Datasheet > USN-3.3/8-D5

USN-3.3/8-D5

更新时间： 2024-10-14 23:40:47

品牌	Logo	应用领域
其他 - ETC		模拟IC
页数	文件大小	规格书
7页	116K
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Analog IC

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USN-3.3/8-D5 数据手册

INNOVATION and EXCELLENCE

Single Output

USN D5 Models

Non-Isolated, 5VIN, 1.5-3.3VOUT

8/10A DC/DC’s in SIP Packages

DATEL’s new USN D5 Series SIP’s (single-in-line packages) are non-isolated

DC/DC converters that accept a 5V input (4.5V to 5.5V input range) and deliver 1.5V,

1.8V, 2.5V or 3.3V outputs at either 8 or 10 Amps. USN D5 SIP’s are designed to take

on-board 5V power and convert it, with the highest efﬁciency in the smallest space, to

any lower voltage required by today’s current-hungry DSP’s, ASIC’s and CPLD’s.

USN’s are ideal for true point-of-use power processing. They occupy a mere

0.8 square inches of board space (2" length, 0.4" width, 0.53" height). Their fully

synchronous, ﬁxed-frequency (200kHz), buck topology delivers high efﬁciency (91%

for 3.3V^OUTmodels), tight regulation (±0.1%/±0.5% line/load), stable no-load opera-

tion, and low output noise (25mVp-p for 1.5/1.8V^OUTmodels).

Features

■

Industry-standard SIP pinout

■

Shorter (2.0" vs. 2.5") package length

4.5-5.5V input range

1.5/1.8/2.5/3.3V outputs @ 8 or 10 Amps

Non-isolated, fully synchronous,

200kHz, buck topology

■

Superior performance vs. competitors:

The fully functional USN’s feature input undervoltage shutdown, output overcur-

rent detection, continuous short-circuit protection, a wide-range output-voltage trim

function, a remote on/off control pin, and an optional sense pin.

USN’s are pin compatible with similar devices from Lucent/Tyco, Artesyn Tech-

nologies and Power-One. USN’s, however, deliver more current (10A vs. 6A), from

a smaller package (2.0" vs. 2.5" long), with better accuracy (±1% max.), tighter

regulation, less noise, and superior temperature performance. If a USN SIP is

operated at only 6 Amps, for example, it can reliably operate up to +65°C (with

100lfm air ﬂow).

If your low-voltage, high-current requirements have made the use of inefﬁcient

linear regulators impractical, take a look at one of DATEL’s easy-to-use, low-cost

USN SIP’s. All devices are UL1950/EN60950 certiﬁed and EMC compliant. UL, CB

and EMC reports are available upon request.

• 8/10 Amps vs. 6 Amps

•

1ꢀ setpoint accuracy

Efﬁciencies to 91ꢀ

Noise as low as 25mVp-p

Stable no-load operation

Wide-range trimmable output voltage

■

Remote on/off control; Optional sense pin

Power-good pin and "Lucent-compatible"

on/off control available

■

EN60950 and UL1950 certiﬁed

EMC compliant

+OUTPUT

+INPUT

■

+SENSE

(OPTIONAL)

COMMON

CURRENT

SENSE

10kΩ

ON/OFF

CONTROL

PWM

CONTROLLER

REFERENCE &

ERROR AMP

TRIM

■ For devices with the sense-pin option ("R" sufﬁx), the

feedback path is through the +Sense pin and not the

+Output pin.

Figure 1. Simpliﬁed Schematic

DATEL, Inc., Mansﬁeld, MA 02048 (USA)

· Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: sales@datel.com · Internet: www.datel.com

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