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3

AHF28XX Series

Notes to Specifications

AHF2805S

1. Parameter guaranteed by line and load regulation tests.

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

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

A capacitive 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.

4. 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.

5. 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.

6. Load step transition time between 2 and 10 microseconds.

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

percent of V

8. Input step transition time between 2 and 10 microseconds.

9. 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.

Limits

Test

Symbol

Conditions

-55°C

≤ Tc ≤ +125°C

Vin = 28 Vdc ±5%, C

unless otherwise specified

Group A

Subgroups

Device

Types

Min

Max

Unit

Output response to

step transient load

changes

6

VO

TLOAD

1200 mA to/from 2400mA

4,5,6

01

-300

+300

mV pk

0 mA to/from 1200mA

4,5,6

-500

+500

mV pk

1200 mA to/from 2400mA

4,5,6

01

70

µs

0 mA to 1200 mA

4,5,6

1200

ms

Recovery time step

transient load

changes

6.7

TT

LOAD

500 mA to 0 mA

4,5,6

8

ms

Output response to

transient step line

changes

VO

TLINE

Input step 16 V to/from

40 V dc, I

4, 8

4,5,6

01

500

mV pk

Recovery time

transient step line

changes

TT

LINE

Input step 16 V to/from 40Vdc

I

4, 7, 8

4,5,6

01

800

µs

Turn on overshoot

VTon

OS

I

4,5,6

01

600

mV pk

Turn on delay

Ton

D

I

9

4,5,6

01

20

ms

Load fault

recovery

4,9

Tr

LF

4,5,6

01

20

ms

Weight

35

grams