QS7B_3UP Series
0.25W - Single Output DC-DC Converter - Fixed Input - Isolated & Unregulated
DC-DC Converter
The QS7B_3UP series are miniature, isolated 0.25W DC/DC converters in
a SIP package.
0.25 Watt
Short circuit protection (SCP)
3KVDC Isolation
Temperature range:
-40°C ~ +105°C
Efficiency up to 80%
Power density up to 0.85W/cm3
Single and dual output from
a single input rail
Industry standard pinout
RoHS compliance
They offer the ideal solution in many space critical applications for
board level power distribution. The internal SMD construction makes it
possible to offer a product with high performance at low cost. The
series offers smaller size, improved efficiency, lower output ripple noise
and 3KVDC isolation.
CE certification
Common specifications
Short circuit protection:
Cooling:
Output specifications
Continuous, self-recovery
Free air convection
-40°C~+105°C
Item
Test condition
Min
Typ
1
Max Units
Output voltage
accuracy
See tolerance envelope
graph
Operation temperature range:
Storage temperature range:
Lead temperature:
Storage humidity range:
Power density:
Line regulation
From high to low Vin
1.2
%
-50°C ~+130°C
Load regulation
(10% to 100% load)
5V & 12V input
• 5V output
• 9V output
• 12V output
• 15V output
300°C MAX, 1.5mm from case for 10 sec
10
9
7
6
13
10
8
%
%
%
%
< 95%
< 0.85W/cm3
7
Case material:
Plastic [UL94-V0]
>3,500,000 hours
2.1g (SIP), 2.4g (DIP)
15V input
MTBF (MIL-HDFK-217F@25°C):
Weight:
• 5V output
• 12V/15V output
6
3
10
4
%
%
Ripple & Noise*
20MHz Bandwidth
100% full load
50
75
mVp-p
%/°C
Temperature drift
0.03
Input specifications
Switching frequency • 3.3VDC input
• 5VDC input
95
kHz
kHz
kHz
kHz
110
130
90
Item
Test condition
Min
Typ
Max
Units
• 12VDC input
Input voltage range • 3.3VDC input
• 5VDC input
2.9
4.5
10.7
13.5
3.3
5
12
15
3.6
5.5
13.1
16.5
V
V
V
V
• 15VDC input
• 12VDC input
• 15VDC input
* Ripple and noise are measured by “parallel cable” method, please see DC-DC
Converter Application Notes for specific operation.
Reflected ripple
current
22
45
mA
Internal power
dissipation
450
mW
Example SIP7 Case:
QS7B_0505S3UP
Q= 0,25 Watt; S7= SIP7; B= Pinning; 05= 5 Vin; 05= 5Vout;
S= Single Output; 3= 3kVDC Isolation; U= Unregulated Output; P=
Short circuit protection (SCP)
Isolation specifications
Item
Test condition
Min
Typ
Max
Units
VDC
Isolation voltage
Tested for 1 minute
and 1mA max
3000
Note:
Isolation resistance
Test at 1000VDC
1
GΩ
1. Operation under minimum load will not damage the converter; However, they
may not meet all specification listed, and that will reduce the life of product.
2. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage
and rated output load unless otherwise specified.
3. Only typical models listed, other models may be different, please contact our
technical person for more details.
4. In this datasheet, all the test methods of indications are based on corporate
standards.
Page 1 of 3
QS7B_3UP – Rev. 2018-1.0
Specifications subject to change without notice.
GAPTEC-Electronic GmbH & Co. KG
sales@gaptec-electronic.com – www.gaptec-electronic.com
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