LC020A

LC020A Datasheet


LC020 Single-Output Series Power Module 18 Vdc to 36 Vdc Inputs 20 W

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Data Sheet April 2008

LC020 Single-Output Series Power Module 18 Vdc to 36 Vdc Inputs 20 W

The LC020 Single-Output Series Power Modules use advanced, surface-mount technology and deliver high-quality, compact, dc-dc conversion at an economical price.
n Distributed Power Architectures n Telecommunications n Data Networking n Wireless
n Low profile mm in. with standoffs, mm in. with standoffs recessed
n Wide input voltage range 18 Vdc to 36 Vdc n Input-to-output isolation 850 V n Operating ambient temperature range °C to
+100 °C n Output overcurrent protection, unlimited duration n Remote on/off logic n Output voltage adjust 90% to 110% of VO, nom n UL* 60950 Recognized, CSA† C22.2 No. 60950-00

Certified, 0805 IEC60950 Licensed n Within FCC Class A radiated limits

Options
n Choice of remote on/off logic configuration n Case ground pin n Synchronization n Short pin mm ± mm
in. ± in.

The LC020 Single-Output Series Power Modules are low-profile, dc-dc converters that operate over an input voltage range of 18 Vdc to 36 Vdc and provide a precisely regulated V, 5 V, 12 V, or 15 V output. The output is isolated from the input, allowing versatile polarity configurations and grounding connections. The modules have a maximum power rating of 20 W at a typical full-load efficiency of up to

The power module features remote on/off and output voltage adjustment of 90% to 110% of the nominal output voltage. Built-in filtering for both input and output minimizes the need for external filtering.
* UL is a registered trademark of Underwriters Laboratories, Inc. †CSA is a registered trademark of Canadian Standards Association. is a trademark of Verband Deutscher Elektrotechniker e.V.

LC020 Single-Output Series Power Module 18 Vdc to 36 Vdc Inputs 20 W

Data Sheet April 2008

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.

Parameter

Input Voltage Continuous 100 ms Transient

Operating Case Temperature See Thermal considerations section.

Storage Temperature

I/O Isolation Voltage

VI, trans

Tstg
40 50 100
120 850

Unit

Vdc V °C
°C Vdc

Electrical Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.

Table Input Specifications

Parameter

Symbol Min

Unit

Operating Input Voltage

Maximum Input Current

II, max

VI = 0 V to VI, max IO = IO, max see Figures

Inrush Transient
Note that the view in Figure 20 is of the metal surface of the pin locations shown are for reference. The temperature at this location should not exceed 100 °C. The output power of the module should not exceed the rated power for the module as listed in the Ordering Information table.

Heat Transfer Without Heat Sinks

Increasing airflow over the module enhances the heat transfer via convection. Figure 21 shows the maximum power that can be dissipated by the module without exceeding the maximum case temperature versus local ambient temperature TA for natural convection through 600 ft./min. .

Note that the natural convection condition was measured at 10 ft./min. to 20 ft./min. however, systems in which these power modules may be used typically generate natural convection airflow rates of 60 ft./min. due to other heat dissipating components in the system. Use of Figure 21 is shown in the following example.

Example

What is the minimum airflow necessary for an LC020A operating at high line, an output current of A, and a maximum ambient temperature of 83 °C?

Lineage Power

LC020 Single-Output Series Power Module 18 Vdc to 36 Vdc Inputs 20 W

Data Sheet April 2008

Thermal Considerations continued

Heat Transfer Without Heat Sinks continued

Solution Given VI = 36 V, IO = A, TA = 83 °C Determine PD Figure 23 PD = W Determine Airflow Figure 21 v = 200 ft./min.

POWER DISSIPATION, PD W
ms-1 600 ft./min. ms-1 400 ft./min.
ms-1 200 ft./min.
ms-1 100 ft./min.

NATURAL

CONVECTION
0 30 40 50 60 70 80 90 100

AMBIENT TEMPERATURE, T A
8-1264

Figure Forced Convection Power Derating with No Heat Sink Either Orientation

POWER DISSIPATION, PD W
7 VIN = 18 V
5 VI = 36 V VI = 28 V
4 VI = 18 V

OUTPUT CURRENT, IO A
8-1371

Figure LC020A Power Dissipation vs. Output Current, TA = 25 °C

POWER DISSIPATION, PD W

VI = 36 V

VI = 27 V

VI = 18 V

OUTPUT CURRENT, IO A
1-0338

POWER DISSIPATION, PD W

VI = 36 V

VI = 27 V

VI = 18 V

OUTPUT CURRENT, IO A
1-0337
Ordering Information

Input Voltage 28 V 28 V 28 V 28 V

Output Voltage V 5V 12 V 15 V

Output Power W 20 W 20 W 20 W

Device Code LC020F LC020A LC020B LC020C

Comcode 107681025 107640815 107681009 107681017

Optional features may be ordered using the device code suffixes shown. To order more than one option, list suffixes in numerically descending order.

Please contact your Lineage Power Account Manager or Field Application Engineer for pricing and availability.

Option Short pin mm ± mm in. ± in.

Case ground pin Synchronization Negative logic on/off

Device Code Suffix 8 7 3 1

Lineage Power

LC020 Single-Output Series Power Module 18 Vdc to 36 Vdc Inputs 20 W

Data Sheet April 2008

A sia-Pacific Head qu art ers T el +65 6 41 6 4283

World W ide Headq u arters Lin eag e Po wer Co rp oratio n 30 00 Skyline D riv e, Mesquite, T X 75149, U SA +1-800-526-7819 Outsid e U .S.A +1- 97 2-2 84 -2626 ag ep ower.co m e-m ail tech sup lin ea gep ower.co m

Eu ro pe, M id dle-East an d Afric a He ad qu arters T el +49 8 9 6089 286

Ind ia Head qu arters T el +91 8 0 28411633

Lineage Power reserves the right to make changes to the produc t s or information contained herein without notice. No liability is ass umed as a res ult of their use or applic ation. No rights under any patent acc ompany the sale of any s uc h pr oduct s or information.
2008 Lineage Power Corpor ation, Mesquite, Texas All International Rights Res er ved.

April 2008 DS99-140EPS Replaces DS99-139EPS
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Datasheet ID: LC020A 645705