RSG A1212LT-2W Fixed input isolated & unregulated 2w dual output utralminiature smd package Datasheet

RSG
RSG Electronic Components GmbH Sprendlinger Landstr. 115 D-63069 Offenbach/Germany
Tel. +49 69 984047-0 Fax +49 69 984047-77 [email protected] www.rsg-electronic.de
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ELECTRONIC COMPONENTS
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Änderungen vorbehalten / subject to change without notice
A_LT-2W Series
FIXED INPUT ISOLATED & UNREGULATED
2W DUAL OUTPUT
UTRALMINIATURE SMD PACKAGE
Multi-country patent protection RoHS
FEATURES
● High Efficiency up to 85%
● High Power Density
● SMD Package Styles
● Small Footprint
● 1kVDC Isolation
● Temperature Range: -40°C -+85°C
● Industry Standard Pinout
● No Heatsink Required
● No External Component Required
● RoHS Compliance
PRODUCT PROGRAM
Part
Number
Input
Voltage (VDC)
Nominal
Range
Voltage
(VDC)
A0505LT-2W
A0509LT-2W
5
4.5~5.5
The A_LT-2W Series are specially
designed for applications where a
group of polar power supplies are
isolated from the input power supply
in a distributed power supply system
on a circuit board.
These products apply to:
1) Where the voltage of the input
power supply is fixed (voltage
variation ≤±10%);
2) Where isolation is necessary
between input and output
(isolation voltage =1000VDC);
3) Where the regulation of the
output voltage and the output
ripple noise are not demanding.
Such as: purely digital circuits,
ordinary low frequency analog
circuits, and IGBT power device
driving circuits.
Efficiency
(%, Typ)
Package
Style
±5
±200
±20
82
SMD
±9
±111
±11
83
SMD
A0512LT-2W
±12
±83
±8
84
SMD
A1205LT-2W
±5
±200
±20
83
SMD
±9
±111
±11
84
SMD
±12
±83
±8
84
SMD
±15
±67
±7
85
SMD
A1209LT-2W
A1212LT-2W
12
10.8~13.2
A1215LT-2W
APPLICATIONS
Output
Current (mA)
Max
Min
Note: The A_T-1W series also are available in our company.
COMMON SPECIFICATIONS
Short circuit protection
Temperature rise at full load
Cooling
Operating temperature range
Storage temperature range
Lead temperature
Storage humidity range
Case material
MTBF
1 second
25°C Max, 15°C Typ
Free air convection
-40°C~+85°C
-55°C ~+125°C
260°C (1.5mm from case for 10 seconds)
≤ 95%
Plastic (UL94-V0)
>3,500,000 hours
ISOLATION SPECIFICATIONS
Item
Isolation voltage
Isolation resistance
Test conditions
Tested for 1 minute and 1mA max
Test at 500VDC
Min
1000
1000
Typ
Max
Units
VDC
MΩ
Min
0.2
Typ
Max
2
1.2
Units
W
%
10% to 100% load (5V output)
10
15
10% to 100% load (9V output)
6.5
15
10% to 100% load (12V output)
6.0
15
10% to 100% load (15V output)
6.0
15
OUTPUT SPECIFICATIONS
MODEL SELECTION
A0505LT-2W
Rated Power
Package Style
Output Voltage
Input Voltage
Product Series
Item
Output power
Line regulation
Load regulation
Test conditions
For Vin change of 1%
Output voltage accuracy
%
See tolerance envelope graph
Temperature drift
100% full load
Output ripple
Noise
20MHz Bandwidth
20MHz Bandwidth
75
150
Switching frequency
Full load, nominal input
70
0.03
%/°C
150
250
mVp-p
kHz
Note:
1. All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load unless
otherwise specified.
2. See below recommended circuits for more details.
MORNSUN reserves the copyright
For any design change and upgrade, we will not make any prior notification
A/1-2007
Page 1 of 2
TYPICAL CHARACTERISTICS
Filtering
In some circuits which are sensitive to
noise and ripple, a filtering capacitor may
be added to the DC/DC output end and
input end to reduce the noise and ripple.
However, the capacitance of the output
filter capacitor must be proper. If the
capacitance is too big, a startup problem
might arise. For every channel of output,
provided the safe and reliable operation is
ensured, the greatest capacitance of its
filter capacitor sees the EXTERNAL
CAPACITOR TABLE. To get an extremely
low ripple, an “LC” filtering network may be
connected to the input and output ends of
the DC/DC converter, which may produce a
more significant filtering effect. It should
also be noted that the inductance and the
frequency of the “LC” filtering network
should be staggered with the DC/DC
frequency to avoid mutual interference
(Figure 1).
Ambient Temperature( C )
RECOMMENDED REFLOW SOLDERING PROFILE
Peak .Temp 260℃
10 Sec Max
250
220℃
Temperature (℃)
200
90 Sec Max
(>220℃)
150
100
L
L
Vin
50
GND
0
+Vo
C
DC DC
C
L
0V
-Vo
C
Time (sec. )
(Figure 1)
PIN CONNECTIONS
1
2
P in
Functio n GND Vin
3
NC
5
-Vo
6
0V
8
NC
7
+Vo
9
NC
10 12 13
- Vo NC NC
14
NC
0.25
(0.01)
0.2 5
(0.1± 0.004)
0 .6±0 .0 5
0.0 2±0 .0 02
2.54±0.1
(0.05)
(0.01)
0.50 (0.02)
10 9 8
12.7 (0.5)
( 0.7±0 .01)
(0.11)
(0.2 3)
(0.24)
1.27
14 1312
17.78±0. 25
The simplest device for output voltage
regulation, over-voltage and over-current
protection is a linear voltage regulator
with overheat protection that is connected
to the input or output end in series
(Figure2).
A
5.75
6.00
2.75
OUTLINE DIMENSIONS& RECONMENDED FOOTPRINT DETAILS
Output Voltage Regulation and
Over-voltage Protection Circuit
(Figure 2)
Overload Protection
。
5.00 MAX
1.30 ±0.13
1 2 3
5 6 7
15.24 (0.6)
17.78 (0.7)
(0. 05±0.005)
Note: All Pins on a 2.54mm(0.1) pitch; All Pin Widths are 0.60 mm(0.02);
Under normal operating conditions, the
output circuit of these products has no
protection against over-current and
short-circuits. The simplest method is to
connect a self-recovery fuse in series at the
input end or add a circuit breaker to the
circuit.
Tolerances:±0.15mm(0.006); Unit: mm(inch)
EXTERNAL CAPACITOR TABLE
APPLICATION NOTE
Requirement on output load
To ensure this module can operate efficiently and reliably, a minimum load is
specified for this kind of DC/DC converter in addition to a maximum load
(namely full load). During operation, make sure the specified range of input
voltage is not exceeded, the minimum output load is not less than 10% of the
full load, and that this product should never be operated under no load! If the
actual output power is very small, please connect a resistor with proper
resistance at the output end in parallel to increase the load, or use our
company’s products with a lower rated output power (A_T-1W series).
Vin
External
capacitor
Vout
External
capacitor
5VDC
4.7uF
5VDC
4.7uF
12VDC
2.2uF
9VDC
2.2uF
--
--
12VDC
1uF
15VDC
0.47uF
It’s not recommend to connect any
external capacitor in the application
field with less than 0.5 watt output。
MORNSUN reserves the copyright
RSG
For any design change and upgrade, we will not make any prior notification
■
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ELECTRONIC COMPONENTS
A/1-2007
Page 2 of 2
RSG Electronic Components GmbH Sprendlinger Landstr. 115 D-63069 Offenbach/Germany
Tel. +49 69 984047-0 Fax +49 69 984047-77 [email protected] www.rsg-electronic.de
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Änderungen vorbehalten / subject to change without notice
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