UWR-12/1250-D24A Murata Power Solutions Inc, UWR-12/1250-D24A Datasheet - Page 5

• Manufacturer Part Number: UWR-12/1250-D24A
• Description: Module DC-DC 1-OUT 12V 1.25A 15W 6-Pin Case C14
• Manufacturer: Murata Power Solutions Inc
• Type: Step Downr

Specifications of UWR-12/1250-D24A

• Package: 6Case C14
• Output Current: 1.25 A
• Output Voltage: 12 V
• Input Voltage: 24 V
• Number Of Outputs: 1
• Output Power: 15 W
• Switching Regulator: Yes

Soldering Guidelines
Murata Power Solutions recommends the specifi cations below when install-
ing these converters. These specifi cations vary depending on the solder type.
Exceeding these specifi cations may cause damage to the product. Be cautious
when there is high atmospheric humidity. Your production environment may
differ; therefore please thoroughly review these guidelines with your process
engineers.
For Sn/Ag/Cu based solders:
Maximum Preheat Temperature
Maximum Pot Temperature
Maximum Solder Dwell Time
For Sn/Pb based solders:
Maximum Preheat Temperature
Maximum Pot Temperature
Maximum Solder Dwell Time
Wave Solder Operations for through-hole mounted products (THMT)
UWR-1.2/6000-D12A
UWR-1.2/6000-D24A
UWR-1.2/6000-D48A
UWR-1.5/6000-D12A
UWR-1.5/6000-D24A
UWR-1.5/6000-D48A
UWR-1.8/6000-D12A
UWR-1.8/6000-D24A
UWR-1.8/6000-D48A
UWR-2.5/6000-D12A
UWR-2.5/6000-D24A
UWR-2.5/6000-D48A
UWR-3.3/4250-D12A
UWR-3.3/4250-D24A
UWR-3.3/4250-D48A
Model
R
R
R
R
R
T
T
T
T
T
R
R
R
R
R
DOWN
DOWN
DOWN
DOWN
DOWN
T
T
T
T
T
UP
UP
UP
UP
UP
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
115° C.
270° C.
7 seconds
105° C.
250° C.
6 seconds
Trim Equation
2.49(V
0.995(V
V
5.32(V
1.6(V
V
V
V
V
2(V
O
3.16
O
O
O
O
3.73
1.968
1.23
2.48
3.3 – V
1.2 – V
1.5 – V
2.5 – V
1.8 – V
– 3.3
– 1.2
– 1.5
– 1.8
– 2.5
O
O
O
– 1.24)
O
– 1.23)
O
– 1.27)
– 0.7)
– 1.24)
O
O
O
O
O
–16.9
–2
–2
–2.49
–11
www.murata-ps.com
–16.9
–2
–2
–2.49
–11
Start-Up Threshold and Undervoltage Shutdown
Under normal start-up conditions, devices will not begin to regulate until the
ramping-up input voltage exceeds the Start-Up Threshold Voltage (35V for
"D48A" models). Once operating, devices will not turn off until the input volt-
age drops below the Undervoltage Shutdown/Lockout limit (34V for "D48A"
models). Subsequent re-start will not occur until the input is brought back up to
the Start-Up Threshold. This built-in hysteresis obviously avoids any indetermi-
nate on/off situations at a single voltage.
Start-Up Time
The V
ing input voltage crosses the turn-on threshold point and the fully-loaded output
voltage enters and remains within its specifi ed accuracy band. Actual measured
times will vary with input source impedance, external input capacitance, and the
slew rate and fi nal value of the input voltage as it appears to the converter.
On/Off Control with the nominal input voltage already applied to the converter.
The specifi cation defi nes the interval between the time at which the converter
is turned on and the fully-loaded output voltage enters and remains within its
specifi ed accuracy band.
factory-adjusted output accuracy. V
UWR-3.3/4500-D48ANT
UWR-5/3000-D12A
UWR-5/3000-D24A
UWR-5/3000-D48A
UWR-5/3000-D48ANST
UWR-12/1250-D12A
UWR-12/1250-D24A
UWR-12/1250-D48A
UWR-15/1000-D12A
UWR-15/1000-D24A
UWR-15/1000-D48A
The On/Off to V
Accuracy of adjustment is subject to tolerances or resistor values and
IN
to V
Model
OUT
Start-Up Time is the interval between the time at which a ramp-
OUT
Start-Up Time assumes the converter is turned off via the
6 Amp/15 Watt DC/DC Converters
R
R
R
R
R
05 Apr 2011 MDC_UWR_7-15.F10 Page 5 of 12
R
T
R
T
R
T
R
T
T
R
DOWN
DOWN
DOWN
DOWN
DOWN
T
O
where K =
where K =
T
T
T
T
UP
UP
UP
UP
UP
Trim Equation
= desired output voltage.
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
Single Output, High-Density,
(k ) =
(k ) =
UWR Models
V
3.3 – V
0.78
2.49(V
email: [e-mail]
7.5(V
V
6.34(V
7.87(V
1.27
O
K
V
3.3
K
3.3
V
O
V
36.23
– 3.3
56.16
6.292
O
– 4.997
O
5 – V
O
5.0 – V
9.3
12 – V
15 – V
– 12
– 15
– 5
–6.2
O
–8.25
O
O
O
O
– 1.24)
– 2.527)
– 5.714)
– 7.136)
O
O
O
O
–15
–10
–49.9
–63.4
–15
–49.9
–63.4