3
ATW2812D
TABLE I. Electrical Performance Characteristics - Continued
Test
Symbol
Conditions
-55
°C ≤ T
C
≤ +125°C
VIN = 28 V dc ±5%, CL = 0 unless
otherwise specified
Group A
Subgroups
Device
types
Limits
Unit
Min
Max
Switching frequency 4/
FS
IOUT = 2500 mA
4,5,6
01
250
300
KHz
02
250
270
03
275
300
Output response to step
transient load changes
4/ 9/
VOTLOA
D
1250 mA to/from 2500 mA
4,5,6
All
-400
+400
mV pk
0 mA to/from 2500 mA
4,5,6
All
-800
+800
Recovery time, step
transient load changes
4/ 9/ 10/
TTLOAD
1250 mA to/from 2500 mA
4,5,6
All
70
s
0 mA to/from 1250 mA
4,5,6
All
500
1250 mA to/from 0 mA
4,5,6
All
5
ms
Output response transient
step line changes 4/ 7/ 11/
VOTLINE
Input step from/to 18 to 40 V dc,
IOUT = 2500 mA
4,5,6
All
-800
+800
mV pk
Recovery time transient
step line changes 4/ 7/ 10/
11/
TTLINE
Input step from/to 18 to
40 V dc,
IOUT = 2500 mA
4,5,6
All
4000
s
Turn on overshoot 4/
VTonOS
IOUT = 0 and 2500 mA
4,5,6
All
750
mV pk
Turn on delay
4/ 12/
TonD
IOUT = 0 and 2500 mA
4,5,6
All
14
ms
Load fault recovery
7/
TrLF
4,5,6
All
14
ms
Weight
Flange
75
grams
Notes:
1/
Parameter guaranteed by line load, and cross regulation tests.
2/
Up to 90 percent of full power is available from either output provided the total output does not exceed 30 W.
3/
Bandwidth guaranteed by design. Tested for 20 KHz to 2 MHz.
4/
Load current split equally between +VOUT and -VOUT.
5/
Three-watt load on output under test, 3 watt to 27 watt load change on other output.
6/
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.
7/
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.
8/
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.
9/
Load step transition time between 2 and 10 microseconds.
10/
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.
11/
Input step transition time between 2 and 10 microseconds.
12/
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 8) while
power is applied to the input.