Datasheet
Dynamic control of the remote on/off function is best accomplished with a
mechanical relay or an open-collector/open-drain drive circuit (optically isolated
if appropriate). The drive circuit should be able to sink appropriate current (see
Performance Specifications) when activated and withstand appropriate voltage
when deactivated. Applying an external voltage to pin 2 when no input power is
applied to the converter can cause permanent damage to the converter.
2
3
+Vcc
13V CIRCUIT
5V CIRCUIT
–VIN
O N /O F F
C O N TR O L
1
+VIN
Figure 8. Driving the Negative Logic On/Off Control Pin
(simplified circuit)
2
3
+V
CC
O N /O F F
C O N TR O L
1
–VIN
+VIN
Figure 9. Driving the Negative Logic On/Off Control Pin
(simplified circuit)
Soldering Guidelines
Murata Power Solutions recommends the specifications below when installing these converters. These specifications vary depending on the solder type. Exceeding these specifica-
tions may cause damage to the product. Your production environment may differ; therefore please thoroughly review these guidelines with your process engineers.
Wave Solder Operations for through-hole mounted products (THMT)
For Sn/Ag/Cu based solders: For Sn/Pb based solders:
Maximum Preheat Temperature 115° C. Maximum Preheat Temperature 105° C.
Maximum Pot Temperature 270° C. Maximum Pot Temperature 250° C.
Maximum Solder Dwell Time 7 seconds Maximum Solder Dwell Time 6 seconds
On/Off Control
The input-side, remote On/Off Control function (pin 2) can be ordered to operate
with either logic type:
Positive (no suffix) logic models are enabled when pin 2 is left open (or is
pulled high, applying +3.5V to +13.5V with respect to –Input, pin 1) as per
Figure 8. Positive-logic devices are disabled when pin 2 is pulled low (0 to 0.8V
with respect to –Input).
Negative (“N” suffix) logic devices are off when pin 2 is left open (or pulled
high, applying +3.5V to +13.5V), and on when pin 2 is pulled low (0 to 1V) with
respect to –Input as shown in Figure 9.
www.murata-ps.com/support
Murata Power Solutions, 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. 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. © 2016 Murata Power Solutions, Inc.
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Single Output UCQ Models
Low-Profile, Quarter Brick, 8.3-40 Amp
Isolated DC-DC Converters
MDC_UCQ Models.E02 Page 24 of 24