QA-XT&QB-XT
Series
-XT
0.25W, Fixed Input, Isolated Dual/Single Output SMD DC-DC CONVERTER
Models Single output
FEATURES
◆
◆
◆
◆
◆
◆
◆
◆
Model
QB0303XT
QB0305XT
QB0312XT
QB0315XT
QB0503XT
QB0505XT
Input Voltage
(V)
3-3.6
3-3.6
3-3.6
3-3.6
4.5-5.5
4.5-5.5
4.5-5.5
4.5-5.5
4.5-5.5
4.5-5.5
10.8-13.2
10.8-13.2
10.8-13.2
21.6-26.4
21.6-26.4
21.6-26.4
Output Voltage
(V)
3.3
5
12
15
3.3
5
9
12
15
24
3.3
5
12
5
12
15
Output Current max
(mA)
75
50
20
16
75
50
27
20
16
10
75
50
20
50
20
16
Isolation
(VDC)
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
Efficiency
(%)
60
60
63
64
61
64
65
66
67
64
60
65
66
60
64
63
RoHS Compliant
SMD Package
Low ripple and noise
High efficiency up to 68%
Operating temperature -40℃to+ 85℃
Input / Output Isolation 1000 VDC
Pin compatible with multiple Manufacturers
UL94-VO Package
QB0509XT
QB0512XT
QB0515XT
QB0524XT
QB1203XT
QB1205XT
QB1212XT
QB2405XT
MODEL SELECTION
QB 05 05 X T
①Product
Series
③Output
Voltage
⑤SMD
Package
①
②
③
④
⑤
②Input
Voltage
④Fixed
Input
QB2412XT
QB2415XT
APPLICATIONS
1.Datasheets
are
updated
as
needed
and
as
such,
Once
specifications are subject to change without notice.
printed or downloaded, datasheets are no longer controlled by
MICRODC; refer to www.microdc.cn for the most current
product specifications.
2.Product labels shown, including safety agency certifications
on labels, may vary based on the date manufactured.
3. Mechanical drawings and specifications are for reference
only.
4. All specifications are measured at an ambient temperature of
25°C, humidity<75%,nominal input voltage and at rated output
load unless otherwise specified.
5. MICRODC may not have conducted destructive testing or
chemical analysis on all internal components and chemicals at
the time of publishing this document. CAS numbers and other
limited information are considered proprietary and may not be
available for release.
6. This product is not designed for use in critical life support
systems, equipment used in hazardous environments, nuclear
control systems or other such applications which necessitate
specific safety and regulatory standards other the ones listed in
this datasheet.
7. Warranty is in accordance with microdc’s sandard Terms of
Sale available at www.microdc.cn.
Models Dual output
Model
QA0505XT
QA0512XT
QA0515XT
QA0524XT
QA1205XT
QA1212XT
QA1215XT
QA2405XT
QA2412XT
QA2415XT
Input Voltage
(V)
4.5-5.5
4.5-5.5
4.5-5.5
4.5-5.5
10.8-13.2
10.8-13.2
10.8-13.2
21.6-26.4
21.6-26.4
21.6-26.4
Output Voltage
(V)
±5
±12
±15
±24
±5
±12
±15
±5
±12
±15
Output Current max
(mA)
±25
±11
±9
±5
±25
±11
±9
±25
±11
±9
Isolation
(VDC)
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
Efficiency
(%)
63
65
67
64
66
67
67
62
68
67
MICRODC R ESERVES THE COPYRIGHT
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 3
QA-XT&QB-XT
Series
-XT
Input Specifications
Parameters
Nominal
3
Voltage range
5
12
14
Filter
Typical
3-3.6
4.5-5.5
10.8-13.2
21.6-26.4
Capacitor
Maximum
Units
VDC
Isolation Specifications
Parameters
Tested I/O voltage
Resistance
Capacitance
Conditions
60 sec
Typical
> 1000
6
Rated
1000
Units
VDC
MOhm
pF
Output Specifications
Parameters
Voltage accuracy
Voltage balance
Line voltage regulation (Single)
Line voltage regulation (Dual)
Load voltage regulation (Single)
Load voltage regulation (Dual)
Temperature coefficient
Ripple & Noise
At 20MHz Bandwidth
Conditions
See the tolerance graph
Dual Output
For 1% change of Vin
For 1% change of Vin
Load 10 – 100%
Load 10 – 100%
Typical
±5
±2
±1.2
±1.2
10
10
±0.03
75
Maximum
Units
%
%
%
%
%
%
%/℃
mV p-p
General Specifications
Parameters
Switching frequency
Short circuit protection
Operating temperature
Storage temperature
Cooling
Humidity
Case material
Weight
Dimensions (L x W x H)
MTBF
Max Case Temperature
Single 1000VDC
Dual 1000VDC
1.5
0.50 x 0.44 x 0.26 inch
0.60 x 0.44 x 0.26 inch
12.70 x 11.20 x 6.70 mm
15.24 x 11.20 x 6.70 mm
Plastic UL94-VO
g
Without derating
-40 to +85
-55 to +125
Free air convection
95
%
Conditions
100% load single
100% load dual
Typical
100
150
Maximum
Units
KHz
KHz
Momentary (1sec)
℃
℃
>3 500 000hrs (MIL-HDBK -217F, Ground Benign, t=+25 C)
95
℃
NOTE: All specifications in this datasheet are measured at an ambient temperature of 25°C, humidity<75%, nominal input voltage and at rated output load
unless otherwise specified
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 3
QA-XT&QB-XT
Series
-XT
Pin Out Specifications
Pin
1
3
5
7
8
10
12
14
Typical characteristics
Dual
Single
-V Input
+V Input
N.C.
- V Output
+ V Output
N.C.
N.C.
N.C.
Pin
1
3
5
7
9
10
12
14
16
18
-V Input
+V Input
N.C.
Common
-V Output
N.C.
+V Output
N.C.
N.C.
N.C.
Dimensions Single 1000VDC
Dimensions Dual 1000VDC
The package form the same to our series products A-XT-1W.
RoHS COMPLIANT INFORMATION
Microdc Professional Power Module,Inc.
Tel:0086-20-86000646 E-mail:tech@microdc.cn
Website:http://www.microdc.cn
Microdc Professional Power module,Inc.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. Specifications are subject to change without notice.
©2010
Microdc Professional Power Module, Inc. Guangzhou
This series is compatible with RoHS soldering systems with a peak wave solder temperature of
300°C for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot
Dipped over Matte Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate.
Both types in this series are backward compatible with Sn/Pb soldering systems.
REACH COMPLIANT INFORMATION
This series has proven that this product does not contain harmful chemicals, it also has harmful
chemical substances through the registration, inspection and approval.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 3 of 3
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