Rainbow Electronics ATA6824 - Manual (Page 18)

18
4931C–AUTO–09/06
ATA6824 [Preliminary]
4.13
Node has to sustain the
current that can flow
under this condition. Bus
must remain operational
under this condition
V
BAT
disconnected
V
SUP_Device
= GND
0V < V
BUS
< 18V
8 I
BUS
100 µA
4.14
Center of receiver
threshold V
BUS_CNT
=
(V
th_dom
+ V
th_rec
)/2
8 V
BUS_CNT
0.475 VS 0.5 VS 0.525 VS V
4.15 Receiver dominant state V
EN
= 5V 8 V
BUSdom
0.4 VS V
4.16 Receiver recessive state V
EN
= 5V 8 V
BUSrec
0.6 VS V
4.17 Receiver input hysteresis V
HYS
= V
th_rec
– V
th_dom
8 V
BUShys
0.1 VS 0.175 VS V
5 Control Inputs DIR, PWM, WD, TX
5.1
Input low-voltage
threshold
V
IL
0.3
×
V
VCC
V A
5.2
Input high-voltage
threshold
V
IH
0.7
×
V
VCC
V A
5.3 Hysteresis (6) HYS 0.7 A
5.4 Pull-down resistor DIR, PWN, WD, TX R
PD
25 50 100 k
Ω
D
5.5 Rise/fall time t
rf
100 ns D
6 Charge Pump
6.1 Charge pump voltage Load = 0A 21 VCP
V
VBAT
+ V
VG
V A
6.2 Charge pump voltage
Load = 3 mA,
C
CP
= 100 nF
21 VCP
V
VBAT
+ V
VG
– 1
V A
6.3
Period charge pump
oscillator
T
100
9 11 µs A
6.4
CP load current in VG
without CP load
Load = 0A I
VGCPz
100 µA D
6.5
CP load current in VG
with CP load Load = 3 mA,
C
CP
= 100 nF
I
VGCP
3.3 mA A
7 H-bridge Driver
7.1
Low-side driver HIGH
output voltage
V
LxH
V
VG
V D
7.2
ON-resistance of sink
stage of pins L1, L2 R
DSON_LxL,
x = 1, 2
20
Ω
A
7.3
ON-resistance of source
stage of pins L1, L2 R
DSON_LxH,
x = 1, 2
20
Ω
A
10. Electrical Characteristics (Continued)
All parameters given are valid for 7V
≤
VBAT
≤
18V and for –40°C
≤ ϑ
ambient
≤
150°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