ISH Series

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2

DC-DC Converter

Input

Output

Characteristic

Minimum

Typical

Maximum

Units

Notes & Conditions

Output Voltage

3.3

24

VDC

See Models and Ratings table

Initial Set Accuracy

-7.5, +2.5

%

At 70% load

Minimum Load

10

%

Line Regulation

±1.2

%

Per 1% change of input voltage (±1.5% for 3V3 output)

Load Regulation

%

See graph

Start Up Delay

2

ms

Ripple and Noise

100

mV pk-pk

20 MHz bandwidth, measured using 0.1 µF capacitor

Transient Response

3

% deviation

Recovery to within 1% in 500 µs for a 25% load change (5%

max. deviation for 3.3 & 5 V models)

Short Circuit Protection

Continuous, with auto recovery, except 1 s max for

24 input V models

Maximum Capacitive Load

220

µF

Temperature Coefficient

0.03

%/˚C

Characteristic

Minimum

Typical

Maximum

Units

Notes & Conditions

Input Voltage Range

4.50

5.50

VDC

5 V nominal

10.80

13.20

VDC

12 V nominal

13.50

16.50

VDC

15 V nominal

21.60

26.40

VDC

24 V nominal

Input Current

See Models and Ratings table

Input Reflected Ripple

15

mA pk-pk

Through 12 µH inductor and 47 µF capacitor

Input Surge

9

VDC for 1 s

5 V models

18

VDC for 1 s

12 V models

21

VDC for 1 s

15 V models

30

VDC for 1 s

24 V models

Input Filter

Capacitor

General

Characteristic

Minimum

Typical

Maximum

Units

Notes & Conditions

Efficiency

See Models and Ratings table

Isolation: Input to Output

1500

VDC

For optional high isolation versions, 3000 VDC input to

output add suffix -H to model number

Switching Frequency

50

300

kHz

Isolation Resistance

Ω

Input to output, tested at 500 VDC

Isolation Capacitance

20

pF

Input to output

Power Density

31.8

Mean Time Between Failure

3500

kHrs

MIL-HDBK-217F, +25 °C GB

Weight

0.003 (1.5)

lb (g)

Environmental

Characteristic

Minimum

Typical

Maximum

Units

Notes & Conditions

Operating Temperature

-40

+105

°C

Derate from 100% load at +100 °C to 80% load at 105 °C

Storage Temperature

-55

+125

°C

Case Temperature

+115

°C

Operating Humidity

95

% RH

Non-condensing

Cooling

Natural convection