DC/DC Converters
TSR-1SM Series, 1 A
Features
◆ SMD-package
◆ Up to 96 % efficiency
◆ No thermal layer required
◆ Built in filter capacitors
◆ Operation temp. range –40°C to +85°C
◆ Short circuit protection
◆ Wide input operating range
◆ Excellent line / load regulation
◆ Low standby current
The new TSR-1SM series models of step-down switching regulators have a high ef-
ficiency up to 96 % which allows full load operation up to +65°C ambient tempera-
ture without the need of any heat transmission layer.
Excellent output voltage accuracy ( 2%) and low standby current (~1 µA) are fea-
tures that distinguish these switching regulators from linear regulators.
◆ 3-year product warranty
Models
Order code
Input voltage range
Output voltage
Output current
max.
Efficiency typ.
@ Vin min.
@
Vin max.
90.0 %
91.5 %
92.0 %
94.0 %
62 %
TSR 1-0512SM
TSR 1-0515SM
TSR 1-0518SM
TSR 1-0525SM
TSR 1-2412SM
TSR 1-2415SM
TSR 1-2418SM
TSR 1-2425SM
TSR 1-2433SM
TSR 1-2450SM
TSR 1-2465SM
TSR 1-2490SM
TSR 1-24120SM
TSR 1-24150SM
3.0 – 5.5 VDC
3.0 – 5.5 VDC
3.0 – 5.5 VDC
3.8 – 5.5 VDC
4.6 – 36 VDC*
4.6 – 36 VDC*
4.6 – 36 VDC*
4.6 – 36 VDC*
4.75 – 36 VDC*
6.5 – 36 VDC*
9.0 – 36 VDC*
12 – 36 VDC*
15 – 36 VDC*
18 – 36 VDC*
1.2 VDC
1.5 VDC
1.8 VDC
2.5 VDC
1.2 VDC
1.5 VDC
1.8 VDC
2.5 VDC
3.3 VDC
5.0 VDC
6.5 VDC
9.0 VDC
12 VDC
15 VDC
90.5 %
92.0 %
92.5 %
94.5 %
74 %
79 %
67 %
82 %
70 %
1 A
87 %
75 %
91 %
80 %
94 %
84 %
94 %
89 %
95 %
90 %
95 %
92 %
96 %
94 %
* For input voltage higher than 32 VDC an input capcitor 22 µF / 50 V is required. See application notes (page 3)
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