User Manual

23
4856E–AUTO–07/07
ATA6823 [Preliminary]
7.27
Switching level of t
CC
comparator
V
swtcc
0.653 ×
V
VCC
0.667 ×
V
VCC
0.68 ×
V
VCC
V
7.28
Short circuit detection
voltage
(9)
V
SC
3.544.5V
7.29
Short circuit detection
time
(10)
t
SC
51015ms
8 Input EN2
8.1
Input low-voltage
threshold
V
IL
2.3 3.6 V
8.2
Input high-voltage
threshold
V
IH
2.8 4.0 V
8.3 Hysteresis
(6)
HYS 0.47 V
8.4 Pull-down resistor R
PD
50 100 200 kΩ
8.5 Rise/fall time t
rf
100 ns
8.6 Debounce time
(6)
t
db
2 × T
100
3 × T
100
µs
9 Diagnostic Outputs DG1, DG2, DG3
9.1 Low level output current V
DG
= 0.4V
(6)
IL 4 mA
9.2 High level output current V
DG
= VCC – 0.4V
(6)
IH 4 mA
9. Electrical Characteristics (Continued)
All parameters given are valid for 7V ≤ VBAT ≤ 18V and for –40°C ≤ϑambient ≤ 125°C unless stated otherwise.
No. Parameters Test Conditions Pin Symbol Min Typ Max Unit Type*
* Type: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Notes: 1. EN, DIR, PWM = high
2. The use of X7R material is recommended
3. For higher values, stability at zero load is not guaranteed
4. Tested during qualification only
5. Value depends on T
OSC
; function tested with digital test pattern
6. Tested during characterization only
7. Supplied by charge pump
8. See section “Cross Conduction Time”
9. Voltage between source-drain of external switching transistors in active case
10. The short-circuit message will never be generated for switch-on time < t
sc