Datasheet

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DC/DC Converters

TSRN-1SM Series, 1 A Switching Regulator

Features

◆ Compact SMD package

◆ Suitable for positive & negative output circuit

◆ Adjustable output voltage

◆ Wide input up to 42 VDC

◆ Remote On/Off input

◆ Builtinltercapacitors

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

◆ No heat-sink required

◆ Over-temperature protection

◆ Short circuit protection

◆ Excellent line / load regulation

◆ Low standby current

◆ Not moisture sensitivity level (MSL) 1

◆ Qualiedforleadfreereowsolder

process

◆ 3-year product warranty

The new TSRN-1SM series are step-down non–isolated switching regulators in com-

pact SMD package. They are an ideal solution to replace inefﬁcient linear regula-

tors. The high efﬁciency up to 95 % allows full load operation up to +55°C (+85°C

with derating) ambient temperature without the need of forced aircooling.

The TSRN-1SN switching regulators provide other signiﬁcant features over linear

regulators, i.e. better output accuracy (±2 %), lower standby current of ~4 mA and

no requirement of external capacitors. They are suitable for positive or negative

output circuits and offer a trim input for output voltage adjustment. The high ef-

ﬁciency, low standby power consumption and remote On/Off function make these

regulators an ideal solution for energy sensitive applications.

Order code

Input voltage Output voltage Output current Efciencytyp.

range

/ (nominal) nominal trim range

max.

@ Vin min. @

Vin max.

Positive output circuit

TSRN 1-0525SM

3.0 – 5.5 VDC (5 VDC) 2.5 VDC 1.2 – 3.6 VDC 95.5 % 95 %

TSRN 1-2433SM

4.6 – 42 VDC (12 VDC) 3.3 VDC 1.5 – 5.5 VDC 87 % 80 %

TSRN 1-2450SM

6.5 – 42 VDC (12 VDC) 5.0 VDC 2.5 – 8.0 VDC 91.5 % 83 %

TSRN 1-2490SM

10.5 – 42 VDC (12 VDC) 9.0 VD C 4.5 – 12.6 VDC

1.0 A

94.5 % 89 %

TSRN 1-24120SM

13.5 – 42 VDC (24 VDC) 12 VDC 4.5 – 13.5 VDC 95 % 91 %

TSRN 1-24150SM

16.5 – 42 VDC (24 VDC) 15 VDC 4.5 – 15.5 VDC 95.5 % 92.5 %

Negative output circuit

TSRN 1-2433SM

4.6 – 32 VDC (12 VDC) -3.3 VDC -1.5 – -5.5 VDC 0.6 A 74 % 77 %

TSRN 1-2450SM

4.6 – 31 VDC (12 VDC) -5.0 VDC -2.5 – -8.0 VDC 0.4 A 80 % 78 %

TSRN 1-2490SM

7 – 27 VDC (12 VDC) -9.0 VDC -4.5 – -12.6 VDC 0.3 A 85 % 82 %

TSRN 1-24120SM

7 – 24 VDC (12 VDC) -12 VDC -4.5 – -13.5 VDC 0.3 A 84 % 86 %

TSRN 1-24150SM

7 – 21 VDC (12 VDC) -15 VDC -4.5 – -15.5 VDC 0.2 A 85 % 84 %

Models

1) Same order code for positive and negative output operation, see page 3 for circuits.

2) For input voltage higher 36 VDC an input capacitor 22 µF/ 50 V is required.

3) For positive output circuit, input voltage must be higher than output voltage set: >0.5 V for TSRN1-0525SM and >1.5 V for other models.

For negative output circuit, input voltage plus absolute output voltage set must not exceed 36 VDC (Vin + |Vout| < 36 VDC)

Summary of content (4 pages)

PAGE 1
DC/DC Converters TSRN-1SM Series, 1 A Switching Regulator Features ◆ Compact SMD package ◆ Suitable for positive & negative output circuit ◆ Adjustable output voltage ◆ Wide input up to 42 VDC ◆ Remote On/Off input ◆ Built in filter capacitors ◆ Operation temp. range –40°C to +85°C ◆ No heat-sink required ◆ Over-temperature protection ◆ Short circuit protection The new TSRN-1SM series are step-down non–isolated switching regulators in com◆ Excellent line / load regulation pact SMD package.
PAGE 2
DC/DC Converters TSRN-1SM Series 1A Input Specifications No load input current – positive output circuit TSRN 1-0525SM: TSRN 1-2433SM: other models: – negative output circuit -3.3 / -5.5 Vout models: -9.0 / -12 Vout models: TSRN 1-24150SM: Reflected ripple current 6 mA typ. 1.5 mA typ. 4 mA typ. 3 mA typ. 7 mA typ. 10 mA typ. 100 mA typ. Input filter internal capacitors Output Specifications Voltage set accuracy ±2 % (at full load) Regulation – Input variation 0.
PAGE 3
DC/DC Converters TSRN-1SM Series 1A Physical Specifications Casing material non-conductive plastic Weight 1.7 g (0.06 oz) Lead-free reflow solder process as per J-STD-020D.01 (to find at: www.jedec.org - free registration rqueired) – max. peak body temperature 245°C Moisture sensitivity level (MSL) level 1 as per J-STD-033B.1 (to find at: www.jedec.org - free registration required) Washing baking after washing: 100°C for 30 min. Packaging www.tracopower.
PAGE 4
DC/DC Converters TSRN-1SM Series 1A 15.2 (0.29) Pin-Out 7.3 0.30 (0.01) Outline Dimensions (0.60) Pin pos. neg. 1 +Vin +Vin 5 +Vout GND 6 5.08 7 6 top view 1 2.54 (0.10) 5 10.16 (0.40) (0.47) 9 (0.10) 11.82 10 (0.20) (0.37) (0.10) 2.54 9.3 2.54 Trim 7 GND -Vout 9 GND -Vout 10 Remote On/Off Dimensions in [mm], () = Inch Pin pitch tolerances: ±0.25 (±0.01) Pin profile tolerance: ±0.1 (±0.004) Other tolerances: ±0.5 (±0.