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參數(shù)資料
| 型號： | UNS-3.3/3-D5 |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 15 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | 2 X 0.800 INCH, 0.400 INCH HEIGHT, PACKAGE-10 |
| 文件頁數(shù)： | 1/5頁 |
| 文件大?。?/td> | 107K |
| 代理商： | UNS-3.3/3-D5 |
DATEL, Inc., Mansfield, MA 02048 (USA) Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 mail: sales@datel.com Internet: www.datel.com
Single Output
UNS Series
Non-Isolated, 3.3V and 5V
3 Amp, DC/DC Converters
Features
Figure 1. Simplified Schematic
+V
IN
+V
OUT
PWM
CONTROLLER
REFERENCE &
ERROR AMP
ON/OFF
CONTROL
TRIM
+V
IN
–V
IN
–V
IN
+V
OUT
OUTPUT
RETURN
OUTPUT
RETURN
Low cost, high efficiency, wide input voltage range and low output noise define
DATELs new UNS Series of non-isolated, step-down, switching DC/DC convert-
ers. The 3.3V- and 5V-output devices are, respectively, 90% and 92% efficient. All
models are fully line and load regulated and maintain specified accuracy over the
impressively wide input voltage ranges of 4.75 to 13.6 Volts for 3.3V outputs and 6
to 16.5 Volts for 5V outputs. Output ripple and noise are typically 50mVp-p.
UNS devices are fabricated using proven SMT-on-pcb construction techniques.
The 3.3V and 5V devices are both available in either lightweight SIP (2" x 0.4" x
0.8") or DIP (2" x 0.8" x 0.4", 600 mil spacing between rows) package configura-
tions. The DIP option is designated by a "D" suffix added to the part number. All
models are conformally coated for protection against moisture and dust.
The high efficiency of the UNS Series’ fixed-frequency (190kHz) switching
design eliminates the need for thermally conductive potting compound. Devices are
specified for full-power operation up to ambient temperatures of +50°C. With derat-
ing, they operate up to +70°C. Calculated MTBF (MIL-HDBK-217F) is more than 1.6
million hours.
These simple-to-use power converters have no minimum load requirements.
They draw 1mA when unloaded and a mere 100μA in the standby mode (On/Off
Control turned off). 3.3V models have an output voltage adjustment range of 2.7 to
3.3 Volts. 5V models are adjustable down to 3.0V.
INNOVATION and EX C ELL E N C E
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Low cost
SIP or DIP packaging
3.3V (10W) or 5V (15W) outputs
Wide range inputs:
4.75-13.6V for 3.3V models
6-16.5V for 5V models
High efficiencies, typically 90-92%
Low output noise, 50mVp-p
Remote on/off control
100μA "standby" input current
Output current limiting
EMC compliant
Highly reliable, 100% SMT construction
Conformally coated for harsh
environments
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