Key Features:

LSR7805

Low Cost, Miniature

500 mA Surface Mount

POL Switching Regulators

Output

Parameter

Conditions

Min.

Typ.

Max.

Units

Output Voltage Accuracy

±2.0

±3.0

%

Output Voltage Adjustment Range

Contact Factory For Information

Line Regulation

Vin = Min to Max

±0.2

±0.5

%

Load Regulation

Iout = 10% to 100%

±0.3

±0.75

%

Ripple & Noise (20 MHz)

10

25

mV P - P

Thermal Shutdown

See Note 2

160

°C

Quiescent Current, Note 3

15

mA

Temperature Coefficient

0.02

%/°C

Maximum Capacitive Load

1,000

µF

Output Current Limit

1.8

A

Short Circuit Input Power

0.5

1.8

W

Output Short Circuit

Continuous (Autorecovery)

General

Parameter

Conditions

Min.

Typ.

Max.

Units

Isolation Voltage

Not Isolated

Switching Frequency

410

kHz

Environmental

Parameter

Conditions

Min.

Typ.

Max.

Units

Operating Temperature Range

Ambient

-40

+25

+85

°C

Operating Temperature Range

Case

+100

°C

Storage Temperature Range

-55

+125

°C

Lead Temperature

1.5 mm From Case For 10 Sec

300

°C

Cooling

Free Air Convection

Humidity

RH, Non-condensing

95

%

Physical

Case Size

0.60 x 0.476 x 0.285 Inches (15.24 x 12.10 x 7.25 mm)

Case Material

Non-Conductive Black Plastic (UL-94V0)

Weight

0.08 Oz (2.3g)

Reliability Specifications

Parameter

Conditions

Min.

Typ.

Max.

Units

MTBF

MIL HDBK 217F, 25°C, Gnd Benign

2.0

MHours

Series

MicroPower Direct

292 Page Street

Suite D

Stoughton, MA 02072

USA

T: (781) 344-8226

F: (781) 344-8481

E: sales@micropowerdirect.com

W: www.micropowerdirect.com

Notes:

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.

2. C1 & C2 are required and should be mounted as close to

the regulator pins as possible. C3 is required for optimum

performance, use 100 µF OR more.

3. R1 & R2 are used to adjust the regulator output. For sug-

gested values, please contact the factory.

Model

Number

Ceramic Capacitors

LSR7805-03W

10 µF/50V

22 µF/ 16V

LSR7805-05W

10 µF/50V

22 µF/ 16V

LSR7805-09W

10 µF/50V

22 µF/ 16V

LSR7805-12W

10 µF/50V

10 µF/ 25V

LSR7805-15W

10 µF/50V

10 µF/ 25V

Component Values

Electrical Specifications

Specifications typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice.

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Typical Application Circuits