DC/DC Converter

A_S-1WR2 & B_LS-1WR2 Series

2015.04.20-B/0

Page 3 of 5

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Output Short Circuit Protection**

A24xxS-1WR2 /B24xxLS-1WR2

A0524S-1WR2/B0524LS-1WR2

--

--

1

s

others

Continuous, self-recovery

Note: * Ripple and noise tested with “parallel cable” method, please see DC-DC Converter Application Notes for specific operation methods.

**Supply voltage must be discontinued at the end of short circuit duration for A24xxS-1WR2 /B24xxLS-1WR2 series, and A0524S-1WR2/ B0524LS-1WR2

models.

General Specifications

Item

Operating Conditions

Min.

Typ.

Max.

Unit

Insulation Voltage

Input-output, with the test time of 1 minute and the leak

current lower than 1mA

1500

--

--

VDC

Insulation Resistance

Input-output, insulation voltage 500VDC

1000

--

--

MΩ

Isolation Capacitance

Input-output, 100KHz/0.1V

--

20

--

pF

Operating Temperature

Derating if the temperature ≥85°C, (see Fig. 2)

-40

--

105

℃

Storage Temperature

-55

--

125

Casing Temperature Rise

Ta=25℃

--

25

--

Pin Welding Resistance Temperature

Welding spot is 1.5mm away from the casing, 10 seconds

--

--

300

Storage Humidity

Non-condensing

--

--

95

%RH

Switching Frequency

100% load, nominal input voltage

--

100

--

KHz

MTBF

MIL-HDFK-217F@25℃

3500

--

--

K hours

Physical Specifications

Casing Material

Black flame-retardant heat-proof epoxy resin (UL94-V0)

Package Dimensions

19.50*9.30*6.00 mm

Weight

2.4g(Typ.)

Cooling methods

Free air convection

EMC Specifications

EMI

Conducted disturbance

CISPR22/EN55022 CLASS B (see Fig. 4 for recommended circuit)

Radiated emission

CISPR22/EN55022 CLASS B (see Fig. 4 for recommended circuit)

EMS

Electrostatic discharge

A_S-1WR2

IEC/EN61000-4-2

Contact ±6KV

perf. Criteria B

B_LS-1WR2

IEC/EN61000-4-2

Contact ±8KV

perf. Criteria B

Product Characteristic Curve

3.3VDC output

-10%

80%

20%

10%

40%

60%

-5%

0

+5%

+10%

100%

Typ.

Min.

Max.

-15%

-7.5%

+1.0%

-15%

Tolerance Envelope Curve

Output Current Percentage(%)

(Nominal Input Voltage)

Other output

-10%

80%

20%

10%

40%

60%

-5%

0

+5%

+10%

+15%

100%

Typ.

Min.

Max.

-7.5%

-2.5%

+2.5%

Output Current Percent(%)

(Nominal Input Voltage)

Tolerance Envelope Curve

Fig. 1