QA2409XS [MICRODC]
0.25W, FIXED INPUT, ISOLATED&UNREGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER;
| 型号： | QA2409XS |
| 厂家： | 
MICRODC POWER TECHNOLOGY CO., LTD |
| 描述： | 0.25W, FIXED INPUT, ISOLATED&UNREGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER DC-DC转换器 输入元件 输出元件 |
| 文件： | 总2页 (文件大小：411K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
QA-XS&QB-XLS Series
0.25W, FIXED INPUT, ISOLATED&UNREGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER
PRODUCT PROGRAM
Input
Output
Current (mA)
Part
Efficiency
(%, Typ)
Voltage (VDC)
Voltage
(VDC)
Number
Nominal
Nominal
Max
75.8
50
QB0303XLS
QB0305XLS
QA0505XS
QA0509XS
QA0512XS
QA0515XS
QB0505XLS
QB0509XLS
QB0512XLS
QB0515XLS
QA1205XS
QA1209XS
QA1212XS
QA1215XS
QB1203XLS
QB1205XLS
QB1209XLS
QB1212XLS
QB1215XLS
QA2405XS
QA2409XS
QA2412XS
QA2415XS
QB2405XLS
QB2409XLS
QB2412XLS
QB2415XLS
QB2424XLS
3.3
5
62
65
62
64
66
65
64
65
67
65
62
63
64
65
62
65
66
67
66
63
64
65
65
63
63
65
65
64
3.3
3.0-3.6
FEATURES
±5
±9
±12
±15
5
±25
±13.8
±10.4
±8.3
50
◆Small Footprint
◆1KVDC Isolation
◆SIP Package
5
4.5-5.5
9
27.8
20.8
16.7
±25
±13.8
±10.4
±8.3
75.8
50
◆Internal SMD Construction
12
◆
Temperature Range: -40
℃to +85℃
15
◆No Heat sink Required
±5
±9
±12
±15
3.3
5
◆No External Component Required
◆Industry Standard Pin out
12
10.8-13.2
MODEL SELECTION
①
②
③
④
⑤
QB 05 05 X LS
9
27.8
20.8
16.7
±25
±13.8
±10.4
±8.3
50
①Product Series
③Output Voltage
⑤SIP-7 Package
②Input Voltage
④Fixed Input
12
15
±5
±9
±12
±15
5
APPLICATIONS
The QA-XS&QB-XLS 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.
24
21.6-26.4
9
27.8
20.8
16.7
10.4
12
15
These products apply to:
24
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.
COMMON SPECIFICATIONS
Item
Test conditions
Min
Typ
Max
95
Units
%
Storage humidity
Operating Temperature
Storage Temperature
Temp. rise at full load
Lead temperature
Short circuit protection*
Cooling
-40
-55
85
125
25
℃
15
1.5mm from case for 10 seconds
300
1
s
MICRODC RESERVES THE COPYRIGHT
Free air convection
Plastic (UL94-V0)
Case material
MTBF
3500
K hours
g
Weight
2.1
*Supply voltage must be discontinued at the end of short circuit duration.
http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 2
QA-XS&QB-XLS Series
ISOLATION SPECIFICATIONS
APPLICATION NOTE
Requirement on output load
Item
Test conditions
Tested for 1 minute and 1 mA max
Test at 500VDC
Min
Typ
Max
Units
To ensure this module can operate efficiently and
reliably, During operation, 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.
Isolation voltage
Isolation resistance
1000
1000
VDC
MΩ
OUTPUT SPECIFICATIONS
Item
Test conditions
Min
Typ
Max
0.25
±1.5
±1.2
20
Units
W
Output power
Overload Protection
Under normal operating conditions, the output
circuit of these products has no protection against
(3.3V input)
(Others input)
(3.3V output)
(5V output)
(9V output)
(12V output)
(15V output)
For Vin change
Line regulation
Load regulation
of ±1%
overload. The simplest method is to connect
a
12
10.5
8.3
6.8
6.3
self-recovery fuse in series at the input end or add a
circuit breaker to the circuit.
%
15
10% to 100%
load
15
Recommended circuit
15
If you want to further decrease the input/output
ripple, an "LC" filtering network may be connected to
the input and output ends of the DC/DC converter,
see (Figure 1).
15
Output voltage accuracy
Temperature drift
Ripple & Noise*
See tolerance envelope graph
0.03
100% full load
%/℃
mVp-p
KHz
20MHz Bandwidth
50
75
Switching frequency
Full load, nominal input
100
*Test ripple and noise by "parallel cable" method. See detailed operation instructions at Testing .
Note:
1. All specifications measured at T A =25℃, humidity<75%, nominal input voltage and rated output load unless otherwise
specified.
2. See below recommended circuits for more details.
3. Dual output models unbalanced load: ±5%.
TYPICAL CHARACTERISTICS
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. However, the capacitance of the output
filter capacitor must be proper. If the capacitance is
too big,
a startup problem might arise. It's not
recommended to connect any external capacitor in
the application field.
Output Voltage Regulation and Over-voltage
Protection Circuit
The simplest device for output voltage regulation,
OUTLINE DIMENSIONS & PIN CONNECTIONS
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 (Figure
2).
No parallel connection or plug and play.
http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 2
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