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3

ATW28XXS Series

Notes to Specifications

ATW2805S

1 Parameter guaranteed by line and load regulation tests.

2 Bandwidth guaranteed by design. Tested for 20kHz to 2.0MHz.

3 Above +125

°C case, derate output power linearly to 0 at +135°C.

4 Output voltage measured at load with remote sense leads connected across load.

5 Capacitive load may be any value from 0 to the maximum limit without compromising dc performance.

A capacitive load in excess of the maximum limit will not disturb loop stability but may interfere with the

operation of the load fault detection circuitry, appearing as a short circuit during turn-on.

6 Parameter shall be tested as part of design characterization and after design or process changes.

Thereafter, parameters shall be guaranteed to the limits specified in Table I.

7 An overload is that condition with a load in excess of the rated load but less than that necessary to

trigger the short circuit protection and is the condition of maximum power dissipation.

8 Load step transition time between 2.0

µs and 10µs.

9 Recovery time is measured from the initiation of the transient to where V

10 Turn-on delay time measurement is for either a step application of power at the input or the removal of

ground signal from the inhibit pin (pin 1) while power is applied to the input is unlimited.

Test

Symbol

Conditions

-55°C

≤ Tc ≤+125°C

Vin = 28 Vdc ±5%, C

unless otherwise specified

Group A

Subgroups

Device

Types

Limits

Unit

Min

Max

Recovery time step

transient load changes

8, 9

TT

LOAD

4000mA to/from 6000mA

4

All

100

µs

5,6

200

500mA to 2500mA

4

All

100

5,6

200

Turn on overshoot

VTon

OS

I

4,5,6

All

500

Turn on delay

10

Ton

D

I

4,5,6

All

12

ms

Load fault recovery

6, 10

Tr

LF

4,5,6

All

12

ms