General

Switching Frequency

200 kHz

Isolation

Input - Output

500 VDC

Input - Case

500 VDC

Output - Case

500 VDC

Isolation Resistance - Input to Output

109 Ohms

Isolation Capacitance - Input to Output

80 pF

No Load Input Power

0.70 W

Case Temperature

Standard Operating Range

-25 to +85°C

Storage Range

-40 to +125°C

Humidity Max., Non-Condensing

95%

Vibration, 3 Axes, 5 Min Each

5 g, 10 - 55 Hz

Safety

UL, cUL, TUV

Weight (approx.)

0.6 oz

1 Continuous short circuit protection is provided. Long-term continuous
operation in this mode is not recommended. Converter will auto-restart
once fault has been removed.

Specifications typically at 25°C, normal line, and full load, unless
otherwise stated.

Soldering Conditions: I/O pins, 260°C, ten seconds; fully compatible with
commercial wave-soldering equipment.

Safety: Agency approvals may vary from model to model. Please consult
factory for specific model information.

Setpoint Accuracy

±5%

Line Regulation Vin Min. - Vin Max., Iout Rated

±1.5% Vout

Load Regulation Iout Min. - Iout Max., Vin Nom.

±2.5% Vout

Minimum Output Current

10% Iout Rated

Dynamic Regulation, Loadstep

25% Iout

Pk Deviation

1% Vout

Settling Time

500 ms

Temperature Coefficient

0.02%/°C

Ripple And Noise, 20 MHz BW

150 mV

Short Circuit Protection 1

Continuous

Current Limit

180%

Output

Voltage Range

5 VDC Nominal

4.5 - 9 VDC

12 VDC Nominal

9 - 18 VDC

Reflected Ripple

20% Iin Max.

Reverse Input Current

100% Iin Max.

TECHNICAL SPECIFICATIONS

BWS DC/DC converters offer excellent regulation and
isolation in an industry-standard DIP package. The BWS
is ideal for industrial, telecom, and networking
applications, and features short circuit protection, low
profile, and 500 VDC isolation. Please see the BWD series
for dual output applications.

· Industry Standard DIP

Package

· Industry Standard Pinout
· 85°C Case Operation
· Short Circuit Protection

· Wide Range Inputs
· Input Pi Filter
· Regulated Outputs
· 500V Isolation

Input

DESCRIPTION

FEATURES

BWS SERIES - 2.5 WATT

Notes

REV. 10/01

MODEL

INPUT VOLTAGE

MAXIMUM INPUT

OUTPUT

RATED OUTPUT

RIPPLE & NOISE

TYPICAL

(VOLTS)

RANGE (VOLTS)

CURRENT (AMPS)*

VOLTAGE (VOLTS)

CURRENT (AMPS)

pk-pk (mV)

EFFICIENCY**

BWS0505

4.5 - 9

0.85

0.5

150

71%

BWS0512

4.5 - 9

0.95

0.25

150

79%

BWS1205

9 - 18

0.45

0.5

150

70%

BWS1212

9 - 18

0.5

0.25

150

79%

BWS1215

9 - 18

0.5

0.2

150

79%

BWS4805

36 - 72

0.10

0.5

150

74%

NOTES:

* Maximum input current at minimum input voltage, maximum rated output power.
** At nominal Vin, rated output.

BWS SERIES - 2.5 WATT

Thermal Impedance

Natural Convection

23.6 °C/W

100 LFM

16.7 °C/W

200 LFM

13.1 °C/W

300 LFM

9.4 °C/W

400 LFM

8.5 °C/W

Tolerances

Note:
Thermal impedance data is dependent
on many environmental factors. The
exact thermal performance should be
validated for specific application.

Pin

Function

1 & 24

No Pin

2 & 23

-Vin / +Vin

3 & 22

-Vin / +Vin

4 & 21

No Pin

5 & 20

No Pin

6 & 19

No Pin

7 & 18

No Pin

8 & 17

No Pin

9 & 16

NC / -Vout

10 & 15

NC / NC

11 & 14

NC / +Vout

12 & 13

No Pin

Inches:
.XX ± 0.040
.XXX ± 0.010

Pin:
± 0.002 ± 0.05

(Dimensions as listed unless otherwise

specified.)

(Millimeters)
.X ± 1.0
.XX ± 0.25

MECHANICAL DRAWING

BOTTOM VIEW

MODELS - (See the last page of section for options.)

OPTION

SUFFIX

APPLICABLE SERIES

REMARKS

Negative Logic

HAS, HBD, HBS, HES, HLS, HLD, LES,

TTL "Low" Turns Module ON

QBS, QES, QLS, TES, TQD

TTL "High" Turns Module OFF

Lucent-Compatible

HAS, HBD, HBS, HES, HLS, QBS, QES,
QLS

Terminal Strip

XWS, XWD, XWT

Trim

IAS, LES

Enable

IAD, IAS, LES, SMS

Trim and Enable

IAS, LES

Current Share

SMS

Headerless

Encapsulated EWS, IWS, OWS

Pin Length and Heatsink Options

Standard Pin Length is 0.180" (4.6mm)

0.110" (2.8mm) Pin Length

All Units (Except SMS)

0.150" (3.8mm) Pin Length

All Units (Except SMS)

0.24" (6.1mm) Horizontal Heatsink

All Units (All Units Except DIP, HLS, HLD, QLS,

Includes Thermal Pad