Datasheet > UM3500

UM3500

更新时间： 2024-11-26 06:01:07

品牌	Logo	应用领域
其他 - ETC		转换器
页数	文件大小	规格书
2页	97K
描述
40 Watts DC-DC Converters

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中文翻译

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数据手册

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UM3500 数据手册

Mespek Oy, PL103, 00701 Helsinki

Puh. (09)3507360 Fax (09)3453384

E-mail: mespek@mespek.com

http://www.mespek.com

UM3500 SERIES

40 Watts DC-DC Converters

¨ Synchronous-Rectifier Topology

¨ Remote On/Off Control

¨ Continuous Short Circuit Protection

¨ High Efficiency

¨ Non-Isolated

¨ Current Share Function

SPECIFICATIONS

NOTES:

All specifications are typical at nominal line, full load and

25°C unless otherwise noted.

1. Measure from high line to low line.

2. Measure from full load to 1/2 load.

3. Measured with 1uF ceramic cap. Connected to the

output pins.

4. Output Power

100%

INPUT SPECIFICATIONS

Input Voltage Range, 5V ……………..…………… 4.75-5.5V

12V ……………….………… 10.4-13.6V

Input Filter ………………………………..………... Capacitive

Operating

Temperature

-25

100

(°C)

OUTPUT SPECIFICATIONS

Maximum case temperature must not be exceeded100°C.

Voltage Accuracy .……………………………….… ± 2% max.

Transient Response(25% Step Load Change) ….. <500μS

Line Regulation¹…..…………………………….. ±0.5% max.

Load Regulation²……………………………..…. ±0.7% max.

Ripple and Noise, 20MHz BW³………….… 75mV P-P max.

Temperature Coefficient ……………….…±0.02%/°C max.

Short Circuit Protection .…………………..…… Continuous

Automatic Recovery

5. UM3500 series can be used as parallel connection to

provide current share function. The current that each

converter delivers will thus be 1/N of the total current, if

there are N total converters in parallel. Limitations to this

scheme are dependent primarily on matching of the

resistances in the converter: mismatch in resistance

results in one converter delivering more current than

another. When using this current share function, Pin

1(SYNC) and Pin 3(PWM) must be connected to each

other or be floating if used as single unit.

GENERAL SPECIFICATIONS

Efficiency .……………………………………..….… See Table

Switching Frequency …..……………………….. 200KHz typ.

Operating Temperature Range⁴….…….… -25°C to +100°C

Storage Temperature ....….………………… -40°C to+105°C

Cooling …………………………..……… Free Air Convection

Dimensions …………………….………..… 2 x 1 x 0.4 inches

(50.8 x 25.4 x 10.2mm)

REMOTE ON/OFF CONTROL

Logic Compatibility…………….CMOS or Open Collector TTL

Converter ON.………….…………>+2.5 VDC or Open Circuit

Converter OFF…………………….<+0.8 VDC or Short Circuit

Control Common……………..…….Referenced to Input Minus

Case Material ………..………… Black-Coated Copper with

Non-Conductive Base

3,27TH RD., TAICHUNG INDUSTRIAL PARK,

TAICHUNG, TAIWAN, R.O.C.

UNIVERSAL

TEL: 886-4-23590096 FAX:886-4-23590129

MICROELECTRONICS

UM3500

REV.1

中文翻译

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