Datasheet

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DC/DC Converters

TSN-1 Series, -1 A Switching Regulator

Features

◆ Non-isolated converter for negative output

◆ Small size and low proﬁle

◆ Pin compatible with LM79xx linear regulators

◆ No heatsink required

◆ High efﬁciency up to 96%

◆ Operation temp. range –40°C to +85°C

◆ Protection against overload, short circuit

and over-temperature

◆ Fixed switching frequency

◆ Wide input range up to -32 VDC

◆ Excellent line / load regulation

◆ Low standby current

◆ 3-year product warranty

The new TSN-1 series step-down switching regulators are drop-in replacement for

inefﬁcient 79xx linear regulators. A high efﬁciency up to 96 % allows full load op-

eration up to +70°C (+85°C with derating) ambient temperature without the need of

any heat-sink or forced air cooling.

The TSN-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. They are suitable for negative output circuits.

The high efﬁciency and low standby power consumption make these regulators an

ideal solution for energy sensitive applications.

Order code Input voltage Output voltage Output current Efﬁciency typ.

straight pins angular pins range / (nominal) max.

@ Vin min. @

Vin max.

TSN 1-2450 TSN 1-2450A

-7.0 – -32 VDC (12 VDC) -5.0 VDC 91.5 % 84.5 %

TSN 1-2452 TSN 1-2452A

-7.0 – -32 VDC (12 VDC) -5.2 VDC 92.0 % 85.0 %

TSN 1-2460 TSN 1-2460A -8.0 – -32 VDC (12 VDC)

-6.0 VDC 92.5 % 86.5 %

TSN 1-2480 TSN 1-2480A -10.5 – -32 VDC (12 VDC)

-8.0 VDC

-1.0 A

94.0 % 89.0 %

TSN 1-2490 TSN 1-2490A -11.5 – -32 VDC (24 VDC)

-9.0 VDC 94.5 % 90.5 %

TSN 1-24120 TSN 1-24120A -15 – -32 VDC (24 VDC)

-12.0 VDC 96.0 % 92.0 %

TSN 1-24150 TSN 1-24150A -18 – -32 VDC (24 VDC)

-15.0 VDC 96.0 % 93.5 %

Models

Summary of content (3 pages)

PAGE 1
DC/DC Converters TSN-1 Series, -1 A Switching Regulator Features ◆ Non-isolated converter for negative output ◆ Small size and low profile ◆ Pin compatible with LM79xx linear regulators ◆ No heatsink required ◆ High efficiency up to 96% ◆ Operation temp.
PAGE 2
DC/DC Converters TSN-1 Series -1 A Input Specifications No load input current Reflected ripple current –3 mA typ. 100 mAp-p typ. Input filter internal capacitors Output Specifications Voltage set accuracy ±2 % (at full load) Regulation – Input variation 1.0 % max. – Load variation (10 – 100 %) 0.6 % max. Startup voltage overshoot 1.0 % max. Minimum load not required Ripple and noise (20 MHz Bandwidth) 5.0 – 5.2 VDC models: 50 mVpk-pk max. 6 – 15 VDC models: 75 mVpk-pk max.
PAGE 3
DC/DC Converters TSN-1 Series -1 A Outline Dimensions Straight pin version Angular pin version (suffix A) 0.5 (0.02) 0.5 (0.02) 1.5 (0.06) 7.5 (0.30) 3.0 (0.11) 4.1 (0.16) 7.5 (0.30) Bottom view 3.1 (0.12) 0.3 (0.01) Bottom view 0.3 (0.01) 11.7 (0.46) 11.7 (0.46) 3.3 2.54 2.54 16.5 (0.65) 1 3.3 2 3 0.5 (0.02) 3 4.1 2 (0.16) 1 0.5 (0.02) 16.5 (0.65) Pin-Out Pin Single 1 GND 2 -Vin 3 -Vout 2.54 2.54 (0.13) (0.1) (0.