Data Sheet

Non-Isolated DC/DC Converter (POL)
TSR 3 Series, 3 A
•
High performance 3 Amp. switching
regulator
•
Suitable for positive & negative output
circuit
•
High efficiency up to 95 %
•
Adjustable output voltages
•
Wide input voltage ranges 2.5–5.5,
4.5–14 and 10–30 VDC
•
Short circuit protection
•
Remote On/Off input
•
Low output ripple & noise
•
3-year product warranty
The TSR 3 models are non isolated step down switching regulators. Since pro-
duction May 2013 they can also be operated with negative output voltage.
They come in a very compact open frame package of 15.5 x 9.4 x 6.2mm. The
high efficiency of up to 95% admits a full load operation up to 50°C and up to
85°C with 50% current reduction. A low standby current, a very wider input
range and no requirement for heatsink give these switching regulators a signifi-
cant advantage over linear regulators.
Togther with a remote On/Off input and protection against short circuit the TSR
3 Series models are ideal point of load regulators for high reliable and energy
critical applications.
Models
Order Code
Output Current
max.
Input Voltage
Range
Output Voltage
nom. (adjustable)
Efficiency
typ.
TSR 3-0533
3'000 mA
2.5 - 5.5 VDC (5 VDC nom.)
0.6 VDC (0.6 - 3.3 VDC)
95 % (at 2.5 Vout)
TSR 3-1250
4.5 - 14 VDC (12 VDC nom.)
0.6 VDC (0.6 - 6.0 VDC)
93 % (at 3.3 Vout)
TSR 3-2450
10 - 30 VDC (24 VDC nom.)
3 VDC (3.0 - 6.0 VDC)
91 % (at 5.0 Vout)
TSR 3-24150
5 VDC (5.0 - 15.0 VDC)
95 % (at 12 Vout)
Options
Suffix A
- Optional models with angular pins (see outline dimensions)
Note
- TSR 3-1250: max. 9 Vin if Vout <0.9 VDC
- For external circuit proposal for negative output voltage, refer to application note
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September 2, 2020
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