EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000

16

Input and Output Impedance

Both the source impedance of the power feeding and the load imped-

ance will interact with the impedance of the DC/DC power module.

It is most important to have the ratio between L and C as low as

possible, i.e. a low characteristic impedance, both at the input and

output, as the power modules have a low energy storage capability.

Use an electrolytic capacitor across the input or output if the source

or load inductance is larger than 10

ance together with the capacitance acts as a lossless damping filter.

Suitable capacitor values are in the range 10–100

Mounting information for PKZ 0001

The two holes on the ground pin are ovals for positioning of the pin

according to the PCB layout. The screws are delivered together with

the pin.

Warranty

Ericsson Microelectronics warrants to the original purchaser or end user

that the products conform to this Data Sheet and are free from

material and workmanship defects for a period of five (5) years from the

date of manufacture, if the product is used within specified conditions

and not opened. In case the product is discontinued, claims will be

accepted up to three (3) years from the date of the discontinuation.

For additional details on this limited warranty we refer to Ericsson

Microelectronics AB’s “General Terms and Conditions of Sales”, or

individual contract documents.

Limitation of Liability

Ericsson Microelectronics does not make any other warranties, ex-

pressed or implied including any warranty of merchantability or

fitness for a particular purpose (including, but not limited to, use in

life support applications, where malfunctions of product can cause

injury to a person’s health or life).

Reliability

Meantime between failure (MTBF) is calculated to >2.0 million hours

using the Ericsson failure rate data system. The Ericsson failure rate

data system is based on field failure rates and is continuously updated.

The data corresponds to actual failure rates of component used in Infor-

mation Technology and Telecom equipment in temperature controlled

confidence level of 90%. For more information see Design Note 002.

Quality Statement

The products are designed and manufactured in an industrial environ-

ment where quality systems and methods like ISO 9000, 6s and SPC,

are intensively in use to boost the continuous improvements strategy.

Infant mortality or early failures in the products are screened out by a

burn-in procedure and an ATE-based final test.

Conservative design rules, design reviews and product qualifications,

plus the high competence of an engaged work force, contribute to the

high quality of our products.

Quality

Mounting surface must be flat within 0.2 mm. All specifications are

Accessories

Mounting information for PKZ 0004

PKZ 0001

PKZ 0004

PI version of ground pin for case, in packages of

10 pcs incl. mounting screws.

Mounting bracket for Off-Card mounting in packages

of 2 pcs.

Information given in this data sheet is believed to be accurate and reliable. No respon-

sibility is assumed for the consequences of its use nor for any infringement

of patents or other rights of third parties which may result from its use.

No license is granted by implication or otherwise under any patent or patent rights of

Ericsson Microelectronics. These products are sold only according to Ericsson

Microelectronics’ general conditions of sale, unless otherwise confirmed in writing.

Specifications subject to change without notice.