AHF28XX Series
AHF2815S
Table III. Electrical Performance Characteristics - continued
Test
Symbol
Conditions
-55°C Tc +125°C
Vin = 28 Vdc ±5%, CL = 0
unless otherwise specified
Group A
Subgroups
Device
Types
Limits
Max
Unit
≤
≤
Min
Output response to
step transient load
Changes6
VOTLOAD
TTLOAD
1000 mA to/from 2000mA
0 mA to/from 1000mA
4,5,6
4,5,6
4
All
All
All
04
-800
+800
+750
100
200
5
mV pk
-1000
Recovery time step
transient load
Changes6,7
1000 mA to/from 2000mA
0 mA to/from 1000 mA
µs
5,6
4
ms
5,6
10
Output response to
transient step line
changes
VOTLINE
Input step 18 V to/from
4,5,6
4,5,6
-1000
+1000
500
mV pk
05
06
04
4, 8
40 V dc, IOUT = 2000mA
Recovery time
transient step line
changes
TTLINE
Input step 18 V to/from 40Vdc
µs
05
06
All
All
4, 7, 8
IOUT = 2000mA
Turn on overshoot
Turn on delay
VTonOS
TonD
IOUT = 0 and 2000mA
IOUT = 0 and 2000mA 9
4,5,6
4,5,6
750
12
mV pk
ms
Load fault
recovery4,9
TrLF
4,5,6
All
12
38
ms
Weight
grams
Notes to Specifications
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 III.
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 VOUT has returned to within ±1
percent of VOUT at 50 percent load.
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
a ground signal from the inhibit pin (pin 2) while power is applied to the input is unlimited.
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