DC/DC Converters
TSR-1 Series, 1 A
Features
◆ Up to 96 % efficiency
– No heat-sink required
◆ Pin compatible with LMxx linear regulators
◆ SIP-package fits existing TO-220 footprint
◆ 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
◆ 3-year product warranty
The new TSR-1 series step-down switching regulators are drop-in replacement for
inefficient 78xx linear regulators. A high efficiency up to 96 % allows full load
operation up to +60 °C ambient temperature without the need of any heat-sink or
forced cooling.
The TSR-1 switching regulators provide other significant features over linear regu-
lators, i.e. better output accuracy ( 2 %), lower standby current of 2 mA and no
requirement of external capacitors. The high efficiency and low standby power
consumption makes these regulators an ideal solution for many battery powered
applications.
Models
Order code
Input voltage range
Output voltage
Output current
max.
Efficiency typ.
@ Vin min.
@
Vin max.
62 %
65 %
69 %
75 %
78 %
84 %
87 %
90 %
92 %
94 %
TSR 1-2412
TSR 1-2415
TSR 1-2418
TSR 1-2425
TSR 1-2433
TSR 1-2450
TSR 1-2465
TSR 1-2490
TSR 1-24120
TSR 1-24150
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
3.3 VDC
5.0 VDC
6.5 VDC
9.0 VDC
12 VDC
15 VDC
74 %
78 %
82 %
87 %
91 %
94 %
93 %
95 %
95 %
96 %
1.0 A
* 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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