WRN78XXT-1000 datasheet(2/5 Pages) MICRODC

Part #	WRN78XXT-1000

Description	WIDEINPUT,NON-ISOLATED®ULATED SMDPACKAGE SINGLEOUTPUT

PDF	5 Pages

Scroll/Zoom	100%

Manufacturer	MICRODC [Microdc power Technology Co., Ltd]

Direct Link	http://www.microdc.cn/

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2 / 5 page

WRN78XXT-1000

WRN78XXT-1000 Series

Series

http://www.microdc.cn

Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646

Page 2 of 5

TYPICAL

TYPICAL TEMPERATURE

TEMPERATURE

TEMPERATURE CURVE

CURVE

COMMON

COMMON SPECIFICATIONS

SPECIFICATIONS

Item

Test

Test Conditions

Conditions

Min.

Typ.

Max.

Units

Case Material

Plastic (UL94-V0)

MTBF

(MIL-HDBK-217F,+25℃)

1000

k hours

Hop swap

Not supported

Thermal resistance

90

℃/ W

Weight

2.3

g

ADJUSTMENT

ADJUSTMENT RESISTOR

RESISTOR

RESISTOR VALUES

VALUES

The R1, R2 in the above table are used to set the output voltage . If no need to adjust the output voltage, connect a ceramic capacitor to GND with 470pF typical value for increase

immunity. Insure the output voltage is in the adjust range or else may cause permanent damage to the device. Fine-tune output voltage must appease Vin-Vo>2V.

EMC

EMC SPECIFICATIONS

SPECIFICATIONS

CE

EN55022, CLASS A(without external circuit)

EN55022, CLASS B(refer to Figure 4)

RE

EN55022, CLASS A(refer to Figure 5)

ESD

IEC/EN61000-4-2

Air ±8KV / Contact ±6KV

perf. Criteria B

EFT

IEC/EN61000-4-4

±2KV

perf. Criteria B

Surge

IEC/EN61000-4-5

±2KV

perf. Criteria B(refer to Figure 4)

TYPICAL

TYPICAL APPLICATION

APPLICATION

APPLICATION CIRCUIT

CIRCUIT

1.

C1, C2 is required for best performance and should be fitted close to the converter pins.

2.

The capacitance of C1, C2 sees external capacitor table, it can be increased properly if required, and

tantalum or low ESR electrolytic capacitors may also suffice.

3. No parallel connection or plug and play.

RECOMMENDED

RECOMMENDED REFLOW

REFLOW

REFLOW SOLDERING

SOLDERING

SOLDERING PROFILE

PROFILE

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