 pF ceramic capacitor. For more information on adjusting the output, please contact

the factory.

3. A simple LC network may be used to improve the output ripple of the unit. This is illustrated by LOUT and COUT.

Typical Application Circuits

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