®

LSN2 Series

Non-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters

www.cd4power.com

ORDERING GUIDE SUMMARY

Model

Ripple/Noise

Efficiency

LSN2-T/6-W3

0.75-3.3V

0-6A

2.4-5.5V

15mVp-p

94%

LSN2-T/6-D12

0.75-5V

0-6A

8.3-14V

15mVp-p

95%

LSN2-T/10-W3

0.75-3.3V

0-10A

2.4-5.5V

15mVp-p

95%

LSN2-T/10-D12

0.75-5V

0-10A

8.3-14V

30mVp-p

95%

LSN2-T/16-W3

0.75-3.3V

0-16A

2.4-5.5V

25mVp-p

95%

LSN2-T/16-D12

0.75-5V

0-16A

8.3-14V

30mVp-p

94%

MECHANICAL CHARACTERISTICS

6 Amp output models

0.50 x 1.00 x 0.275 inches (12.7 x 25.4 x 6.98 mm)

10 & 16 Amp models

0.50 x 2.00 x 0.32 inches (12.7 x 50.8 x 8.13 mm)

INPUT CHARACTERISTICS

Parameter

Typ. @ 25°C, full load

Notes

Voltage Range

2.4-5.5 or 8.3-14V

5V or 12V nominal models

Current, full power

4.22 to 11.12A

Model dependent

Undervoltage Shutdown

Included

With autorestart hysteresis

Short Circuit Current

60mA

Output is short circuited

Remote On/Off Control

Positive or negative polarity

Default polarity is positive

OUTPUT CHARACTERISTICS

Parameter

Typ. @ 25°C, full load

Notes

Voltage

0.75-3.3 or 0.75-5V

User adjustable, model dependent

Current

0-6, 0-10 or 0-16A

Three ranges, model dependent

Power Dissipation

20, 33, 52W max.

Three values, model dependent

Accuracy

50% load

Ripple & Noise

15-75mVpp

Model dependent

Line and Load Regulation

±0.03%

Overcurrent Protection

Hiccup autorecovery

Continuous short circuit protection

Overtemperature Protection

+115°C shutdown

Efficiency (minimum)

92-93%

Model dependent

Efficiency (typical)

94-95%

Model dependent

GENERAL SPECIFICATIONS

Parameter

Typ. @ 25°C, full load

Notes

Transient Response

25μsec

50% load step to 2% of final value

Operating Temperature Range

–40 to +85°C

With 200 lfm airflow

Safety

UL/IEC/EN 60950

And CSA C22.2-No.234

EMI

FCC pt.15, class B

Pb

Lead-free

construction/attach

FEATURES

■

User-selectable outputs: 0.75-5V

(D12 models) or 0.75-3.3V (W3 models)

■

6, 10 or 16A maximum output current

■

Double lead free to RoHS standards

■

Selectable phased start-up sequencing

and tracking

■

■

Up to 52 Watts total output power

■

Very high efficiency up to 95%

■

Starts up into pre-biased load

■

DESCRIPTION

These miniature point-of-load (POL) switching

DC/DC converters are ideal regulation and supply

elements for distributed power and intermedi-

ate bus architectures. Fully compatible with

the Distributed-power Open Standards Alliance

specification (www.dosapower.com), LSN2’s can

power CPU’s, programmable logic and mixed-

voltage systems with little heat and low noise. A

typical application uses a master isolated 12 or

5Vdc supply and individual LSN2 converters for

local 1.8 and 3.3Vdc supplies. All system isolation

resides in the central supply, leaving lower cost

POL regulation at the load. The LSN2’s can deliver

very high power (to 52 Watts) in a tiny area with-

out heat sinking or external components. They

feature quick transient response (to 25μsec) and

very fast current slew rates (to 20A/μsec).