UNS-5/3-D12 [ETC]
Analog IC ; 模拟IC\n
| 型号： | UNS-5/3-D12 |
| 厂家： | 
ETC |
| 描述： | Analog IC
|
| 文件： | 总5页 (文件大小：125K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
®
INNOVATION and EXCELLENCE
Single Output
UNS S e rie s
Non-Isolated, 3.3V and 5V
3 Amp, DC/DC Converters
Low cost, high efficiency, wide input voltage range and low output noise define
DATEL’s new UNS Series of non-isolated, step-down, switching DC/DC converters.
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
derating, they operate up to +70°C. Calculated MTBF (MIL-HDBK-217F) is more
than 1.6 million hours.
Features
ꢀ
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
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.
Highly reliable, 100% SMT construction
Conformally coated for harsh
environments
+VOUT
+VOUT
TRIM
+VIN
+VIN
–VIN
–VIN
OUTPUT
RETURN
OUTPUT
RETURN
PWM
CONTROLLER
ON/OFF
CONTROL
REFERENCE &
ERROR AMP
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
This Material Copyrighted by Its Respective Manufacturer
U N S S e r ie s
N O N - I S O L A T E D , 1 0 a n d 1 5 W , S I N G L E O U T P U T D C / D C C O N V E R T E R S
ꢀ
Performance Specifications and Ordering Guide
Output
Input
Package
(Case,
Pinout)
R/N (mVp-p)
Regulation (Max.)
Efficiency
IIN
(mA)
ꢀ
IOUT
VIN Nom.
(Volts)
Range
(Volts)
VOUT
Min.
Typ.
(Volts)
(Amps)
Typ.
Max.
Line
Load
Model
UNS-3.3/3-D5
UNS-3.3/3-D5D
UNS-5/3-D12
UNS-5/3-D12D
3.3
3.3
5
3
3
3
3
50
50
50
50
100
100
100
100
±1.0%
±1.0%
±1.0%
±1.0%
±3.0%
±3.0%
±3.0%
±3.0%
7.5
7.5
12
4.75-13.6
4.75-13.6
6-16.5
1/1400
1/1400
1/1330
1/1330
--
--
--
--
90%
90%
92%
92%
B1, P18
B2, P18
B1, P18
B2, P18
5
12
6-16.5
ꢀ
ꢀ
ꢀ
Typical at TA = +25°C under nominal line voltage and full-load conditions, unless otherwise noted.
"D" suffix indicates DIP package.
Ripple/Noise (R/N) measured over a 20MHz bandwidth with a 100µF external input capacitor and a
220µF external output capacitor. Additional ouput capacitors will lower R/N. See Technical Notes.
Listed output regulation specifications describe the total change in output voltage as the input (line)
voltage or output (load) current is varied over its full specified range. Typically, line regulation is
ꢀ
ꢀ
better than ±0.5% and load regulation is better than ±1.0%. Load regulation applies for 0 to 100% load conditions.
Nominal line voltage, no-load/full-load conditions.
P A R T N U M B E R S T R U C T U R E
M E C H A N I C A L S P E C I F I C A T I O N S
Case B1 (SIP)
U NS - 3.3 / 3 - D5 D
0.03
(0.8)
1.97
(50.00)
0.28
(7.0)
Output Configuration:
U = Unipolar
Add "D" suffix for optional
DIP package configuration
Input Voltage Range:
D5 = 4.75-13.6 Volts (7.5V nominal)
D12 = 6-16.5 Volts (12V nominal)
Non-Isolated
SIP packaging
0.81
(20.50)
1 2
3
4 5
6 7 8 9 10
Nominal Output Voltage:
3.3 or 5 Volts
0.30
(7.62)
Maximum Output Current
in Amps
0.025
(0.64)
0.1
0.13
(2.5)
(3.41)
0.400
(10.16)
0.400
(10.16)
0.900
(22.86)
0.07
(1.85)
4 EQ. SP. @
0.100 (2.54)
4 EQ. SP. @
0.100 (2.54)
T E M P E R A T U R E D E R A T I N G
Case B2 (DIP)
0.03
(0.8)
20
18
0.28
(7.0)
1.97
(50.00)
0.025
(0.64)
16
UNS-5/3-D12
*
*
0.81
(20.50)
0.60
(15.24)
14
12
1 2
3
4 5
6 7 8 9 10
UNS-3.3/3-D5
0.13
10
0.10
(2.63)
(3.41)
0.400
(10.16)
0.400
(10.16)
0.900
(22.86)
8
6
4
2
0
0.14
(3.5)
STANDOFF
4 EQ. SP. @
0.100 (2.54)
4 EQ. SP. @
0.100 (2.54)
0.40
(10.16)
* NO CONNECTION. FOR MECHANICAL STABILITY ONLY.
I/O Connections
Function P18
+Input
Function P18
Pin
1
Pin
6
–10
0
10
20
30
40
50
60
70
80
90
100
Trim
Ambient Temperature (°C)
+Input
OutputRtn.
OutputRtn.
+Output
2
7
–Input
3
8
Note: Derating curves apply to both SIP and DIP package configurations
–Input
4
9
On/OffControl
+Output
5
10
2
This Material Copyrighted by Its Respective Manufacturer
U N S S e r ie s
N O N - I S O L A T E D , 1 0 a n d 1 5 W , S I N G L E O U T P U T D C / D C C O N V E R T E R S
Typical @ TA = +25°C under nominal line voltage and full-load conditions, unless noted.
ꢀ
Absolute Maximum Ratings
Input
Input Voltage Range:
"D5" and "D5D" Models
"D12" and "D12D" Models
Input Voltage:
"D5" Models
"D12" Models
4.75-13.6 Volts (7.5V nominal)
6-16.5 Volts (12V nominal)
15 Volts
18 Volts
Input Current
See Ordering Guide
Capacitive
None
Input Reverse-Polarity Protection
Output Overvoltage Protection
Output Current
None. See Technical Notes.
Input Filter Type
None
Current limited. Devices can
withstand an output short circuit
for brief durations only.
Overvoltage Protection
Reverse-Polarity Protection
None
On/Off Control (Pin 5)
ꢀ
TTL high (or open) = on, low = off
Output
Storage Temperature
–25 to +85°C
+300°C
Lead Temperature (soldering, 10 sec.)
VOUT Accuracy
±5%, maximum
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 Table is not implied.
Temperature Coefficient
±0.01% per °C
Ripple/Noise (20MHz bandwidth)
ꢀ
See Ordering Guide
See Ordering Guide
See Ordering Guide
Auto-recovery
Line/Load Regulation
Efficiency
ꢀ
Current Limiting
ꢀ
T E C H N I C A L N O T E S
Dynamic Characteristics
Transient Response (50% load step)
200µsec max. to ±2% of final value
190kHz
Input and Output Capacitors
Switching Frequency
Though UNS Series, non-isolated, DC/DC converters have on-board input
and output capacitors (CIN = 6.8µF, COUT = 6.8µF), the majority of applica-
tions will require the installation of additional external I/O capacitance.
Environmental
Operating Temperature:
Without Derating
–10 to +50°C
With Derating
to +70°C (See Derating Curve)
The total input capacitance functions as a true energy-storage element, and
its optimal value will vary as a function of line voltage. The selected external
input capacitor should have both low ESR and low ESL because, as the
power converter’s input FET switch cycles on and off, the input capacitance
must have the ability to instantaneously supply pulses of relatively high
current.
Storage Temperature
–25 to +85°C
Physical
Dimensions: SIP Models
2 x 0.41 x 0.8" (50 x 10.3 x 21mm)
2 x 0.8 x 0.44" (50 x 21 x 11.3mm)
DIP Models
ꢀ
Shielding
None
Rather than install a large, expensive, on-board capacitor that addresses all
possible input-voltage and output-load conditions, DATEL has chosen to
leave out the bulk of the input capacitance so that users may select a cost-
effective component appropriate to their own application. We use a low-ESR
100µF external input capacitor during production testing and have found
330µF to be a conservative value that works well in the majority of applica-
tions.
Case Connection
Pin Material
Weight
None
Gold-plated phosphor bronze
0.35 ounces (10 grams)
ꢀ
UNS Series devices require external input/output capacitors to achieve rated performance.
Listed specifications assume CIN = 100µF and COUT = 220µF.
See Technical Notes.
Output Ripple/Noise can be reduced with external capacitors. See Technical Notes.
UNS Series converters have no minimum-load requirements.
Current limiting initiates at approximately 5% above rated load.
DIP models have a standoff which makes their total above-board height 0.44 inches.
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
In addition to their on-board output capacitor, UNS Series devices require the
installation of additional output capacitors to achieve rated ripple/noise
specifications. External output capacitors should be low-ESR tantalum or
electrolytic types, and they should be located as close to the converters as
possible. A minimum of 220µF is required to achieve rated ripple/noise
specs. Increased capacitance will lower output noise. There are no limitations
on output capacitance; however, we have found minimal noise improvements
beyond 4700µF.
3
This Material Copyrighted by Its Respective Manufacturer
U N S S e r ie s
N O N - I S O L A T E D , 1 0 a n d 1 5 W , S I N G L E O U T P U T D C / D C C O N V E R T E R S
The On/Off Control Pin
Output Trimming
For normal operation, pin 5 should be left open. This pin has an internal
250k pull-up resistor to +5V (or to +VIN if +VIN < 5V). For dynamic control of
5V devices can be trimmed down to 3.0V, and 3.3V devices can be trimmed
down to 2.7V using a single external trimpot or fixed resistor. The trimpot
should be connected between +VOUT (pins 9 and 10) and Trim (pin 6) as
shown in the figure below. The trimpot can be used to determine the value of
a single fixed resistor which can then be connected between pins 9 and 10
and 6. Fixed resistors should be metal-film types with relatively low absolute
TCR’s to ensure stability.
W
the converters’ on/off functionality, a TTL logic high (+2.4V minimum, +5V
maximum or +VIN maximum if +VIN < 5V, 100µA max.) applied to pin 5
enables the converter, and a quasi-TTL logic low (0 to +0.5V, 100µA max.)
disables the converter. Control voltages should be referenced to pins 3 and 4
(–Input). For best results, use a mechanical relay or open-collector logic.
When the converter is turned off, its input "standby" current will be approxi-
mately 100µA. Applying a voltage that is greater than VIN to the On/Off
Control pin, or applying any voltage to this pin when no input power is
applied to the converter, may cause permanent damage to the converter.
In order to maximize their efficiency, UNS devices employ high-value
resistors in their voltage feedback loop. Consequently, the external trimpots
must also be high-resistance devices (1-2 megohms). If the trimpots are
accidentally turned to their 0W stops, it will not damage the converters;
however, the output voltage will be pulled down to an unstable level. Use care
not to trim the output voltage below the levels indicated in the accompanying
table.
T Y P I C A L P E R F O R M A N C E C U R V E S
100
98
96
94
92
+OUTPUT
9, 10
R1
ERROR
AMP
RTRIM
6
RLOAD
VIN = 6V
90
88
86
84
TRIM
R3
VIN = 12V
R2
1.195V
VIN = 16.5V
7, 8
OUTPUT
RETURN
0
0.5
1.0
1.5
2.0
2.5
3.0
5V Output Current (Amps)
Figure 2. Output Voltage Trimming
Efficiency vs. Output Current and Input Voltage (Model UNS-5/3)
100
Product
UNS-3.3/3
UNS-5/3
V
IN = 4.75V
98
96
94
92
90
88
86
84
Output Voltage
Adjustment Range
2.7 to 3.3V
3.0 to 5.0V
R1
68.68kW
124.7kW
R2
38kW
39kW
R3
10kW
10kW
V
IN = 7.5V
RTRIM
³160kW
³100kW
V
IN = 13.6V
Table 1. Output Voltage Trim Values
0
0.5
1.0
1.5
2.0
2.5
3.0
3.3V Output Current (Amps)
Efficiency vs. Output Current and Input Voltage (Model UNS-3.3/3)
®
®
INNOVATION and EXCELLENCE
ISO-9001 REGISTERED
DATEL (UK) LTD. Tadley, England Tel: (01256)-880444
DS-0406
9/98
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
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
Internet: www.datel.com
Email: sales@datel.com
Data Sheet Fax Back: (508) 261-2857
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.
This Material Copyrighted by Its Respective Manufacturer
®
®
INN OVATIO N and E XCELLENCE
NON-ISOLATED DC/DC CONVERTER SELECTION GUIDE
ON SOLATED
ONVERTER ELECTION
UIDE
S I N G L E O U T P U T, N O N - I S O L A T E D
2 .5 V
Output
Package ➀
Regulation
Input Voltage,
Ripple/
Current
(Amps, Max.)
Nominal (Range)
(Volts)
Dimensions
(Inches)
Case,
Pinout
Line
(Max.)
Load
(Max.)
Noise ➁ Efficiency
DATEL
Model Number
Data Sheet @
www.datel.com
(mVp-p)
(Min.)
2
8
5 (4.75-5.5)
5 (4.75-5.5)
12 (10.4-13.6)
5 (4.75-5.5)
12 (10.4-13.6)
5 (4.75-5.5)
5 (4.5-5.5)
1 x 1 x 0.45
2 x 1 x 0.39
2 x 1 x 0.48
2 x 1 x 0.39
2 x 1 x 0.48
2 x 1 x 0.44
2 x 2 x 0.49
C7A, P9
C5A, P9
C5C, P9
C5A, P9
C5C, P9
C5B, P9
C21, P26
±0.25%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.5%
±0.5%
±0.6%
±0.5%
±0.6%
±0.5%
±1.0%
30
40
40
40
40
40
60
83%
86%
85%
85%
83%
84%
85%
UNR-2.5/2-D5
UNR-2.5/8-D5
UNR, 5W
UNR, 20/25W
UNR, 20/25W
UNR, 20/25W
UNR, 20/25W
UNR, 30W
UNR-2.5/8-D12
UNR-2.5/10-D5
UNR-2.5/10-D12
UNR-2.5/12-D5
UNR-2.5/20-D5 ➂
1 0
1 2
2 0
Contact DATEL
S I N G L E O U T P U T, N O N - I S O L A T E D
3 .3 V
5 (4.75-5.5)
7.5 (4.75-13.6)
7.5 (4.75-13.6)
12 (10.4-13.6)
5 (4.75-5.5)
5 (4.75-5.5)
5 (4.75-5.5)
12 (10.4-13.6)
12 (10.4-13.6)
5 (4.75-5.5)
5 (4.75-5.5)
5 (4.75-5.5)
12 (10.4-13.6)
12 (10.4-13.6)
5 (4.75-5.5)
5 (4.5-5.5)
1 x 1 x 0.45
2 x 0.4 x 0.8 ➃
2 x 0.8 x 0.4 ➄
1 x 1 x 0.45
C7A, P9
±0.4%
±1.0%
±1.0%
±0.25%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.5%
±3.0%
±3.0%
±0.5%
±0.5%
±0.5%
±0.5%
±0.6%
±0.6%
±0.5%
±0.5%
±0.5%
±0.6%
±0.6%
±0.5%
±1.0%
30
50
50
100
40
40
40
60
60
40
40
40
60
60
40
50
86%
90% ➅
90% ➅
87%
88%
88%
88%
86%
86%
86%
86%
86%
85%
85%
87%
87%
UNR-3.3/3-D5
UNS-3.3/3-D5
UNR, 10W
UNS, 10/15W
UNS, 10/15W
UNR, 10W
B1, P18
3
B2, P18
UNS-3.3/3-D5D
C7A, P9
C5A, P9
C16A, P23
B3, P27
UNR-3.3/3-D12
2 x 1 x 0.39
UNR-3.3/8-D5
UNR, 26/33W
Contact DATEL
Contact DATEL
UNR, 26/33W
Contact DATEL
UNR, 26/33W
Contact DATEL
Contact DATEL
UNR, 26/33W
Contact DATEL
UNR, 40W
2 x 1 x 0.39
UNR-3.3/8-D5T ➂➇
USN-3.3/8-D5 ➂
UNR-3.3/8-D12
8
2 x 0.4 x 0.53 ➈
2 x 1 x 0.48
C5C, P9
C16C, P23
C5A, P9
C16A, P23
B3, P27
2 x 1 x 0.48
UNR-3.3/8-D12T ➂➇
UNR-3.3/10-D5
2 x 1 x 0.39
2 x 1 x 0.39
UNR-3.3/10-D5T ➂➇
USN-3.3/10-D5 ➂
UNR-3.3/10-D12
UNR-3.3/10-D12T ➂➇
UNR-3.3/12-D5
1 0
2 x 0.4 x 0.53 ➈
2 x 1 x 0.48
C5C, P9
C16C, P23
C5B, P9
C21, P26
2 x 1 x 0.48
1 2
2 0
2 x 1 x 0.44
2 x 2 x 0.49
UNR-3.3/20-D5 ➂
Contact DATEL
S I N G L E O U T P U T, N O N - I S O L A T E D
5 V
12 (6-16.5)
2 x 0.4 x 0.8 ➃
2 x 0.8 x 0.4 ➄
2 x 1 x 0.48
B1, P18
B2, P18
C13, P21
±1.0%
±1.0%
±0.25%
±3.0%
±3.0%
±0.5%
50
50
60
92% ➅
92% ➅
87%
UNS-5/3-D12
UNS-5/3-D12D
UNR-5/5-D12
UNS, 10/15W
UNS, 10/15W
UNR, 25W
3
12 (6-16.5)
5
➆
12 (10.4-13.6)
Listed specifications are typical at TA = +25°C under nominal line voltage and full-load conditions, unless noted.
➀
➁
➂
➃
➄
➅
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.
➆ Output voltage is user adjustable from 3.3 to 6V.
➇
➈
Output voltage is user adjustable from 1.4 to 3.6V.
Industry-standard, 11-pin SIP package.
Da t a s h e e t fa x b a c k : (5 0 8 )2 6 1 -2 8 5 7 • Vis it u s o n t h e in t e rn e t : w w w .d a t e l.c o m
DATEL, Inc., Mansfield, MA, USA • Tel: (508)339-3000, (800)233-2765 • Fax: (508)339-6356 • Email: sales@datel.com
Rev. C 6/99
This Material Copyrighted by Its Respective Manufacturer
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