Datasheet UNR-2.5-2-D5 Datasheet (DATEL)

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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
Single Output
UNR Series
Features
Figure 1. Simplified Schematic
Non-Isolated, 5V -to-2.5V
2 Amp, DC/DC Converters
As supply voltages trend lower, centralized power systems become more impractical. The accuracy , regulation and quick transient response demanded by today’s low-voltage, high-current CPU’s, DSP’s and ASIC’s make power processing at the "point of use" the only viable solution.
For your emerging 2.5V applications, DATEL’s new UNR-2.5/2-D5 is a true power-processing "component" that conveniently fits anywhere you need up to 5 Watts of low-noise (30mVp-p), rapidly responding (30µsec step response),
2.5V power. Its miniature 1" x 1" plastic package (UL94V-0 rated) requires absolutely no external filtering and can be "plugged in" right beside its load.
The impressively efficient (85%) UNR-2.5/2-D5 delivers its full rated 5W output power over the –40 to +70°C ambient temperature range without heat sinking or forced-air cooling. Devices are fully line (±0.25% max.) and load (±0.5% max.) regulated and feature user-optional remote on/off control. Units are able to withstand a sustained output short circuit and automatically recover to rated accuracy when the short is removed.
Because true low-voltage DC/DC’s are not yet widely available, you’re no doubt considering building your own or compromising with an inefficient, step­down, linear regulator. It’s time to take a look at one of DATEL’s "switchers." Their high efficiency, ease-of-use, and overall cost effectiveness will impress you. Safety agency approvals and full EMI characterizations are currently in progress. Contact DA TEL for the latest results.
Low cost! Complete! No external I/O capacitors required +4.75V to +5.5V input +2.5V (±1.5%), 2 Amp output Low output noise, 30mVp-p Quick transient response, 30µsec 200kHz switching frequency; 85% efficient 1" x 1" x 0.45", plug-in package Highly reliable, 100% SMT construction –40 to +70°C operation with no derating On/off control; EMC compliant IEC950/EN60950/UL1950 pending Modifications and customs for OEM’s
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+V
IN
+V
OUT
PWM
CONTROLLER
REFERENCE &
ERROR AMP
INPUT
RETURN
LOGIC
GROUND
ON/OFF
CONTROL
OUTPUT RETURN
CURRENT LIMITING & S.C. SHUTDOWN
INNOVATION and EX C ELL E N C E
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UNR Series
NON-ISOLATED, 5W, SINGLE OUTPUT DC/DC CONVERTERS
Input Voltage 7 Volts Input Reverse-Polarity Protection None Output Overvoltage Protection None Output Current Current limited. Devices can
withstand a sustained output short circuit without damage.
Storage Temperature 40 to +105°C Lead Temperature (soldering, 10 sec.) +300°C
These are stress ratings. Exposure of devices to any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications T able is not implied.
Absolute Maximum Ratings
DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.
DATEL (UK) LTD. Tadley, England Tel: (01256)-880444 DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01 DATEL GmbH München, Germany Tel: 89-544334-0 DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-354-2025
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 Internet: www.datel.com Email: sales@datel.com Data Sheet Fax Back: (508) 261-2857
DS-0414A 6/99
Return Current Paths
The Input Return (pin 5), Output Return (pin 4) and Logic Ground (pin 1) are all connected to each other internal to the device. To the extent possible, all load current should be returned through pin 4 (via low-impedance runs) and all input current returned through pin 5. Any control signals applied to pin 2 should be referenced to pin 1. The internal trace leading to pin 1 is not designed to carry high currents. Devices should never be installed in a manner that results in high current flow through pin 1 (i.e., pins 4 and 5 should never be left open or attached via high-impedance connections).
MECHANICAL SPECIFICATIONS
I/O Connections
Pin Function P9
1 Logic Ground 2 On/Off Control 3 +Output 4 Output Return 5 Input Return 6 +Input
ORDERING INFORMATION
UNR-2.5/2-D5 Non-Isolated, 5V-to-2.5V, 5 Watt, DC/DC Converter
INNOVATION and EX C ELL E N C
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®
Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage and full-load conditions, with no external I/O filtering, unless noted.
These power converters require a minimum 15% loading to maintain specified regulation. Operation under no-load conditions will not damage these devices; however they may not meet all listed specifications.
No-load/full-load conditions. When the converter is turned off, the input "standby" current is typically 10mA.
The On/Off Control pin can be driven with any logic circuit capable of meeting the following drive requirements. Logic "0" = 0 to +0.8V . Logic "1" = +2.0V to +5.0V. I
IH (@VIN = +5V) =
+2mA. I
IL (@VIN = 0V) = –5mA. Open-collector logic or a single NPN drive transistor can be
used. Applying a voltage to pin 2 when no input power is applied to the converter can cause permanent damage to the converter.
In critical applications, output noise may be further reduced by installing external capacitors across the output terminals. The caps should be located as close to the unit as possible and must be selected for low ESR (typically less than 60m
W
).
Current limiting initiates at approximately 30% above rated load. Under short-circuit conditions, output current folds back to approximately 150mA and remains there until the short is removed.
Input
Input Voltage Range 4.75-5.5 Volts (5V nominal) Input Current
40/1180mA
Input Filter Type Capacitive Overvoltage Protection None Reverse-Polarity Protection None On/Off Control (Pin 2)
TTL high (or open) = on, low = off
Output
VOUT Accuracy (50% load) ±1.5% (±37.5mV) maximum Temperature Coefficient ±0.02% per °C Ripple/Noise (20MHz BW)
30mVp-p typical, 50mVp-p maximum
Line/Load Regulation ±0.25% maximum/±0.5% maximum Efficiency 85% typical, 83% minimum Current Limiting
Auto-recovery
Dynamic Characteristics
Transient Response (50% load step) 30µsec to ±1% of final value Switching Frequency 200kHz (±30kHz)
Environmental
Operating Temperature (Ambient):
Without Derating –40 to +70°C With Derating to +100°C (Straight line to 0 Watts)
Storage Temperature 40 to +105°C
Physical
Dimensions 1" x 1" x 0.45" (25 x 25 x 11.4mm) Shielding None Case Material Diallyl phthalate, UL94V-0 rated Pin Material Brass, solder coated Weight 0.6 ounces (17 grams)
0.040 ±0.002 DIA. (1.016 ±0.051)
1.00
(25.40)
0.45
(11.43)
0.20 MIN. (5.08)
0.200
(5.08)
0.10
(2.54)
BOTTOM VIEW
3
1.00
(25.40)
0.800
(20.32)
0.100 (2.54)
1 2
4
6
0.800
(20.32)
0.200 (5.08)
0.400
(10.16)
5
0.10
(2.54)
STANDOFFS
0.020 (0.51)
PLASTIC CASE WITH AN INSULATED BASE
Case C7A
ISO-9001 REGISTERED
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INNOVATIO N and EX C ELL E N C E
® ®
DATEL, Inc., Mansfield, MA, USA • Tel: (508)339-3000, (800)233-2765 • Fax: (508)339-6356 • Email: sales@datel.com
Data sheet fax back: (508)261-2857 Visit us on the internet: www.datel.com
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12 (6-16.5) 2 x 0.4 x 0.8 B1, P18 ±1.0% ±3.0% 50 92% UNS-5/3-D12 UNS, 10/15W 12 (6-16.5) 2 x 0.8 x 0.4 B2, P18 ±1.0% ±3.0% 50 92% UNS-5/3-D12D UNS, 10/15W
5 12 (10.4-13.6) 2 x 1 x 0.48 C13, P21 ±0.25% ±0.5% 60 87% UNR-5/5-D12 UNR, 25W
Listed specifications are typical at TA = +25°C under nominal line voltage and full-load conditions, unless noted.
See individual product data sheets for mechanical specifications and pinouts.Ripple/Noise is specified over a 20MHz bandwidth.Listed specifications for these products are preliminary.10-pin SIP package.10-pin DIP package.Listed specification is a typical.Output voltage is user adjustable from 3.3 to 6V.Output voltage is user adjustable from 1.4 to 3.6V.Industry-standard, 11-pin SIP package.
NON-ISOLATED DC/DC CONVERTER SELECTION GUIDE
NON-ISOLATED DC/DC CONVERTER SELECTION GUIDE
Output Input Voltage, Ripple/
Current Nominal (Range) Dimensions Case, Line Load Noise Efficiency DATEL Data Sheet @
(Amps, Max.) (Volts) (Inches) Pinout (Max.) (Max.) (mVp-p) (Min.) Model Number www.datel.com
Package Regulation
2.5V
SINGLE OUTPUT, NON-ISOLATED
2.5V
SINGLE OUTPUT, NON-ISOLATED
Rev. C 6/99
5V
SINGLE OUTPUT, NON-ISOLATED
5V
SINGLE OUTPUT, NON-ISOLATED
2 5 (4.75-5.5) 1 x 1 x 0.45 C7A, P9 ±0.25% ±0.5% 30 83% UNR-2.5/2-D5 UNR, 5W
8
5 (4.75-5.5) 2 x 1 x 0.39 C5A, P9 ±0.1% ±0.5% 40 86% UNR-2.5/8-D5 UNR, 20/25W
12 (10.4-13.6) 2 x 1 x 0.48 C5C, P9 ±0.1% ±0.6% 40 85% UNR-2.5/8-D12 UNR, 20/25W
10
5 (4.75-5.5) 2 x 1 x 0.39 C5A, P9 ±0.1% ±0.5% 40 85% UNR-2.5/10-D5 UNR, 20/25W
12 (10.4-13.6) 2 x 1 x 0.48 C5C, P9 ±0.1% ±0.6% 40 83% UNR-2.5/10-D12 UNR, 20/25W
12 5 (4.75-5.5) 2 x 1 x 0.44 C5B, P9 ±0.1% ±0.5% 40 84% UNR-2.5/12-D5 UNR, 30W 20 5 (4.5-5.5) 2 x 2 x 0.49 C21, P26 ±0.1% ±1.0% 60 85% UNR-2.5/20-D5 Contact DATEL
5 (4.75-5.5) 1 x 1 x 0.45 C7A, P9 ±0.4% ±0.5% 30 86% UNR-3.3/3-D5 UNR, 10W
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7.5 (4.75-13.6) 2 x 0.4 x 0.8 B1, P18 ±1.0% ±3.0% 50 90% UNS-3.3/3-D5 UNS, 10/15W
7.5 (4.75-13.6) 2 x 0.8 x 0.4 B2, P18 ±1.0% ±3.0% 50 90% UNS-3.3/3-D5D UNS, 10/15W 12 (10.4-13.6) 1 x 1 x 0.45 C7A, P9 ±0.25% ±0.5% 100 87% UNR-3.3/3-D12 UNR, 10W
5 (4.75-5.5) 2 x 1 x 0.39 C5A, P9 ±0.1% ±0.5% 40 88% UNR-3.3/8-D5 UNR, 26/33W 5 (4.75-5.5) 2 x 1 x 0.39 C16A, P23 ±0.1% ±0.5% 40 88% UNR-3.3/8-D5T ➂ ➇ Contact DATEL
8 5 (4.75-5.5) 2 x 0.4 x 0.53 B3, P27 ±0.1% ±0.5% 40 88% USN-3.3/8-D5 Contact DATEL
12 (10.4-13.6) 2 x 1 x 0.48 C5C, P9 ±0.1% ±0.6% 60 86% UNR-3.3/8-D12 UNR, 26/33W 12 (10.4-13.6) 2 x 1 x 0.48 C16C, P23 ±0.1% ±0.6% 60 86% UNR-3.3/8-D12T ➂ ➇ Contact DATEL
5 (4.75-5.5) 2 x 1 x 0.39 C5A, P9 ±0.1% ±0.5% 40 86% UNR-3.3/10-D5 UNR, 26/33W 5 (4.75-5.5) 2 x 1 x 0.39 C16A, P23 ±0.1% ±0.5% 40 86% UNR-3.3/10-D5T ➂ ➇ Contact DATEL
10 5 (4.75-5.5) 2 x 0.4 x 0.53 B3, P27 ±0.1% ±0.5% 40 86% USN-3.3/10-D5 Contact DATEL
12 (10.4-13.6) 2 x 1 x 0.48 C5C, P9 ±0.1% ±0.6% 60 85% UNR-3.3/10-D12 UNR, 26/33W 12 (10.4-13.6) 2 x 1 x 0.48 C16C, P23 ±0.1% ±0.6% 60 85% UNR-3.3/10-D12T ➂ ➇ Contact DATEL
12 5 (4.75-5.5) 2 x 1 x 0.44 C5B, P9 ±0.1% ±0.5% 40 87% UNR-3.3/12-D5 UNR, 40W 20 5 (4.5-5.5) 2 x 2 x 0.49 C21, P26 ±0.1% ±1.0% 50 87% UNR-3.3/20-D5 Contact DATEL
3.3V
SINGLE OUTPUT, NON-ISOLATED
3.3V
SINGLE OUTPUT, NON-ISOLATED
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