ARH28XXXXS SERIES

(28V Input, Single Output)

4

2016-06-29

Notes to Specifications

1. Operation outside absolute maximum/minimum limits may cause permanent damage to the device. Extended operation at the limits

may permanently degrade performance and affect reliability.

2. Device performance specified in Electrical Performance table is guaranteed when operated within recommended limits. Operation

outside recommended limits is not specified.

3. Parameter measured from 28V to 18V or to 50V while load remains fixed at 10%, 50% and 100% of Imax.

4. Parameter measured from 50% to 10% or 100% of maximum load conditions while line remains fixed at 18, 28 or 50 volts.

5. Guaranteed for a bandwidth of DC to 20 MHz. Tested using a 20 KHz to 2.0 MHz bandwidth.

6. A capacitive load of any value from 0 to the specified maximum is permitted without compromise to DC performance. A capacitive

load in excess of the maximum limit may interfere with the proper operation of the converter’s short circuit protection, causing

erratic behavior during turn on.

7. Parameter is tested as part of design characterization or after design or process changes. Thereafter, parameters shall be

guaranteed to the limits specified in the table.

8. Load transient rate of change, di/dt

 2.0 A/µs.

10. Line transient rate of change, dv/dt

 50 V/µs.

11. Turn on delay time is for either a step application of input power or a logical low to high transition on the enable pin (pin 3) while

power is present at the input.

Parameter

Symbol

Test Conditions

Limits

Min.

Max.

Turn on overshoot

5.0

Turn on delay

Note 11

2.0

20

ms

Capacitive load

Notes 6, 7

ARH2802R5S

ARH2803R3S

ARH2805S

ARH2805R2S

ARH2812S

ARH2815S

No effect on DC performance

1200

1200

1000

1000

180

120

µF

Isolation

Any pin to case

100

M



Recovery from a short circuit

Output shorted, then open into max

rated load current. Vin = 28V

10

% of rated

output

voltage

Overload trip current

Maximum current at specified

output voltage

105

135

% of max

output

current

Unit

Recovery time from step line

changes

Notes 7, 9, 10

ARH2802R5S

ARH2803R3S

ARH2805S

ARH2805R2S

ARH2812S

ARH2815S

600

600

700

700

320

400

s