S25-48-1.8 BTCPOWER [Broadband TelCom Power, Inc.], S25-48-1.8 Datasheet - Page 5

• Manufacturer Part Number: S25-48-1.8
• Description: 48Vin 1.8Vout 8.0A
• Manufacturer: BTCPOWER [Broadband TelCom Power, Inc.]

Technical Specification
S25-48-1.8, S25-48-1.8N
Table 1
resistor value
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Trim Voltage
Broadband TelCom Power, Inc. –
+10%
+9%
+8%
+7%
+6%
+5%
+4%
+3%
+2%
+1%
8
7
6
5
4
3
2
1
0
20
15
10
5
0
Fig 5 Trim-down output vs. trim resistance
1
Fig 4 Trim-up output vs. trim resistance
1
2
Trim Resistor
2
Output voltage trim vs. trim
0.094k
3
Trim-down Vout change (%)
Trim-up Vout change (%)
0.17k
0.28k
0.62k
0.89k
1.26k
2.09k
3.30k
7.06k
0.42k
3
4
4
5
5
Trim Voltage
6
6
-10%
-9%
-8%
-7%
-6%
-5%
-4%
-3%
-2%
-1%
7
7
8
8
Trim Resistor
9
9
1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
0.55k
0.73k
0.94k
1.22k
1.56k
2.00k
2.90k
4.20k
6.90k
15.6k
10
10
48Vin 1.8Vout 8A
Protection Features
Input under voltage lockout (UVL)
The input voltage must be at least 35V for the
unit to turn on. Once the unit has been turned on,
it will shut off when the input voltage drops below
34V.
Output Over-Current Protection (OCP)
The unit is protected against over current or short
circuit on the output. When sensing an over
current condition, the unit will enter constant
current operation and reduce the output voltage.
Upon short-circuit condition, the unit will shut
down.
After over-current or short circuit condition is
removed, the unit will resume normal operation
automatically.
Output Over Voltage Protection (OVP)
This unit will shut down and latch off if the output
voltage exceeds the over protection point. The
over-voltage-protection latch is reset only by
another cycle of the input power.
The OVP set point is between 2.2V~2.6V.
Over Temperature Protection (OTP)
This unit will shut down if the case temperature
exceeds the over temperature set point. The unit
will resume normal operation automatically when
the case temperature drops down.
The OVP set point is around 100 C.
PS S25-48-1.8 Rev 3 16-1-04
BTCPower
BTCPower
P 5 of 11
T M