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
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
Input voltage range
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*
Output voltage
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
1.0 A
Output current
max.
74 %
78 %
82 %
87 %
91 %
94 %
93 %
95 %
95 %
96 %
Efficiency typ.
@ Vin min.
@ Vin max.
62 %
65 %
69 %
75 %
78 %
84 %
87 %
90 %
92 %
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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